Integer Ambiguity Resolution of Network Real Time Kinematic using Geometric Constraint(ICSANE 2012 (International Conference on Space, Aeronautical and Navigational Electronics))

概要

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In many land transportation field Global Navigation Satellite System (GNSS) is used widely but utilization of only single receiver cannot meet the accuracy requirement to recognize lane that the car occupied on the road. Relative positioning works under the principle of using two GNSS receivers to acquire measurements of same GNSS satellite simultaneously. If the distance between the two receivers is short the measurements share common errors but if the distance increases the measurements don't share common errors. Many researchers have used multiple reference stations to overcome the distance limitation. The network real time kinematic (NRTK) methods have been raised to overcome the limitation. On performing NRTK to resolve the integer ambiguities of differenced measurement between reference stations is essential. In this paper a new method is introduced to resolve the integer ambiguities of double difference measurements of two reference station in the same network. The geometric constraint of reference stations makes it easy to resolve the integer ambiguities. In this paper the constraint condition is explained and the results of performance increase using real measurements are shown.
2012-10-03