Analysis of multi-constellation GNSS signal quality
Richardson, Terri and Hill, Chris and Moore, Terry and Toor, Pieter (2016) Analysis of multi-constellation GNSS signal quality. In: 2016 International Technical Meeting of The Institute of Navigation, 25-28 Jan 2016, Monterey, California.
The code pseudo-ranges and phase pseudo-ranges are affected by the systematic errors or biases and random noises. These errors can be classified into three groups, satellite related errors, propagation-medium related errors and receiver related errors (Hofmann-Wellenhof, Lichtenegger and Collins 2001; Leick 2004). Effective GNSS positioning depends on an understanding of the measurement error budget and eliminating or reducing those errors. Some systematic errors can be modelled and gives rise to additional terms in the observation equation, while other systematic effects can also be eliminated (or greatly reduced) by appropriate combinations of observables. However in the case of stand-alone positioning the use of relative positioning to reduce or eliminate biases is not a possible option.
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