6533b85cfe1ef96bd12bca4d

RESEARCH PRODUCT

Improved GNSS positioning exploiting a vehicular P2P infrastructure

Letizia Lo PrestiMarco RaoJaron Samson

subject

EquationsExploitSatellitesbusiness.industryGNSS vehicularReliability (computer networking)Real-time computingIndexesKalman filterPeer-to-peerReliabilitycomputer.software_genreReceiversGNSS vehicular; Equations; Indexes; Kalman filters; Mathematical model; Receivers; Reliability; SatellitesConsistency (database systems)Mathematical modelGeographyGNSS applicationsP2P localization Kalman filtering GNSS WAVESatellite navigationMobile telephonybusinessKalman filterscomputerSimulation

description

This paper considers the possibility to exploit external altitude measurements to improve the performance of a Kalman based GNSS receiver. The altitude measurements are provided by means of a peer to peer network, that is supposed to be based on the evolution of the 802.11 standard for the vehicular environment, namely the WAVE (802.11p). The performance of such a system are investigated for different characteristics of the aiding measurement and for a different number and disposals of the aiding peers. The aiding measurement is obtained starting from the altitude measurements that the other peers in the network send to the aided user. The experiments highlight the need for a parameter that points out the effectiveness and the consistency of the computed aiding measurement, taking into account many parameters such as the number of peers, their distribution in the user cluster and the number of satellites available for the solution computation. To this purpose, a reliability index is defined and the performance of a system that relies on this index are shown.

yearjournalcountryeditionlanguage
2010-09-012010 5th Advanced Satellite Multimedia Systems Conference and the 11th Signal Processing for Space Communications Workshop
https://doi.org/10.1109/asms-spsc.2010.5586924