A method and system for quickly acquiring phase shift values ​​of a single pulse tracking receiver

Abstract

The present invention discloses a method for quickly acquiring the phase shift value of a single pulse tracking receiver. The method includes: after the measurement and control antenna is pointed at a signal source that meets far-field conditions, the measurement and control antenna is offset by a specific angle in azimuth or elevation to obtain an error voltage point after the offset; the error voltage point before the offset is connected with the error voltage point after the offset to obtain a first line segment; the first line segment is translated so that the error voltage point before the offset coincides with the origin of the coordinate system to obtain a second line segment; the angle between the second line segment and the coordinate axis is read to obtain a correction value for the phase shift value; the correction value is added to the original phase shift value to obtain a new phase shift value. By connecting and translating line segments, the deficiency of the original error display that only displays the current error voltage is overcome, and the deviation value can be directly displayed, which is simple and convenient, while also improving the phase calibration accuracy.

Description

Technical Field

[0001] The present invention relates to the field of aerospace measurement and control, and in particular to a method and system for quickly acquiring a phase shift value of a single pulse tracking receiver. Background Art

[0002] Monopulse tracking receivers are widely used in aerospace TT&C systems. When tracking spacecraft, TT&C antennas often employ a sum-and-difference amplitude-comparison monopulse tracking method. However, due to differences in the transmission channels of the sum and difference signals, the two signals experience different time delays, and therefore different phase delays. Therefore, a phase shift of the reference signal is required in the monopulse tracking receiver to ensure the correct angular error voltage is demodulated. The process of obtaining this phase shift value is called phase calibration.

[0003] Currently, there are two commonly used phase calibration methods. The first is the maximum value method. Specifically, the antenna is pointed at a signal source that meets far-field conditions (such as a beacon, radio source, or synchrotron), and the antenna is deviated by a certain angle in azimuth or elevation. A monopulse tracking receiver then shifts the phase in steps from 0 to 360 degrees, while simultaneously recording the azimuth or elevation error voltage and the phase value corresponding to the maximum azimuth or elevation error voltage to obtain the required phase shift value. The disadvantage of this phase calibration method is that it requires finding the zero point of the error voltage, making it applicable only when the signal source is essentially stationary relative to the antenna. Furthermore, the calibration process is time-consuming and inefficient.

[0004] The second method is the two-point method. Specifically, guided by theoretical angle data, the antenna is pointed toward a signal source that meets far-field conditions (such as a beacon, radio source, or synchrotron). The azimuth and elevation error voltages at the first point are recorded. The antenna is then deviated from the azimuth or elevation axis by a certain angle, and the azimuth and elevation error voltages at the second point are recorded. Finally, the required phase shift value is calculated using a theoretical formula. This method is a significant improvement over the first method, requiring no static signal source and facilitating faster phase calibration. However, it is not suitable when the theoretical angle data has large errors.

[0005] Therefore, in view of the shortcomings of the above two methods, it is urgent to propose a new method for obtaining the phase shift value of a single pulse tracking receiver. Summary of the Invention

[0006] The embodiment of the present invention provides a method and system for quickly acquiring a phase shift value of a single pulse tracking receiver, aiming to solve the problems of long phase calibration time, low efficiency and low accuracy existing in the prior art methods.

[0007] In a first aspect, an embodiment of the present invention provides a method for quickly acquiring a phase shift value of a single pulse tracking receiver, the method comprising:

[0008] After the measurement and control antenna is pointed at a signal source that meets the far-field condition, the measurement and control antenna is offset at a specific angle in azimuth or elevation to obtain an error voltage point after the offset;

[0009] Connecting the error voltage point before bias and the error voltage point after bias to obtain a first line segment;

[0010] The first line segment is translated so that the error voltage point before the bias coincides with the origin of the coordinate system to obtain a second line segment. The angle between the second line segment and the coordinate axis is read to obtain a correction amount for the phase shift value. The correction amount is added to the original phase shift value to obtain a new phase shift value.

[0011] In a second aspect, an embodiment of the present invention provides a system for rapidly acquiring a phase shift value of a single pulse tracking receiver, comprising:

[0012] A bias module is used to bias the measurement and control antenna in azimuth or elevation to a specific angle after the measurement and control antenna is pointed at a signal source that meets the far-field condition, so as to obtain an error voltage point after the bias;

[0013] a connecting module, configured to connect the error voltage point before bias and the error voltage point after bias to obtain a first line segment;

[0014] The translation calculation module is used to translate the first line segment so that the error voltage point before the bias coincides with the origin of the coordinate system, thereby obtaining a second line segment, reading the angle between the second line segment and the coordinate axis, obtaining a correction amount for the phase shift value, and adding the correction amount to the original phase shift value to obtain a new phase shift value.

[0015] In a third aspect, an embodiment of the present invention further provides a computer device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the method described in the first aspect when executing the computer program.

[0016] In a fourth aspect, an embodiment of the present invention further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the processor executes the method described in the first aspect above.

[0017] Embodiments of the present invention provide a method and system for rapidly acquiring the phase shift value of a single-pulse tracking receiver. After the tracking and control antenna is pointed toward a signal source that meets far-field conditions, the antenna is offset in azimuth or elevation by a specific angle to obtain an offset error voltage point. The error voltage point before and after the offset are connected to obtain a first line segment. The first line segment is translated so that the error voltage point before and after the offset coincides with the origin of the coordinate system to obtain a second line segment. The angle between the second line segment and the coordinate axis is read to obtain a correction to the phase shift value, which is then added to the original phase shift value to obtain a new phase shift value.

[0018] The beneficial effects of this application are as follows:

[0019] 1. By connecting and translating line segments, the original error display overcomes the deficiency of only displaying the current error voltage, thus improving the phase calibration accuracy.

[0020] 2. The orthogonal coordinate system commonly used to display the error voltage is changed to a polar coordinate system. The correction value of the phase shift value of the single pulse tracking receiver is directly read through the polar coordinate system. This is simple, convenient, and not prone to errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 A schematic flow chart of a method for rapidly acquiring a phase shift value of a single pulse tracking receiver provided by an embodiment of the present invention;

[0023] Figure 2 A schematic diagram of an error voltage line segment provided by an embodiment of the present invention;

[0024] Figure 3 A schematic diagram of a shifted error voltage line segment provided by an embodiment of the present invention;

[0025] Figure 4 A schematic block diagram of a system for rapidly acquiring phase shift values ​​of a single pulse tracking receiver provided by an embodiment of the present invention;

[0026] Figure 5 A schematic block diagram of a computer device provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0028] It will be understood that when used in this specification and the appended claims, the terms “comprises” and “comprising” indicate the presence of described features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof.

[0029] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the present invention. As used in the specification and appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms unless the context clearly indicates otherwise.

[0030] It should be further understood that the term "and / or" used in the present description and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0031] In related technologies, after the measurement and control antenna is pointed at a signal source that meets the far-field conditions, the antenna is offset by a specific angle in the azimuth or elevation direction. If the phase shift value of the single-pulse tracking receiver has no deviation, the line connecting the error voltage point before the offset and the error voltage point after the offset is horizontal or vertical; if the phase shift value of the single-pulse tracking receiver has a deviation, the line connecting the error voltage point before the offset and the error voltage point after the offset will produce an angle with the horizontal line or the vertical line, and the absolute value of this angle is the absolute value of the phase shift value deviation.

[0032] Based on the above findings, this embodiment provides a method for quickly acquiring the phase shift value of a single pulse tracking receiver. Figure 1 A flow chart of a method for rapidly acquiring a phase shift value of a single pulse tracking receiver provided by an embodiment of the present invention is shown in FIG. Figure 1 As shown, the method includes steps S110 to S130.

[0033] S110 , after the measurement and control antenna is pointed at a signal source that meets the far-field condition, the measurement and control antenna is offset by a specific angle in azimuth or elevation to obtain an error voltage point after the offset.

[0034] In this embodiment, after the measurement and control antenna is pointed at a signal source that meets the far-field condition, the measurement and control antenna is offset by a specific angle in azimuth or elevation to obtain an error voltage point after the offset.

[0035] Specifically, Figure 2 The error voltage line segment diagram provided by the embodiment of the present invention is as follows: Figure 2 As shown in the figure, assuming that the measurement and control antenna points to the signal source that meets the far-field condition, the error voltage point A before bias is obtained, and the azimuth error voltage of point A is recorded as V AA , the pitch error voltage is recorded as V AE and the error voltage at point A (V AA , V AE) is stored in the computer memory and displayed before the end of the process; then the measurement and control antenna is offset by a specific angle in azimuth or elevation to obtain the error voltage point B after the offset. The azimuth error voltage of point B is recorded as V BA , the pitch error voltage is recorded as V BE and the error voltage at point B (V BA , V BE ) is stored in the computer memory and displayed before the process ends.

[0036] Preferably, the setting of the specific offset angle is related to the antenna beam width and the antenna pointing accuracy. In this embodiment, the offset angle of the measurement and control antenna is set to be greater than or equal to ten times the antenna pointing accuracy and less than or equal to one-sixth of the antenna beam width.

[0037] S120 , connecting the error voltage point before the bias and the error voltage point after the bias to obtain a first line segment.

[0038] In this embodiment, the error voltage point A before bias and the error voltage point B after bias are connected to obtain a first line segment AB. Specifically, M points are inserted between the error voltage point A before bias and the error voltage point B after bias, and the first line segment AB is obtained through the M points, wherein the azimuth voltage V nA and pitch voltage V nE The calculation of is shown in the following equations (1) and (2):

[0039]

[0040]

[0041] Among them, n represents the nth point, and its value range is 1 to M; V AA is the azimuth error voltage of the error voltage point before bias, V AE is the pitch error voltage at the error voltage point before bias, V BA is the azimuth error voltage of the error voltage point after bias, V BE is the pitch error voltage at the error voltage point after bias.

[0042] S130, translating the first line segment so that the error voltage point before the bias coincides with the origin of the coordinate system to obtain a second line segment, reading the angle between the second line segment and the coordinate axis to obtain a correction amount for the phase shift value, and adding the correction amount to the original phase shift value to obtain a new phase shift value.

[0043] The first line segment AB is translated so that the error voltage point before the bias coincides with the origin of the coordinate system to obtain the second line segment. Specifically, according to the azimuth error voltage V of the error voltage point before the bias, AA and the pitch error voltage V AE, perform data processing on each point of the first line segment, that is, subtract the azimuth voltage of each point from V AA , reduce the pitch voltage at each point by V AE , thus calculating the new points, and drawing each new point to get the second line segment A'B', Figure 3 A schematic diagram of the error voltage line segment after translation provided by an embodiment of the present invention is shown in FIG. Figure 3 shown.

[0044] After translating to obtain the second line segment A'B', read the angle between the second line segment A'B' and the coordinate axis. This angle is the correction value of the phase shift value, such as Figure 3 As shown, the correction amount is added to the original phase shift value to obtain a new phase shift value. Preferably, when the angle is clockwise, the correction amount is a positive value, and when the angle is counterclockwise, the correction amount is a negative value.

[0045] Preferably, the coordinate system used in this embodiment is a polar coordinate system.

[0046] In the method for rapidly acquiring the phase shift value of a single-pulse tracking receiver provided in an embodiment of the present invention, after the measurement and control antenna is pointed at a signal source that meets far-field conditions, the measurement and control antenna is offset by a specific angle in azimuth or elevation to obtain an error voltage point after the offset; the error voltage point before the offset is connected to the error voltage point after the offset to obtain a first line segment; the first line segment is translated so that the error voltage point before the offset coincides with the origin of the coordinate system to obtain a second line segment; the angle between the second line segment and the coordinate axis is read to obtain a correction for the phase shift value, and the correction value is added to the original phase shift value to obtain a new phase shift value. In this method, by connecting and translating line segments, the deficiency of the original error display that only displays the current error voltage is overcome, and the deviation value can be directly displayed, which is simple and convenient, while also improving phase calibration accuracy.

[0047] The embodiment of the present invention also provides a system for quickly acquiring the phase shift value of a single pulse tracking receiver. Figure 4 A schematic block diagram of a system for rapidly acquiring phase shift values ​​of a single pulse tracking receiver provided by an embodiment of the present invention is shown in FIG. Figure 4 As shown, the system includes a bias module 410, a connection module 420 and a translation calculation module 430:

[0048] The bias module 410 is used to bias the measurement and control antenna in azimuth or elevation to a specific angle after the measurement and control antenna is pointed at the signal source that meets the far-field condition, and obtain the error voltage point after the bias;

[0049] A connection module 420 is used to connect the error voltage point before bias and the error voltage point after bias to obtain a first line segment;

[0050] The translation calculation module 430 is used to translate the first line segment so that the error voltage point before the bias coincides with the origin of the coordinate system, thereby obtaining a second line segment, reading the angle between the second line segment and the coordinate axis, obtaining a correction amount for the phase shift value, and adding the correction amount to the original phase shift value to obtain a new phase shift value.

[0051] Through the above system, after the measurement and control antenna is pointed at a signal source that meets the far-field conditions, this embodiment offsets the measurement and control antenna in azimuth or elevation by a specific angle to obtain an error voltage point after the offset; the error voltage point before the offset is connected with the error voltage point after the offset to obtain a first line segment; the first line segment is translated so that the error voltage point before the offset coincides with the origin of the coordinate system to obtain a second line segment, the angle between the second line segment and the coordinate axis is read to obtain a correction amount for the phase shift value, and the correction amount is added to the original phase shift value to obtain a new phase shift value. This overcomes the deficiency of the original error display that only the current error voltage is displayed, and can directly display the deviation amount, which is simple and convenient, and also improves the phase calibration accuracy.

[0052] The above method for quickly acquiring the phase shift value of a single pulse tracking receiver can be implemented in the form of a computer program. The computer program can be used in the following example. Figure 5 Runs on the computer device shown.

[0053] See also Figure 5 , Figure 5 The computer device provided in the embodiment of the present invention is a schematic block diagram of a computer device. The computer device can be used to execute a method for rapidly acquiring a phase shift value of a single pulse tracking receiver.

[0054] See Figure 5 The computer device 500 includes a processor 502 , a memory, and a network interface 505 connected via a system bus 501 , wherein the memory may include a storage medium 503 and an internal memory 504 .

[0055] The storage medium 503 can store an operating system 5031 and a computer program 5032. When the computer program 5032 is executed, the processor 502 can execute a method for rapidly acquiring a phase shift value of a single pulse tracking receiver. The storage medium 503 can be a volatile storage medium or a non-volatile storage medium.

[0056] The processor 502 is used to provide computing and control capabilities to support the operation of the entire computer device 500.

[0057] The internal memory 504 provides an environment for the operation of the computer program 5032 in the storage medium 503. When the computer program 5032 is executed by the processor 502, the processor 502 can execute a method for rapidly acquiring a phase shift value of a single pulse tracking receiver.

[0058] The network interface 505 is used for network communication, such as providing data information transmission. Those skilled in the art will understand that Figure 5 The structure shown in the figure is merely a block diagram of a portion of the structure related to the solution of the present invention and does not constitute a limitation on the computer device 500 to which the solution of the present invention is applied. The specific computer device 500 may include more or fewer components than shown in the figure, or combine certain components, or have a different component arrangement.

[0059] The processor 502 is configured to run a computer program 5032 stored in the memory to implement corresponding functions in the method for rapidly acquiring a phase shift value of a single pulse tracking receiver.

[0060] Those skilled in the art will understand that Figure 5 The embodiment of the computer device shown in the figure does not constitute a limitation on the specific composition of the computer device. In other embodiments, the computer device may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently. For example, in some embodiments, the computer device may only include a memory and a processor. In such an embodiment, the structure and function of the memory and processor are the same as those in the figure. Figure 5 The embodiments shown are consistent and will not be described again here.

[0061] It should be understood that in the embodiment of the present invention, the processor 502 may be a central processing unit (CPU), and the processor 502 may also be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor, etc.

[0062] In another embodiment of the present invention, a computer-readable storage medium is provided. The computer-readable storage medium may be volatile or non-volatile. The computer-readable storage medium stores a computer program that, when executed by a processor, implements the steps included in the aforementioned method for rapidly acquiring a phase shift value of a monopulse tracking receiver.

[0063] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the above-described equipment, devices and units can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented with electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described in terms of function in the above description. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0064] In the several embodiments provided by the present invention, it should be understood that the disclosed devices, apparatuses and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, or units with the same function may be combined into one unit. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interfaces, devices or units, or may be an electrical, mechanical or other form of connection.

[0065] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected according to actual needs to achieve the objectives of the embodiments of the present invention.

[0066] In addition, the functional units in the various embodiments of the present invention may be integrated into a single processing unit, each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0067] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a computer-readable storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present invention. The aforementioned computer-readable storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a magnetic disk, or an optical disk.

[0068] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. A method for rapidly acquiring a phase shift value of a single pulse tracking receiver, characterized in that: The method comprises: After the measurement and control antenna is pointed at a signal source that meets the far-field condition, the measurement and control antenna is offset at a specific angle in azimuth or elevation to obtain an error voltage point after the offset; Connecting the error voltage point before bias and the error voltage point after bias to obtain a first line segment; The first line segment is translated so that the error voltage point before the bias coincides with the origin of the coordinate system to obtain a second line segment. The angle between the second line segment and the coordinate axis is read to obtain a correction amount for the phase shift value. The correction amount is added to the original phase shift value to obtain a new phase shift value.

2. The method according to claim 1, characterized in that The step of connecting the error voltage point before bias and the error voltage point after bias to obtain a first line segment includes: Insert M points between the error voltage point before bias and the error voltage point after bias, and obtain the first line segment through the M points, wherein the azimuth voltage V of each point is nA and pitch voltage V nE The calculation of is as follows: Among them, n represents the nth point, and its value range is 1 to M; V AA is the azimuth error voltage of the error voltage point before bias, V AE is the pitch error voltage at the error voltage point before bias, V BA is the azimuth error voltage of the error voltage point after bias, V BE is the pitch error voltage at the error voltage point after bias.

3. The method according to claim 1, characterized in that The translating the first line segment includes: According to the azimuth error voltage and the pitch error voltage of the error voltage point before the bias, data processing is performed on each point of the first line segment to calculate and obtain a new point, and the second line segment is obtained through the new point.

4. The method according to claim 1, wherein Reading the angle between the second line segment and the coordinate axis to obtain a correction amount for the phase shift value includes: When the included angle is clockwise, the correction amount is a positive value, and when the included angle is counterclockwise, the correction amount is a negative value.

5. The method according to claim 1, wherein The coordinate system is a polar coordinate system.

6. The method according to claim 1, characterized in that The setting of the specific angle includes: The offset angle of the measurement and control antenna is set to be greater than or equal to ten times the antenna pointing accuracy and less than or equal to one-sixth of the antenna beam width.

7. A system for rapidly acquiring phase shift values ​​of a single pulse tracking receiver, characterized in that: The system comprises: A bias module is used to bias the measurement and control antenna in azimuth or elevation to a specific angle after the measurement and control antenna is pointed at a signal source that meets the far-field condition, so as to obtain an error voltage point after the bias; a connecting module, configured to connect the error voltage point before bias and the error voltage point after bias to obtain a first line segment; The translation calculation module is used to translate the first line segment so that the error voltage point before the bias coincides with the origin of the coordinate system, thereby obtaining a second line segment, reading the angle between the second line segment and the coordinate axis, obtaining a correction amount for the phase shift value, and adding the correction amount to the original phase shift value to obtain a new phase shift value.

8. The system according to claim 7, characterized in that The connection module is further used to insert M points between the error voltage point before bias and the error voltage point after bias, and obtain the first line segment through the M points, wherein the azimuth voltage V nA and pitch voltage V nE The calculation of is as follows: Among them, n represents the nth point, and its value range is 1 to M; V AA is the azimuth error voltage of the error voltage point before bias, V AE is the pitch error voltage at the error voltage point before bias, V BA is the azimuth error voltage of the error voltage point after bias, V BE is the pitch error voltage at the error voltage point after bias.

9. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the computer program, the method according to any one of claims 1 to 6 is implemented.

10. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method according to any one of claims 1 to 6 is implemented.

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