Control method for introducing amplitude-phase distortion by anti-interference weighting of high-precision anti-interference navigation
By employing adaptive zeroing and multi-beam anti-interference processing, the total amplitude and phase distortion of satellite signals is calculated and compensated, solving the problem that existing technologies cannot completely eliminate amplitude and phase distortion and sacrifice degrees of freedom, thus achieving effective compensation for high-precision anti-interference navigation.
Patent Information
- Application Number
- CN202511476347.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-16
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2045-10-16
AI Technical Summary
Existing anti-interference weighting methods cannot completely eliminate the amplitude and phase distortion of satellite signals in high-precision anti-interference navigation, and sacrifice the anti-interference degree of freedom of the array antenna when suppressing interference.
Adaptive zeroing anti-interference and multi-beam anti-interference processing are adopted to calculate the introduced total amplitude and phase distortion and compensate for it before acquiring and tracking satellite signals. An anti-interference weighted amplitude and phase distortion control unit is added to meet the requirements of high-precision anti-interference navigation.
It completely eliminates the amplitude and phase distortion introduced by anti-interference weighting, meets the requirements of adaptive zeroing and multi-beam anti-interference application scenarios, and does not sacrifice the anti-interference degree of freedom of the array antenna.
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Figure CN120949264A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of high-precision satellite navigation technology, specifically to a method for controlling amplitude and phase distortion introduced by anti-interference weighting in high-precision anti-interference navigation. Background Technology
[0002] The key features of high-precision anti-jamming satellite navigation applications, such as precision approach and landing of aircraft, carrier-based aircraft landing, formation flight and automatic aerial refueling of aircraft, and rapid orientation finding and autonomous north-seeking of missile launchers / aircraft, are complex interference environments and very high positioning and orientation requirements.
[0003] The complexity of the interference environment is mainly manifested in the variety and variability of interference types. From the perspective of interference mechanism, interference types can be categorized into suppression interference, deception interference, and a combination of suppression and deception interference. Deception interference is further subdivided into regenerative and repeater types. Interference variations mainly include rapid or slow changes in the number, direction of attack, modulation, frequency, and intensity of interference over time. Positioning and orientation requirements include providing real-time or near-real-time positioning services at the decimeter / centimeter level and orientation services better than 1 degree / 0.5 degree.
[0004] High-precision positioning and orientation in complex interference environments requires solving three strongly coupled challenges: complex interference detection and real-time suppression, satellite signal distortion tracing and control, and high-precision positioning and orientation under low distortion.
[0005] Through theoretical derivation, simulation analysis, and experimental verification, the above three problems are decoupled and decomposed into three categories, seven subcategories, and 10 sequential topics as shown in the table below.
[0006] Based on this, 10 high-precision anti-interference navigation invention patents corresponding to the above-mentioned topics were planned and developed.
[0007] Table 1. Overview of Decoupling and Decomposition of High-Precision Positioning and Orientation Challenges in Complex Interference Environments
[0008] This invention analyzes the control method for amplitude and phase distortion introduced by anti-interference weighting, which is the second category, the fifth subcategory, and the eighth invention listed in the table above.
[0009] High-precision anti-interference navigation must leverage the beneficial effects of combined spatial, temporal, and frequency domain filtering by array antennas—suppressing strong interference and enhancing weak interference, i.e., suppressing strong interference in the combined signal composed of satellite signals, noise, and interference, and enhancing weak satellite signals in the combined signal; while also controlling its harmful effects—amplitude distortion and phase distortion (hereinafter referred to as amplitude and phase distortion), i.e., the amplitude and phase distortion of satellite signals caused by non-ideal amplitude and phase of the receiving channel and amplitude and phase weighting in anti-interference processing.
[0010] Distortion introduced by non-ideal amplitude and phase of the receiving channel can be measured offline and controlled online, as detailed in the second category, fourth subcategory, and sixth invention—a method for controlling amplitude and phase distortion introduced by the receiving channel. Distortion introduced by amplitude and phase weighting in anti-interference processing must be calculated and controlled online, as detailed in this invention.
[0011] The amplitude and phase weighting of anti-interference processing can be further subdivided into adaptive nulling anti-interference processing and multi-beam anti-interference processing. The combined signal, composed of navigation signals broadcast by all visible satellites, interference emitted by interference sources, and noise, is processed through a receiving channel composed of array elements and radio frequency channels to form a combined signal vector. Adaptive nulling anti-interference processing uses an optimal anti-interference weight vector to perform amplitude and phase weighting on the combined signal vector and sums the results, obtaining a combined satellite signal with effectively suppressed interference. Because the anti-interference weight vector used for amplitude and phase weighting is the same, the amplitude and phase distortion introduced to each satellite signal is the same. Multi-beam anti-interference processing uses L optimal anti-interference weight vectors (each facing a specific visible satellite) to perform amplitude and phase weighting on the combined signal vector and sum the results, obtaining a high-quality purified (high signal-to-noise ratio reception, effectively suppressed interference) signal from a specific visible satellite. Because the anti-interference weight vectors used for amplitude and phase weighting are different, the amplitude and phase distortion introduced to each satellite signal is different.
[0012] Existing methods for controlling amplitude and phase distortion introduced by anti-interference weighting mainly fall into two categories. One is the anti-interference weight vector optimization method, which selects an appropriate optimal criterion to reduce the amplitude and phase distortion introduced by anti-interference processing, but cannot completely eliminate it. The other is the anti-interference weight vector realization method, which avoids phase weighting in anti-interference processing by constraining the elements of the anti-interference weight vector to real numbers, thereby cutting off this phase distortion path. The cost is that the anti-interference (spatial domain) degrees of freedom are sacrificed by half. That is, Array antennas could originally counter Interference from different directions, after adding constraints, can only be countered. Interference from different directions.
[0013] The two existing anti-interference weighted control methods for amplitude and phase distortion cannot meet the requirements for amplitude and phase distortion control of satellite signals in high-precision anti-interference navigation.
[0014] Based on this technical background, this invention studies a control method for amplitude and phase distortion introduced by anti-interference weighting in high-precision anti-interference navigation. Summary of the Invention
[0015] To address the shortcomings of existing technologies, this invention provides a control method for amplitude and phase distortion introduced by anti-interference weighting in high-precision anti-interference navigation. It calculates the total amplitude and phase distortion introduced by adaptive zeroing anti-interference and multi-beam anti-interference processing, respectively, to address the differences in amplitude and phase distortion caused by these methods. This yields the total amplitude and phase compensation required before acquiring and tracking a satellite signal, thus meeting the application requirements of adaptive zeroing anti-interference and multi-beam anti-interference.
[0016] To achieve the above objectives, the present invention provides a method for controlling amplitude and phase distortion introduced by interference weighting in high-precision anti-interference navigation, comprising: To address the amplitude and phase distortion caused by adaptive zeroing interference suppression, the total amplitude and phase distortion introduced by the adaptive zeroing interference suppression weighting to a certain satellite signal in the field of view is first calculated. Then, this total amplitude and phase distortion is compensated in the combined satellite signal after interference suppression processing. Finally, the satellite signal is acquired and tracked until the number of acquired and tracked satellite signals reaches a preset value. Or all visible satellites in the field of vision; To address the amplitude and phase distortion caused by multi-beam anti-jamming processing, the total amplitude and phase distortion introduced by the multi-beam anti-jamming weighting to the purified satellite signal is first calculated. This total amplitude and phase distortion is then compensated in the purified satellite signal after anti-jamming processing. Finally, the purified satellite signal is acquired and tracked until the number of acquired and tracked satellite signals reaches a certain threshold. .
[0017] The beneficial effects of this invention include: (1) The high-precision anti-interference navigation anti-interference weighted control method for amplitude and phase distortion is proposed in this invention. It calculates the total amplitude and phase distortion introduced by the adaptive zeroing anti-interference and multi-beam anti-interference processing respectively, based on the difference in amplitude and phase distortion caused by adaptive zeroing anti-interference and multi-beam anti-interference weighting, and obtains the total amplitude and phase compensation that must be performed before capturing and tracking a satellite signal; it meets the application scenario requirements of adaptive zeroing anti-interference and multi-beam anti-interference.
[0018] (2) The high-precision anti-interference navigation method proposed in this invention for controlling amplitude and phase distortion introduced by anti-interference weighting adopts the idea of turning zeros into wholes and compensating for losses. On the basis of conventional anti-interference navigation processing based on array antenna, an anti-interference weighted amplitude and phase distortion control unit is added. The total amplitude and phase distortion introduced after anti-interference weighting is calculated first, and then the total amplitude and phase distortion is compensated before acquisition and tracking. The amplitude and phase distortion introduced by anti-interference weighting can be completely eliminated without sacrificing the anti-interference degree of freedom of the array antenna.
[0019] Other features and advantages of the present invention will be described in detail in the following detailed description section. Attached Figure Description
[0020] The above and other objects, features and advantages of the present invention will become more apparent from the more detailed description of exemplary embodiments of the invention in conjunction with the accompanying drawings.
[0021] Figure 1 This is a flowchart illustrating the anti-interference weighted amplitude and phase distortion control method for high-precision anti-interference navigation proposed in this invention.
[0022] Figure 2 This is a schematic diagram of the overall framework for controlling amplitude and phase distortion introduced by anti-interference weighting in a specific embodiment of the high-precision anti-interference navigation method proposed in this invention. Detailed Implementation
[0023] Preferred embodiments of the invention will now be described in more detail. While preferred embodiments of the invention are described below, it should be understood that the invention can be implemented in various forms and should not be limited to the embodiments set forth herein.
[0024] This invention provides a control method for anti-interference weighted amplitude and phase distortion introduced by high-precision anti-interference navigation, such as... Figure 1 As shown, it includes: To address the amplitude and phase distortion caused by adaptive zeroing interference suppression, the total amplitude and phase distortion introduced by the adaptive zeroing interference suppression weighted signal to a specific satellite signal within the field of view is first calculated. This total amplitude and phase distortion is then compensated in the combined satellite signal after interference suppression processing. Finally, the satellite signal is acquired and tracked until the number of acquired and tracked satellite signals reaches a preset value. Or all visible satellites in the field of vision; To address the amplitude and phase distortion caused by multi-beam anti-jamming processing, the total amplitude and phase distortion introduced by multi-beam anti-jamming weighting to the purified satellite signal is first calculated. This total amplitude and phase distortion is then compensated for in the purified satellite signal after anti-jamming processing. Finally, the purified satellite signal is acquired and tracked until the number of acquired and tracked satellite signals reaches a certain threshold. .
[0025] In this invention, the difference in amplitude and phase distortion caused by adaptive zeroing anti-interference and multi-beam anti-interference processing is addressed by calculating the total amplitude and phase distortion introduced by the weighted processing of adaptive zeroing anti-interference and multi-beam anti-interference, respectively, to obtain the total amplitude and phase compensation required before acquiring and tracking a satellite signal; thus meeting the application requirements of adaptive zeroing anti-interference and multi-beam anti-interference.
[0026] In this invention, based on conventional anti-interference navigation processing using array antennas, an anti-interference weighted amplitude and phase distortion control unit is added. The overall framework is as follows: Figure 2 As shown; in Figure 2Solid lines indicate conventional anti-interference navigation processing units based on array antennas; dashed lines mark measurement, storage, and correction units related to the amplitude and phase errors of each array element; short-dot-dot lines indicate measurement, storage, and correction units related to the amplitude and phase errors of each channel; dotted lines indicate storage and correction units related to anti-interference weighting. For details on measurement, storage, and correction related to the amplitude and phase errors of each array element and each channel, please refer to the sixth invention in the high-precision anti-interference navigation series—the control method for amplitude and phase distortion introduced by the receiving channel, which will not be elaborated here.
[0027] According to the present invention, the preset value It ranges from 4 to 8; The value is 12.
[0028] According to the present invention, calculating the total amplitude and phase distortion introduced by adaptive zeroing anti-interference weighting to a certain satellite signal in the field of view includes: The combined signal is processed by the receiving channel to form a combined signal vector; By using the adaptive zeroing anti-interference weight vector to perform amplitude and phase weighting on the composite signal vector and summing them, a composite satellite signal with effective interference suppression is obtained. The total amplitude and phase distortion introduced by a satellite signal within the field of view; Combined signals include navigation signals, interference, and noise; The receiving channel consists of an array antenna and a radio frequency channel.
[0029] According to the present invention, the expression for the combined signal is: ; in, For a combined signal, For the first One satellite signal, For the first An interference, For noise, The number of satellites visible in the field of view. The number of interferences; The expression for the combined signal vector is: ; in, For the combined signal vector, For the first One element; No. The expression for each element is: ; in, For the first The satellite signal at the The phase difference of each array element relative to the first array element For the first The interference at the first The phase difference of each array element relative to the first array element , The transpose symbol for a vector or matrix; The first array element is the reference array element.
[0030] According to the present invention, the matrix expression of the combined signal vector is: ; in, The satellite signal steering vector matrix, For the first The direction of arrival of each satellite signal relative to the array antenna. For the first The steering vector formed by the satellite signals on the array antenna For satellite signal vectors, For the interference steering vector matrix, For the first The interference is relative to the direction of the incoming wave from the array antenna. For the first The steering vector formed by the interference on the array antenna. For interference vectors, This is the noise vector; The expression for the adaptive zeroing anti-interference weight vector is: ; in, For the weight vector The amplitude of each element, For the weight vector The phase of each element, .
[0031] According to the present invention, the formula used to perform amplitude and phase weighting and summation of the combined signal vector using the adaptive zero-adjustment anti-interference weight vector is as follows: ; in, It is the conjugate transpose of a vector or matrix. It is the conjugate symbol for a vector or matrix. For the combined signal vector, This is the adaptive zeroing anti-interference weight vector.
[0032] According to the present invention, the total amplitude and phase distortion introduced into a satellite signal within the field of view is: ; For the The total amplitude and phase distortion introduced by each satellite signal is: ; For the The expressions for the total amplitude distortion and total phase distortion introduced by each satellite signal are as follows: ; ; According to the present invention, the expression for compensating for the total amplitude phase distortion in the combined satellite signal after anti-interference processing is as follows: ; For the The expression for amplitude and phase compensation of a satellite signal is: = .
[0033] in, For the first Amplitude compensation for individual satellite signals, For the first Phase compensation for individual satellite signals.
[0034] According to the present invention, calculating the total amplitude and phase distortion introduced by multi-beam anti-jamming weighting to the purified satellite signal includes: The combined signal is processed by the receiving channel to form a combined signal vector; Towards the Multi-beam anti-jamming weight vector for a visible satellite The combined signal vector is weighted by amplitude and phase and then summed to obtain the purified first... One satellite signal; For the Total amplitude and phase distortion introduced by each satellite signal; The purification process includes high signal-to-noise ratio reception and effective suppression of interference.
[0035] According to the present invention, oriented towards the first Multi-beam anti-jamming weight vector for a visible satellite The expression for summing the magnitude and phase weights of the combined signal vector is: ; in, , No. Multi-beam anti-jamming weight vector , For the weight vector The amplitude of each element, For the weight vector The phase of each element, L=12; For the The expression for the total amplitude and phase distortion introduced by a single satellite signal is: ; remember The above expression can be rearranged as follows: ; For the The expressions for the total amplitude distortion and total phase distortion introduced by each satellite signal are as follows: ; .
[0036] According to the present invention, compensating for the total amplitude and phase distortion in the purified satellite signal after anti-interference processing includes: Weighting of multi-beam anti-interference in the first stage Amplitude and phase compensation is performed on the total amplitude and phase distortion introduced by each satellite signal. The expression for amplitude and phase compensation is as follows: = ; in, For amplitude compensation, For phase compensation.
[0037] In this invention, an anti-interference weighted amplitude and phase distortion control unit is added to the conventional anti-interference navigation processing based on array antennas. The total amplitude and phase distortion introduced after anti-interference weighting is calculated first, and then the total amplitude and phase distortion is compensated before acquisition and tracking. This can completely eliminate the amplitude and phase distortion introduced by anti-interference weighting without sacrificing the anti-interference degree of freedom of the array antenna.
[0038] The present invention will be described in more detail below through embodiments.
[0039] Example 1: like Figure 1 As shown, this embodiment proposes a control method for anti-interference weighted amplitude and phase distortion introduced into high-precision anti-interference navigation. This method, based on conventional anti-interference navigation processing using array antennas, adds an anti-interference weighted amplitude and phase distortion control unit, such as... Figure 2 As shown; in Figure 2In the diagram, solid boxes identify conventional anti-interference navigation processing units based on array antennas; dashed boxes mark measurement, storage, and correction units related to the amplitude and phase errors of each array element; short-dot-dot boxes indicate measurement, storage, and correction units related to the amplitude and phase errors of each channel; and dotted boxes indicate storage and correction units related to anti-interference weighting. For details on the measurement, storage, and correction of amplitude and phase errors related to each array element and channel, please refer to the sixth invention in the high-precision anti-interference navigation series—a method for controlling amplitude and phase distortion introduced by the receiving channel; these details will not be elaborated upon here. The control method proposed in this embodiment includes: 1. Adaptive zero-adjustment anti-interference weighted amplitude and phase distortion control: First, the total amplitude and phase distortion introduced by the adaptive zeroing anti-interference weighting to a certain satellite signal in the field of view is calculated. Then, this total amplitude and phase distortion is compensated in the combined satellite signal after anti-interference processing. Next, the satellite signal is acquired and tracked until the number of acquired and tracked satellite signals reaches a preset value. (For example, 4~8) or all visible satellites in the field of view. The calculation and compensation of total amplitude and phase distortion introduced by the adaptive zeroing anti-interference weighting of a satellite signal in the field of view is as follows; 1) Calculate the total amplitude and phase distortion introduced into a satellite signal within the field of view: combined signal (Including navigation signals, interference, and noise) are combined into a single signal vector after passing through the receiving channel (composed of an array antenna and a radio frequency channel). Adaptive zeroing anti-interference weight vector The combined signal vector is weighted by amplitude and phase and then summed to obtain a combined satellite signal with effectively suppressed interference. Here, the combined signal , For the first One satellite signal, For the first An interference, For noise, The number of satellites visible in the field of view. The number of interferences; Combined signal vector The components are represented as , its first The elements are In the formula For the first The satellite signal at the The phase difference of each array element relative to the first array element (reference array element). For the first The interference at the first The phase difference of each array element relative to the first array element , The transpose symbol for a vector or matrix; The matrix representation is as follows , The satellite signal steering vector matrix, For the first The direction of arrival of each satellite signal relative to the array antenna. For the first The steering vector formed by the satellite signals on the array antenna; For satellite signal vectors; For the interference steering vector matrix, For the first The interference is relative to the direction of the incoming wave from the array antenna. For the first The steering vector formed on the array antenna by an interference; This is the interference vector; This is the noise vector; Adaptive zeroing anti-interference weight vector , For the weight vector The amplitude of each element, For the weight vector The phase of each element, ; The adaptive zero-adjustment anti-interference weight vector is used to perform a weighted summation of the combined signal vector, as expressed below: ; In the formula It is the conjugate transpose of a vector or matrix. It is the conjugate symbol for a vector or matrix; Then regarding the horizon The total amplitude and phase distortion introduced by each satellite signal is: ; Furthermore, regarding the first The total amplitude and phase distortion introduced by each satellite signal is: ; So, for the first The total amplitude distortion and total phase distortion introduced by each satellite signal are as follows: ; ; 2) Compensation for total amplitude and phase distortion introduced by a satellite signal within the field of view: Amplitude and phase compensation is performed on the total amplitude and phase distortion introduced by the adaptive zeroing anti-interference weighting of the satellite signal. Among them, for the first Amplitude compensation for individual satellite signals Phase compensation They are as follows: = ; 2. Multi-beam anti-interference weighted amplitude and phase distortion control: First, the total amplitude and phase distortion introduced by the multi-beam anti-jamming weighting to the purified satellite signal is calculated. Then, this total amplitude and phase distortion is compensated in the purified satellite signal after anti-jamming processing. Finally, the purified satellite signal is acquired and tracked until the line of sight is captured and tracked. (Typically 12) purified satellite signals are used; the calculation and compensation of total amplitude and phase distortion introduced by the purified satellite signals using multi-beam anti-interference weighting is carried out as follows: 1) Calculate the total amplitude and phase distortion introduced into the purified satellite signal: combined signal The combined signal vector is formed after passing through the receiving channel. , facing the Multi-beam anti-jamming weight vector for a visible satellite By performing amplitude and phase weighting and summing on the combined signal vector, we obtain the purified (high signal-to-noise ratio reception, interference effectively suppressed) first-order signal. One satellite signal; here, ; No. Multi-beam anti-jamming weight vector , For the weight vector The amplitude of each element, For the weight vector The phase of each element, ; No. The multi-beam anti-interference weight vectors are weighted and summed against the combined signal vectors, as shown in the following expression: ; Then for the first The total amplitude and phase distortion introduced by each satellite signal is: ; For the sake of consistency in expressions, let's call them... The above expression can be rearranged as follows: ; So, for the first The total amplitude distortion and total phase distortion introduced by each satellite signal are as follows: ; ; 2) Compensation for total amplitude and phase distortion introduced into the purified satellite signal: Weighting of multi-beam anti-interference in the first stage Amplitude and phase compensation is performed on the total amplitude and phase distortion introduced by each satellite signal. Among them, amplitude compensation Phase compensation They are as follows: = .
[0040] The embodiments of the present invention propose a high-precision anti-interference navigation method for controlling amplitude and phase distortion introduced by anti-interference weighting. This method addresses the differences in amplitude and phase distortion caused by adaptive zeroing anti-interference and multi-beam anti-interference processing, calculates the total amplitude and phase distortion introduced by adaptive zeroing anti-interference and multi-beam anti-interference weighting respectively, and obtains the total amplitude and phase compensation that must be performed before acquiring and tracking a satellite signal; thus meeting the application requirements of adaptive zeroing anti-interference and multi-beam anti-interference.
[0041] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.
Claims
1. A high-precision anti-interference navigation method for controlling amplitude and phase distortion introduced by anti-interference weighting, characterized in that, include: To address the amplitude and phase distortion caused by adaptive zeroing interference suppression, the total amplitude and phase distortion introduced by the adaptive zeroing interference suppression weighting to a certain satellite signal in the field of view is first calculated. Then, this total amplitude and phase distortion is compensated in the combined satellite signal after interference suppression processing. Finally, the satellite signal is acquired and tracked until the number of acquired and tracked satellite signals reaches a preset value. Or all visible satellites in the field of vision; To address the amplitude and phase distortion caused by multi-beam anti-jamming processing, the total amplitude and phase distortion introduced by the multi-beam anti-jamming weighting to the purified satellite signal is first calculated. This total amplitude and phase distortion is then compensated in the purified satellite signal after anti-jamming processing. Finally, the purified satellite signal is acquired and tracked until the number of acquired and tracked satellite signals reaches a certain threshold. .
2. The control method according to claim 1, characterized in that, The preset value It ranges from 4 to 8; The The value is 12.
3. The control method according to claim 2, characterized in that, The calculation of the total amplitude and phase distortion introduced by the adaptive zeroing anti-interference weighting to a certain satellite signal in the field of view includes: The combined signal is processed by the receiving channel to form a combined signal vector; The combined signal vector is weighted by amplitude and phase using an adaptive zero-adjustment anti-interference weight vector and then summed to obtain a combined satellite signal with effectively suppressed interference. The total amplitude and phase distortion introduced by a satellite signal within the field of view; The combined signal includes navigation signals, interference, and noise; The receiving channel consists of an array antenna and a radio frequency channel.
4. The control method according to claim 3, characterized in that, The expression for the combined signal is: ; in, For a combined signal, For the first One satellite signal, For the first An interference, For noise, The number of satellites visible in the field of view. The number of interferences; The expression for the combined signal vector is: ; in, For the combined signal vector, For the first One element; The first The expression for each element is: ; in, For the first The satellite signal in the first The phase difference of each array element relative to the first array element For the first The interference at the first The phase difference of each array element relative to the first array element , It is the transpose symbol for a vector or matrix; The first array element is the reference array element.
5. The control method according to claim 4, characterized in that, The matrix expression for the combined signal vector is: ; in, The satellite signal steering vector matrix, For the first The direction of arrival of each satellite signal relative to the array antenna. For the first The steering vector formed by the satellite signals on the array antenna For satellite signal vectors, For the interference steering vector matrix, For the first The interference is relative to the direction of the incoming wave from the array antenna. For the first The steering vector formed by the interference on the array antenna. For interference vectors, This is the noise vector; The expression for the adaptive zeroing anti-interference weight vector is: ; in, For the weight vector The amplitude of each element, For the weight vector The phase of each element, .
6. The control method according to claim 5, characterized in that, The formula used to perform amplitude and phase weighting and summation of the combined signal vector using the adaptive zero-adjustment anti-interference weight vector is as follows: ; in, It is the conjugate transpose of a vector or matrix. It is the conjugate symbol for a vector or matrix. For the combined signal vector, This is the adaptive zeroing anti-interference weight vector.
7. The control method according to claim 6, characterized in that, The total amplitude and phase distortion introduced by a satellite signal within the field of view is: ; For the first The total amplitude and phase distortion introduced by each satellite signal is: ; For the first The expressions for the total amplitude distortion and total phase distortion introduced by each satellite signal are as follows: ; 。 8. The control method according to claim 7, characterized in that, The expression for compensating for the total amplitude and phase distortion in the combined satellite signal after anti-interference processing is as follows: ; For the first The expression for amplitude and phase compensation of a satellite signal is: = ; in, For the first Amplitude compensation for individual satellite signals, For the first Phase compensation for individual satellite signals.
9. The control method according to claim 8, characterized in that, The calculation of the total amplitude and phase distortion introduced by the multi-beam anti-interference weighting to the purified satellite signal includes: The combined signal is processed by the receiving channel to form a combined signal vector; Towards the Multi-beam anti-jamming weight vector for a visible satellite The combined signal vector is then weighted by amplitude and phase and summed to obtain the purified first... One satellite signal; For the first Total amplitude and phase distortion introduced by each satellite signal; The purification process includes high signal-to-noise ratio reception and effective suppression of interference.
10. The control method according to claim 9, characterized in that, Towards the Multi-beam anti-jamming weight vector for a visible satellite The expression for summing the magnitude and phase weights of the combined signal vector is as follows: ; in, , No. Multi-beam anti-jamming weight vector , For the weight vector The amplitude of each element, For the weight vector The phase of each element, L=12; For the first The expression for the total amplitude and phase distortion introduced by a single satellite signal is: ; remember The above expression can be rearranged as follows: ; For the first The expressions for the total amplitude distortion and total phase distortion introduced by each satellite signal are as follows: ; ; Compensation for this total amplitude and phase distortion in the purified satellite signal after anti-interference processing includes: Weighting of multi-beam anti-jamming in the first stage Amplitude and phase compensation is performed on the total amplitude and phase distortion introduced by each satellite signal. The expression for amplitude and phase compensation is as follows: = ; in, For amplitude compensation, For phase compensation.
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