Antreich, Felix and Nossek, Josef A. and Seco, Gonzalo and Swindlehurst, A. Lee (2007) THE EXTENDED INVARIANCE PRINCIPLE APPLIED TO JOINT TIME-DELAY,FREQUENCY, AND DOA ESTIMATION. In: Proceedings of IEEE ICASSP 2008. IEEE ICASSP 2008, 2008-04-30 2008-04-04, Las Vegas.
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Abstract
This paper deals with the joint estimation of temporal (timedelay, Doppler frequency) and spatial (direction-of-arrival) parameters of several replicas of a known signal in an unknown spatially correlated field. Unstructured and structured models have been proposed in the literature. The former suffers from a severe performance degradation in some scenarios, whereas the latter involves a huge complexity. It is shown how the extended invariance principle (EXIP) can be applied to obtain estimates with the quality of those of the structured model, but with the complexity of the unstructured one. We present a method to improve the quality of the time-delay and Doppler estimates obtained with an unstructured spatial model when an estimate of the DOAs is available. Exemplarily, simulation results for time-delay estimation for GPS are included and confirm that our proposal approaches the Cramer-Rao lower bound (CRLB) of the structured model even when suboptimal DOA estimates obtained by ESPRIT are introduced.
Item URL in elib: | https://elib.dlr.de/53847/ | |||||||||||||||
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Document Type: | Conference or Workshop Item (Paper, Poster) | |||||||||||||||
Title: | THE EXTENDED INVARIANCE PRINCIPLE APPLIED TO JOINT TIME-DELAY,FREQUENCY, AND DOA ESTIMATION | |||||||||||||||
Authors: |
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Date: | November 2007 | |||||||||||||||
Journal or Publication Title: | Proceedings of IEEE ICASSP 2008 | |||||||||||||||
Refereed publication: | Yes | |||||||||||||||
Open Access: | No | |||||||||||||||
Gold Open Access: | No | |||||||||||||||
In SCOPUS: | No | |||||||||||||||
In ISI Web of Science: | No | |||||||||||||||
Status: | Published | |||||||||||||||
Keywords: | Array signal processing, parameter estimation, direction of arrival estimation, time synchronization, Global Positioning System | |||||||||||||||
Event Title: | IEEE ICASSP 2008 | |||||||||||||||
Event Location: | Las Vegas | |||||||||||||||
Event Type: | international Conference | |||||||||||||||
Event Dates: | 2008-04-30 2008-04-04 | |||||||||||||||
Organizer: | IEEE Signal Processing Society | |||||||||||||||
HGF - Research field: | other | |||||||||||||||
HGF - Program: | other | |||||||||||||||
HGF - Program Themes: | other | |||||||||||||||
DLR - Research area: | no assignment | |||||||||||||||
DLR - Program: | no assignment | |||||||||||||||
DLR - Research theme (Project): | no assignment | |||||||||||||||
Location: | Oberpfaffenhofen | |||||||||||||||
Institutes and Institutions: | Institute of Communication and Navigation > Navigation | |||||||||||||||
Deposited By: | Antreich, Felix | |||||||||||||||
Deposited On: | 07 Apr 2008 | |||||||||||||||
Last Modified: | 12 Dec 2013 20:30 |
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