Modified cramer-rao lower bounds for TOA and symbol width estimation. An application to search and rescue signals

V. Bissoli Nicolau, M. Coulon, Y. Gregoire, T. Calmettes, J.-Y. Tourneret
2013 2013 IEEE International Conference on Acoustics, Speech and Signal Processing  
OATAO is an open access repository that collects the work of Toulouse researchers and makes it freely available over the web where possible. This is an author-deposited version published in : http://oatao.univ-toulouse.fr/ Eprints ID : 12728 To link to this article : ABSTRACT This paper focuses on the performance of time of arrival estimators for distress beacon signals which are defined by pulses with smooth transitions. These signals are used in the satellite-based search and rescue
more » ... nd rescue Cospas-Sarsat system. We propose a signal model based on sigmoidal functions. Closed-form expressions for the modified Cramér-Rao bounds associated with the parameters of this model are derived. The obtained expressions are easy to interpret since they analytically depend on the system parameters. Simulations conducted on realistic search and rescue signals show good agreement with the theoretical results.
doi:10.1109/icassp.2013.6638646 dblp:conf/icassp/NicolauCGCT13 fatcat:bqk7edxjqfdmphly6q5h4br6ou