A semidefinite relaxation approach to the geolocation of two unknown co-channel emitters by a cluster of formation-flying satellites using both TDOA and FDOA measurements

Kehu Yang; Lizhong Jiang; Anthony Man-Cho So

ICASSP 2016accepted0 citations

A semidefinite relaxation approach to the geolocation of two unknown co-channel emitters by a cluster of formation-flying satellites using both TDOA and FDOA measurements

Kehu Yang, Lizhong Jiang, Anthony Man-Cho So

Abstract

We consider the problem of geolocating two unknown co-channel emitters by a cluster of formation-flying satellites using both time difference of arrival (TDOA) and frequency difference of arrival (FDOA) measurements. As the association between the TDOA/FDOA measurements obtained by each pair of satellites and the corresponding emitters is typically not known, the emitter-measurement association and the emitters' locations need to be jointly estimated. In this paper, we first formulate the joint estimation problem as a mixed integer nonlinear optimization problem. Then, we propose a semidefinite relaxation-based approach to tackle the problem and demonstrate its efficacy via simulations.

BibTeX

@inproceedings{icassp2016_asemidefiniterel,
  title = {A semidefinite relaxation approach to the geolocation of two unknown co-channel emitters by a cluster of formation-flying satellites using both TDOA and FDOA measurements},
  author = {Kehu Yang and Lizhong Jiang and Anthony Man-Cho So},
  booktitle = {ICASSP 2016},
  year = {2016}
}