Embodiments provide systems and methods for determining the geolocation of an emitter on earth. A solution is obtained from two TDOA measurements that need not be acquired at the same time. A solution is obtained from a TDOA measurement and an FDOA measurement that need not be acquired at the same time...http://www.google.com/patents/US7667640?utm_source=gb-gplus-sharePatent US7667640 - Determining a geolocation solution of an emitter on earth using satellite signals
