Ionospheric delay is a major problem in the process of ambiguity resolution over medium and long baselines that the time consuming is barely satisfactory and the success rate is not high. This paper proposes a new ambiguity resolution method which combines the RNSS and RDSS observations of BeiDou to reduce the ionospheric delay. Firstly, two optical virtual observations with small total noise level and ionospheric delay coefficient are selected by analyzing the RNSS and RDSS combination signals. Then, the NL integers of GEO are solved using geometry-independent and ionosphere-free model which are formed by new virtual observations. Finally, the NL integers of non-GEO are solved with known GEO NL integers. This method is verified using simulated data. Test results show that, the new method has higher success rate and less consuming time compared with traditional method.
ZHAO Jiaojiao
,
QU Jianghua
,
YUAN Hong
. A New Ambiguity Resolution Method Using Combined RNSS-RDSS of BeiDou[J]. Acta Geodaetica et Cartographica Sinica, 2016
, 45(4)
: 404
-410
.
DOI: 10.11947/j.AGCS.2016.20150164
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