David Richmond, Lockheed Martin; Tatum Poole, Lockheed Martin
Keywords: Signal Quality, Doppler shift, Manuever Detection, Satellite Position, Pattern of Life
Abstract:
Our team evaluated an approach for degerming the radial velocity and position of a satellite using the downlink signal quality and computing an azimuth and elevation offset bias. This approach is derived in this paper. We conducted a comparison of this approach with the work our team did last year for evaluating the Doppler frequency shift of satellite signals observed by a user on the ground as a function of time to determine the radial velocity and position of the satellite using the Doppler frequency shift. This comparison is presented to include antenna calibration requirements, ability to track unknown objects, and expected accuracy for each of four orbital types: LEO, MEO, GEO and Inclined GEO. The benefits of such information are discussed, to include alternative catalog maintenance sensor, maneuver tip and queue, and anomaly resolution support. Conclusions regarding the two approaches are provided.
Date of Conference: September 17-20, 2019
Track: Space Situational Awareness