Super-resolution TDOA estimation based on eigenanalysis and sequential quadratic programming
F.X. Ge, D. Shen, Yingning Peng, Victor O. K. Li · IEE Proceedings - Radar Sonar and Navigation · 2004
The authors propose a super-resolution time difference of arrival (TDOA) estimator. In the proposed approach TDOA estimation is first converted into a parameter estimation problem of sinusoidal signals with low-pass envelope. Then TDOAs are estimated based on eigenanalysis and sequential quadratic programming (ESQP). Compared with the conventional approaches, the proposed method is applicable to signals with narrowband spectra. Furthermore, it does not require a priori knowledge of the transmitted signal. Simulation results demonstrate the improved performance of the proposed method when compared to the conventional correlation and MUSIC algorithm.