Modified Adaptive Pulse Compression Algorithm for Targets with Range-Straddling

Chen Ning,Jing Tian,Kun Li,Siliang Wu

IEEE Transactions on Aerospace and Electronic Systems（2021）SCI 2区SCI 1区

Beijing Inst Technol

被引用6|浏览22

摘要

Adaptive pulse compression (APC) has been proposed based on the minimum mean square error (MMSE) criterion to effectively suppress range sidelobes of strong targets and retrieve all targets in multi-target scenarios. However, MMSE-based algorithms suffer from deteriorated performance in the presence of targets with range-straddling due to modelling mismatch. This degradation can be partially compensated by modified MMSE-based algorithms. To further suppress sidelobes when range straddling occurs, we propose a modified APC algorithm robust to targets with range-straddling, namely range-straddling-robust APC (RSR-APC). We first establish the signal model for targets with range-straddling and then derive the expressions of the MMSE filter based on matched filter outputs and the range-straddling offsets based on an improved Rife algorithm. Simulation results show that the proposed algorithm can suppress sidelobes of targets with range-straddling and improve estimation accuracy of target positions in different scenarios.

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关键词

Estimation,Adaptation models,Compression algorithms,Simulation,Signal to noise ratio,Mean square error methods,Computational modeling,Adaptive pulse compression (APC),minimum mean square error,range straddling,sidelobe suppression

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