COMPARATIVE ANALYSIS OF GEODETIC RECEIVER AND ANDROID SMARTPHONE PARAMETERS IN THE CONTEXT OF GPS, GALILEO AND QZSS CONSTELLATIONS

Global Navigation Satellite Systems (GNSS) provides precise position, navigation and timing data (PNT) for global and regional satellite constellations.Geodetic GNSS receivers used for surveying and geospatial uses have the limitations of high cost and complexity.Compact, lower cost GNSS receivers/ modules, and handheld devices were commercially available for use later on.This paper presents a comparative analysis of signal strength measurements obtained from geodetic receiver and android smartphones across multiple GNSS constellations, including GPS, GALILEO and QZSS.The research aims to assess and compare the performance of geodetic receiver and android smartphones in capturing and processing signals from diverse satellite constellations with implications for positioning accuracy.The experimental methodology involves systematic data collection using single-frequency and dualfrequency android smartphones and the GPStation-6 receiver, situated at the Advanced