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Carrier Phase Cycle-Slip Detection

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Title Carrier Phase Cycle-Slip Detection
Author(s) J. Sanz Subirana, J.M. Juan Zornoza and M. Hernández-Pajares, Technical University of Catalonia, Spain.
Level Basic
Year of Publication 2011

Receiver losses of lock cause discontinuities in the phase measurements (cycle-slips) that are seen as jumps of integer number of wavelengths [math]\displaystyle{ \lambda }[/math] (i.e., the integer ambiguity N changes by and arbitrary integer value).

Different heuristic methods are used for cycle-slip detection, operating over undifferenced, single-differenced or double-differenced measurement between pairs of satellites and receivers.

The methods presented are oriented to the single receiver positioning, and thence, does not require any differencing of data between receivers, being suitable to be implemented in real-time mode. Moreover, they are based in using only combinations of measurements in different frequencies, or just one frequency measurements. That is, do not need any geometrical delay modelling.

The examples of the detectors are described in: