Nonstationary Clutter Compensation for Airborne Surveillance Radar Systems With Crab Angle

Lingyu Wang, Penghui Huang*, Xiang Gen Xia, Donghong Wang, Jiangyuan Chen, Yongyan Sun, Xingzhao Liu*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

In this letter, the clutter range dependence issue caused by crab angle is investigated in an airborne multichannel radar system. A new method is proposed to accomplish the crab angle estimation and the nonstationary error compensation. First, from the center-biased and spectrum-broadened characteristics of the clutter space-time spectrum in the case of nonneglected crab angle, a 1-D cost function based on space-time spectrum broadening degree is constructed to achieve the accurate crab angle estimation. Then, the clutter nonstationary errors can be effectively compensated in the post-Dopplerdomain,significantly improving the subsequent space-time adaptive processing (STAP) performance. Simulation results are presented to validate the feasibility and effectiveness of the proposed method.

Original languageEnglish
Article number3505405
JournalIEEE Geoscience and Remote Sensing Letters
Volume20
DOIs
Publication statusPublished - 2023
Externally publishedYes

Keywords

  • Airborne radar system
  • clutter suppression
  • crab angle estimation
  • nonstationary error compensation
  • space time adaptive processing (STAP)

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