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Algorithm for Analyzing the Integrity of Navigation Information of Control and Correcting Stations Network
Usage of control and correction station (CCS) networks is one of the methods to increase accuracy of navigation system, which uses the Global Satellite Navigation System (GNSS) signals. The network allows significant improvement of the navigation data accuracy by the use of correction data, which should be sent from one of CCS station to the GNSS receiver, located on the object, which should be controlled. But in case of CCS defect, the wrong correction data will be sent, which will cause a mistake in position determining. The paper presents the algorithm for checking the proper operation of CCS networks. The algorithm is presented as a drowning. It can be implemented for any receiver model as it is based in standard geometry methods. The paper also describes, where the data for calculations should be taken and gives advises for improvement of CCS operation. Also the CCS system reliability is calculated and the calculation shows that the usage of reserved system improves its reliability.