Acta Metallurgica Sinica(English letters) ›› 2010, Vol. 17 ›› Issue (5): 32-37.doi: 10.1016/S1005-8885(09)60504-5

• Wireless • 上一篇    下一篇

Joint parameter estimation of DOD/DOA/polarization for bistatic MIMO radar

姜宏,王得发,刘畅   

  1. 吉林大学
  • 收稿日期:2009-11-30 修回日期:2010-07-16 出版日期:2010-10-30 发布日期:2010-10-31
  • 通讯作者: 姜宏 E-mail:jiangh@jlu.edu.cn
  • 基金资助:

    国家自然科学基金;教育部博士点基金;其他

Joint parameter estimation of DOD/DOA/polarization for bistatic MIMO radar

  1. College of Communication Engineering, Jilin University, Changchun 130012, China
  • Received:2009-11-30 Revised:2010-07-16 Online:2010-10-30 Published:2010-10-31

摘要:

In the paper, polarization-sensitive array is exploited at the receiver of multiple input multiple output (MIMO) radar system, a novel method is proposed for joint estimation of direction of departure (DOD), direction of arrival (DOA) and polarization parameters for bistatic MIMO radars. A signal model of polarimetric MIMO radar is developed, and the multi-parameter estimation algorithm for target localization is described by exploiting polarization array processing and the invariance property in both transmitter array and receiver array. By making use of polarization diversity techniques, the proposed method has advantages over traditional localization algorithms for bistatic MIMO radar. Simulations show that the performance of DOD and DOA estimation is greatly enhanced when different states of polarization of echoes is fully utilized. Especially, when two targets are closely spaced and cannot be well separated in spatial domain, the estimation resolution of traditional algorithms will be greatly degraded. While the proposed algorithm can work well and achieve high-resolution identification and accurate localization of multiple targets.

关键词:

MIMO radar, joint parameter estimation, polarization, direction of arrival, direction of departure

Abstract:

In the paper, polarization-sensitive array is exploited at the receiver of multiple input multiple output (MIMO) radar system, a novel method is proposed for joint estimation of direction of departure (DOD), direction of arrival (DOA) and polarization parameters for bistatic MIMO radars. A signal model of polarimetric MIMO radar is developed, and the multi-parameter estimation algorithm for target localization is described by exploiting polarization array processing and the invariance property in both transmitter array and receiver array. By making use of polarization diversity techniques, the proposed method has advantages over traditional localization algorithms for bistatic MIMO radar. Simulations show that the performance of DOD and DOA estimation is greatly enhanced when different states of polarization of echoes is fully utilized. Especially, when two targets are closely spaced and cannot be well separated in spatial domain, the estimation resolution of traditional algorithms will be greatly degraded. While the proposed algorithm can work well and achieve high-resolution identification and accurate localization of multiple targets.

Key words:

MIMO radar, joint parameter estimation, polarization, direction of arrival, direction of departure