A new algorithm to reduce AGPS acquisition TTFF

Hanaa Al Bitar-El Natour 1 Michel Monnerat 2 Anne-Christine Escher 1 Christophe Macabiau 1 Marie-Laure Boucheret 3
1 ENAC - Ecole Nationale de l'Aviation Civile
2 ALCATEL ALENIA SPACE - Alcatel Alenia Space
3 ENSEEIHT - Ecole Nationale Supérieure d'Electrotechnique, d'Electronique, d'Informatique, d'Hydraulique et de Télécommunications
Abstract : The dramatic increase of Location Based Services and other location and navigation applications gives rise to a crucial need to improve positioning solutions. Currently, the American GPS is the only operational satellite based positioning system as the European Galileo system will be operational by 2010. This paper only deals with GPS receivers. The Time To First Fix (TTFF) and the sensitivity are the key drivers for their performance evaluation. The TTFF is the time needed for a GPS receiver to provide a first position. The sensitivity is the ability of a GPS receiver to acquire weak signals. For commercial solutions, an efficient receiver is one with reduced TTFF and high sensitivity. But generally, enhancing the sensitivity results in an increased TTFF and vice versa. In this paper, we propose a new algorithm for GPS acquisition which essentially deals with the TTFF.
Document type :
Conference papers
Complete list of metadatas

Cited literature [2 references]  Display  Hide  Download
https://hal-enac.archives-ouvertes.fr/hal-01021774
Contributor : Laurence Porte <>
Submitted on : Wednesday, October 29, 2014 - 5:07:13 PM
Last modification on : Friday, June 14, 2019 - 6:31:06 PM
Long-term archiving on : Friday, January 30, 2015 - 10:05:52 AM

File

142.pdf
Files produced by the author(s)

Identifiers

  • HAL Id : hal-01021774, version 1

Collections

ENAC | TELECOM | TELECOM-SIGNAV | UNIV-TLSE2 | SMS | UNIV-TLSE3

Citation

Hanaa Al Bitar-El Natour, Michel Monnerat, Anne-Christine Escher, Christophe Macabiau, Marie-Laure Boucheret. A new algorithm to reduce AGPS acquisition TTFF. ION NTM 2006, National Technical Meeting of The Institute of Navigation, Jan 2006, Monterey, United States. pp 301 - 311. ⟨hal-01021774⟩

Export

BibTeX TEI DC DCterms EndNote

Share

Metrics

Record views

162

Files downloads

104