Passive Multistatic Localization with the Prior Receiving Beamwidth Constraint

This paper investigates the target localization using bistatic range measurements with multiple transmitters and one passive receiver. We introduce an angular constraint to incorporate the valuable information from the main-lobe beamwidth of the receiving antenna into the passive multistatic localization problem. Then, a specific Semidefinite Relaxation (SDR) based algorithm is proposed to tackle this quadratically constrained quadratic programming (QCQP) problem. Simulation results illustrate that the proposed algorithm effectively leverages the prior main-lobe beamwidth information, resulting in lower estimation errors compared to alternative methods.