Journal of Applied Geodesy
Editor-in-Chief: Kahmen, Heribert / Rizos, Chris
CiteScore 2018: 1.61
SCImago Journal Rank (SJR) 2018: 0.532
Source Normalized Impact per Paper (SNIP) 2018: 1.064
VirtuaLites: Aided Single Epoch GPS Integer Ambiguity Resolution for Agricultural Land Vehicle Applications
The use of GPS technology in the agricultural environment has allowed the development of precision guidance systems that have greatly increased farm efficiencies and reduced environmental impacts. In order to maximize the benefits available from precision agriculture it is necessary to achieve centimeter-level accuracies in the position determination. While real time kinematic (RTK) positioning with integer ambiguities fixed is currently used in order to achieve this level of accuracy, this technique can still suffer outages that result in the need to reacquire the integer ambiguities quickly and reliably. This paper describes a method to improve the success rate for single epoch on-the-fly ambiguity resolution by augmenting the set of observations used to construct the GPS float solution with virtuaLite measurements in order to improve the real-valued ambiguity estimates and to reduce the float solution variances, which leads to a an improvement in the success rate when fixing the ambiguities to integers.