Mathematics – Probability
Scientific paper
Mar 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005assp.conf..657d&link_type=abstract
IEEE International Conference on Acoustics, Speech, and Signal Processing, 2005. Proceedings. (ICASSP '05). 18-23 March 2005. Vo
Mathematics
Probability
Scientific paper
Radio astronomical observations of important L-band spectral lines must often be made at frequencies allocated to pulsed air surveillance radar in the 1215-1350 MHz band. Such pulsed interference must be dealt with at the Green Bank Telescope (GBT) and other observatories by "blanking" to remove corrupted data. This paper presents a new algorithm which improves aircraft echo detection by using a Kalman tracker to follow the path of a sequence of echoes. This Bayesian method enables more sensitive weak echo detection. Track information is used to form a spatial prior probability distribution for the presence of echoes in the next antenna sweep. A lower detection threshold is used in higher probability regions to pull out low level pulses without increasing the overall probability of false alarm detection.
Dong Weizhen
Fisher Richard J.
Jeffs Brian D.
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