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THE EXTENDED INVARIANCE PRINCIPLE APPLIED TO JOINT TIME-DELAY,FREQUENCY, AND DOA ESTIMATION

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/
Document Type:Conference or Workshop Item (Paper, Poster)
Title:THE EXTENDED INVARIANCE PRINCIPLE APPLIED TO JOINT TIME-DELAY,FREQUENCY, AND DOA ESTIMATION
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Antreich, FelixUNSPECIFIEDUNSPECIFIED
Nossek, Josef A.Technische Universität München (TUM)UNSPECIFIED
Seco, GonzaloUniversitat Autonoma de Barcelona (UAB)UNSPECIFIED
Swindlehurst, A. LeeUniversity of California, Irvine (UCI)UNSPECIFIED
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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