TY - JOUR
T1 - Target velocity estimation and antenna placement for MIMO radar with widely separated antennas
AU - He, Qian
AU - Blum, Rick S.
AU - Godrich, Hana
AU - Haimovich, Alexander M.
N1 - Funding Information:
Manuscript received January 26, 2009; revised July 20, 2009. Current version published nulldate. The work of Q. He and R. S. Blum were supported in part by the Air Force Research Laboratory under Agreement FA9550-09-1-0576, in part by the National Science Foundation under Grant CCF-0829958, in part by the U.S. Army Research Office under Grant W911NF-08-1-0449, and in part by the China Scholarship Council. The work of H. Godrich and A. M. Haimovich were supported in part by the U.S. Air Force Office of Scientific Research under agreement FA9550-09-1-0303. The associate editor coordinating the review of this manuscript and approving it for publication was Prof. Jian Li.
PY - 2010/2
Y1 - 2010/2
N2 - This paper studies the velocity estimation performance for multiple-input multiple-output (MIMO) radar with widely spaced antennas. We derive the Cramer Rao bound (CRB) for velocity estimation and study the optimized system/configuration design based on CRB. General results are presented for an extended target with reflectivity varying with look angle. Then detailed analysis is provided for a simplified case, assuming an isotropic scatterer. For given transmitted signals, optimal antenna placement is analyzed in the sense of minimizing the CRB of the velocity estimation error. We show that when all antennas are located at approximately the same distance from the target, symmetrical placement is optimal and the relative position of transmitters and receivers can be arbitrary under the orthogonal received signal assumption. In this case, it is also shown that for MIMO radar with optimal placement, velocity estimation accuracy can be improved by increasing either the signal time duration or the product of the number of transmit and receive antennas.
AB - This paper studies the velocity estimation performance for multiple-input multiple-output (MIMO) radar with widely spaced antennas. We derive the Cramer Rao bound (CRB) for velocity estimation and study the optimized system/configuration design based on CRB. General results are presented for an extended target with reflectivity varying with look angle. Then detailed analysis is provided for a simplified case, assuming an isotropic scatterer. For given transmitted signals, optimal antenna placement is analyzed in the sense of minimizing the CRB of the velocity estimation error. We show that when all antennas are located at approximately the same distance from the target, symmetrical placement is optimal and the relative position of transmitters and receivers can be arbitrary under the orthogonal received signal assumption. In this case, it is also shown that for MIMO radar with optimal placement, velocity estimation accuracy can be improved by increasing either the signal time duration or the product of the number of transmit and receive antennas.
KW - Antenna placement
KW - Cramer Rao bound (CRB)
KW - Maximum-likelihood (ML) estimate
KW - Multiple-input multiple-output (MIMO) radar
KW - Velocity estimation
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U2 - 10.1109/JSTSP.2009.2038974
DO - 10.1109/JSTSP.2009.2038974
M3 - Article
AN - SCOPUS:76249118132
SN - 1932-4553
VL - 4
SP - 79
EP - 100
JO - IEEE Journal on Selected Topics in Signal Processing
JF - IEEE Journal on Selected Topics in Signal Processing
IS - 1
M1 - 5393291
ER -