TY - GEN
T1 - Waveform-agile sensing for range and DoA estimation in MIMO radars
AU - Manjunath, Bhavana B.
AU - Zhang, Jun Jason
AU - Papandreou-Suppappola, Antonia
AU - Morrell, Darryl
PY - 2009
Y1 - 2009
N2 - We propose an agile sensing algorithm to optimally select the transmission waveform of a multiple-input, multiple-output (MIMO) radar system in order to improve target localization. Specifically, we first derive the Cramèr-Rao lower bound (CRLB) for the joint estimation of the antenna reflection coefficients and the range and direction-of-arrival of a stationary target using MIMO radar with colocated antennas. The resulting CRLB, that is a function of the transmitted waveform, is then compared to the estimation performance of a maximum-likelihood estimator. We configure waveform parameters to minimize the trace of the predicted error covariance by assuming that the covariance of the observation noise is approximated by the CRLB for high signal-to-noise ratios. In particular, we optimally select the duration and phase function parameters of generalized frequency-modulated chirps to minimize the estimation mean-squared error under constraints of fixed transmission energy and constant time-bandwidth product.
AB - We propose an agile sensing algorithm to optimally select the transmission waveform of a multiple-input, multiple-output (MIMO) radar system in order to improve target localization. Specifically, we first derive the Cramèr-Rao lower bound (CRLB) for the joint estimation of the antenna reflection coefficients and the range and direction-of-arrival of a stationary target using MIMO radar with colocated antennas. The resulting CRLB, that is a function of the transmitted waveform, is then compared to the estimation performance of a maximum-likelihood estimator. We configure waveform parameters to minimize the trace of the predicted error covariance by assuming that the covariance of the observation noise is approximated by the CRLB for high signal-to-noise ratios. In particular, we optimally select the duration and phase function parameters of generalized frequency-modulated chirps to minimize the estimation mean-squared error under constraints of fixed transmission energy and constant time-bandwidth product.
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U2 - 10.1109/WDDC.2009.4800334
DO - 10.1109/WDDC.2009.4800334
M3 - Conference contribution
AN - SCOPUS:64849115665
SN - 9781424429714
T3 - 2009 International Waveform Diversity and Design Conference Proceedings, WDD 2009
SP - 145
EP - 149
BT - 2009 International Waveform Diversity and Design Conference Proceedings, WDD 2009
T2 - 2009 International Waveform Diversity and Design Conference, WDD 2009
Y2 - 8 February 2009 through 13 February 2009
ER -