基于非标准Keystone变换的捷变频雷达相参积累算法

doi:10.12305/j.issn.1001-506X.2023.12.13

Abstract

Abstract:

Aim at the problem of coherent integration in frequency-agile radar (FAR), a coherent integration algorithm of FAR based on non-standard Keystone transform (KT) is proposed. Compared with the standard KT, the proposed algorithm adds a segment of range compensation, and uses a different method for creating virtual slow-time echo. Considering that the range information of target is usually unknown, the algorithm greatly reduces the range search interval, based on the periodicity of range-compensated signal. The simulation results show that the proposed algorithm does not need the prior information of target range, and can solve the problems of coherent integration of coherent integration, range migration and Doppler ambiguity in high-speed moving target. The anti-noise performance is equivalent to the current main frequency-agile coherent integration methods based on compressed sensing, with lower amount of calculation.

Key words: frequency-agile radar (FAR), coherent integration, Keystone transform (KT)

CLC Number:

TN958

Liang ZHANG, Qinglei DU, Bilei ZHOU, Qizhe QU, Yongliang WANG. A coherent integration algorithm of frequency-agile radar based on non-standard Keystone transform[J]. Systems Engineering and Electronics, 2023, 45(12): 3836-3844.

Figures/Tables 13

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A coherent integration algorithm of frequency-agile radar based on non-standard Keystone transform

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