近场目标方位和距离估计的克拉美-罗界研究

doi:10.11999/JEIT150578

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Abstract

In view of the existing CRB (Cramér-Rao Bound) for near-field single source is based on the uniform linear array, and analyzes less fully the CRB's characteristics and the influence factors of specific. In this paper, non-matrix, closed-form expression of the deterministic CRB for the near-field narrow band model is deduced based on Fisher information matrix, Schur complement and Jacobi transform with non-uniform linear array. The behavior of the performance with respect to some features of interest are discussed, namely, the array geometry, the array aperture, the thinned factor, the target signal frequency and the signal to noise ratio. Through the reasonable array design scheme, the direction and range of the target are both estimated. The Monte-Carlo simulation results validate the effectiveness of the theoretical analysis and the conclusion.

Key words： Signal processing Cramér-Rao bound Direction and range estimation Near field Source localization Non-uniform linear array Thinned factor

Received: 15 May 2015 Published: 14 January 2016

PACS:

TN911.7

Fund:

The National Natural Science Foundation of China (61201320), The Fundamental Research Funds for the Central Universities (3102014JCQ01052), China Postdoctoral Science Foundation (2014M552489), Shanghai Aerospace Science and Technology Innovation Fund (SAST201455)

Corresponding Authors: Bao Tao E-mail: baotao@nwpu.edu.cn

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	BAO Tao
	ZHOU Deyun
	LI Lixin
	HU Chufeng

Cite this article:

BAO Tao,ZHOU Deyun,LI Lixin等. Cramér-Rao Bound for Near-field Source Localization[J]. JEIT, 2016, 38(3): 758-762.

URL:

http://jeit.ie.ac.cn/EN/10.11999/JEIT150578 OR http://jeit.ie.ac.cn/EN/Y2016/V38/I3/758

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