Passive direction finding algorithm for selecting baseline based on phased array

Abstract

The invention relates to a passive direction finding algorithm for selecting a baseline based on a phased array, and the method comprises the following steps: a), selecting a part of array elements inthe phased array to form a two-dimensional interferometer for direction finding; b), taking the direction finding result of the interferometer as the basis for determining the range of MUSIC spatialdomain search; c), completing the high-precision estimation of the pitch angle and azimuth angle through a MUSIC algorithm.

Description

technical field [0001] The present application relates to an algorithm, in particular to a passive direction finding algorithm based on phased array selection baseline. Background technique [0002] Among the existing passive direction-finding algorithms, the passive direction-finding algorithm based on large phased array can improve the direction-finding accuracy and anti-interference ability of electronic reconnaissance satellites. However, the increasing scale of reconnaissance antennas further increases the The economic cost and cycle cost, while the electronic reconnaissance satellite based on a large reconnaissance antenna has poor concealment and invulnerability. [0003] According to the above analysis, facing the development needs of my country's electronic reconnaissance satellites with multiple functions, strong practicability, wide adaptability and concealment and indestructibility, and aiming at the problems of poor concealment, high R&D costs and long cycle cau...

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Problems solved by technology

[0002] Among the existing passive direction finding algorithms, the passive direction finding algorithm based on a large phased array can improve the direction finding accuracy and anti-interference ability of electronic reconnaissance satellites. However, the continuous increase in the scale of reconnaissance antennas further increases the Economic cost and cycle cost, while electronic reconnaissance satellites based on large reconnaissance antennas have poor concealment and invulnerability

[0003] According to the above analysis, facing the development needs of my country's electronic reconnaissance satellites with multiple functions, strong practicability, wide adaptability and concealment and indestructibility, and aiming at the problems of poor concealment, high R&D costs and long cycle caused by electronic reconnaissance technology based on large-scale antennas, There is a need in the art for a novel algorithm for covert and efficient electronic reconnaissance

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