Maximum likelihood multipath estimation in comparison with conventional delay lock loops
(2006) International Technical Meeting of the Institute of Navigation Satellite Division, (ION GNSS), 2006- Abstract
- The implementation of the maximum likelihood estimator
for the time-delay estimation problem is practically
intractable for navigation signals due to its complexity,
especially when due to multipath reception several
superimposed replica are taken into account. Recently it
has been shown that signal compression techniques can
overcome this problem, as the maximum likelihood
estimator can be formulated efficiently upon a reduced
data set of much smaller size compared to the original
data, where the reduced data set forms a sufficient statistic
for the estimated signal parameters. This paper focuses on
the formulation of such a signal... (More) - The implementation of the maximum likelihood estimator
for the time-delay estimation problem is practically
intractable for navigation signals due to its complexity,
especially when due to multipath reception several
superimposed replica are taken into account. Recently it
has been shown that signal compression techniques can
overcome this problem, as the maximum likelihood
estimator can be formulated efficiently upon a reduced
data set of much smaller size compared to the original
data, where the reduced data set forms a sufficient statistic
for the estimated signal parameters. This paper focuses on
the formulation of such a signal compression based
estimator. Furthermore the integration of the estimator
into navigation receivers is addressed, in particular by
considering the delay lock loop architecture that is
employed within conventional navigation receivers. A
novel approach for integrating the efficient maximum
likelihood estimator into a generic tracking loop is
proposed. The performance of the proposed method is
assessed by computer simulations. The results show that
the conventional delay lock loop is outperformed with respect to noise performance as well as with respect to the
multipath bias. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/3731442
- author
- Lentmaier, Michael LU and Krach, Bernhard
- organization
- publishing date
- 2006
- type
- Contribution to conference
- publication status
- published
- subject
- keywords
- GNSS, multipath mitigation, delay lock loop, DLL
- conference name
- International Technical Meeting of the Institute of Navigation Satellite Division, (ION GNSS), 2006
- conference location
- Forth Worth, TX, United States
- conference dates
- 2006-09-25 - 2006-09-26
- external identifiers
-
- scopus:34247151671
- language
- English
- LU publication?
- no
- id
- 94ff4aff-abed-4ea8-ae34-d88b96d9c8f8 (old id 3731442)
- alternative location
- http://elib.dlr.de/44211/1/ION06Submission-LentmaierKrach.pdf
- date added to LUP
- 2016-04-04 13:45:53
- date last changed
- 2022-01-30 00:51:15
@misc{94ff4aff-abed-4ea8-ae34-d88b96d9c8f8,
abstract = {{The implementation of the maximum likelihood estimator<br/><br>
for the time-delay estimation problem is practically<br/><br>
intractable for navigation signals due to its complexity,<br/><br>
especially when due to multipath reception several<br/><br>
superimposed replica are taken into account. Recently it<br/><br>
has been shown that signal compression techniques can<br/><br>
overcome this problem, as the maximum likelihood<br/><br>
estimator can be formulated efficiently upon a reduced<br/><br>
data set of much smaller size compared to the original<br/><br>
data, where the reduced data set forms a sufficient statistic<br/><br>
for the estimated signal parameters. This paper focuses on<br/><br>
the formulation of such a signal compression based<br/><br>
estimator. Furthermore the integration of the estimator<br/><br>
into navigation receivers is addressed, in particular by<br/><br>
considering the delay lock loop architecture that is<br/><br>
employed within conventional navigation receivers. A<br/><br>
novel approach for integrating the efficient maximum<br/><br>
likelihood estimator into a generic tracking loop is<br/><br>
proposed. The performance of the proposed method is<br/><br>
assessed by computer simulations. The results show that<br/><br>
the conventional delay lock loop is outperformed with respect to noise performance as well as with respect to the<br/><br>
multipath bias.}},
author = {{Lentmaier, Michael and Krach, Bernhard}},
keywords = {{GNSS; multipath mitigation; delay lock loop; DLL}},
language = {{eng}},
title = {{Maximum likelihood multipath estimation in comparison with conventional delay lock loops}},
url = {{http://elib.dlr.de/44211/1/ION06Submission-LentmaierKrach.pdf}},
year = {{2006}},
}