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Multi-sensor composite array antenna layout and multi-information fusion sorting angle measurement method

A composite array, multi-sensor technology, applied in direction finders using radio waves, radio wave direction/deviation determination systems, etc., to achieve the effect of improving accuracy

Active Publication Date: 2022-05-17
SOUTHWEST CHINA RES INST OF ELECTRONICS EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of this, aiming at the problems of array direction finding sorting, direction finding and anti-baiting in complex environments, the present invention provides a multi-sensor composite array antenna array and multi-information fusion sorting angle measurement method, based on interferometer pulse-by-pulse The advantage of fast direction finding realizes angle sorting first and then parameter sorting, which improves the accuracy of signal sorting

Method used

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  • Multi-sensor composite array antenna layout and multi-information fusion sorting angle measurement method

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Embodiment 1

[0059] see figure 1 , the invention discloses a multi-sensor composite array antenna array and multi-information fusion sorting angle measurement method, comprising the following steps:

[0060] S1. Perform parameter measurement on signals received by the antenna array to obtain corresponding pulse description words;

[0061] S2. Using the amplitude and phase of the front edge of the antenna to perform interferometer direction finding to obtain the azimuth angle of each pulse description word;

[0062] S3, using the interferometer direction finding results to perform angle sorting;

[0063] S4. Perform electromagnetic parameter sorting on the pulses satisfying the angle sorting result;

[0064] S5. Setting the spectrum estimation direction finding range according to the direction finding result of the interferometer;

[0065] S6. Perform small-range spectrum estimation and angle measurement on the pulses satisfying the angle and electromagnetic parameter sorting results, an...

Embodiment 2

[0100] Carry out the antenna array according to the installation aperture to form the linear array required by the interferometer and the multi-polarized array required for spectrum estimation. The present invention provides an embodiment of a typical array antenna array, as figure 2 As shown, the numbered 1~5 antennas are left-handed circularly polarized antennas, the numbered 6th antenna is a 45° slanted line polarized antenna, the 7th antenna is a right-handed circularly polarized antenna, and the 8th antenna is a -45° slanted line Polarized antenna; 3 antennas numbered 1, 2, and 3 are arranged in a straight line in the azimuth direction to form the azimuth baseline of the interferometer. The length between antenna 1 and antenna 2 is 1 of the length between antenna 2 and antenna 3 / 2 to 1 / 3; 3 antennas numbered 1, 4, and 5 are arranged in a straight line in the pitch direction to form the pitch baseline of the interferometer. The length between antenna 1 and antenna 4 is be...

Embodiment 3

[0132] In this implementation example, calculation and analysis are carried out by means of simulation calculation. By adopting the method proposed by the present invention, four radar positions are quickly sorted and direction-finding is carried out, wherein one radar position contains radar targets and three decoys.

[0133] The simulation calculation setting scenario is as follows image 3 shown.

[0134] 1) Position setting of the real target and the false target in the Beitiandong coordinate system of the prediction point: radar target 1 position (-400,0,0), decoy 1 position (400,0,0), decoy 2 position (0,- 330,0), decoy 3 position (0,330,0), radar target 2 position (3000,1000,0), radar target 3 position (-5000,-5000,0), radar target 4 position (1000,-10000, 0), the unit is meter;

[0135] 2) The electromagnetic parameters of each radar target are as follows:

[0136] The electromagnetic signal parameters of radar target 1 are: frequency agility 5300MHz~5800MHz, repet...

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Abstract

The invention discloses a multi-sensor composite array antenna array and multi-information fusion sorting angle measurement method, which belongs to the field of fusion technology. The pulse description word; Step 2, use the amplitude and phase of the front edge of the antenna to perform interferometer direction finding, and obtain the azimuth angle of each pulse description word; Step 3, use the interferometer direction finding result to carry out angle sorting; Step 4, sort the satisfying angle The resulting pulses are sorted by electromagnetic parameters; step 5, set the spectrum estimation direction finding range according to the interferometer direction finding results; step 6, perform small-range spectrum estimation and angle measurement on the pulses that meet the angle and electromagnetic parameter sorting results, and output the points Selection and angle measurement results. The invention realizes angle sorting first and then parameter sorting, improves the accuracy of signal sorting, dilutes the pulse density and reduces the angle measurement range of spectrum estimation at the same time, and lays the foundation for fast and accurate detection of targets in complex electromagnetic environments.

Description

technical field [0001] The invention relates to the field of fusion technology in the field of array antenna layout and signal processing, in particular to a method for multi-sensor composite array antenna layout and multi-information fusion sorting and angle measurement. Background technique [0002] In the array direction finding process, common direction finding methods include interferometer direction finding and spectral estimation direction finding. The interferometer angle measurement has a fast operation speed, and can realize real-time direction finding pulse by pulse. Combined with the angle sorting method, it has a strong sorting ability for complex electromagnetic environments, but it does not have super-resolution capabilities, and its accuracy is not as good as spectral estimation direction finding; It has high direction accuracy and can realize super-resolution anti-bait, but the calculation speed is slow, and it is difficult to realize pulse-by-pulse real-tim...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S3/14
CPCG01S3/14
Inventor 王浩丞沈志博朱全江唐勇刘俊
Owner SOUTHWEST CHINA RES INST OF ELECTRONICS EQUIP