Land Mobile GNSS Availability and Multipath Evaluation Tool

Multipath Propagation, Characterization and Modeling in GNSS

On land mobile satellite navigation performance degraded by multipath reception

In this paper simulation results of DLR’s ultra-wideband land mobile satellite (LMS) multipath channel model are presented. The goal is the evaluation of GNSS performance in the rail environment. For this safety of life (SOL) application an urban railway was identified as the most critical scenario. The channel model is based on a measurement campaign of the land mobile multipath channel perfor...

Land Mobile Satellite Navigation - Characteristics of the Multipath Channel

In this first results of the 2002 measurement campaign are discussed, investigating the environment of satellite navigation receivers for land mobile applications, where reflections from e.g. buildings decrease the accuracy of the positioning.

GNSS Multipath Error Reduction in Harsh Environments

The performance of code delay and carrier phase estimation of a GNSS signal propagated in an urban or indoor environment is highly degraded by multipath when the conventional multipath mitigation techniques such as narrow correlator and double delta correlator are applied. These conventional techniques rely on the value of the delay corresponding to the peak of the autocorrelation function. In ...

An Advanced Gnss Code Multipath Detection and Estimation Algorithm

A novel maximum likelihood-based range estimation algorithm is designed to provide robustness to multipath, which is recognized as a dominant error source in DS-CDMA based navigation systems. The detection-estimation problem is jointly solved to sequentially estimate the parameters of each individual multipath component and predict the existence of a next possible component. A comparison betwee...