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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

Citation Author(s):
Lizhong Jiang, Anthony Man-Cho So
Submitted by:
Kehu Yang
Last updated:
23 March 2016 - 8:40pm
Document Type:
Presentation Slides
Document Year:
2016
Event:
Presenters:
Kehu Yang
Paper Code:
3735
 

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.

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