Clustering based PDOP Analysis for GPS and NavIC Combined Constellation

In today's world, the satellite navigation system is used for various applications, from tracking objects to missile launching. It can provide specific positioning everywhere in the world with more precise information. Some global navigation systems widely used are the GPS of the United States, the Russian Global Navigation Satellite System, Galileo of the European Union, and the BDS of China. All the satellites under these navigation systems can be used to obtain more accuracy and system stability. However, considering all the satellites can increase the receiver processor cost. So instead, a few satellites can be selected which are capable of producing high accuracy, which can keep the high real-time performance intact.The K-Means clustering algorithm is used in the satellite selection process for GPS and NavIC Integrated Navigation system, which can provide reliable navigation, timing, and positioning services in India using IISC Bangalore data for calculating GDOP values to measure its accuracy.