Localization and Observability of Aircraft via Doppler Shifts

  title={Localization and Observability of Aircraft via Doppler Shifts},
  author={D. C. Torney},
  journal={IEEE Transactions on Aerospace and Electronic Systems},
  • D.C. Torney
  • Published 2007 in
    IEEE Transactions on Aerospace and Electronic…
The linear trajectory of an airplane with constant velocity is obtained from Doppler shifts at stationary sensors, each yielding a corresponding time of closest approach, closest distance, and speed [3, 8]. Based on these inferences and on the sensors' locations, three sensors yield two candidate trajectories, and four sensors yield one - provided that the locations span R2 and R3 respectively: constituting observability for the problem at hand. 
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