基于Chirp Z变换的海面目标帧间非相参积累技术

doi:10.12305/j.issn.1001-506X.2021.02.13

Abstract

Abstract:

In order to improve the detection ability of radar to weak target on the sea surface, a noncohe-rent integration technology based on Chirp Z transform is proposed. Firstly, the radar echo signal model with different carrier frequencies in multiple cycle scanning is established. Then, a method of interframe Doppler correction and range walk compensation for moving targets based on Chirp Z transform is proposed, which makes the target appear in the same range-Doppler detection unit after processing the multiple cycle scanning data, so that the interframe noncoherent integration can be carried out directly, and the performance of weak target detection can be improved. Finally, the effectiveness of the proposed method is verified by the simulation test and the measured data.

Key words: sea surface target detection, track before detect, noncoherent integration, Chirp Z transform

CLC Number:

TN957.51

Ning WANG, Ming ZHOU, Guoqing LIU, Yuhao YANG, Jun SUN. Interframe noncoherent integration technology based on Chirp Z transform for sea surface target[J]. Systems Engineering and Electronics, 2021, 43(2): 383-389.

Figures/Tables 5

References 25

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Interframe noncoherent integration technology based on Chirp Z transform for sea surface target

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