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1 Artificial Satellites : Journal of Planetary Geodesy

1 2007

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Sensitivity of ADOP to changes in the single-baseline GNSS model

Odijk D., Teunissen P. J. G.

Artificial Satellites : Journal of Planetary Geodesy

2007

Vol. 42, No. 2

71--96

The ADOP (Ambiguity Dilution Of Precision) is a measure for the precision of the carrier phase ambiguities involved in precise relative GNSS positioning. By computing the ADOP one may get knowledge in whether ambiguity resolution can be expected successful or not, already in a stage before the GNSS data are collected. In Odijk and Teunissen (2008) compact closed-form expressions have been derived for the ADOP of single-baseline GNSS models. In this paper these expressions are used to study the impact of certain changes in these models, as there are the observation time span, the weighting of the ionospheric delays, the number of frequencies, the weights of the phase and code data, the number of satellites, elevation-dependent observation weights and taking linear combinations of data.