DETERMINING A GEOLOCATION SOLUTION OF AN EMITTER ON EARTH BASED ON WEIGHTED LEAST-SQUARES ESTIMATION
摘要
Embodiments provide systems and methods for determining the geolocation of an emitter on earth based on weighted least-squares estimation based on two TDOA and two FDOA measurements, none of which need to be acquired at the same time. The four TDOA and FDOA measurements and the errors in each of the measurements are determined. Weights for the errors in the TDOA and FDOA measurements are determined, and the weights are applied in a weighted errors function. The weights account for the errors in the measurements and the errors in the satellite positions and velocities, and are dependent on the localization geometry. The weighted errors function is minimized to determine the location estimate of the unknown emitter.
申请公布号
EP2142938(A1)
申请公布日期
2010.01.13
申请号
EP20080745645
申请日期
2008.04.11
申请人
GLOWLINK COMMUNICATIONS TECHNOLOGY, INC.
发明人
HO, DOMINIC, K.C.;CHU, JEFFREY, C.;DOWNEY, MICHAEL, L.