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Modified Cramér-Rao lower bound for TOA and symbol width estimation. An application to search and rescue signals

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 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.
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https://hal.archives-ouvertes.fr/hal-01148626
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Submitted on : Tuesday, May 5, 2015 - 8:30:54 AM
Last modification on : Friday, July 31, 2020 - 10:44:09 AM
Document(s) archivé(s) le : Monday, September 14, 2015 - 6:47:21 PM

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  • HAL Id : hal-01148626, version 1
  • OATAO : 12728

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Victor Bissoli Nicolau, Martial Coulon, Yoann Grégoire, Thibaud Calmettes, Jean-Yves Tourneret. Modified Cramér-Rao lower bound for TOA and symbol width estimation. An application to search and rescue signals. IEEE International Conference on Acoustics, Speech, and Signal Processing - ICASSP 2013, May 2013, Vancouver, Canada. pp. 5160-5164. ⟨hal-01148626⟩

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