Long-time coherent accumulation algorithm for variable acceleration maneuvering targets based on TRT

Shu Zhang; Ming Li; Dazhi Xu

doi:10.1117/12.2671466

29 March 2023 Long-time coherent accumulation algorithm for variable acceleration maneuvering targets based on TRT

Shu Zhang, Ming Li, Dazhi Xu

Proceedings Volume 12594, Second International Conference on Electronic Information Engineering and Computer Communication (EIECC 2022); 125942R (2023) https://doi.org/10.1117/12.2671466
Event: Second International Conference on Electronic Information Engineering and Computer Communication (EIECC 2022), 2022, Xi'an, China

Abstract

Aiming at the high-order range walk and Doppler walk problems encountered by maneuvering targets in the long-time coherent accumulation process, a long-time coherent accumulation algorithm for variable acceleration maneuvering targets based on time reversing transform (TRT) is proposed. Firstly, the time series inversion transformation is performed on the echo signal after de-carrier frequency and pulse compression, which can correct the linear distance walking caused by the maneuvering target speed and the high-order distance walking and Doppler walking caused by the variable acceleration. Multi-linear function transformation is used to correct the second-order range walk and linear Doppler walk caused by acceleration. Finally, FFT and IFFT are used to achieve coherent accumulation of target energy. Simulation experiments show that the proposed algorithm is effective in correcting the moving objects with variable acceleration. At the same time, the detection performance of the algorithm is better than that of the PHAF algorithm, the RFT algorithm, the RFRFT algorithm and the RFRAF algorithm. It has lower computational complexity and does not require search for motion parameters.

Citation Download Citation

Shu Zhang, Ming Li, and Dazhi Xu "Long-time coherent accumulation algorithm for variable acceleration maneuvering targets based on TRT", Proc. SPIE 12594, Second International Conference on Electronic Information Engineering and Computer Communication (EIECC 2022), 125942R (29 March 2023); https://doi.org/10.1117/12.2671466

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KEYWORDS

Detection and tracking algorithms

Target detection

Doppler effect

Radar signal processing

Monte Carlo methods

Silicon

Computer simulations

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