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TIME-DELAY ESTIMATION APPLYING THE EXTENDED INVARIANCE PRINCIPLE WITH A POLYNOMIAL ROOTING APPROACH

Antreich, Felix and Nossek, Josef A. and Seco, Gonzalo and Swindlehurst, A. Lee (2009) TIME-DELAY ESTIMATION APPLYING THE EXTENDED INVARIANCE PRINCIPLE WITH A POLYNOMIAL ROOTING APPROACH. In: ITG/ IEEE Workshop on Smart Antennas (WSA) 2009. ITG/ IEEE Workshop on Smart Antennas (WSA) 2009, 2009-02-17 - 2009-02-18, Berlin, Germany.

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Abstract

This work treats the problem of joint estimation of time-delay and spatial (direction-of-arrival, DOA) parameters of several replicas of a known signal in an unknown spatially correlated field. Unstructured and structured data models have been proposed for maximum likelihood (ML) estimators, whereas the former suffers from a severe performance degradation in some scenarios, and the latter involves huge complexity. In this work 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 much lower complexity than directly utilizing the structured model. We present how to improve the quality of the time-delay estimates obtained with an unstructured spatial model by introducing DOA estimates. DOA estimates are derived either directly applying EXIP with a polynomial rooting approach or with decoupled estimators for temporal and spatial parameters applying Unitary ESPRIT. Both methods are compared with respect to estimation accuracy and complexity. Exemplarily, simulation results for time-delay estimation for GPS (Global Positioning System) are shown and confirm that our proposals both approach the Cramer-Rao lower bound (CRLB) of the structured model.

Item URL in elib:https://elib.dlr.de/58131/
Document Type:Conference or Workshop Item (Speech, Paper)
Title:TIME-DELAY ESTIMATION APPLYING THE EXTENDED INVARIANCE PRINCIPLE WITH A POLYNOMIAL ROOTING APPROACH
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Antreich, FelixUNSPECIFIEDUNSPECIFIED
Nossek, Josef A.Munich University of Technology (TUM)UNSPECIFIED
Seco, GonzaloUniversitat Autonoma de Barcelona (UAB)UNSPECIFIED
Swindlehurst, A. LeeUniversity of California Irvine (UCI)UNSPECIFIED
Date:7 February 2009
Journal or Publication Title:ITG/ IEEE Workshop on Smart Antennas (WSA) 2009
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Parameter estimation, maximum likelihood, GNSS
Event Title:ITG/ IEEE Workshop on Smart Antennas (WSA) 2009
Event Location:Berlin, Germany
Event Type:international Conference
Event Dates:2009-02-17 - 2009-02-18
Organizer:ITG
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W KN - Kommunikation/Navigation
DLR - Research area:Space
DLR - Program:W KN - Kommunikation/Navigation
DLR - Research theme (Project):W - Vorhaben GNSS2/Neue Dienste und Produkte (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Communication and Navigation > Navigation
Deposited By: Antreich, Felix
Deposited On:02 Mar 2009
Last Modified:12 Dec 2013 20:36

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