1997•Proceedings of the 10th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1997)Requires access
On the Impact of RF Front-end Group Delay Variations on GLONASS Pseudorange Accuracy
Tobias Felhauer
Open publisher page 13 citations
Abstract
In this Paper, first of all the impact of ditTerent group
delay characteristics on the 1s GLONASS
interchannel delay bias errors is analysed and
discussed by theoretical analysis as well as by
computer simulations. The result of these analysis is a
quite simple, generic and novel algorithm which can
be applied to evaluate the impact of any measured
group delay characteristic on the GLONASS
pseudorange accuracy. Furthermore it is shown that -just
as in the ease of mukipath - by redueing the
m-relator spacing within the Delay Look Loop
(narrow correlating) the sensitivity against group delay
variations ean be signitieantly redueed. Finally, the
proposed evaluation algorithm is applied using typical
group delay characteristics measured at the GLONASS
RF front-end of the combined GPS/GLONASS
receiver module ASN-22 developed by Dairnler-Benz
Aerospaee, Ulm Germany.