Passive Detection and Ranging of a Ground Radar from an Aircraft Using an Extended Kalman Filter.
AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OHIO SCHOOL OF ENGINEERING
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The dynamic equations between a moving aircraft and a stationary ground based radar transmitter are used to design an extended Kalman filter for determining the location of the transmitter with respect to the aircraft. Emphasis is placed on obtaining the range of the transmitter from the aircraft. The only inputs available to the filter are the velocity and attitude of the aircraft and the bearing and elevation angles which the transmitters radar beam makes with the aircraft. The filter is implemented on a digital computer and its performance is observed for various flight paths of the aircraft. The time for the error in the estimate in range to decrease to specified values is tabulated for comparison. Author
- Active and Passive Radar Detection and Equipment