WSEAS Transactions on Communications
Print ISSN: 1109-2742, E-ISSN: 2224-2864
Volume 21, 2022
Velocity Estimation of Target in MIMO Radar Environment with Unknown Antenna Locations
Author: P. Palanisamy
Abstract: A new algorithm is formulated for MIMO Radar system where positions of target along with that of the transmitter and receiver antennas are unknown. This algorithm considers a widely separated antenna MIMO setup and can be used when transmitters and receivers are either stationary or moving at a very low velocity. Here, the algorithm estimates the location of target with respect to the location of the first transmitter. The TDOA and AOA available for LOS path between the transmitters and receivers along with the reflection path from the target are utilized here. AOA is used only for initialization of antenna positions and target location. Furthermore, accurate estimation using Davidon-Fletcher-Powell (DFP) Algorithm is performed. The paper introduces a new algorithm to compute velocity of a target. Here, first the FDOA is estimated using a novel approach and then velocity is estimated from the FDOA obtained. The velocity estimator for FDOA given tracks CRLB and FDOA estimation tracks its corresponding CRLB upto -12dB. The algorithm uses target and antenna locations to estimate velocity that can be found out from the algorithm introduced in paper.
Keywords: Target Localization, Velocity Estimation, MIMO Radars, DFP Algorithm, Antenna Positions Estimation
DOI: 10.37394/23204.2022.21.25WSEAS Transactions on Communications, ISSN / E-ISSN: 1109-2742 / 2224-2864, Volume 21, 2022, Art. #25