Skip to Main content Skip to Navigation
Conference papers

New Solutions to Reduce the Time-To-CED and to Improve the CED Robustness of the Galileo I/NAV Message

Abstract : In the current framework of Galileo and thanks to the flexibility of the I/NAV message, introducing new pages in order to propose an optimization of the E1-B Galileo signal has been proposed [1]. This optimization process pursues two different objectives. The first objective aims to reduce the Time To First Fix (TTFF), achieved by shortening the time to retrieve the Clock and Ephemerides Data (CED). The second objective aims to improve the resilience and robustness of the CED, particularly under hostile environments. Under the backward compatibility precondition, new outer channel error correction solutions for Galileo I/NAV are proposed in this paper. Especially, a new family of codes called Lowest Density Maximum Distance Separable codes (LD-MDS) is proposed to be used in this paper, thus in GNSS context. This family of codes, along with an enhanced performance decoding method based on the use of a soft serial iterative decoding, provides an optimal solution in order to reduce the TTFF as well as to improve the robustness of the CED.
Complete list of metadatas

Cited literature [11 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/hal-02603519
Contributor : Open Archive Toulouse Archive Ouverte (oatao) <>
Submitted on : Saturday, May 16, 2020 - 8:49:25 AM
Last modification on : Friday, May 22, 2020 - 1:22:30 AM

File

Ortega-Espluga_22323.pdf
Files produced by the author(s)

Identifiers

  • HAL Id : hal-02603519, version 1
  • OATAO : 22323

Citation

Lorenzo Ortega Espluga, Charly Poulliat, Marie-Laure Boucheret, Marion Aubault, Hanaa Al Bitar. New Solutions to Reduce the Time-To-CED and to Improve the CED Robustness of the Galileo I/NAV Message. IEEE/ION Position, Location and Navigation Symposium (PLANS 2018), Apr 2018, Monterey, California, United States. pp.1-10. ⟨hal-02603519⟩

Share

Metrics

Record views

10

Files downloads

3