Method and device for small-aperture antenna to resist interference from neighboring satellites, and small-aperture antenna array

Abstract

The present invention discloses a method and device for small-aperture antennas to resist neighboring satellite interference, and a small-aperture antenna array, and belongs to the field of satellite communication technology. The method includes: based on the ephemeris diagram, the geographical location information of the small-aperture antenna array, and the current time information, controlling the orientation of each small-aperture antenna included in the small-aperture antenna array, so that each small-aperture antenna is aimed at each target satellite at the current time; the number of target satellites is less than or equal to the number of small-aperture antennas included in the small-aperture antenna array; the same-frequency beam of the target satellite at the current time covers the small-aperture antenna array; obtaining the signal received by each small-aperture antenna at the current time; based on each received signal and the directional diagram of each small-aperture antenna, obtaining the neighboring satellite interference-free signal received by each small-aperture antenna at the current time. The method and device for small-aperture antennas to resist neighboring satellite interference, and the small-aperture antenna array disclosed by the present invention have excellent anti-neighboring satellite interference effect.

Description

Technical Field

[0001] The present invention relates to the technical field of satellite communication, and in particular to a method and device for a small-aperture antenna to resist interference from neighboring satellites, and a small-aperture antenna array. Background Art

[0002] Small-aperture antennas are an important trend in the future development of satellite communications, which will gradually reduce the antenna aperture of satellite ground stations from tens of meters to several meters, and then to less than one meter. The application of small-aperture antenna arrays is becoming more and more extensive. Because of their lightness, portability, and rapid response, they are very suitable for sudden communications or emergency communications in outdoor scenes.

[0003] However, small-aperture antennas have the characteristics of wide beams and high side lobes, which can easily cause serious interference from neighboring satellites. Neighboring satellite interference is the same-frequency interference generated by satellites in adjacent orbits in the common coverage area. Because the two satellites are too close to each other, the downlink electromagnetic fields of the interfered satellite and the interfering satellite have overlapping coverage intervals. In the overlapping coverage interval, while the ground station of the interfered satellite receives the signal from the interfered satellite, its antenna side lobes also receive the same-frequency signal from the neighboring satellite. Although the impact of neighboring satellite interference can be reduced by isolating the beam coverage area and frequency of the neighboring satellite and by reducing the side lobes of the antenna, the phenomenon of neighboring satellite interference is increasing under the current reality of increasingly crowded geosynchronous orbits.

[0004] At present, there are two main ways to suppress or reduce the neighboring satellite interference of small-aperture antennas: reducing the antenna beam width and improving the antenna pointing accuracy. However, the above methods still have the disadvantage of limited effect in reducing neighboring satellite interference. Summary of the invention

[0005] The object of the present invention is to provide a method and device for resisting interference from neighboring satellites by using a small-aperture antenna, and a small-aperture antenna array, which can more effectively resist interference from neighboring satellites.

[0006] To achieve the above object, the present invention provides a method for a small-aperture antenna to resist interference from neighboring satellites, comprising:

[0007] Based on the ephemeris diagram, the geographical location information of the small-aperture antenna array and the current time information, the azimuth of each small-aperture antenna included in the small-aperture antenna array is controlled so that each small-aperture antenna is aligned with each target satellite at the current time; the small-aperture antenna array includes a plurality of the small-aperture antennas; the number of the target satellites is less than or equal to the number of the small-aperture antennas included in the small-aperture antenna array; the same-frequency beam of the target satellite at the current time covers the small-aperture antenna array;

[0008] Acquire the signal received by each of the small-aperture antennas at the current time;

[0009] Based on each of the received signals and the directional diagram of each of the small-aperture antennas, a neighboring satellite interference-removing signal of each of the target satellites received by each of the small-aperture antennas at the current time is obtained.

[0010] In one embodiment of the present invention, after obtaining the neighboring satellite interference removal signal received by each of the small-aperture antennas at the current time based on each of the received signals and the directional diagram of each of the small-aperture antennas, it further includes:

[0011] Based on the current time, the target antenna receives the neighboring satellite interference removal signal of the target satellite corresponding to the target antenna, and fine-tunes the azimuth of the target antenna so that the carrier-to-noise ratio of the signal of the target satellite corresponding to the target antenna received by the target antenna is maximized; the target antenna includes at least one of the small-aperture antennas;

[0012] Acquire new signals received by each of the small-aperture antennas;

[0013] Based on each of the new signals and the directional diagram of each of the small-aperture antennas, a new neighboring satellite interference-removing signal of the target satellite corresponding to each of the target antennas is obtained when each of the target antennas receives the target satellite.

[0014] In one embodiment of the present invention, the obtaining, based on each of the received signals and the directional diagram of each of the small-aperture antennas, a neighboring satellite interference-free signal received by each of the small-aperture antennas at the current time for each of the target satellites, includes:

[0015] Based on the directional pattern of each of the small-aperture antennas, obtaining the gain of each of the small-aperture antennas in receiving each of the target satellites;

[0016] Based on each of the received signals and the gain of each of the small-aperture antennas receiving each of the target satellites, each of the neighboring satellite interference removal signals is acquired.

[0017] In one embodiment of the present invention, the controlling the orientation of each small-aperture antenna included in the small-aperture antenna array based on the ephemeris diagram, the geographical location information of the small-aperture antenna array and the current time information includes:

[0018] Based on the ephemeris diagram, the geographical location information and the current time information, obtaining the position of the target satellite at the current time;

[0019] Based on the azimuth of the target satellite at the current time, the azimuth of each small-aperture antenna is controlled so that each small-aperture antenna is aligned with each target satellite at the current time.

[0020] In one embodiment of the present invention, the obtaining the position of the target satellite at the current time based on the ephemeris diagram, the geographical location information and the information of the current time includes:

[0021] Based on the ephemeris diagram, the geographical location information and the current time information, obtaining the position of each satellite at the current time;

[0022] The satellite whose same-frequency beam at the current time covers the small-aperture antenna array is determined as the target satellite.

[0023] In one embodiment of the present invention, a small-aperture antenna anti-neighboring satellite interference device includes:

[0024] A control module is used to control the orientation of each small-aperture antenna included in the small-aperture antenna array based on the ephemeris diagram, the geographical location information of the small-aperture antenna array and the current time information, so that each of the small-aperture antennas is aligned with each target satellite at the current time; the small-aperture antenna array includes a plurality of the small-aperture antennas; the number of the target satellites is less than or equal to the number of the small-aperture antennas included in the small-aperture antenna array; and the same-frequency beam of the target satellite at the current time covers the small-aperture antenna array;

[0025] A receiving module, used to obtain the signal received by each of the small-aperture antennas at the current time;

[0026] The acquisition module is used to acquire the neighboring satellite interference-removed signal of each target satellite received by each small-aperture antenna at the current time based on each received signal and the directional diagram of each small-aperture antenna.

[0027] In one embodiment of the present invention, a small-aperture antenna array is characterized in that it includes: a small-aperture antenna anti-neighboring satellite interference device as described in any one of the above, multiple small-aperture antennas, and a motor and a positioning device for controlling the orientation of each of the small-aperture antennas.

[0028] In one embodiment of the present invention, an electronic device includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, the steps of any of the above-mentioned methods for small-aperture antennas to resist neighboring satellite interference are implemented.

[0029] In one embodiment of the present invention, a non-transitory computer-readable storage medium stores a computer program, which, when executed by a processor, implements the steps of any of the above-mentioned methods for small-aperture antennas to resist neighboring satellite interference.

[0030] In one embodiment of the present invention, a computer program product includes a computer program, and when the computer program is executed by a processor, the steps of any of the above-mentioned methods for small-aperture antennas to resist neighboring satellite interference are implemented.

[0031] Compared with the prior art, the method and device for preventing neighboring satellite interference with a small-aperture antenna and the small-aperture antenna array of the present invention have the following beneficial effects: BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 1 is a flow chart of a method for a small-aperture antenna to resist interference from neighboring satellites according to an embodiment of the present invention;

[0033] Figure 2 2 is a schematic diagram of the direction of the plane antenna in the method for small-aperture antenna to resist neighboring satellite interference according to an embodiment of the present invention;

[0034] Figure 3 2 is a schematic structural diagram of a device for preventing neighboring satellite interference with a small-aperture antenna according to an embodiment of the present invention;

[0035] Figure 4 is a schematic structural diagram of a small-aperture antenna array resistant to neighboring satellite interference according to an embodiment of the present invention;

[0036] Figure 5 is a schematic structural diagram of an electronic device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0037] The specific implementation modes of the present invention are described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific implementation modes.

[0038] Unless explicitly stated otherwise, throughout the specification and claims, the term “comprise” or variations such as “include” or “comprising”, etc., will be understood to include the stated elements or components but not to exclude other elements or components.

[0039] like Figures 1 to 5 As shown, the method and device for small-aperture antenna anti-neighboring satellite interference and the small-aperture antenna array according to the preferred embodiment of the present invention can be implemented in the following manner.

[0040] Figure 1 FIG. 1 is a flow chart of a method for a small-aperture antenna to resist interference from neighboring satellites according to an embodiment of the present invention. Figure 1 As shown, the method may include the following steps: step 101, step 102, step 103 and step 104.

[0041] Step 101: Based on the ephemeris diagram, the geographic location information of the small-aperture antenna array and the current time information, the orientation of each small-aperture antenna included in the small-aperture antenna array is controlled so that each small-aperture antenna is aligned with each target satellite at the current time; the small-aperture antenna array includes a plurality of small-aperture antennas; the number of target satellites is less than or equal to the number of small-aperture antennas included in the small-aperture antenna array; and the same-frequency beam of the target satellite covers the small-aperture antenna array at the current time.

[0042] Specifically, the small-aperture antenna array may be a small-aperture antenna array included in a portable satellite earth station or the like. The small-aperture antenna array includes a plurality of small-aperture antennas. The aperture of each small-aperture antenna may be less than 10 meters. Preferably, the aperture of each small-aperture antenna may be less than 1 meter. The small-aperture antenna may be a planar antenna.

[0043] The ephemeris of each satellite can be stored in advance. Ephemeris is a table of the precise position or trajectory of a celestial body as it moves over time, and it is a function of time.

[0044] The small-aperture antenna array can be positioned by at least one global satellite navigation and positioning system such as GPS and Beidou to obtain the geographical location information of the small-aperture antenna array. The geographical location information may include longitude and latitude.

[0045] Preferably, based on the ephemeris diagram, the geographical location information of the small-aperture antenna array and the current time information, the orientation of each small-aperture antenna included in the small-aperture antenna array is controlled, including:

[0046] Based on the ephemeris diagram, the geographical location information and the current time information, the position of the target satellite at the current time is obtained;

[0047] Based on the azimuth of the target satellite at the current time, the azimuth of each small-aperture antenna is controlled so that each small-aperture antenna is aligned with each target satellite at the current time.

[0048] Preferably, based on the ephemeris diagram, the geographical location information and the information of the current time, obtaining the position of the target satellite at the current time includes:

[0049] Based on the ephemeris diagram, geographic location information and current time information, obtain the position of each satellite at the current time;

[0050] The satellite whose same-frequency beam covers the small-aperture antenna array at the current time is determined as the target satellite.

[0051] It can be understood that after the target satellite is determined, the position of each target satellite at the current time can be obtained.

[0052] Step 102: Acquire the signals received by each small-aperture antenna at the current time.

[0053] Specifically, at the current time, each small-aperture antenna can receive the signal of the target satellite. It can be understood that, for each small-aperture antenna, the signal received by the small-aperture antenna at the current time is the superposition of the signals of each target satellite.

[0054] Step 103: Based on each received signal and the directional diagram of each small-aperture antenna, obtain the neighboring satellite interference-removing signal of each target satellite received by each small-aperture antenna at the current time.

[0055] Specifically, according to the antenna theory, the smaller the aperture, the lower the gain of the antenna, the wider the main lobe beam, and the higher the side lobe. The beam width of the antenna is generally measured by the angle at which the main lobe gain drops by half. In engineering, the formula for beam width is generally:

[0056]

[0057] Among them, λ is the wavelength of the working signal and D is the antenna aperture.

[0058] The radiation pattern of the planar antenna can be Figure 2 The azimuth pattern of each antenna can be obtained in advance through measurement.

[0059] Preferably, based on each received signal and the directional diagram of each small-aperture antenna, obtaining the neighboring satellite interference-free signal received by each small-aperture antenna for each target satellite at the current time includes:

[0060] Based on the directional pattern of each small-aperture antenna, the gain of each small-aperture antenna in receiving each target satellite is obtained;

[0061] Based on each received signal and the gain of each small-aperture antenna receiving each target satellite, each neighboring satellite interference removal signal is obtained.

[0062] The small-aperture antenna array includes n small-aperture antennas (n is a positive integer, preferably a positive integer greater than or equal to 2), and the n-channel receiving signal (i.e., the received signal) is {s i |i=1,2,...,n},s i is the superposition of multiple co-frequency satellite signals (i.e., signals of m target satellites, where m is an integer less than or equal to n). Based on the pre-obtained directional patterns of n small-aperture antennas, the gain of the i-th small-aperture antenna receiving the j-th satellite can be found, denoted as {a i，j |i=1,2,...,n,j=1,2,...,m}. is a single-channel satellite signal, that is is the signal of the Jth satellite (the satellite number is not case sensitive). Therefore, the following formula can be obtained:

[0063]

[0064] Gain matrix A = {a i，j |i=1,2,...,n,j=1,2,...,m;a i，i =1,i=j;0 i,j <1,i≠j}, let the target satellite corresponding to the i-th small-aperture antenna be the i-th satellite, that is, the source of the signal that the i-th small-aperture antenna needs to receive is the i-th satellite. The matrix A is reversible, so equation (1) has a solution That is, the signal of the target satellite corresponding to each small-aperture antenna received by the antenna after the interference from the neighboring satellite is removed (the above signal is the signal without the interference from the neighboring satellite and can be used as the optimal estimation signal or the excellent estimation signal).

[0065] Preferably, after obtaining the neighboring satellite interference removal signal of each target satellite received by each small-aperture antenna at the current time based on each received signal and the directional diagram of each small-aperture antenna, the method further includes:

[0066] Based on the current time, the target antenna receives the interference-removed neighboring satellite signal of the target satellite corresponding to the target antenna, and fine-tunes the azimuth of the target antenna so that the carrier-to-noise ratio of the signal of the target satellite corresponding to the target antenna received by the target antenna is maximized; the target antenna includes at least one of the small-aperture antennas;

[0067] Obtain new signals received by each small-aperture antenna;

[0068] Based on each received signal and the directional diagram of each small-aperture antenna, a neighboring satellite interference-removing signal of a target satellite corresponding to each target antenna received by each target antenna is obtained.

[0069] Without loss of generality, assume that the signal It is the signal that needs to be received. The carrier-to-noise ratio is adjusted by fine-tuning the azimuth of the small aperture antenna J. When the carrier-to-noise ratio reaches a maximum value, the orientation of the small aperture antenna J is the optimal orientation. Then, step S102 and step S103 are performed here. For the excellent received signal after removing the neighboring satellite interference for the small aperture antenna J, a better effect of removing the neighboring satellite interference can be obtained. At this time, the received superimposed signal can be called the received signal, and the signal after removing the neighboring satellite interference can be called the neighboring satellite interference-removed signal.

[0070] ​The beneficial effect of the present invention is that, based on the ephemeris diagram, the geographical location information of the small-aperture antenna array and the information of the current time, the azimuth of each small-aperture antenna included in the small-aperture antenna array is controlled, so that after each small-aperture antenna is aligned with each target satellite at the current time, the signal received by each small-aperture antenna at the current time is obtained, and based on the signal received by each small-aperture antenna at the current time and the directional diagram of each small-aperture antenna, the neighboring satellite interference-removing signal of each small-aperture antenna receiving each target satellite at the current time is obtained, which can more effectively remove the neighboring satellite interference and has a better effect of resisting the neighboring satellite interference.

[0071] The small-aperture antenna anti-neighboring satellite interference device provided by the present invention is described below. The small-aperture antenna anti-neighboring satellite interference device described below and the small-aperture antenna anti-neighboring satellite interference method described above can be referred to each other.

[0072] Figure 3 is a schematic diagram of the structure of a small-aperture antenna anti-interference device for neighboring satellites according to an embodiment of the present invention. Based on the contents of any of the above embodiments, Figure 3 As shown, the device includes a control module 301, a receiving module 302 and an acquisition module 303, wherein:

[0073] The control module 301 is used to control the orientation of each small-aperture antenna included in the small-aperture antenna array based on the ephemeris diagram, the geographical location information of the small-aperture antenna array and the current time information, so that each small-aperture antenna is aligned with each target satellite at the current time; the small-aperture antenna array includes a plurality of small-aperture antennas; the number of target satellites is less than or equal to the number of small-aperture antennas included in the small-aperture antenna array; and the same-frequency beam of the target satellite at the current time covers the small-aperture antenna array;

[0074] A receiving module 302 is used to obtain the signal received by each small-aperture antenna at the current time;

[0075] The acquisition module 303 is used to acquire the neighboring satellite interference-removed signal of each target satellite received by each small-aperture antenna at the current time based on each received signal and the directional diagram of each small-aperture antenna.

[0076] Specifically, the control module 301 , the receiving module 302 and the acquiring module 303 may be electrically connected in sequence.

[0077] Optionally, the control module 301 may also be used to fine-tune the azimuth of the target antenna based on the target antenna receiving the target satellite corresponding to the target antenna at the current time to maximize the carrier-to-noise ratio of the signal of the target satellite corresponding to the target antenna received by the target antenna; the target antenna includes at least one of the small-aperture antennas;

[0078] The receiving module 302 may also be used to obtain new signals received by each small-aperture antenna;

[0079] The acquisition module 303 may also be used to acquire, based on each new signal and the directional pattern of each small-aperture antenna, a new neighboring satellite interference-removed signal of a target satellite corresponding to each target antenna received by each target antenna.

[0080] Optionally, the acquisition module 303 may include:

[0081] A gain acquisition unit, used for acquiring the gain of each small-aperture antenna receiving each target satellite based on the directivity diagram of each small-aperture antenna;

[0082] The interference removal unit is used to obtain each neighboring satellite interference removal signal based on each received signal and the gain of each small-aperture antenna receiving each target satellite.

[0083] Optionally, the control module 301 may include:

[0084] A position acquisition unit, used to acquire the position of the target satellite at the current time based on the ephemeris map, the geographical location information and the current time information;

[0085] The azimuth control unit is used to control the azimuth of each small-aperture antenna based on the azimuth of the target satellite at the current time, so that each small-aperture antenna is aligned with each target satellite at the current time.

[0086] Optionally, the position acquisition unit may be specifically used for:

[0087] Based on the ephemeris diagram, geographic location information and current time information, obtain the position of each satellite at the current time;

[0088] The satellite whose same-frequency beam covers the small-aperture antenna array at the current time is determined as the target satellite.

[0089] The small-aperture antenna anti-neighboring satellite interference device provided in an embodiment of the present invention is used to execute the small-aperture antenna anti-neighboring satellite interference method of the present invention. Its implementation method is consistent with the implementation method of the small-aperture antenna anti-neighboring satellite interference method provided by the present invention, and can achieve the same beneficial effects, which will not be repeated here.

[0090] The small-aperture antenna anti-neighboring satellite interference device is used in the small-aperture antenna anti-neighboring satellite interference method of the aforementioned embodiments. Therefore, the description and definition of the small-aperture antenna anti-neighboring satellite interference method in the aforementioned embodiments can be used for understanding each execution module in the embodiments of the present invention.

[0091] The beneficial effect of the present invention is that, based on the ephemeris diagram, the geographical location information of the small-aperture antenna array and the information of the current time, the azimuth of each small-aperture antenna included in the small-aperture antenna array is controlled, so that after each small-aperture antenna is aligned with each target satellite at the current time, the signal received by each small-aperture antenna at the current time is obtained, and based on the signal received by each small-aperture antenna at the current time and the directional diagram of each small-aperture antenna, the neighboring satellite interference-removing signal of each small-aperture antenna receiving each target satellite at the current time is obtained, which can more effectively remove the neighboring satellite interference and has a better effect of resisting the neighboring satellite interference.

[0092] Figure 4 Schematic diagram of the structure of a small-aperture antenna array that resists neighboring satellite interference according to an embodiment of the present invention. Figure 4 As shown, a small-aperture antenna array includes: a small-aperture antenna anti-neighboring satellite interference device, multiple small-aperture antennas, and a motor and a positioning device for controlling the azimuth of each small-aperture antenna.

[0093] Specifically, the small-aperture antenna anti-neighboring satellite interference device may be the small-aperture antenna anti-neighboring satellite interference device provided by any of the aforementioned embodiments. Optionally, the small-aperture antenna anti-neighboring satellite interference device may be a DSP unit, etc. The small-aperture antenna array may be widely used in, etc.

[0094] For rapid deployment, the portable satellite earth station can have a Beidou and / or GPS positioning device. The above positioning device can be used to obtain the latitude and longitude information and time information of the satellite earth station based on the satellite positioning system. Based on the above longitude and latitude information, time information and pre-stored ephemeris diagrams, the positions of multiple satellites corresponding to the portable satellite earth station covered by the same frequency beam can be calculated. The above multiple satellites are target satellites.

[0095] Ephemeris is publicly available and can be pre-stored in Figure 4 The small-aperture antenna is used in the device to resist interference from neighboring satellites.

[0096] like Figure 4 As shown, the small aperture antenna array may include 9 small aperture antennas: planar antenna 1 to planar antenna 9. Each small aperture antenna is respectively associated with a motor for controlling the azimuth of each small aperture antenna: azimuth motor 1 to azimuth motor 9.

[0097] The azimuth diagram of each planar antenna can be measured in advance, and the azimuth diagram data of each planar antenna can be stored in a small-aperture antenna anti-neighboring satellite interference device.

[0098] The working process of the small-aperture antenna array is as follows.

[0099] 1. Adjustment of receiving direction of 9-element small-aperture antenna array

[0100] According to the pre-stored ephemeris diagram and the latitude and longitude information and time information from the positioning device, the multiple satellite positions (up to 9) corresponding to the portable satellite earth station covered by the same frequency beam can be calculated. The small-aperture antenna anti-neighboring satellite interference device sends azimuth information, and controls azimuth motors 1 to 9 through 9-way azimuth motor controllers, thereby controlling the azimuths of up to 9 planar antennas, so as to aim at 9 satellites respectively.

[0101] 2. Data Collection

[0102] The signals received by the 9 ground antennas can be input into a 9-channel synchronous ADC, and the small-aperture antenna anti-neighboring satellite interference device can obtain the signals received by the 9 ground antennas through the 9-channel synchronous ADC.

[0103] 3. Calculation

[0104] Assume that the 9-channel receiving signal is {s i |i=1,2,...,9},s i is the superposition of multiple co-frequency satellite signals. According to the pre-stored directional diagram, the gain of the i-th antenna receiving the j-th satellite can be found, which is recorded as {a i，j |i=1,2,...,9,j=1,2,...,9}. To receive the signal from a single satellite, the following formula can be obtained:

[0105]

[0106] Matrix A={a i，j |i=1,2,...,9,j=1,2,...,9,a i，i =1,i=1,...,9,0 i,j <1,i≠j}. Matrix A is reversible, so equation (2) has a solution That’s what you want.

[0107] 4. Adjustment

[0108] Without loss of generality, assume that the signal is the signal to be received, we can estimate The carrier-to-noise ratio is adjusted by fine-tuning the azimuth of antenna 1. When the carrier-to-noise ratio reaches a maximum value, the orientation of antenna 1 is the best orientation. To achieve the best reception signal after removing the interference from neighboring satellites.

[0109] It should be noted that the above embodiments and Figure 4 ​Although the example of a small-aperture antenna array including 9 small-aperture antennas is used, those skilled in the art can understand the case where the number of small-aperture antennas included in the small-aperture antenna array is other values. The case where the number of small-aperture antennas included in the small-aperture antenna array is other values ​​will not be described in detail here.

[0110] The beneficial effect of the present invention is that, based on the ephemeris diagram, the geographical location information of the small-aperture antenna array and the information of the current time, the azimuth of each small-aperture antenna included in the small-aperture antenna array is controlled, so that after each small-aperture antenna is aligned with each target satellite at the current time, the signal received by each small-aperture antenna at the current time is obtained, and based on the signal received by each small-aperture antenna at the current time and the directional diagram of each small-aperture antenna, the neighboring satellite interference-removing signal of each small-aperture antenna receiving each target satellite at the current time is obtained, which can more effectively remove the neighboring satellite interference and has a better effect of resisting the neighboring satellite interference.

[0111] Figure 5 An example of a physical structure diagram of an electronic device is shown in FIG. Figure 5 As shown, the electronic device may include: a processor 510, a communication interface 520, a memory 530 and a communication bus 540, wherein the processor 510, the communication interface 520 and the memory 530 communicate with each other through the communication bus 540. The processor 510 may call the logic instructions in the memory 530 to execute the small-aperture antenna anti-neighboring satellite interference method, which includes: based on the ephemeris map, the geographical location information of the small-aperture antenna array and the current time information, controlling the orientation of each small-aperture antenna included in the small-aperture antenna array so that each small-aperture antenna is aligned with each target satellite at the current time; the small-aperture antenna array includes a plurality of small-aperture antennas; the number of target satellites is less than or equal to the number of small-aperture antennas included in the small-aperture antenna array; the same-frequency beam of the target satellite at the current time covers the small-aperture antenna array; obtaining the signal received by each small-aperture antenna at the current time; based on each received signal and the directional diagram of each small-aperture antenna, obtaining the anti-neighboring satellite interference signal received by each small-aperture antenna at the current time for each target satellite.

[0112] In addition, the logic instructions in the above-mentioned memory 530 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc. Various media that can store program codes.

[0113] The processor 510 in the electronic device provided in the embodiment of the present invention can call the logic instructions in the memory 530. Its implementation method is consistent with the implementation method of the small-aperture antenna anti-neighboring satellite interference method provided by the present invention, and can achieve the same beneficial effects, which will not be repeated here.

[0114] On the other hand, the present invention also provides a computer program product, which includes a computer program stored on a non-transitory computer-readable storage medium, and the computer program includes program instructions. When the program instructions are executed by a computer, the computer can execute the small-aperture antenna anti-neighboring satellite interference method provided by the above methods, the method including: based on the ephemeris map, the geographical location information of the small-aperture antenna array and the current time information, controlling the azimuth of each small-aperture antenna included in the small-aperture antenna array so that each small-aperture antenna is aligned with each target satellite at the current time; the small-aperture antenna array includes multiple small-aperture antennas; the number of target satellites is less than or equal to the number of small-aperture antennas included in the small-aperture antenna array; the same-frequency beam of the target satellite at the current time covers the small-aperture antenna array; obtain the signal received by each small-aperture antenna at the current time; based on each received signal and the directional diagram of each small-aperture antenna, obtain the neighboring satellite interference removal signal received by each small-aperture antenna at the current time for each target satellite.

[0115] When the computer program product provided in the embodiment of the present invention is executed, the above-mentioned method for small-aperture antenna to resist neighboring satellite interference is implemented. Its specific implementation method is consistent with the implementation method recorded in the embodiment of the aforementioned method, and can achieve the same beneficial effects, which will not be repeated here.

[0116] On the other hand, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which is implemented when the processor executes the above-mentioned small-aperture antenna anti-neighboring satellite interference method, the method comprising: based on the ephemeris map, the geographical location information of the small-aperture antenna array and the current time information, controlling the azimuth of each small-aperture antenna included in the small-aperture antenna array so that each small-aperture antenna is aimed at each target satellite at the current time; the small-aperture antenna array comprises multiple small-aperture antennas; the number of target satellites is less than or equal to the number of small-aperture antennas included in the small-aperture antenna array; the same-frequency beam of the target satellite covers the small-aperture antenna array at the current time; obtaining the signal received by each small-aperture antenna at the current time; based on each received signal and the directional diagram of each small-aperture antenna, obtaining the neighboring satellite interference removal signal received by each small-aperture antenna at the current time for each target satellite.

[0117] When the computer program stored on the non-transitory computer-readable storage medium provided by the embodiment of the present invention is executed, the above-mentioned small-aperture antenna anti-neighboring satellite interference method is implemented. Its specific implementation method is consistent with the implementation method recorded in the embodiment of the aforementioned method, and can achieve the same beneficial effects, which will not be repeated here.

[0118] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0119] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0120] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0121] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0122] The foregoing description of specific exemplary embodiments of the present invention is for the purpose of illustration and demonstration. These descriptions are not intended to limit the present invention to the precise form disclosed, and it is clear that many changes and variations can be made based on the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art can realize and utilize various different exemplary embodiments of the present invention and various different selections and changes. The scope of the present invention is intended to be limited by the claims and their equivalents.

Claims

1. A method for small-aperture antenna to resist interference from neighboring satellites, characterized in that: include: Based on the ephemeris diagram, the geographical location information of the small-aperture antenna array and the current time information, the azimuth of each small-aperture antenna included in the small-aperture antenna array is controlled so that each small-aperture antenna is aligned with each target satellite at the current time; the small-aperture antenna array includes a plurality of the small-aperture antennas; The number of the target satellites is less than or equal to the number of the small-aperture antennas included in the small-aperture antenna array; the same-frequency beam of the target satellite at the current time covers the small-aperture antenna array; Acquire the signal received by each of the small-aperture antennas at the current time; Based on each of the received signals and the directional diagram of each of the small-aperture antennas, obtaining a neighboring satellite interference-removing signal of each of the target satellites received by each of the small-aperture antennas at the current time; The step of obtaining, based on each of the received signals and the directional diagram of each of the small-aperture antennas, a neighboring satellite interference-free signal received by each of the small-aperture antennas at the current time for each of the target satellites, comprises: Based on the directional pattern of each of the small-aperture antennas, obtaining the gain of each of the small-aperture antennas in receiving each of the target satellites; Based on each of the received signals and the gain of each of the small-aperture antennas receiving each of the target satellites, each of the neighboring satellite interference removal signals is acquired; The obtaining of each of the neighboring satellite interference removal signals based on each of the received signals and the gain of each of the small-aperture antennas receiving each of the target satellites is obtained by solving the following equation: The small-aperture antenna array includes n small-aperture antennas, where n is a positive integer; i is the signal of m target satellites, m is a positive integer less than or equal to n; the gain of the i-th small-aperture antenna receiving the j-th satellite is denoted as {a i，j |i=1,2,...,n,j=1,2,...,m}; is a single-channel satellite signal, that is is the signal of the jth satellite; the solution of the equation That is, the signal of the target satellite corresponding to each small-aperture antenna received by the small-aperture antenna after removing the interference from the neighboring satellites.

2. The method for small-aperture antenna to resist neighboring satellite interference according to claim 1, characterized in that: After obtaining the neighboring satellite interference removal signal of each target satellite received by each small-aperture antenna at the current time based on each received signal and the directional diagram of each small-aperture antenna, the method further includes: Based on the current time, the target antenna receives the neighboring satellite interference removal signal of the target satellite corresponding to the target antenna, and fine-tunes the azimuth of the target antenna so that the carrier-to-noise ratio of the signal of the target satellite corresponding to the target antenna received by the target antenna is maximized; the target antenna includes at least one of the small-aperture antennas; Acquire new signals received by each of the small-aperture antennas; Based on each of the new signals and the directional diagram of each of the small-aperture antennas, a new neighboring satellite interference-removing signal of the target satellite corresponding to each of the target antennas is obtained when each of the target antennas receives the target satellite.

3. The method for small-aperture antenna to resist neighboring satellite interference according to any one of claims 1 to 2, characterized in that: The controlling the orientation of each small-aperture antenna included in the small-aperture antenna array based on the ephemeris diagram, the geographical location information of the small-aperture antenna array and the current time information comprises: Based on the ephemeris diagram, the geographical location information and the current time information, obtaining the position of the target satellite at the current time; Based on the azimuth of the target satellite at the current time, the azimuth of each small-aperture antenna is controlled so that each small-aperture antenna is aligned with each target satellite at the current time.

4. The method for using a small-aperture antenna to resist interference from neighboring satellites according to claim 3, characterized in that: The acquiring the position of the target satellite at the current time based on the ephemeris diagram, the geographical location information and the information of the current time comprises: Based on the ephemeris diagram, the geographical location information and the current time information, obtaining the position of each satellite at the current time; The satellite whose same-frequency beam at the current time covers the small-aperture antenna array is determined as the target satellite.

5. A small-aperture antenna anti-interference device for neighboring satellites, characterized in that: include: A control module, configured to control the orientation of each small-aperture antenna included in the small-aperture antenna array based on the ephemeris diagram, the geographical location information of the small-aperture antenna array and the current time information, so that each of the small-aperture antennas is aligned with each target satellite at the current time; the small-aperture antenna array includes a plurality of the small-aperture antennas; The number of the target satellites is less than or equal to the number of the small-aperture antennas included in the small-aperture antenna array; the same-frequency beam of the target satellite at the current time covers the small-aperture antenna array; A receiving module, used to obtain the signal received by each of the small-aperture antennas at the current time; An acquisition module, configured to acquire, based on each received signal and a directional diagram of each small-aperture antenna, a neighboring satellite interference-removed signal received by each small-aperture antenna for each target satellite at the current time; The acquisition module is specifically used for: Based on the directional pattern of each of the small-aperture antennas, obtaining the gain of each of the small-aperture antennas in receiving each of the target satellites; Based on each of the received signals and the gain of each of the small-aperture antennas receiving each of the target satellites, each of the neighboring satellite interference removal signals is acquired; The obtaining of each of the neighboring satellite interference removal signals based on each of the received signals and the gain of each of the small-aperture antennas receiving each of the target satellites is obtained by solving the following equation: The small-aperture antenna array includes n small-aperture antennas, where n is a positive integer; i is the signal of m target satellites, m is a positive integer less than or equal to n; the gain of the i-th small-aperture antenna receiving the j-th satellite is denoted as {a i，j |i=1,2,...,n,j=1,2,...,m}; is a single-channel satellite signal, that is is the signal of the jth satellite; the solution of the equation That is, the signal of the target satellite corresponding to each small-aperture antenna received by the small-aperture antenna after removing the interference from the neighboring satellites.

6. A small-aperture antenna array, characterized in that: include: The small-aperture antenna anti-neighboring satellite interference device as described in claim 5, multiple small-aperture antennas, and a motor and positioning device for controlling the azimuth of each of the small-aperture antennas.

7. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the program, the steps of the method for small-aperture antenna to resist neighboring satellite interference as claimed in any one of claims 1 to 4 are implemented.

8. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method for small-aperture antenna to resist neighboring satellite interference as claimed in any one of claims 1 to 4 are implemented.

9. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method for small-aperture antenna to resist neighboring satellite interference as claimed in any one of claims 1 to 4 are implemented.

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