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Short-range clutter suppression method combining oblique projection and interpolation in airborne CFA radar

Short-range clutter suppression method combining oblique projection and interpolation in airborne CFA radar

作     者:HU Yili ZHAO Yongbo PANG Xiaojiao CHEN Sheng HU Yili;ZHAO Yongbo;PANG Xiaojiao;CHEN Sheng

作者机构:National Laboratory of Radar Signal ProcessingXidian UniversityXi’an 710071China 

基  金:supported by the Fund for Foreign Scholars in University Research and Teaching Programs(the 111 Project)(B18039) 

出 版 物:《Journal of Systems Engineering and Electronics》 (系统工程与电子技术(英文版))

年 卷 期:2021年第32卷第1期

页      码:92-102页

摘      要:The airborne conformal array(CFA)radar s clutter ridges are range-modulated,which result in a bias in the estimation of the clutter covariance matrix(CCM)of the cell under test(CUT),further,reducing the clutter suppression performance of the airborne CFA *** clutter ridges can be effectively compensated by the space-time separation interpolation(STSINT)method,which costs less computation than the space-time interpolation(STINT)method,but the performance of interpolation algorithms is seriously affected by the short-range clutter,especially near the platform *** distributions of CFA are free,which yields serious impact that range spaces of steering vector matrices are non-orthogonal complement and even no longer ***,a new method is proposed that the shortrange clutter is pre-processed by oblique projection with the intersected range spaces(OPIRS),and then clutter data after being pre-processed are compensated to the desired range bin through the STSINT *** OPIRS also has good compatibility and can be used in combination with many existing *** the same time,oblique projectors of OPIRS can be obtained in advance,so the proposed method has almost the same computational load as the traditional compensation *** addition,the proposed method can perform well when the channel error *** simulation results verify the effectiveness of the proposed method.

主 题 词:airborne conformal arrays(CFA)radar oblique projection intersected range space short-range clutter suppression 

学科分类:080904[080904] 0810[工学-土木类] 0809[工学-计算机类] 08[工学] 081105[081105] 081001[081001] 081002[081002] 0825[工学-环境科学与工程类] 0811[工学-水利类] 

核心收录:

D O I:10.23919/JSEE.2021.000010

馆 藏 号:203102103...

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