Wireless transceiver system optimization method in dynamic scene and computer device

Abstract

The embodiment of the invention discloses a wireless transceiving system optimization method in a dynamic scene and a computer device. The method comprises the following steps: constructing a three-dimensional spherical coordinate system of a transmitting-receiving antenna, and obtaining an initial polarization vector of the transmitting-receiving antenna in the three-dimensional spherical coordinate system; converting the initial polarization vector into representation under a three-dimensional rectangular coordinate system based on polarization characteristics of the transmitting and receiving antenna to obtain an actual polarization vector of the transmitting and receiving antenna; when the attitude of the transmitting-receiving antenna carrier changes, updating the actual polarization vector based on the current attitude data of the transmitting-receiving antenna carrier; based on the current actual polarization vector of the transmitting-receiving antenna, obtaining a polarization loss factor between the transmitting-receiving antenna through a vector point multiplication algorithm; and analyzing and optimizing the link characteristics of the wireless transceiver system based on the polarization loss factor. According to the method, the polarization mismatch loss between the transmitting and receiving antennas can be accurately quantified in a dynamic scene, and the link quality of a wireless transmitting and receiving system is improved.

Description

Technical Field

[0001] The present disclosure relates to the field of radio technology, and in particular to a method for analyzing and optimizing a wireless transceiver system in a dynamic scenario and a computer device. Background Art

[0002] Wireless RF transceiver technology is a core component of modern radio systems and is widely used in wireless communication systems, radar systems, radio navigation systems, mobile communication systems, etc. In these fields, the performance of the wireless transceiver system link depends not only on the transmission power, the gain of the transceiver antenna and the transmission loss of spatial propagation, but also on the polarization mismatch loss of the transceiver antenna.

[0003] Most of the existing polarization analysis methods are based on static scenes, which makes it difficult to accurately reflect the polarization characteristics of the transceiver antennas in dynamic scenes. On mobile platforms such as aircraft and ships, the attitude of the transceiver antenna changes frequently, which makes the evaluation of polarization mismatch loss particularly complicated. For example, multiple antennas with different functions are installed on the back and abdomen of civil aircraft, most of which are vertically polarized knife-shaped antennas. When the aircraft is taking off, climbing and turning, the change in the body attitude has a very obvious effect on the polarization characteristics of the antenna, causing the polarization loss of the transceiver link to increase, which in turn affects the link performance of the wireless transceiver system. Due to the shortcomings of the existing polarization analysis methods in dynamic scenes, the polarization mismatch loss evaluation is inaccurate, which affects the reliability and stability analysis of the wireless transceiver system. Summary of the invention

[0004] In view of this, the embodiments of the present disclosure provide a method for optimizing a wireless transceiver system in a dynamic scenario and a computer device, which can accurately quantify the polarization mismatch loss between transceiver antennas in a dynamic scenario, and provide an analysis method for optimizing the link quality of the wireless transceiver system.

[0005] In a first aspect, the embodiments of the present disclosure provide a method for optimizing a wireless transceiver system in a dynamic scenario, which adopts the following technical solutions:

[0006] Constructing a three-dimensional spherical coordinate system of the transmitting and receiving antennas, and obtaining an initial polarization vector of the transmitting and receiving antennas in the three-dimensional spherical coordinate system;

[0007] Based on the polarization characteristics of the transceiver antenna, the initial polarization vector is converted into a representation in a three-dimensional rectangular coordinate system to obtain an actual polarization vector of the transceiver antenna;

[0008] When the posture of the transceiver antenna carrier changes, updating the actual polarization vector based on the current posture data of the transceiver antenna carrier;

[0009] Based on the actual polarization vectors of the transmitting and receiving antennas, the polarization loss factor between the transmitting and receiving antennas is obtained by using a vector dot multiplication algorithm;

[0010] The link of the wireless transceiver system is optimized based on the polarization loss factor analysis.

[0011] Optionally, the transceiver antenna includes a transmitting antenna and a receiving antenna; and obtaining an initial polarization vector of the transceiver antenna in the three-dimensional spherical coordinate system includes:

[0012] Obtaining a radiation direction vector of a transmitting antenna in a three-dimensional spherical coordinate system and a receiving direction vector of a receiving antenna in a three-dimensional spherical coordinate system;

[0013] Determining a polarization trajectory plane of a transmitting and receiving antenna based on the radiation direction vector and the receiving direction vector;

[0014] Based on the polarization trajectory plane, an initial polarization vector of the transmitting and receiving antenna is obtained.

[0015] Optionally, the radiation direction vector of the transmitting antenna is:

[0016]

[0017] In the formula, is the radiation direction vector of the transmitting antenna; r1 is the radial distance of the transmitting antenna in the three-dimensional spherical coordinate system; θ1 is the polar angle of the radiation direction vector of the transmitting antenna in the three-dimensional spherical coordinate system; A is the azimuth of the radiation direction vector of the transmitting antenna in the three-dimensional spherical coordinate system; r1 is the radial component of the radiation direction vector of the transmitting antenna in the three-dimensional spherical coordinate system; is the radial unit vector in the three-dimensional spherical coordinate system of the transmitting antenna; A θ1 is the latitudinal component of the radiation direction vector of the transmitting antenna in the three-dimensional spherical coordinate system; is the latitudinal unit vector in the three-dimensional spherical coordinate system of the transmitting antenna; is the meridional component of the radiation direction vector of the transmitting antenna in the three-dimensional spherical coordinate system; is the meridional unit vector in the three-dimensional spherical coordinate system of the transmitting antenna.

[0018] Optionally, the receiving direction vector is:

[0019]

[0020] In the formula, is the receiving direction vector of the receiving antenna; r2 is the radial distance of the receiving antenna in the three-dimensional spherical coordinate system; θ2 is the polar angle of the receiving direction vector of the receiving antenna in the three-dimensional spherical coordinate system; A is the azimuth of the receiving direction vector of the receiving antenna in the three-dimensional spherical coordinate system; r2 is the radial component of the receiving direction vector of the receiving antenna in the three-dimensional spherical coordinate system; is the radial unit vector in the three-dimensional spherical coordinate system of the receiving antenna; A θ2 is the latitudinal component of the receiving direction vector of the receiving antenna in the three-dimensional spherical coordinate system; is the latitudinal unit vector in the three-dimensional spherical coordinate system of the receiving antenna; is the meridional component of the receiving direction vector of the receiving antenna in the three-dimensional spherical coordinate system; is the meridional unit vector in the three-dimensional spherical coordinate system of the receiving antenna.

[0021] Optionally, the initial polarization vector of the transmitting antenna is:

[0022]

[0023] In the formula, is the initial polarization vector of the transmitting antenna;

[0024] The initial polarization vector of the receiving antenna is:

[0025]

[0026] In the formula, is the initial polarization vector of the transmitting antenna.

[0027] Optionally, converting the initial polarization vector into a representation in a three-dimensional rectangular coordinate system based on the polarization characteristics of the transceiver antenna to obtain an actual polarization vector of the transceiver antenna includes:

[0028] Based on the polarization characteristic, modifying the initial polarization vector;

[0029] Based on the conversion relationship between the three-dimensional spherical coordinate system and the three-dimensional rectangular coordinate system of the transmitting and receiving antennas, the corrected initial polarization vector is converted into an actual polarization vector.

[0030] Optionally, the updating the actual polarization vector based on current posture data of the transmitting and receiving antenna carrier includes:

[0031] Based on the current posture data of the transmitting and receiving antenna carrier, a rotation matrix of the transmitting and receiving antenna carrier is obtained;

[0032] The actual polarization vectors of the transmitting and receiving antennas are updated based on the rotation matrix of the transmitting and receiving antenna carriers.

[0033] Optionally, the polarization loss factor is:

[0034]

[0035] Where ρ is the polarization loss factor between the transmitting and receiving antennas; is the actual polarization vector of the transmitting antenna; is the actual polarization vector of the receiving antenna.

[0036] Optionally, the method for optimizing a wireless transceiver system in a dynamic scenario further includes:

[0037] When the posture of the transmitting and receiving antenna carrier does not change, the actual polarization vector is updated regularly.

[0038] In a second aspect, the embodiments of the present disclosure further provide a wireless transceiver system optimization system in a dynamic scenario, which adopts the following technical solutions:

[0039] An initial polarization vector acquisition module is used to construct a three-dimensional spherical coordinate system of the transceiver antenna and obtain the initial polarization vector of the transceiver antenna in the three-dimensional spherical coordinate system;

[0040] An initial polarization vector conversion module, used to convert the initial polarization vector into a representation in a three-dimensional rectangular coordinate system based on the polarization characteristics of the transceiver antenna, so as to obtain an actual polarization vector of the transceiver antenna;

[0041] An actual polarization vector updating module, used for updating the actual polarization vector based on current posture data of the transceiver antenna carrier when the posture of the transceiver antenna carrier changes;

[0042] A polarization loss factor acquisition module is used to obtain the polarization loss factor between the transmitting and receiving antennas through a vector dot multiplication algorithm based on the current actual polarization vectors of the transmitting and receiving antennas;

[0043] A wireless transceiver system optimization module is used to optimize the link characteristics of the wireless transceiver system based on the polarization loss factor analysis.

[0044] In a third aspect, the embodiments of the present disclosure further provide a computer device, which adopts the following technical solution:

[0045] The computer device comprises:

[0046] at least one processor; and,

[0047] a memory communicatively connected to the at least one processor; wherein,

[0048] The memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute any of the above-mentioned methods for optimizing the wireless transceiver system in a dynamic scenario.

[0049] In a fourth aspect, an embodiment of the present disclosure further provides a computer-readable storage medium, which stores computer instructions, and the computer instructions are used to enable a computer to execute any of the above-mentioned methods for optimizing a wireless transceiver system in a dynamic scenario.

[0050] In a fifth aspect, an embodiment of the present disclosure further provides a computer program product, including a computer program / instruction, which implements the steps of any of the above methods when executed by a processor.

[0051] The wireless transceiver system optimization method in a dynamic scene provided by the embodiment of the present disclosure can more accurately describe the polarization state of the antenna by constructing a three-dimensional spherical coordinate system. Especially in a dynamic scene, the polarization state of the antenna may change with the change of the carrier posture. The three-dimensional spherical coordinate system provides a unified reference framework, which is convenient for the subsequent definition and characterization of the polarization vector. It is more convenient to perform calculations in a rectangular coordinate system, and it is easier to combine with the posture data in practical applications, and dynamically update the polarization vector from the spherical coordinate system to the rectangular coordinate system, which is convenient for subsequent calculations and processing. The polarization state of the antenna will directly affect the quality of the received signal, and the dynamically changing environment and posture may cause polarization mismatch, which in turn affects the link quality of the wireless transceiver system. Therefore, the dynamic update of the actual polarization vector can reflect the impact of the change of the carrier posture on the polarization characteristics of the antenna in real time, and ensure the accuracy of the polarization state, which is particularly important for the wireless transceiver system in a dynamic scene. By calculating the polarization loss factor, the polarization matching degree between the transceiver antennas can be quantified, and the polarization mismatch loss between the transceiver antennas can be quantified as a specific value. It is an important parameter for evaluating the performance of the wireless link and directly affects the transmission efficiency and communication quality of the signal. Using polarization loss factors to analyze link characteristics and perform link optimization can effectively reduce signal loss caused by polarization mismatch and improve the overall performance of the wireless transceiver system. In summary, this method can dynamically analyze the impact of the polarization characteristics of the transceiver antenna on the system link performance in real time, and provide accurate antenna polarization characteristics for dynamic link analysis of the wireless transceiver system. By accurately analyzing the polarization mismatch loss between the transceiver antennas, the accuracy of the link quality calculation of the wireless transceiver system is improved, providing a comprehensive analysis method for possible link quality degradation.

[0052] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the following preferred embodiments are specifically cited and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0054] Figure 1A schematic diagram of a flow chart of a method for optimizing a wireless transceiver system in a dynamic scenario provided by an embodiment of the present disclosure;

[0055] Figure 2 A schematic diagram of a process for obtaining an initial polarization vector provided in an embodiment of the present disclosure;

[0056] Figure 3 A schematic diagram of electromagnetic wave propagation and polarization direction provided in an embodiment of the present disclosure;

[0057] Figure 4 A schematic diagram of linear polarization provided for an embodiment of the present disclosure;

[0058] Figure 5 A schematic diagram of circular polarization provided for an embodiment of the present disclosure;

[0059] Figure 6 A schematic diagram of elliptical polarization provided for an embodiment of the present disclosure;

[0060] Figure 7 A schematic diagram of vertical polarization provided for an embodiment of the present disclosure;

[0061] Figure 8 A schematic diagram of horizontal polarization provided for an embodiment of the present disclosure;

[0062] Fig. 9 A schematic diagram of a three-dimensional spherical coordinate representation of the radiation / receiving direction provided by an embodiment of the present disclosure;

[0063] Fig.10 A schematic diagram of a flow chart of a method for obtaining an actual polarization vector provided in an embodiment of the present disclosure;

[0064] Fig.11 A schematic diagram of a flow chart of an actual polarization vector updating method provided in an embodiment of the present disclosure;

[0065] Fig.12 A schematic diagram of aircraft attitude characteristics provided by an embodiment of the present disclosure;

[0066] Fig.13 A schematic diagram of a transceiver antenna carrier provided in an embodiment of the present disclosure;

[0067] Fig.14 Another schematic diagram of a transceiver antenna carrier provided in an embodiment of the present disclosure;

[0068] Fig.15 A principle block diagram of a wireless transceiver system optimization system in a dynamic scenario provided by an embodiment of the present disclosure;

[0069] Fig.16 A schematic diagram of the structure of a computer device provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0070] The embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

[0071] It should be clear that the following embodiments of the present disclosure are described by specific specific examples, and those skilled in the art can easily understand other advantages and effects of the present disclosure from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all of the embodiments. The present disclosure can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present disclosure. It should be noted that the following embodiments and features in the embodiments can be combined with each other in the absence of conflict. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present disclosure.

[0072] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein may be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on the present disclosure, it should be understood by those skilled in the art that an aspect described herein may be implemented independently of any other aspect, and two or more of these aspects may be combined in various ways. For example, any number of aspects described herein may be used to implement the device and / or practice the method. In addition, other structures and / or functionalities other than one or more of the aspects described herein may be used to implement this device and / or practice this method.

[0073] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present disclosure. The drawings only show components related to the present disclosure rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0074] Additionally, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the aspects described may be practiced without these specific details.

[0075] Reference Figure 1 The present disclosure provides a method for optimizing a wireless transceiver system in a dynamic scenario, comprising the following steps:

[0076] S1: construct a three-dimensional spherical coordinate system of the transmitting and receiving antennas, and obtain the initial polarization vectors of the transmitting and receiving antennas in the three-dimensional spherical coordinate system;

[0077] S2: Based on the polarization characteristics of the transmitting and receiving antennas, the initial polarization vector is converted into a representation in a three-dimensional rectangular coordinate system to obtain the actual polarization vector of the transmitting and receiving antennas;

[0078] S3: Determine whether the posture of the transmitting and receiving antenna carrier has changed; if so, execute S4; if not, execute S5;

[0079] S4: updating the actual polarization vector based on the current attitude data of the transmitting and receiving antenna carrier;

[0080] S5: Regularly update the actual polarization vector;

[0081] S6: Based on the actual polarization vectors of the transmitting and receiving antennas, the polarization loss factor between the transmitting and receiving antennas is obtained by using a vector dot multiplication algorithm;

[0082] S7: Optimizing the link characteristics of wireless transceiver systems based on polarization loss factor analysis.

[0083] The wireless transceiver system optimization method in dynamic scenes disclosed in the present invention can more accurately describe the polarization state of the antenna by constructing a three-dimensional spherical coordinate system. Especially in dynamic scenes, the polarization state of the antenna may change with the change of the carrier posture. The three-dimensional spherical coordinate system provides a unified reference framework, which is convenient for the subsequent definition and characterization of the polarization vector. It is more convenient to calculate in a rectangular coordinate system, and it is easier to combine with the posture data in practical applications, and dynamically update the polarization vector from the spherical coordinate system to the rectangular coordinate system, which is convenient for subsequent calculation and processing. The polarization state of the antenna will directly affect the quality of the received signal, and the dynamically changing environment and posture may cause polarization mismatch, which in turn affects the link quality of the wireless transceiver system. Therefore, the dynamic update of the actual polarization vector can reflect the impact of the change of the carrier posture on the polarization characteristics of the antenna in real time, and ensure the accuracy of the polarization state, which is particularly important for the wireless transceiver system in dynamic scenes. By calculating the polarization loss factor, the polarization matching degree between the transceiver antennas can be quantified, and the polarization mismatch loss between the transceiver antennas can be quantified as a specific value. It is an important parameter for evaluating the performance of the wireless link and directly affects the transmission efficiency and communication quality of the signal. Using the polarization loss factor to analyze link characteristics and perform link optimization can effectively reduce the signal loss caused by polarization mismatch and improve the overall performance of the wireless transceiver system.

[0084] In summary, this method can dynamically analyze the impact of the polarization characteristics of the transmitting and receiving antennas on the system link performance in real time, and provide accurate antenna polarization characteristics for dynamic link analysis of wireless transceiver systems. By accurately analyzing the polarization mismatch loss between the transmitting and receiving antennas, the accuracy of the link quality calculation of the wireless transceiver system is improved, providing a comprehensive analysis method for possible link quality degradation.

[0085] In S1, the three-dimensional rectangular coordinate system is one of the most common coordinate systems, which consists of three mutually perpendicular axes, while the three-dimensional spherical coordinate system is a three-dimensional coordinate system based on the spherical coordinate system, which uses radial distance, polar angle and azimuth to describe points in space. Whether it is a three-dimensional rectangular coordinate system or a three-dimensional spherical coordinate system, any fixed point of the transceiver antenna or any fixed point of the transceiver antenna carrier (referring to the installation platform of the transceiver antenna) is selected as the coordinate origin, such as the center point of the transceiver antenna, the center point of the transceiver antenna carrier or the center of gravity, and the direction of the coordinate axis can be defined according to actual needs. In this embodiment, the transceiver antenna includes a transmitting antenna and a receiving antenna. Therefore, when performing related operations, the same set of three-dimensional spherical coordinate systems and three-dimensional rectangular coordinate systems can be used to process the data of the transmitting antenna and the receiving antenna, or independent three-dimensional spherical coordinate systems and three-dimensional rectangular coordinate systems can be constructed for the transmitting antenna and the receiving antenna for operation. Similarly, the transmitting antenna carrier and the receiving antenna carrier can also share the same set of three-dimensional rectangular coordinate systems with the transmitting antenna and the receiving antenna, or each independently constructs a new set of three-dimensional rectangular coordinate systems for operation. This solution does not impose any specific restrictions on the specific method to be adopted, and you can choose according to actual needs.

[0086] Reference Figure 2 The flowchart of the method for obtaining the initial polarization vector is shown, and the initial polarization vector of the transmitting and receiving antennas is obtained in the three-dimensional spherical coordinate system, including the following steps:

[0087] S11: Obtain a radiation direction vector of a transmitting antenna in a three-dimensional spherical coordinate system and a receiving direction vector of a receiving antenna in a three-dimensional spherical coordinate system;

[0088] S12: determining a polarization trajectory plane of a transmitting and receiving antenna based on a radiation direction vector and a receiving direction vector;

[0089] S13: Based on the polarization trajectory plane, obtain the initial polarization vector of the transmitting and receiving antennas.

[0090] In S11, in actual engineering, the receiving and radiation directions of the transmitting and receiving antennas are usually described by spatial pointing angles, so the receiving and radiation direction vectors can be expressed in the three-dimensional spherical coordinate systems of the transmitting and receiving antennas respectively. The expression of the radiation direction vector of the transmitting antenna is as follows:

[0091]

[0092] In formula 1, is the radiation direction vector of the transmitting antenna; r1 is the radial distance of the transmitting antenna in the three-dimensional spherical coordinate system; θ1 and Used to indicate the radiation direction of the antenna. The two are the radiation direction angles of the transmitting antenna in the three-dimensional spherical coordinate system. θ1 is the polar angle of the radiation direction vector of the transmitting antenna in the three-dimensional spherical coordinate system, indicating the angle between the radiation direction vector and the vertical axis, or the pointing angle in the vertical direction; A is the azimuth of the radiation direction vector of the transmitting antenna in the three-dimensional spherical coordinate system, which represents the angle between the radiation direction vector and the horizontal axis, or the pointing angle in the horizontal direction; r1 is the radial component of the radiation direction vector of the transmitting antenna in the three-dimensional spherical coordinate system; is the radial unit vector in the three-dimensional spherical coordinate system of the transmitting antenna; A θ1 is the latitudinal component of the radiation direction vector of the transmitting antenna in the three-dimensional spherical coordinate system; is the latitudinal unit vector in the three-dimensional spherical coordinate system of the transmitting antenna; is the meridional component of the radiation direction vector of the transmitting antenna in the three-dimensional spherical coordinate system; is the meridional unit vector in the three-dimensional spherical coordinate system of the transmitting antenna.

[0093] The expression of the receiving direction vector of the receiving antenna is as follows:

[0094]

[0095] In formula 2, is the receiving direction vector of the receiving antenna; r2 is the radial distance of the receiving antenna in the three-dimensional spherical coordinate system; θ2 and Used to represent the receiving direction of the antenna. The two are the receiving direction angles of the receiving antenna in the three-dimensional spherical coordinate system, where θ2 is the polar angle of the receiving direction vector of the receiving antenna in the three-dimensional spherical coordinate system; A is the azimuth of the receiving direction vector of the receiving antenna in the three-dimensional spherical coordinate system; r2 is the radial component of the receiving direction vector of the receiving antenna in the three-dimensional spherical coordinate system; is the radial unit vector in the three-dimensional spherical coordinate system of the receiving antenna; A θ2 is the latitudinal component of the receiving direction vector of the receiving antenna in the three-dimensional spherical coordinate system; is the latitudinal unit vector in the three-dimensional spherical coordinate system of the receiving antenna; is the meridional component of the receiving direction vector of the receiving antenna in the three-dimensional spherical coordinate system; is the meridional unit vector in the three-dimensional spherical coordinate system of the receiving antenna.

[0096] In S12, according to the definition of the polarization of electromagnetic waves, the polarization direction refers to the orientation of the electric field vector of the electromagnetic wave in space, that is, the vibration direction of the electric field. For the electromagnetic waves radiated and received by the antenna, they can be approximated as plane electromagnetic waves in the far field region, and the vibration vector of its electric field (that is, the vector in the polarization direction, also called the polarization vector) and its direction vector (that is, the propagation vector of the plane electromagnetic wave, indicating the vector in the propagation direction, for the transmitting antenna, its direction vector is called the radiation direction vector, and for the receiving antenna, its direction vector is called the receiving direction vector) are perpendicular to each other. Based on this characteristic, the plane perpendicular to it can be determined by the receiving and radiating direction vectors, and this plane is called the polarization trajectory plane.

[0097] Reference Figure 3 Schematic diagram showing electromagnetic wave propagation and polarization direction. represents any one of the radiation and reception direction vectors of the transmitting antenna and the receiving antenna, represents any one of the polarization vectors of the transmitting antenna and the receiving antenna, Represents either the magnetic field direction vector of the transmitting antenna or the receiving antenna. Figure 4 The linear polarization diagram shown here refers to the electric field vector vibrating along a fixed direction in the polarization trajectory plane, and its vibration trajectory is a straight line. Figure 5 Schematic diagram of circular polarization. Circular polarization means that the electric field vector changes with time and describes a circular trajectory in the polarization trajectory plane. Figure 6 A schematic diagram of elliptical polarization is shown. Elliptical polarization refers to the change of the electric field vector over time, describing an elliptical trajectory in the polarization trajectory plane.

[0098] In linear polarization, when the horizontal plane is used as a reference, if the direction of the electric field is perpendicular to the horizontal plane, it is called vertical polarization. Figure 7 Schematic diagram of vertical polarization, in which plane electromagnetic waves can propagate in any direction parallel to the horizontal plane.

[0099] In linear polarization, when the horizontal plane is used as a reference, if the direction of the electric field is parallel to the horizontal plane, it is called horizontal polarization. Figure 8 Schematic diagram of horizontal polarization. In this case, the plane electromagnetic wave can propagate in any direction perpendicular to the horizontal plane.

[0100] Based on the above, it can be seen that the characteristics of the transmit and receive polarization vectors are directly correlated with their direction vectors. Based on this correlation, as long as the direction vectors of the transmit and receive antennas are obtained based on the three-dimensional spherical coordinate system, the polarization trajectory plane can be determined, thereby facilitating the subsequent accurate definition and description of the polarization vector in the polarization trajectory plane.

[0101] In S13, the vibration trajectory of the electric field vector is recorded in the polarization trajectory plane, and then the polarization characteristics of the electromagnetic wave are described according to the motion trajectory of the electric field vector. The vibration direction and magnitude of the electric field vector directly reflect the polarization state of the electromagnetic wave. In the three-dimensional spherical coordinate system, this polarization state can be described by a mathematical vector, namely the initial polarization vector. The initial polarization vector not only indicates the direction of the electric field vector, but also describes its vibration characteristics in the polarization trajectory plane, thereby fully reflecting the polarization characteristics of the electromagnetic wave.

[0102] Reference Fig. 9 A schematic diagram of the three-dimensional spherical coordinate representation of the radiation / receiving direction is shown, where P represents either the receiving direction or the radiation direction, r represents either the radial distance of the three-dimensional spherical coordinate system of the transmitting and receiving antennas, and θ represents either the polar angle of the direction vector of the transmitting and receiving antennas in the three-dimensional spherical coordinate system. represents any one of the azimuth angles of the direction vector of the transmitting and receiving antennas in the three-dimensional spherical coordinate system, represents the radial unit vector in the three-dimensional spherical coordinate system of the transmitting and receiving antennas, represents the latitudinal unit vector in the three-dimensional spherical coordinate system of the transmitting and receiving antennas, represents the meridian unit vector in the three-dimensional spherical coordinate system of the transmitting and receiving antennas. Perpendicular to and plane, so according to the definition of polarization, and The plane formed is the polarization trajectory plane, and can be used in this plane and The components are used to describe the polarization characteristics of the antenna, forming the definition of the initial polarization vector of the antenna. The expression of the initial polarization vector of the transmitting antenna is as follows:

[0103]

[0104] In formula 3, is the initial polarization vector of the transmitting antenna; That is A θ1 and Respectively Direction and The polarization components in the direction and satisfy the polarization orthogonal normalization conditions.

[0105] The expression of the initial polarization vector of the receiving antenna is as follows:

[0106]

[0107] In formula 4, is the initial polarization vector of the transmitting antenna; Similarly, A θ2 and The polarization orthogonality normalization condition is satisfied.

[0108] In S2, refer to Fig.10 The flowchart of the actual polarization vector acquisition method is shown, "Based on the polarization characteristics of the transceiver antenna, the initial polarization vector is converted into a representation in a three-dimensional rectangular coordinate system to obtain the actual polarization vector of the transceiver antenna" includes the following steps:

[0109] S21: based on the polarization characteristics, correct the initial polarization vector;

[0110] S22: based on a conversion relationship between the three-dimensional spherical coordinate system of the transmitting and receiving antennas and the three-dimensional rectangular coordinate system, convert the corrected initial polarization vector into an actual polarization vector.

[0111] In S21, the polarization characteristics of the transceiver antenna include at least one of the common vertical polarization, horizontal polarization, slant 45° polarization, slant -45° polarization, left-hand circular polarization, right-hand circular polarization and elliptical polarization. The polarization characteristics of the actual antenna may deviate from the design value, resulting in an error between the initial polarization vector and the actual polarization vector. Therefore, according to the polarization characteristics of the transceiver antenna, the corresponding initial polarization vector is corrected to ensure that the radiation or reception of the transceiver antenna conforms to its designed polarization form, thereby achieving the best signal transmission and reception effect. This method can not only deal with errors in the actual installation of the antenna, but also adapt to different working scenarios and requirements.

[0112] If the polarization characteristic of the transmitting and receiving antennas is vertical polarization, the electric field is only This amount, The component is zero, the radiation direction of the transmitting antenna and the receiving direction of the receiving antenna are parallel to the horizontal plane, and the radiation direction and the receiving direction are given by Determine, therefore θ = 90°, the initial polarization vector is perpendicular to the horizontal plane, based on this principle, the initial polarization vector is corrected. Among them, the expression of the corrected initial polarization vector of the transmitting antenna is as follows:

[0113]

[0114] In formula 5, is the initial polarization vector after the transmitting antenna is corrected. Without loss of generality, we can take to describe.

[0115] The expression of the corrected initial polarization vector of the receiving antenna is as follows:

[0116]

[0117] In Formula 6, is the initial polarization vector after receiving antenna correction. Without loss of generality, we can take to describe.

[0118] If the polarization characteristic of the transmitting and receiving antennas is horizontal polarization, the electric field is only This amount, The component is zero, and the radiation direction of the transmitting antenna and the receiving direction of the receiving antenna are determined by θ and Determine that the initial polarization vector is located at plane, and based on this principle, the initial polarization vector is corrected. The expression of the corrected initial polarization vector of the transmitting antenna is as follows:

[0119]

[0120] In formula 7, without loss of generality, we can take to describe.

[0121] The expression of the corrected initial polarization vector of the receiving antenna is as follows:

[0122]

[0123] In formula 8, without loss of generality, we can take to describe.

[0124] If the polarization characteristics of the transmitting and receiving antennas are slanted 45° polarization, the initial polarization vector is at an angle of 45° to the horizontal plane. The radiation direction of the transmitting antenna and the receiving direction of the receiving antenna are determined by θ and Determine that the initial polarization vector is uniformly projected onto and direction, and the amplitude of each component is Based on this principle, the initial polarization vector is corrected. The expression of the corrected initial polarization vector of the transmitting antenna is as follows:

[0125]

[0126] In formula 9, without loss of generality, we can take to describe.

[0127] The expression of the corrected initial polarization vector of the receiving antenna is as follows:

[0128]

[0129] In formula 10, without loss of generality, we can take to describe.

[0130] If the polarization characteristics of the transmitting and receiving antennas are slanted -45° polarization, the angle between the initial polarization vector and the horizontal plane is -45°, and the radiation direction of the transmitting antenna and the receiving direction of the receiving antenna are determined by θ and Determine that the initial polarization vector is uniformly projected onto and direction, and the amplitude of each component is Based on this principle, the initial polarization vector is corrected. The expression of the corrected initial polarization vector of the transmitting antenna is as follows:

[0131]

[0132] In formula 11, without loss of generality, we can take to describe.

[0133] The expression of the corrected initial polarization vector of the receiving antenna is as follows:

[0134]

[0135] In formula 12, without loss of generality, we can take to describe.

[0136] If the polarization characteristic of the transmitting and receiving antennas is left-hand circular polarization, the initial polarization vector forms a circular trajectory in a clockwise direction on the polarization trajectory plane. and The magnitude of the component is There is a phase relationship of 90° or 270°, and the initial polarization vector is corrected based on this principle.

[0137] Among them, the expression of the corrected initial polarization vector of the transmitting antenna is as follows:

[0138]

[0139] In formula 13, j is an imaginary unit, and -j means that the longitudinal unit vector lags 90° behind the latitudinal unit vector. Without loss of generality, we can take to describe.

[0140] The expression of the corrected initial polarization vector of the receiving antenna is as follows:

[0141]

[0142] In formula 14, without loss of generality, we can take to describe.

[0143] If the polarization characteristic of the transmitting and receiving antennas is right-hand circular polarization, the initial polarization vector forms a circular trajectory in a counterclockwise direction on the polarization trajectory plane. and The magnitude of the component is There is a phase relationship of 90° or 270°, and the initial polarization vector is corrected based on this principle.

[0144] Among them, the expression of the corrected initial polarization vector of the transmitting antenna is as follows:

[0145]

[0146] In formula 15, j indicates that the longitudinal unit vector is 90° ahead of the latitudinal unit vector. Without loss of generality, we can take to describe.

[0147] The expression of the corrected initial polarization vector of the receiving antenna is as follows:

[0148]

[0149] In formula 16, without loss of generality, we can take to describe.

[0150] Elliptical polarization includes left-handed elliptical polarization and right-handed elliptical polarization. If the polarization characteristic of the transmitting and receiving antennas is left-handed elliptical polarization, the initial polarization vector forms an elliptical trajectory clockwise in the polarization trajectory plane. Based on this principle, the initial polarization vector is corrected. The expression of the corrected initial polarization vector of the transmitting antenna is as follows:

[0151]

[0152] In Formula 17, a1 is The component in the direction indicates that the initial polarization vector of the transmitting antenna forms the long semi-axis of the elliptical trajectory in the polarization trajectory plane; b1 is The component in the direction indicates that the initial polarization vector of the transmitting antenna forms the short semi-axis of the elliptical trajectory in the polarization trajectory plane; a1 and b1 satisfy the polarization orthogonal normalization condition, a1 2 +b1 2 =1.0, and AR1 = a1 / b1, AR1 is the axis ratio of the elliptical polarization of the transmitting antenna, that is, the ratio of the major axis to the minor axis of the elliptical trajectory formed by the initial polarization vector of the transmitting antenna in the polarization trajectory plane. Without loss of generality, it can be taken as to describe.

[0153] The expression of the initial polarization vector of the receiving antenna is as follows:

[0154]

[0155] In Formula 18, a2 is The component in the direction indicates that the initial polarization vector of the receiving antenna forms the long semi-axis of the elliptical trajectory in the polarization trajectory plane; b2 is The component in the direction indicates that the initial polarization vector of the receiving antenna forms the short semi-axis of the elliptical trajectory in the polarization trajectory plane; a2 and b2 satisfy the polarization orthogonal normalization condition, a2 2 +b2 2 =1.0, and AR2 = a2 / b2, AR2 is the axis ratio of the elliptical polarization of the receiving antenna, that is, the ratio of the major axis to the minor axis of the elliptical trajectory formed by the initial polarization vector of the receiving antenna in the polarization trajectory plane. Without loss of generality, it can be taken as to describe.

[0156] If the polarization characteristic of the transmitting and receiving antennas is right-handed elliptical polarization, the initial polarization vector forms an elliptical trajectory in a counterclockwise direction on the polarization trajectory plane. Based on this principle, the initial polarization vector is corrected. The expression of the corrected initial polarization vector of the transmitting antenna is as follows:

[0157]

[0158] In formula 19, without loss of generality, we can take to describe.

[0159] The expression of the initial polarization vector of the receiving antenna is as follows:

[0160]

[0161] In formula 20, without loss of generality, we can take to describe.

[0162] In S22, the conversion relationship between the three-dimensional spherical coordinate system of the transmitting antenna and the three-dimensional rectangular coordinate system is as follows:

[0163]

[0164] In Formula 21, is the unit vector along the x-axis in the three-dimensional rectangular coordinate system of the transmitting antenna; is the unit vector along the y-axis in the three-dimensional rectangular coordinate system of the transmitting antenna; is the unit vector along the z-axis in the three-dimensional rectangular coordinate system of the transmitting antenna.

[0165] The conversion relationship between the three-dimensional spherical coordinate system of the receiving antenna and the three-dimensional rectangular coordinate system is as follows:

[0166]

[0167] In Formula 22, is the unit vector along the x-axis in the three-dimensional rectangular coordinate system of the receiving antenna; is the unit vector along the y-axis in the three-dimensional rectangular coordinate system of the receiving antenna; is the unit vector along the z-axis in the three-dimensional rectangular coordinate system of the receiving antenna.

[0168] The conversion relationship of the transmitting and receiving antennas is substituted into the expression of the corrected initial polarization vector of the transmitting and receiving antennas to obtain the actual polarization vector.

[0169] If the polarization characteristic of the transmitting and receiving antennas is vertical polarization, θ = 90°, according to formula (5) and formula (21), the expression of the actual polarization vector of the transmitting antenna is as follows:

[0170]

[0171] In Formula 23, is the actual polarization vector of the transmitting antenna.

[0172] Similarly, the expression of the actual polarization vector of the receiving antenna is as follows:

[0173]

[0174] In Formula 24, is the actual polarization vector of the receiving antenna.

[0175] If the polarization characteristics of the transmitting and receiving antennas are horizontal polarization, according to formula (7) and formula (21), the expression of the actual polarization vector of the transmitting antenna can be obtained as follows:

[0176]

[0177] Similarly, the expression of the actual polarization vector of the receiving antenna is as follows:

[0178]

[0179] If the polarization characteristic of the transmitting and receiving antennas is slanted 45° polarization, according to formula (9) and formula (21), the expression of the actual polarization vector of the transmitting antenna is as follows:

[0180]

[0181] Similarly, the expression of the actual polarization vector of the receiving antenna is as follows:

[0182]

[0183] If the polarization characteristics of the transmitting and receiving antennas are slant-45° polarization, according to formula (11) and formula (21), the expression of the actual polarization vector of the transmitting antenna is as follows:

[0184]

[0185] Similarly, the expression of the actual polarization vector of the receiving antenna is as follows:

[0186]

[0187] If the polarization characteristics of the transmitting and receiving antennas are left-hand circular polarization, according to formula (13) and formula (21), the expression of the actual polarization vector of the transmitting antenna can be obtained as follows:

[0188]

[0189] Similarly, the expression of the actual polarization vector of the receiving antenna is as follows:

[0190]

[0191] If the polarization characteristics of the transmitting and receiving antennas are right-hand circular polarization, according to formula (15) and formula (21), the expression of the actual polarization vector of the transmitting antenna can be obtained as follows:

[0192]

[0193] Similarly, the expression of the actual polarization vector of the receiving antenna is as follows:

[0194]

[0195] If the polarization characteristics of the transmitting and receiving antennas are left-hand elliptical polarization, according to formula (17) and formula (21), the expression of the actual polarization vector of the transmitting antenna can be obtained as follows:

[0196]

[0197] Similarly, the expression of the actual polarization vector of the receiving antenna is as follows:

[0198]

[0199] If the polarization characteristics of the transmitting and receiving antennas are right-hand elliptical polarization, according to formula (19) and formula (21), the expression of the actual polarization vector of the transmitting antenna can be obtained as follows:

[0200]

[0201] The expression for the actual polarization vector of the receiving antenna is as follows:

[0202]

[0203] In the actual engineering application of S3, the carrier of the transceiver antenna is usually a dynamically moving device such as an airplane, a ship, or a vehicle, and the transceiver antenna usually forms a rigid structure with its carrier, and its polarization characteristics are defined based on the horizontal plane. For example, the common horizontal polarization and vertical polarization are defined with reference to the horizontal plane. However, when the carrier's posture changes, the polarization vector of the transceiver antenna will also change, causing its polarization characteristics to change. Therefore, it is necessary to collect the carrier's posture data in real time, and determine whether the carrier's posture has changed based on the posture data obtained before and after. When the carrier's posture changes, the actual polarization vector of its onboard antenna is recalculated to accurately reflect its current polarization state.

[0204] In S4, refer to Fig.11 The flowchart of the actual polarization vector updating method is shown, and the actual polarization vector is updated based on the current attitude data of the transmitting and receiving antenna carrier, including the following steps:

[0205] S41: based on the current posture data of the transceiver antenna carrier, obtaining the rotation matrix of the transceiver antenna carrier;

[0206] S42: Update the actual polarization vector of the transceiver antenna based on the rotation matrix of the transceiver antenna carrier.

[0207] In S41, a three-dimensional rectangular coordinate system of the carrier is constructed, and the current posture data of the carrier, that is, the rotation angle around each coordinate axis, is collected in the three-dimensional rectangular coordinate system, specifically including the rotation angle α around the x-axis (horizontal axis), the rotation angle β around the y-axis (longitudinal axis) and the rotation angle γ around the z-axis (vertical axis), and the rotation order is z→y→x.

[0208] Reference Fig.12 The schematic diagram of the aircraft attitude characteristics is displayed. It is assumed that the carrier is an aircraft. A three-dimensional rectangular coordinate system is established with the center point of the aircraft as the coordinate origin. The wingspan direction is defined as the positive x direction, the nose direction is defined as the positive y direction, and the vertical direction between the aircraft and the ground is defined as the positive z direction. The xyz coordinate system is established according to the right-hand rule, and the xoy plane is defined as the horizontal plane.

[0209] The current attitude data of the carrier can be described by the rotation matrix, which is convenient for the subsequent calculation of the new actual polarization vector. Among them, the expression of the rotation matrix of the transmitting antenna carrier is as follows:

[0210]

[0211] In Formula 39, [A1] is the rotation matrix of the transmitting antenna carrier; α1 is the rotation angle of the transmitting antenna carrier around the horizontal axis (x-axis) in the three-dimensional rectangular coordinate system; β1 is the rotation angle of the transmitting antenna carrier around the vertical axis (y-axis) in the three-dimensional rectangular coordinate system; γ1 is the rotation angle of the transmitting antenna carrier around the vertical axis (z-axis) in the three-dimensional rectangular coordinate system.

[0212] The expression of the rotation matrix of the receiving antenna carrier is as follows:

[0213]

[0214] In Formula 40, [A2] is the rotation matrix of the receiving antenna carrier; α2 is the rotation angle of the receiving antenna carrier around the horizontal axis (x-axis) in the three-dimensional rectangular coordinate system; β2 is the rotation angle of the receiving antenna carrier around the vertical axis (y-axis) in the three-dimensional rectangular coordinate system; γ2 is the rotation angle of the receiving antenna carrier around the vertical axis (z-axis) in the three-dimensional rectangular coordinate system.

[0215] In S42, the actual polarization vector is multiplied by the rotation matrix to obtain a new actual polarization vector. The expression of the new actual polarization vector of the transmitting antenna is as follows:

[0216]

[0217] In formula 41, is the new actual polarization vector of the transmitting antenna.

[0218] Similarly, the expression of the new actual polarization vector of the receiving antenna is as follows:

[0219]

[0220] In Formula 42, is the new actual polarization vector of the receiving antenna.

[0221] In S5, even if the posture of the transceiver antenna carrier has not changed, the actual polarization vector needs to be updated regularly, because changes in environmental factors (such as temperature, humidity, electromagnetic interference, etc.), antenna aging, equipment wear and other factors may cause the polarization state of the transceiver antenna to change. Therefore, when the posture of the transceiver antenna carrier has not changed, regularly updating the actual polarization vector is actually a calibration of the wireless transceiver system to ensure that the signal transmission between the transceiver antennas is always in the best state, thereby ensuring that the performance of the wireless transceiver system is always maintained in the best state, improving the reliability and stability of communication.

[0222] In S6, the expression of polarization loss factor is as follows:

[0223]

[0224] In formula 43, ρ is the polarization loss factor between the transmitting and receiving antennas; is the actual polarization vector of the transmitting antenna; is the actual polarization vector of the receiving antenna. The vector dot multiplication of formula 43 can be calculated according to the dot multiplication rule in a three-dimensional rectangular coordinate system. Before the actual polarization vector of the transmitting antenna is updated, equal After the actual polarization vector of the transmitting antenna is updated, equal Before the actual polarization vector of the receiving antenna is updated, equal After the actual polarization vector of the receiving antenna is updated, equal

[0225] It should be noted that the polarization loss factor is the result obtained by multiplying the transmit and receive polarization vectors, and is only used to characterize the polarization matching situation. When calculating the complete transmit and receive link characteristics, in addition to the polarization mismatch factor, it is also necessary to consider the pattern modulation effect when the transmit and receive antennas are not aligned, the antenna transmit and receive efficiency, the transmission loss of the transmit and receive space, the environmental absorption and other factors. Combining these effects with the polarization mismatch factor can accurately analyze and optimize the link characteristics of the wireless transceiver system.

[0226] In S7, the current link quality of the wireless transceiver system is evaluated based on the polarization loss factor, including the calculation of key parameters such as signal strength and signal-to-noise ratio. By continuously monitoring the changes in the polarization loss factor, the degradation of the link quality can be discovered in time. Once a problem is found, the signal loss caused by polarization mismatch can be compensated by adjusting the transmit power and using digital signal processing technology at the receiving end. After the optimization adjustment, the actual polarization vector is measured again, and the link performance is evaluated to see if it has improved until the link performance reaches the expected standard. For future reference and possible further optimization, all measurement data and optimization steps are recorded, and a detailed performance report is generated based on the measurement and optimization results for review and decision-making by relevant parties. Through this method, the polarization loss factor can be dynamically updated and effectively used to optimize the link of the wireless transceiver system, thereby improving the overall communication quality and reliability.

[0227] In summary, the existing antenna polarization definition and analysis methods only define horizontal polarization, vertical polarization, circular polarization, etc. according to the trajectory of the electric field vibration direction, without combining the radiation direction of the transmitting antenna and the receiving direction of the receiving antenna with their polarization characteristics. According to the derivation of this scheme, it can be seen that the radiation direction of the transmitting antenna and the receiving direction of the receiving antenna need to be accurately defined before the polarization characteristics such as horizontal, vertical, and circular polarization can be accurately described mathematically, so as to analyze the polarization characteristics and calculate the polarization mismatch loss. The wireless transceiver system optimization method under dynamic scenarios of the present application provides a mathematically self-consistent antenna polarization characteristic analysis method, which is suitable for link quality analysis, and can also support link optimization, simulation analysis, etc., and solves the problem of polarization characteristic characterization of arbitrary antenna polarization and the coupling of antenna polarization characteristics with the installation platform posture, thereby realizing effective processing of polarization problems in engineering, filling the gap in the prior art of lacking a polarization mismatch loss quantification method that can be actually applied to engineering problems.

[0228] This application also provides a series of specific examples:

[0229] When the carriers of the transmitting and receiving antennas have no attitude changes and the polarization of the transmitting and receiving antennas is matched (the polarization characteristics of the transmitting antenna are the same as those of the receiving antenna), the electromagnetic field theory shows that the polarization loss factor is 1. Here, in order to eliminate the interference of the antenna pattern modulation effect when the transmitting and receiving antennas are not aligned, only the polarization loss when the transmitting and receiving directions are aligned is analyzed.

[0230] At this time, θ1=θ2, α1=β1=γ1=α2=β2=γ2=0, the rotation matrix is ​​the unit matrix, that is, Specifically, when the transmitting antenna and the receiving antenna are both vertically polarized,

[0231]

[0232] therefore, When the transmitting antenna and the receiving antenna are both horizontally polarized,

[0233]

[0234] therefore, When the transmitting antenna and the receiving antenna are both slanted 45° polarized, since θ1=θ2,

[0235] therefore, When the transmitting antenna and the receiving antenna are both slanted -45° polarized, θ1=θ2,

[0236] therefore,

[0237] When both the transmitting antenna and the receiving antenna are left-hand circularly polarized, since θ1 = θ2,

[0238]

[0239] therefore,

[0240] When both the transmitting antenna and the receiving antenna are right-hand circularly polarized, since θ1 = θ2,

[0241]

[0242] therefore,

[0243] Similarly, when the transmitting antenna and the receiving antenna are both left-hand elliptical polarization or right-hand elliptical polarization, the polarization loss factor is also equal to 1, which will not be elaborated here.

[0244] In actual use, different application scenarios and environmental conditions have different requirements for the polarization matching of the transmitting and receiving antennas. Therefore, there may be a situation where the polarization mismatch of the transmitting and receiving antennas (the polarization characteristics of the transmitting antenna are different from the polarization characteristics of the receiving antenna).

[0245] Take the case where the transmitting and receiving antenna carriers have no attitude changes as an example, and without loss of generality: the transmitting antenna is vertically polarized and the receiving antenna is horizontally polarized. Since the vertical polarization and the horizontal polarization are completely orthogonal, the polarization loss factor is 0.

[0246] Right now

[0247] When the transmitting antenna is slanted 45° polarization and the receiving antenna is slanted -45° polarization, θ1 = θ2. The polarizations are completely orthogonal, and the polarization loss factor is 0.

[0248] Right now

[0249] When the transmitting antenna is left-hand circular polarization and the receiving antenna is right-hand circular polarization, θ1 = θ2. Left-hand circular polarization and right-hand circular polarization are completely orthogonal, and the polarization loss factor is 0.

[0250] Right now

[0251] When the transmitting antenna is vertically polarized and the receiving antenna is slanted 45° polarized or slanted -45° polarized, the polarization loss factor is 0.5, that is,

[0252] At this time And ± corresponds to the polarization vector expression for slant ±45° polarization.

[0253] When the transmitting antenna is horizontally polarized and the receiving antenna is slanted 45° polarized or slanted -45° polarized, θ1 = θ2. The polarization loss factor is 0.5,

[0254] Right now

[0255] When the transmitting antenna is vertically polarized and the receiving antenna is circularly polarized, the polarization loss factor is 0.5.

[0256] Right now At this time, ± and Polarization vector expression corresponding to left-hand circular polarization and right-hand circular polarization.

[0257] When the transmitting antenna is horizontally polarized and the receiving antenna is circularly polarized, the polarization loss factor is 0.5, θ1 = θ2,

[0258] Right now

[0259] When the transmitting antenna is slanted 45° polarization or slanted -45° polarization, and the receiving antenna is left-hand circular polarization or right-hand circular polarization, θ1 = θ2. The polarization loss factor is 0.5,

[0260] Right now

[0261] Take the example of the carrier of the transmitting and receiving antenna with attitude changes and without loss of generality:

[0262] Assume that the transmitting antenna and the receiving antenna are both vertically polarized, and the carriers of the transmitting antenna and the receiving antenna are both aircraft. Fig.13 The schematic diagram of the transmitting and receiving antenna carrier is shown. The left figure is a schematic diagram of the transmitting antenna carrier, and the transmitting antenna carrier is rotated 22.5° around the horizontal axis. The right figure is a schematic diagram of the transmitting antenna carrier, and the receiving antenna carrier is rotated -22.5° around the horizontal axis. This situation is equivalent to the angle of the polarization vectors of the transmitting and receiving antennas is 45°, and the polarization loss factor is 0.5.

[0263] Specifically, for the transmitting antenna carrier, at this time, α1=22.5°, β1=γ1=0,

[0264] but

[0265] therefore,

[0266] For the receiving antenna carrier, at this time, α2 = -22.5°, β2 = γ2 = 0,

[0267] but

[0268] therefore,

[0269] get

[0270] Assume that the transmitting antenna is horizontally polarized, its radiation direction is the positive longitudinal axis direction, the receiving antenna is slanted 45° polarized, its receiving direction is the positive longitudinal axis direction, and the carriers of the transmitting antenna and the receiving antenna are both aircraft. Fig.14 Another schematic diagram of the transmitting and receiving antenna carrier is shown. The upper and lower figures on the left are schematic diagrams of the transmitting antenna carrier and the receiving antenna carrier in normal flight, and the upper and lower figures on the right are schematic diagrams of the transmitting antenna carrier and the receiving antenna carrier after the flight attitude changes, in which the transmitting antenna carrier rotates 22.5° around the longitudinal axis and the receiving antenna carrier rotates -22.5° around the longitudinal axis. This situation is equivalent to that the angle of the polarization vectors of the transmitting and receiving antennas is 90°, and the polarization loss factor is 0.

[0271] Specifically, for the transmitting antenna carrier, β1 = 22.5°, α1 = γ1 = 0,

[0272] but

[0273] When the transmitting antenna carrier does not rotate, the radiation direction of the transmitting antenna is in the positive longitudinal axis direction.

[0274] therefore,

[0275] After the transmitting antenna carrier rotates, the actual polarization vector of the transmitting antenna is updated.

[0276] therefore,

[0277] For the receiving antenna carrier, β2 = -22.5°, α2 = γ2 = 0,

[0278] but

[0279] When the receiving antenna carrier does not rotate, the receiving direction of the receiving antenna is the positive longitudinal axis direction.

[0280] therefore,

[0281] After the receiving antenna carrier rotates, the actual polarization vector of the receiving antenna is updated.

[0282]

[0283] get

[0284] According to the above examples, it can be seen that this method can be applied to both static and dynamic scenarios. Especially in dynamic scenarios, it can also timely capture the changes in the actual polarization vectors of the transmitting and receiving antennas, thereby dynamically updating the polarization loss factor, thereby ensuring that the link of the wireless transceiver system can continue to be in the optimal state.

[0285] Reference Fig.15 The present disclosure provides a wireless transceiver system optimization system in a dynamic scenario, comprising:

[0286] An initial polarization vector acquisition module 101 is used to construct a three-dimensional spherical coordinate system of the transmitting and receiving antennas, and to acquire the initial polarization vectors of the transmitting and receiving antennas in the three-dimensional spherical coordinate system;

[0287] The initial polarization vector conversion module 102 is used to convert the initial polarization vector into a representation in a three-dimensional rectangular coordinate system based on the polarization characteristics of the transceiver antenna to obtain the actual polarization vector of the transceiver antenna;

[0288] An actual polarization vector updating module 103 is used to update the actual polarization vector based on the current posture data of the transceiver antenna carrier when the posture of the transceiver antenna carrier changes;

[0289] A polarization loss factor acquisition module 104 is used to acquire a polarization loss factor between the transmitting and receiving antennas by using a vector dot multiplication algorithm based on the current actual polarization vectors of the transmitting and receiving antennas;

[0290] The wireless transceiver system optimization module 105 is used to optimize the link characteristics of the wireless transceiver system based on polarization loss factor analysis.

[0291] The various variations and specific examples of the wireless transceiver system optimization method under dynamic scenarios provided above are also applicable to the wireless transceiver system optimization system under dynamic scenarios provided in the present disclosure. Through the above detailed description of the wireless transceiver system optimization method under dynamic scenarios, technical personnel in this field can clearly know the implementation method of the wireless transceiver system optimization system under dynamic scenarios. For the sake of brevity of the specification, it will not be described in detail here.

[0292] The computer device according to the embodiment of the present disclosure includes a memory and a processor. The memory is used to store non-temporary computer-readable instructions. Specifically, the memory may include one or more computer program products, and the computer program product may include various forms of computer-readable storage media, such as volatile memory and / or non-volatile memory. The volatile memory may, for example, include a random access memory (RAM) and / or a cache memory (cache), etc. The non-volatile memory may, for example, include a read-only memory (ROM), a hard disk, a flash memory, etc.

[0293] The processor may be a central processing unit (CPU) or other forms of processing units with data processing capabilities and / or instruction execution capabilities, and may control other components in the computer device to perform desired functions. In one embodiment of the present disclosure, the processor is used to run the computer-readable instructions stored in the memory, so that the computer device performs all or part of the steps of the wireless transceiver system optimization method under dynamic scenarios of the aforementioned embodiments of the present disclosure.

[0294] Those skilled in the art should be able to understand that in order to solve the technical problem of how to obtain a good user experience, the present embodiment may also include well-known structures such as a communication bus and an interface, and these well-known structures should also be included in the protection scope of the present disclosure.

[0295] like Fig.16 A schematic diagram of the structure of a computer device provided in an embodiment of the present disclosure is shown, which is a schematic diagram of the structure of a computer device suitable for implementing the embodiment of the present disclosure. Fig.16 The computer device shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present disclosure.

[0296] like Fig.16 As shown, the computer device may include a processor (e.g., a central processing unit, a graphics processing unit, etc.), which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) or a program loaded from a storage device into a random access memory (RAM). In the RAM, various programs and data required for the operation of the computer device are also stored. The processor, ROM, and RAM are connected to each other via a bus. An input / output (I / O) interface is also connected to the bus.

[0297] Typically, the following devices can be connected to the I / O interface: input devices such as sensors or visual information acquisition devices; output devices such as display screens; storage devices such as tapes, hard disks, etc.; and communication devices. The communication device can allow the computer device to communicate with other devices (such as edge computing devices) wirelessly or by wire to exchange data. Fig.16A computer device having various devices is shown, but it should be understood that it is not required to implement or possess all of the devices shown. More or fewer devices may be implemented or possessed instead.

[0298] In particular, according to an embodiment of the present disclosure, the process described above with reference to the flowchart can be implemented as a computer software program. For example, an embodiment of the present disclosure includes a computer program product, which includes a computer program carried on a non-transitory computer-readable medium, and the computer program contains program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network through a communication device, or installed from a storage device, or installed from a ROM. When the computer program is executed by a processor, all or part of the steps of the wireless transceiver system optimization method under a dynamic scenario of an embodiment of the present disclosure are executed.

[0299] For detailed description of this embodiment, reference may be made to the corresponding descriptions in the aforementioned embodiments, which will not be repeated here.

[0300] According to the computer-readable storage medium of the embodiment of the present disclosure, non-transitory computer-readable instructions are stored thereon. When the non-transitory computer-readable instructions are executed by the processor, all or part of the steps of the above-mentioned method for optimizing the wireless transceiver system in dynamic scenarios of each embodiment of the present disclosure are executed.

[0301] The above-mentioned computer-readable storage media include, but are not limited to: optical storage media (e.g., CD-ROM and DVD), magneto-optical storage media (e.g., MO), magnetic storage media (e.g., magnetic tape or mobile hard disk), media with built-in rewritable non-volatile memory (e.g., memory card) and media with built-in ROM (e.g., ROM box).

[0302] For detailed description of this embodiment, reference may be made to the corresponding descriptions in the aforementioned embodiments, which will not be repeated here.

[0303] The basic principles of the present disclosure are described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, effects, etc. mentioned in the present disclosure are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. are required by each embodiment of the present disclosure. In addition, the specific details disclosed above are only for the purpose of illustration and ease of understanding, and are not limitations. The above details do not limit the present disclosure to the necessity of adopting the above specific details to be implemented.

[0304] In the present disclosure, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. The block diagrams of the devices, devices, equipment, and systems involved in the present disclosure are only illustrative examples and are not intended to require or imply that they must be connected, arranged, and configured in the manner shown in the block diagram. As will be appreciated by those skilled in the art, these devices, devices, equipment, and systems can be connected, arranged, and configured in any manner. Words such as "including", "comprising", "having", etc. are open words, referring to "including but not limited to", and can be used interchangeably with them. The words "or" and "and" used here refer to the words "and / or" and can be used interchangeably with them, unless the context clearly indicates otherwise. The words "such as" used here refer to the phrase "such as but not limited to", and can be used interchangeably with them.

[0305] Additionally, as used herein, "or" used in a list of items beginning with "at least one" indicates a separate list, so that, for example, a list of "at least one of A, B, or C" means A or B or C, or AB or AC or BC, or ABC (i.e., A and B and C). Furthermore, the word "exemplary" does not mean that the example described is preferred or better than other examples.

[0306] It should also be noted that in the system and method of the present disclosure, each component or each step can be decomposed and / or recombined. Such decomposition and / or recombination should be regarded as equivalent solutions of the present disclosure.

[0307] Various changes, substitutions, and modifications of the techniques described herein may be made without departing from the teachings defined by the appended claims. Furthermore, the scope of the claims of the present disclosure is not limited to the specific aspects of the processes, machines, manufactures, compositions of events, means, methods, and actions described above. Currently existing or later to be developed processes, machines, manufactures, compositions of events, means, methods, or actions that perform substantially the same functions or achieve substantially the same results as the corresponding aspects described herein may be utilized. Thus, the appended claims include such processes, machines, manufactures, compositions of events, means, methods, or actions within their scope.

[0308] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present disclosure. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of the present disclosure. Therefore, the present disclosure is not intended to be limited to the aspects shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

[0309] The above description has been given for the purpose of illustration and description. In addition, this description is not intended to limit the embodiments of the present disclosure to the forms disclosed herein. Although multiple example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions and sub-combinations thereof.

Claims

1. A method for optimizing a wireless transceiver system in a dynamic scenario, characterized in that: include: Constructing a three-dimensional spherical coordinate system of the transmitting and receiving antennas, and obtaining an initial polarization vector of the transmitting and receiving antennas in the three-dimensional spherical coordinate system; Based on the polarization characteristics of the transceiver antenna, the initial polarization vector is converted into a representation in a three-dimensional rectangular coordinate system to obtain an actual polarization vector of the transceiver antenna; When the posture of the transceiver antenna carrier changes, updating the actual polarization vector based on the current posture data of the transceiver antenna carrier; Based on the actual polarization vectors of the transmitting and receiving antennas, the polarization loss factor between the transmitting and receiving antennas is obtained by using a vector dot multiplication algorithm; The link characteristics of the wireless transceiver system are optimized based on the polarization loss factor analysis.

2. The method for optimizing a wireless transceiver system in a dynamic scenario according to claim 1, characterized in that: The transceiver antenna includes a transmitting antenna and a receiving antenna; The obtaining of the initial polarization vector of the transmitting and receiving antenna in the three-dimensional spherical coordinate system includes: Obtaining a radiation direction vector of a transmitting antenna in a three-dimensional spherical coordinate system and a receiving direction vector of a receiving antenna in a three-dimensional spherical coordinate system; Determining a polarization trajectory plane of a transmitting and receiving antenna based on the radiation direction vector and the receiving direction vector; Based on the polarization trajectory plane, an initial polarization vector of the transmitting and receiving antenna is obtained.

3. The method for optimizing a wireless transceiver system in a dynamic scenario according to claim 2, characterized in that: The radiation direction vector is: In the formula, is the radiation direction vector of the transmitting antenna; r1 is the radial distance of the transmitting antenna in the three-dimensional spherical coordinate system; θ1 is the polar angle of the radiation direction vector of the transmitting antenna in the three-dimensional spherical coordinate system; A is the azimuth of the radiation direction vector of the transmitting antenna in the three-dimensional spherical coordinate system; r1 is the radial component of the radiation direction vector of the transmitting antenna in the three-dimensional spherical coordinate system; is the radial unit vector in the three-dimensional spherical coordinate system of the transmitting antenna; A θ1 is the latitudinal component of the radiation direction vector of the transmitting antenna in the three-dimensional spherical coordinate system; is the latitudinal unit vector in the three-dimensional spherical coordinate system of the transmitting antenna; is the meridional component of the radiation direction vector of the transmitting antenna in the three-dimensional spherical coordinate system; is the meridional unit vector in the three-dimensional spherical coordinate system of the transmitting antenna.

4. The method for optimizing a wireless transceiver system in a dynamic scenario according to claim 3, characterized in that: The receiving direction vector is: In the formula, is the receiving direction vector of the receiving antenna; r2 is the radial distance of the receiving antenna in the three-dimensional spherical coordinate system; θ2 is the polar angle of the receiving direction vector of the receiving antenna in the three-dimensional spherical coordinate system; A is the azimuth of the receiving direction vector of the receiving antenna in the three-dimensional spherical coordinate system; r2 is the radial component of the receiving direction vector of the receiving antenna in the three-dimensional spherical coordinate system; is the radial unit vector in the three-dimensional spherical coordinate system of the receiving antenna; A θ2 is the latitudinal component of the receiving direction vector of the receiving antenna in the three-dimensional spherical coordinate system; is the latitudinal unit vector in the three-dimensional spherical coordinate system of the receiving antenna; is the meridional component of the receiving direction vector of the receiving antenna in the three-dimensional spherical coordinate system; is the meridional unit vector in the three-dimensional spherical coordinate system of the receiving antenna.

5. The method for optimizing a wireless transceiver system in a dynamic scenario according to claim 4, characterized in that: The initial polarization vector of the transmitting antenna is: In the formula, is the initial polarization vector of the transmitting antenna; The initial polarization vector of the receiving antenna is: In the formula, is the initial polarization vector of the transmitting antenna.

6. The method for optimizing a wireless transceiver system in a dynamic scenario according to claim 1, characterized in that: The converting the initial polarization vector into a representation in a three-dimensional rectangular coordinate system based on the polarization characteristics of the transceiver antenna to obtain the actual polarization vector of the transceiver antenna includes: Based on the polarization characteristic, modifying the initial polarization vector; Based on the conversion relationship between the three-dimensional spherical coordinate system and the three-dimensional rectangular coordinate system of the transmitting and receiving antennas, the corrected initial polarization vector is converted into an actual polarization vector.

7. The method for optimizing a wireless transceiver system in a dynamic scenario according to claim 1, characterized in that: The updating of the actual polarization vector based on the current posture data of the transmitting and receiving antenna carrier includes: Based on the current posture data of the transmitting and receiving antenna carrier, a rotation matrix of the transmitting and receiving antenna carrier is obtained; The actual polarization vectors of the transmitting and receiving antennas are updated based on the rotation matrix of the transmitting and receiving antenna carriers.

8. The method for optimizing a wireless transceiver system in a dynamic scenario according to claim 1, characterized in that: The polarization loss factor is: Where ρ is the polarization loss factor between the transmitting and receiving antennas; is the actual polarization vector of the transmitting antenna; is the actual polarization vector of the receiving antenna.

9. The method for optimizing a wireless transceiver system in a dynamic scenario according to claim 1, characterized in that: Also includes: When the posture of the transmitting and receiving antenna carrier does not change, the actual polarization vector is updated regularly.

10. A computer device, characterized in that: The computer device comprises: at least one processor; and, a memory communicatively connected to the at least one processor; wherein, The memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the wireless transceiver system optimization method in a dynamic scenario as described in any one of claims 1-7.

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