Cooperative Localization Via Semidefinite Programming for Transmitters and Reflectors

This letter proposes a cooperative localization framework for multiple transmitters and reflectors utilizing time difference of arrival (TDOA) measurements. An efficient cooperative semidefinite programming (CSDP) solution is also developed to determine the positions of the transmitters and reflectors jointly. The theoretical analysis shows that the performance of the CSDP solution can attain the Cramér-Rao Lower Bound (CRLB) accuracy. Simulation results further indicate that the CSDP solution maintains robust performance both across the entire varying noise region and in scenarios with sparse deployments of transmitters and reflectors.