CN-119414342-B - Array antenna cluster interference processing method, electronic equipment and storage medium

CN119414342BCN 119414342 BCN119414342 BCN 119414342BCN-119414342-B

Abstract

The application provides an array antenna cluster interference processing method, electronic equipment and a storage medium, wherein the method comprises the steps of determining a virtual guiding vector corresponding to a virtual interference source, and determining an interference guiding vector corresponding to a previous interference source and an interference guiding vector corresponding to a current interference source; the method comprises the steps of determining an optimal weight vector corresponding to a previous interference source, determining the optimal weight vector corresponding to the current interference source according to the optimal weight vector corresponding to the previous interference source, an interference guide vector corresponding to the current interference source, a coefficient corresponding to the current interference source and a preset constraint condition, and determining a null level corresponding to the current interference source according to a virtual guide vector, the interference guide vector corresponding to the current interference source and the optimal weight vector corresponding to the current interference source. The accurate control of the level at the specific angle is realized, and then the accurate suppression of the cluster interference by the single radar can be realized.

Inventors

GONG JIAN
CHEN GENG
GUO YIDUO
FENG CUNQIAN
SUN HONGWEI
SONG BAOJUN
ZHOU CHANGLIN

Assignees

中国人民解放军空军工程大学

Dates

Publication Date: 20260512
Application Date: 20241112

Claims (10)

1. An array antenna cluster interference processing method, which is characterized by comprising the following steps: determining a virtual guide vector corresponding to the virtual interference source according to the virtual interference distance and the virtual interference angle corresponding to the virtual interference source, the attribute information of each receiving array element in the receiving array antenna and the attribute information of each transmitting array element in the transmitting array antenna; determining an interference guide vector corresponding to a previous interference source and an interference guide vector corresponding to a current interference source according to a previous interference distance and a previous interference angle corresponding to the previous interference source of the current interference source, a current interference distance and a current interference angle corresponding to the current interference source, attribute information of each receiving array element and attribute information of each sending array element; Determining an optimal weight vector corresponding to the previous interference source according to the virtual guide vector, the interference guide vector corresponding to the previous interference source, the previous noise power of the previous interference source and the previous interference power; determining an optimal weight vector corresponding to the current interference source according to the optimal weight vector corresponding to the previous interference source, the interference guide vector corresponding to the current interference source, the coefficient corresponding to the current interference source and a preset constraint condition; And determining the null level corresponding to the current interference source according to the virtual guide vector, the interference guide vector corresponding to the current interference source and the optimal weight vector corresponding to the current interference source.
2. The method for processing the cluster interference of the array antenna according to claim 1, wherein determining the virtual steering vector corresponding to the virtual interference source according to the virtual interference distance and the virtual interference angle corresponding to the virtual interference source, the attribute information of each receiving array element in the receiving array antenna, and the attribute information of each transmitting array element in the transmitting array antenna comprises: Determining sub-transmission guidance of each transmission array element according to the virtual interference distance and the virtual interference angle corresponding to the virtual interference source, the transmission interval between the transmission array elements, the sequence number of each transmission array element, the preset frequency offset between the transmission array elements, the light speed and the wavelength of the signal transmitted by each transmission array element, and determining a virtual transmission guidance vector according to each sub-transmission guidance; Determining sub-receiving guidance of each receiving array element according to the virtual interference angle corresponding to the virtual interference source, the receiving interval between each receiving array element, the sequence number of each receiving array element, the light speed and the wavelength of the signal, and determining a virtual receiving guidance vector according to each sub-receiving guidance; and taking the product of the sending steering vector and the virtual receiving steering vector as the virtual steering vector.
3. The method of claim 2, wherein determining the sub-transmission direction of each transmitting element according to the virtual interference distance and the virtual interference angle corresponding to the virtual interference source, the transmission interval between the transmitting elements, the number of sequences of each transmitting element, the preset frequency offset between the transmitting elements, the light speed, and the wavelength of the signal transmitted by each transmitting element comprises: taking the quotient of the transmission interval and the wavelength of the signal as a first parameter, and calculating the product of the first parameter and the sine value of the virtual interference angle to obtain a first product; dividing the product of the virtual interference distance and the first preset value by the light speed to obtain a second parameter; calculating the product of the second parameter and the preset frequency offset to obtain a second product; multiplying the difference between the first product and the second product by the product of the difference obtained by subtracting the second preset value from the sequence number of the transmitting array element and a third preset value to obtain a third parameter; and carrying out complex exponential calculation on the third parameter to obtain sub-transmission guidance of each transmission array element.
4. The method for processing the interference of the array antenna cluster according to claim 2, wherein the determining a virtual transmission steering vector according to each of the sub-transmission steering comprises: combining the sub-transmission guide of each transmission array element into a first transmission guide vector; And taking the transposed result of the first transmission guide vector as the virtual transmission guide vector.
5. The method of claim 2, wherein determining the sub-reception direction of each receiving array element according to the virtual interference angle corresponding to the virtual interference source, the receiving space between each receiving array element, the sequence number of each receiving array element, the light speed, and the wavelength of the signal comprises: Taking the quotient of the receiving interval and the wavelength of the signal as a fourth parameter, and calculating the product of the fourth parameter and the sine value of the virtual interference angle to obtain a third product; multiplying the third product by the product of the difference obtained by subtracting the second preset value from the sequence number of the receiving array element, and obtaining a fifth parameter; And carrying out complex exponential calculation on the fifth parameter to obtain sub-receiving guidance of each receiving array element.
6. The method of claim 1, wherein determining the optimal weight vector corresponding to the previous interference source according to the virtual steering vector, the interference steering vector corresponding to the previous interference source, the previous noise power of the previous interference source, and the previous interference power comprises: Dividing the previous interference power by the previous noise power to obtain a dry-to-noise ratio of the previous interference source; Determining a coefficient corresponding to the previous interference source according to the interference-to-noise ratio of the previous interference source, the conjugate transpose of the interference guide vector corresponding to the previous interference source, the virtual guide vector and a second preset value; and determining an optimal weight vector corresponding to the previous interference source according to the coefficient corresponding to the previous interference source, the interference guide vector corresponding to the previous interference source, the virtual guide vector and the previous noise power.
7. The method for processing the array antenna cluster interference according to claim 1, wherein the determining the optimal weight vector corresponding to the current interference source according to the optimal weight vector corresponding to the previous interference source, the interference guide vector corresponding to the current interference source, the coefficient corresponding to the current interference source, and a preset constraint condition includes: And adding the product of the interference guide vector corresponding to the current interference source and the coefficient corresponding to the current interference source and the optimal weight vector corresponding to the previous interference source to obtain a vector sum, and taking the vector sum meeting the preset constraint condition as the optimal weight vector corresponding to the current interference source.
8. The method of claim 1, wherein the determining the null level corresponding to the current interference source according to the virtual steering vector, the interference steering vector corresponding to the current interference source, and the optimal weight vector corresponding to the current interference source comprises: determining a conjugate transpose vector of an optimal weight vector corresponding to the current interference source; taking the product of the conjugate transpose vector and the interference guide vector corresponding to the current interference source as a fourth product; taking the product of the conjugate transpose vector and the virtual steering vector as a fifth product; and determining the null level according to the fourth product and the fifth product.
9. An electronic device comprising a memory and a processor, the memory storing a computer program executable by the processor, the processor implementing the steps of the method for processing array antenna cluster interference according to any one of claims 1-8 when the computer program is executed.
10. A computer readable storage medium, characterized in that the computer readable storage medium has stored thereon a computer program which, when executed by a processor, performs the steps of the array antenna cluster interference processing method according to any of claims 1-8.

Description

Array antenna cluster interference processing method, electronic equipment and storage medium Technical Field The present application relates to the field of electronic countermeasure technologies, and in particular, to a method for processing array antenna cluster interference, an electronic device, and a storage medium. Background In the radar field, the functions of signal transmission, interference prevention and the like can be realized through a multi-part radar networking mode. However, the method for networking multiple radars has the problems of large amount of radar equipment, low cost efficiency, slow data transmission and the like. Disclosure of Invention The present application aims to solve the above-mentioned drawbacks of the prior art, and provides an array antenna cluster interference processing method, an electronic device, and a storage medium, which improve the resistance to cluster interference. In order to achieve the above purpose, the technical scheme adopted by the embodiment of the application is as follows: In a first aspect, an embodiment of the present application provides a method for processing interference of an array antenna cluster, where the method includes: determining a virtual guide vector corresponding to the virtual interference source according to the virtual interference distance and the virtual interference angle corresponding to the virtual interference source, the attribute information of each receiving array element in the receiving array antenna and the attribute information of each transmitting array element in the transmitting array antenna; Determining an interference guide vector corresponding to a previous interference source and an interference guide vector previous to the current interference source according to a previous interference distance and a previous interference angle corresponding to the previous interference source of the current interference source, a current interference distance and a current interference angle corresponding to the current interference source, attribute information of each receiving array element and attribute information of each sending array element; Determining an optimal weight vector corresponding to the previous interference source according to the virtual guide vector, the interference guide vector corresponding to the previous interference source, the noise power of the previous interference source and the interference power; determining an optimal weight vector corresponding to the current interference source according to the optimal weight vector corresponding to the previous interference source, the interference guide vector corresponding to the current interference source, the coefficient corresponding to the current interference source and a preset constraint condition; And determining the null level corresponding to the current interference source according to the virtual guide vector, the interference guide vector and the optimal weight vector corresponding to the current interference source. Optionally, the determining the virtual steering vector corresponding to the virtual interference source according to the virtual interference distance and the virtual interference angle corresponding to the virtual interference source, the attribute information of each receiving array element, and the attribute information of each transmitting array element in the transmitting array antenna includes: Determining sub-transmission guidance of each transmission array element according to the virtual interference distance and the virtual interference angle corresponding to the virtual interference source, the transmission interval between the transmission array elements, the sequence number of each transmission array element, the preset frequency offset between the transmission array elements, the light speed and the wavelength of the signal transmitted by each transmission array element, and determining a virtual transmission guidance vector according to each sub-transmission guidance; Determining sub-receiving guidance of each receiving array element according to the virtual interference angle corresponding to the virtual interference source, the receiving interval between each receiving array element, the sequence number of each receiving array element, the light speed and the wavelength of the signal, and determining a virtual receiving guidance vector according to each sub-receiving guidance; and taking the product of the sending steering vector and the virtual receiving steering vector as the virtual steering vector. Optionally, determining the sub-transmission direction of each transmitting array element according to the virtual interference distance and the virtual interference angle corresponding to the virtual interference source, the transmission interval between the transmitting array elements, the sequence number of each transmitting array element, the preset frequency offset between the transmitting array ele