A method of passively estimating an emitter's position and velocity using bearings-only without requiring observer acceleration

摘要

A method of estimating emitter range and heading from bearing measurements without requiring observer heading change or observer acceleration during the bearing measurement collection period. Emitter signal characteristics are measured and a set of parameters characterizing a specific emitter as a signal source are generated based on the measured characteristics. Based on the emitter characterization and an emitter-platform association data base, a most probable platform including the emitter is identified and the emitter operating mode and corresponding specific platform are associated with a particular kinematic regime. A platform performance data base is used to (1) derive a speed value based on the kinematic regime, (2) generate emitter bearings based on the measured emitter characteristics, (3) estimate the emitter speed based on the emitter bearings, and (4) determine the emitter range based on a comparison of the continuous speed value with a discrete speed value derived based on the platform performance data base.