作者机构：
[Li, Wenguo; Deng, Yaqi; Pei, Zhengwang; Deng, YQ; Jiang, Dongchu] Hunan City Univ, Sch Informat & Elect Engn, 518 Yingbin East Rd, Yiyang 413000, Peoples R China.;[Li, Wenguo; Deng, Yaqi; Deng, YQ; Jiang, Dongchu] Hunan City Univ, All Solid State Energy Storage Mat & Devices Key L, Yiyang 413000, Peoples R China.
通讯机构：
[Deng, YQ ] H;Hunan City Univ, Sch Informat & Elect Engn, 518 Yingbin East Rd, Yiyang 413000, Peoples R China.;Hunan City Univ, All Solid State Energy Storage Mat & Devices Key L, Yiyang 413000, Peoples R China.
摘要：
In an airborne passive radar, multipath (MP) clutter, which is caused by MP signals contained in the contaminated reference signal, degrades the space-time adaptive processing (STAP) performance. The MP clutter suppression algorithm before STAP can mitigate the influence of impure reference signals. However, the performances of the existing MP clutter suppression methods deteriorate when the intrinsic clutter motion (ICM) exists because the sparse model of MP clutter is disturbed. To eliminate the impacts of ICM on MP clutter suppression, a joint optimization algorithm is developed for airborne passive radar. Firstly, the sparse model of MP clutter is modified by taking ICM fluctuation into account. Subsequently, the joint optimization function of the ICM fluctuation and MP clutter profile is derived. Finally, based on the local search technique, MP clutter is suppressed with ICM error calibration and off-grid effects mitigation. A range of simulations verify the reliability and superiority of the proposed method.
作者机构：
[曲咏哲; 蒋冬初; 李玉山; 闫旭] School of Electronic Engineering, Xidian University, Xi'an 710071, China;[蒋冬初] School of Communication and Electronic Engineering, Hunan City University, Yiyang 413000, China
通讯机构：
School of Electronic Engineering, Xidian University, China
作者机构：
[丁同浩; 李玉山; 蒋冬初; 路建民; 闫旭; 曲咏哲] Research Inst. of Electronic CAD, Xidian Univ., Xi'an 710071, China;[蒋冬初] School of Comm. and Electronic Eng., Hunan City Univ., Yiyang 413000, China
通讯机构：
Research Inst. of Electronic CAD, Xidian Univ., China
作者机构：
[李玉山; 路建民; 蒋冬初; 曲永哲; 闫旭] Research Inst. of Electronic CAD, Xidian Univ., Xi'an 710071, China;[蒋冬初] School of Comm. and Electronic Eng., Hunan City Univ., Yiyang 413000, China
通讯机构：
Research Inst. of Electronic CAD, Xidian Univ., China
作者机构：
[路建民; 李玉山; 丁同浩; 蒋冬初*] Institute of Electronic CAD, Xidian University, Xi'an 710071, China;[蒋冬初*] School of Electronic Engineering, Hunan City University, Yiyang 413000, China
通讯机构：
[Jiang, D.-C.] I;Institute of Electronic CAD, Xidian University, China
作者机构：
[李玉山; 邱家涛; 蒋冬初; 路建民] Research Inst. of Electronic CAD, Xidian Univ., Xi'an 710071, China;[蒋冬初] School of Communication and Electronic Eng., Hunan City Univ., Yiyang 413000, China
通讯机构：
Research Inst. of Electronic CAD, Xidian Univ., China
作者机构：
[丁同浩; 李玉山; 闫旭; 蒋冬初; 曲咏哲] Research Inst. of Electronic CAD, Xidian Univ., Xi'an 710071, China;[蒋冬初] School of Comm. and Electronic Eng., Hunan City Univ., Yiyang 413000, China
通讯机构：
Research Inst. of Electronic CAD, Xidian Univ., China
