This paper investigates the sensitivity to phase synchronization errors through the Hybrid Cramer-Rao Lower Bounds (HCRLB) for joint estimation of target location and velocity in coherent Multiple-Input Multiple-Output (MIMO) radars with distributed antennas. In particular, we derived the HCRLB of range and velocity of a target embedded in Complex Elliptically Symmetric (CES) distributed clutter when the phase error on each receiver and transmitter is modeled as a Gaussian random variable. Closed-form expressions of the HCRLBs are derived and evaluated as a function of the phase error variance.(c) 2022 Elsevier B.V. All rights reserved.
Phase synchronization sensitivity for widely separated MIMO radar in CES disturbance
Neda Rojhani;Maria Greco;Fulvio Gini
2022-01-01
Abstract
This paper investigates the sensitivity to phase synchronization errors through the Hybrid Cramer-Rao Lower Bounds (HCRLB) for joint estimation of target location and velocity in coherent Multiple-Input Multiple-Output (MIMO) radars with distributed antennas. In particular, we derived the HCRLB of range and velocity of a target embedded in Complex Elliptically Symmetric (CES) distributed clutter when the phase error on each receiver and transmitter is modeled as a Gaussian random variable. Closed-form expressions of the HCRLBs are derived and evaluated as a function of the phase error variance.(c) 2022 Elsevier B.V. All rights reserved.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
