A Study on the Improvement of Near-Real Time GPS Phase Data Processing Algorithm

Details A Study on the Improvement of Near-Real Time GPS Phase Data Processing Algorithm A Study on the Improvement of Near-Real Time GPS Phase Data Processing Algorithm

Jun 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004jass...21..129s&link_type=abstract

Journal of Astronomy and Space Sciences. Vol. 21, no. 2, p.129-140

Astronomy and Astrophysics

Astronomy

L1 Carrier Phase, Low-Cost Gps Receiver, Eextended Kalman Filter

Scientific paper

KAO(Korea Astronomy Observatory) GPS group has developed an iRTK system as a near-real time positioning system using GPS carrier phase data. We focused on improving the accuracy of positioning through the updated capability of data processing of KAO's iRTK system using low-cost L1 carrier phase receiver. The accuracy of a positioning was demonstrated by Extended Kalman filter. Experiments were accomplished using from 30m to 20km baselines. Within 10km, the positioning accuracy was improved by approximately 50-70% to the previous study using one minute observable data. However, it took two minutes to obtain 1m level positioning accuracy at 20km point. We expect that the developed iRTK system can be applied to the various fields of GPS in near-real time positioning.

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