Sensors 2015, 15(12), 31442-31452; https://doi.org/10.3390/s151229865
Multiple-Parameter Estimation Method Based on Spatio-Temporal 2-D Processing for Bistatic MIMO Radar
1
School of Electronics and Information, Northwestern Polytechnical University, Xi’an 710072, China
2
Air and Missile Defense College, Air Force Engineering University, Xi’an 710051, China
*
Author to whom correspondence should be addressed.
Academic Editor: Assefa M. Melesse
Received: 27 August 2015 / Revised: 27 November 2015 / Accepted: 7 December 2015 / Published: 14 December 2015
(This article belongs to the Section Remote Sensors)
Abstract
A novel spatio-temporal 2-dimensional (2-D) processing method that can jointly estimate the transmitting-receiving azimuth and Doppler frequency for bistatic multiple-input multiple-output (MIMO) radar in the presence of spatial colored noise and an unknown number of targets is proposed. In the temporal domain, the cross-correlation of the matched filters’ outputs for different time-delay sampling is used to eliminate the spatial colored noise. In the spatial domain, the proposed method uses a diagonal loading method and subspace theory to estimate the direction of departure (DOD) and direction of arrival (DOA), and the Doppler frequency can then be accurately estimated through the estimation of the DOD and DOA. By skipping target number estimation and the eigenvalue decomposition (EVD) of the data covariance matrix estimation and only requiring a one-dimensional search, the proposed method achieves low computational complexity. Furthermore, the proposed method is suitable for bistatic MIMO radar with an arbitrary transmitted and received geometrical configuration. The correction and efficiency of the proposed method are verified by computer simulation results. View Full-TextKeywords:
spatio-temporal 2-D processing; bistatic MIMO radar; transmitting-receiving azimuth; Doppler frequency
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Yang, S.; Li, Y.; Zhang, K.; Tang, W. Multiple-Parameter Estimation Method Based on Spatio-Temporal 2-D Processing for Bistatic MIMO Radar. Sensors 2015, 15, 31442-31452.