TY - JOUR
T1 - Nonstationary Clutter Compensation for Airborne Surveillance Radar Systems With Crab Angle
AU - Wang, Lingyu
AU - Huang, Penghui
AU - Xia, Xiang Gen
AU - Wang, Donghong
AU - Chen, Jiangyuan
AU - Sun, Yongyan
AU - Liu, Xingzhao
N1 - Publisher Copyright:
© 2004-2012 IEEE.
PY - 2023
Y1 - 2023
N2 - 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.
AB - 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.
KW - Airborne radar system
KW - clutter suppression
KW - crab angle estimation
KW - nonstationary error compensation
KW - space time adaptive processing (STAP)
UR - http://www.scopus.com/inward/record.url?scp=85163449409&partnerID=8YFLogxK
U2 - 10.1109/LGRS.2023.3287911
DO - 10.1109/LGRS.2023.3287911
M3 - Article
AN - SCOPUS:85163449409
SN - 1545-598X
VL - 20
JO - IEEE Geoscience and Remote Sensing Letters
JF - IEEE Geoscience and Remote Sensing Letters
M1 - 3505405
ER -