COMBINED APPLICATION OF SATELLITE AND PULSE-PHASE RADIONAVIGATION SYSTEMS USING INTEGRATED GLONASS/GPS/CHAYKA/LORAN-C EQUIPMENT

摘要

Combined using of satellite and pulse-phase radionavigation systems is considered using integrated equipment designed at the Russian Institute of Radionavigation and Time (RIRT). The equipment uses signals of GLONASS/GPS, terrestrial pulse-phase RNS of the Loran-C and Chayka type with the Eurofix technology, and also MW marine radio beacons with the differential SNS mode. The equipment is designed to improve position accuracy of a mobile object in case of the satellite channel failure. The position accuracy is improved by calibration of the pulse-phase channel through determination of Additional Secondary Factors (ASF) that depend on the propagation conditions, using precise satellite measurements when satellite channels are operational and also for compensation of the quasi-systematic pulse-phase RNS errors when the SNS channel is non-operating. Various ASF models are analyzed and the resulting position determination accuracies are estimated. The relevant experimental data are presented that prove the achieved results. Comparison is given of the presented results and similar reported data.