Title :
Barankin Bounds for Target Localization by MIMO Radars
Author :
Tabrikian, Joseph
Author_Institution :
Dept. of Electr. & Comput. Eng., Ben-Gurion Univ. of the Negev, Beer-Sheva
Abstract :
Multiple-input multiple-output (MIMO) radar/sonar systems transmit signals coded in time and space domains and have several advantages upon conventional systems. In this paper, the Barankin bound on target localization errors is used for analysis of the threshold signal-to-noise ratio (SNR) of MIMO radar/sonar systems. It is shown that the threshold SNR of MIMO systems with spatially orthogonal transmit signals, is significantly lower than with coherent transmit signals. Orthogonal signal transmission results in lower threshold SNR, because of the lower sidelobes in the likelihood function. The lower sidelobes are achieved, since MIMO configuration allows to process the signal in both transmit and receive modes. Simulation results show that the threshold SNR obtained by orthogonal signal transmission is lower by more than 10 dB compared to coherent signal transmission
Keywords :
MIMO systems; array signal processing; matrix algebra; radar signal processing; sonar; Barankin bounds; MIMO radar; SNR; multiple-input multiple-output radar; orthogonal signal transmission; signal-to-noise ratio; sonar systems; target localization; transmit signals coded; MIMO; Object detection; Sensor arrays; Sensor phenomena and characterization; Signal processing; Signal to noise ratio; Sonar; Spaceborne radar; Spatial resolution; Transmitters;
Conference_Titel :
Sensor Array and Multichannel Processing, 2006. Fourth IEEE Workshop on
Conference_Location :
Waltham, MA
Print_ISBN :
1-4244-0308-1
DOI :
10.1109/SAM.2006.1706137
