Comparing the Quality Indicators of GPS Carrier Phase Observations
نویسندگان
چکیده
To achieve reliable GPS positioning results a realistic stochastic model for GPS carrier phase observations has to be specified for data processing. In order to develop such a stochastic model, the quality characteristics of GPS carrier phase measurements made by a receiver must be well understood. Recently investigators have used two types of data, Signal-to-Noise Ratio (SNR) and satellite elevation, as quality indicators for GPS carrier phase observations. This paper compares these two classes of data quality indicators. Single-differenced residuals are used to analyse the validity of the quality indicators, on a satellite-by-satellite basis. The results from a series of tests are presented and discussed.
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