Planar array multiple-target angle high-resolution realizing method

A planar array and implementation method technology, applied in the field of phased array radar, can solve the problems of reducing the amount of algorithm calculation, poor real-time performance of the algorithm, hardware storage pressure, etc., and achieve the effect of improving real-time performance

Active Publication Date: 2016-01-13
SHANGHAI RADIO EQUIP RES INST
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Problems solved by technology

In the literature, projective transformation is used to project the received data of the array to the general direction interval of the signal source. On the one hand, the preprocessing of the received data is used to suppress the model error and enhance the robustness of the algorithm; In this method, constructing the projection transformation matrix and calculating the pro

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  • Planar array multiple-target angle high-resolution realizing method
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  • Planar array multiple-target angle high-resolution realizing method

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Embodiment Construction

[0043] The present invention will be further elaborated below by describing a preferred specific embodiment in detail in conjunction with the accompanying drawings.

[0044] Such as figure 2 As shown, a planar array multi-target angle high-resolution implementation method, the method includes the following steps:

[0045] S1, using two-dimensional simplification to one-dimensional method, respectively perform beam domain FFT on the data received by the array in the pitch direction and azimuth direction, and obtain the general direction of the target in the pitch direction and azimuth direction;

[0046] S2, perform two-dimensional angle traversal pairing according to the obtained azimuth and pitch angle, and determine the angle search interval;

[0047] S3, estimate the two-dimensional angle of multiple targets, and determine the number and angle of targets.

[0048] The specific step S1 is as follows: adopting the method of simplifying two-dimensional to one-dimensional, fir...

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Abstract

The invention discloses a planar array multiple-target angle high-resolution realizing method. The planar array multiple-target angle high-resolution realizing method comprises the steps of S1, conducting beam domain FFT on received data of arrays in the pitching direction and the azimuth direction with the method for simplifying two dimensions into one dimension, so that the rough directions of targets in the pitching direction and the azimuth direction are obtained; S2, conducting two-dimension angle traversal pairing according to the obtained azimuth angle and pitching angle, and determining an angle searching region; S3, estimating the two-dimension angles of the multiple targets and determining the number and angle of the targets. By the adoption of the planar array multiple-target angle high-resolution realizing method, the angle of the multiple targets can be effectively estimated, algorithm calculation is far smaller than that of the traditional planar array angle resolution algorithm, and engineering realization is facilitated.

Description

technical field [0001] The invention relates to the field of phased array radar, in particular to a method for realizing high resolution of multi-target angles in a plane array. Background technique [0002] Direction of Arrival (DOA) estimation has always been one of the important research contents of array signal processing, and plays a very important role in communication, sonar, radar, ocean development, biomedical engineering and other application fields. [0003] The spatial spectrum estimation algorithm can break through the "Rayleigh limit" limitation of the angular resolution of the array, and improve the spatial angular resolution capability. The subspace algorithm represented by the MUSIC algorithm has attracted extensive attention of researchers due to its good resolution performance, and is the most commonly used method in DOA estimation. [0004] In actual engineering, limited by conditions, the small number of snapshots and the existence of array errors will ...

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Application Information

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IPC IPC(8): G01S13/68G01S13/88
CPCG01S13/68G01S13/88
Inventor 黄飞李毓琦王佳朱剑
Owner SHANGHAI RADIO EQUIP RES INST
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