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RISSurveying Network Design and Adjustment for Ballastless Track HSR: Case Study with the First HSR in China
Publisher: American Society of Civil Engineers
Global Navigation Satellite System Ambiguity Resolution with Constraints from Normal Equations
Publisher: American Society of Civil Engineers
Abstract: Carrier phase ambiguity resolution is the key to precise positioning with a global navigation satellite system (GNSS); therefore, quite a few ambiguity resolution methods have been developed in the past two decades. In ...
Can Long-Range Single-Baseline RTK Provide Service in Shanghai Comparable to Network RTK?
Publisher: ASCE
Abstract: Traditionally, GPS real-time kinematic (RTK) technique can provide precise positioning for short baselines, and network-based RTK (NRTK) is much more effective than the single-baseline RTK (SRTK) stemming from its capability ...
GNSS Elevation-Dependent Stochastic Modeling and Its Impacts on the Statistic Testing
Publisher: American Society of Civil Engineers
Abstract: Only the correct stochastic model can be applied to derive the optimal parameter estimation and then realize the precision global navigation satellite system (GNSS) positioning. The key for refining the GNSS stochastic ...
Extension of Internal Reliability Analysis Regarding Separability Analysis
Publisher: American Society of Civil Engineers
Algorithm and Assessment of Ambiguity-Fixed PPP with BeiDou Observations and Regional Network Augmentation
Publisher: ASCE
Abstract: In precise point positioning (PPP) applications, uncalibrated phase delays (UPD) are applied to retrieve the ambiguity integers for achieving precise solutions over a short period. Also, the atmospheric corrections obtained ...