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Antreich, Felix and Nossek, Josef A. (2007) Maximum Likelihood Parameter Estimation in a GNSS Receiver. In: ITG VDE WFMN2007. ITG VDE. ITG VDE WFMN2007, 2007-07-03 - 2007-07-05, Chemnitz.
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Abstract
The potential of the SAGE (Space Alternating Generalized Expectation Maximization) algorithm for navigation systems in order to distinguish the line-of-sight signal (LOSS) is to be considered. The SAGE algorithm is a low-complexity generalization of the EM (Expectation-Maximization) algorithm, which iteratively approximates the maximum likelihood estimator (MLE) and has been successfully applied for parameter estimation (relative delay, incident azimuth, incident elevation, Doppler frequency, and complex amplitude of impinging waves) in mobile radio environments. This study discusses a receiver using an antenna array. Whereas we estimate the complex amplitudes, relative delays, Doppler frequencies, and the spatial signature of the impinging waves (incident azimuth and elevation). The results of the performed computer simulations and discussion indicate that the SAGE algorithm has the potential to be a very powerful high resolution method to successfully estimate parameters of impinging waves for navigation systems. SAGE has proven to be a promising method to combat multipath due to its good performance, fast convergence, and low complexity.
| Item URL in elib: | https://elib.dlr.de/50925/ | |||||||||
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| Document Type: | Conference or Workshop Item (Speech, Paper) | |||||||||
| Title: | Maximum Likelihood Parameter Estimation in a GNSS Receiver | |||||||||
| Authors: |
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| Date: | 5 July 2007 | |||||||||
| Journal or Publication Title: | ITG VDE WFMN2007 | |||||||||
| Refereed publication: | Yes | |||||||||
| Open Access: | No | |||||||||
| Gold Open Access: | No | |||||||||
| In SCOPUS: | No | |||||||||
| In ISI Web of Science: | No | |||||||||
| Publisher: | ITG VDE | |||||||||
| Status: | Published | |||||||||
| Keywords: | Maximum Likelihood, GNSS, GPS, Delay Estimation, Array Processing | |||||||||
| Event Title: | ITG VDE WFMN2007 | |||||||||
| Event Location: | Chemnitz | |||||||||
| Event Type: | national Conference | |||||||||
| Event Dates: | 2007-07-03 - 2007-07-05 | |||||||||
| Organizer: | ITG VDE | |||||||||
| 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: | 27 Aug 2007 | |||||||||
| Last Modified: | 12 Dec 2013 20:27 |
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