Patent ID: 7551138

Claim:
A method of determining a geolocation of a non-cooperative target, the method comprising: acquiring with a first collector a first signal measurement corresponding to a signal emitted from an emitter on the target, the first collector being capable of acquiring each and every one of a first angle of arrival, a first direction of arrival, a first target range, and a first target position; forming a first measurement matrix utilizing the first acquired signal measurement; applying the measurement matrix to a recursive filter; acquiring with a second collector a second signal measurement corresponding to a signal emitted from the emitter on the target, the second collector being capable of acquiring each and every one of a range, a second target position, and a vernier angle; forming a second measurement matrix utilizing the second acquired signal measurement; and applying the second measurement matrix to the recursive filter to determine the geolocation of the target without receiving or requiring a precise location or orientation of the target from a communication transmitted from the target.