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Two Methods of Spectral Estimation for SARSAT Signals

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2 Author(s)
Casas, E.F. ; McMaster University ; Carter, C.R.

Search and rescue satellite aided tracking (SARSAT) depends on the processing of emergency locator transmitter (ELT) signals which are received by a satellite in low polar orbit. Since the signal from a distressed vehicle is normally immersed in a background of other ELT signals (false alarms), interference, and noise, different methods of spectral estimation can provide advantages in estimating carrier frequency. A comparison between average spectrum and minimum spectrum for several real signals is provided here.

Published in:

Aerospace and Electronic Systems, IEEE Transactions on  (Volume:AES-21 ,  Issue: 4 )