Systems Engineering and Electronics ›› 2021, Vol. 43 ›› Issue (2): 383-389.doi: 10.12305/j.issn.1001-506X.2021.02.13

• Sensors and Signal Processing • Previous Articles     Next Articles

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

Ning WANG1,2(), Ming ZHOU1,2(), Guoqing LIU1,2(), Yuhao YANG1,2(), Jun SUN1,2()   

  1. 1. Nanjing Research Institute of Electronics Technology, Nanjing 210039, China
    2. Key Laboratory of Intellisense Technology, China Electronics Technology Group Corpration, Nanjing 210039, China
  • Received:2020-04-20 Online:2021-02-01 Published:2021-03-16

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: 

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