DocumentCode :
3472183
Title :
Co-located MIMO radar with orthogonal waveform coding : Cramér-Rao Lower Bound
Author :
Boyer, Rémy
Author_Institution :
Laboratiore des Signaux et Syst. (L2S), Univ. Paris-Sud XI (UPS), Gif-sur-Yvette, France
fYear :
2009
fDate :
13-16 Dec. 2009
Firstpage :
149
Lastpage :
152
Abstract :
In this paper, we derive and analyze closed form (nonmatrix) expression of the Cramer-Rao lower bound (CRB) for the location and the velocity of moving targets contaminated by a structured noise (clutter echoes) and a background noise. The context of our analysis is the co-located MIMO (multiple-input multiple-output) radar system, ie., we dispose of multiple antennas in transmission and reception which are close in space. In addition as it is standard in modern MIMO radar, several noncoherent orthogonal waveforms are transmitted. The analysis of the proposed expressions of the CRB allows to better understand the characterisation of the target. In particular, we prove (1) the estimation of the direction parameter and the velocity of the target are cross-linked ; (2) it is more difficult to estimate the target velocity if the radar station is moving ; (3) if the radar station is not moving, the estimation of the target velocity is isotropic ; (4) it is more difficult to accurately localize fixed or slow moving targets and finally, the CRB for a MIMO radar is a lower bound of the one for the SIMO (single-input multiple-output) radar.
Keywords :
MIMO radar; antenna arrays; encoding; radar clutter; Cramer-Rao lower bound; SIMO radar; background noise; closed form expression analysis; clutter echoes; colocated MIMO radar; moving target velocity estimation; multiple antennas; multiple-input multiple-output radar system; noncoherent orthogonal waveforms; orthogonal waveform coding; radar station; single-input multiple-output radar; structured noise; Background noise; Clutter; Doppler radar; MIMO; Radar antennas; Receiving antennas; Reflector antennas; Spaceborne radar; Stochastic processes; Transmitting antennas;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Computational Advances in Multi-Sensor Adaptive Processing (CAMSAP), 2009 3rd IEEE International Workshop on
Conference_Location :
Aruba, Dutch Antilles
Print_ISBN :
978-1-4244-5179-1
Electronic_ISBN :
978-1-4244-5180-7
Type :
conf
DOI :
10.1109/CAMSAP.2009.5413317
Filename :
5413317
Link To Document :
بازگشت