PERFORMANCE ANALYSIS OF SISPELSAT MSK-DGNSS RADIO SIGNAL IN PENINSULAR MALAYSIA
The use of Global Navigation Satellite System (GNSS) has become essential in providing location based information and navigation. Due to low accuracy of navigation solution, differential technique such as radio-beacon DGNSS has been used widely to augment the user single positioning using GPS. The Sistem Pelayaran Satelit (SISPELSAT) is a national DGNSS radio-beacon system in Malaysia consists of four broadcasting and two monitoring stations operated and managed by Marine Department of Malaysia. It provides a range of frequency from 283.5 to 325 kHz Minimum Shift Keying (MSK) radio-beacon DGNSS correction service within the shore of Peninsular Malaysia. In this study, the performance of SISPELSAT radio signal was assessed on-board of the Malaysian Vessel (MV) Pedoman and MV Pendamar. The study area covers 20 km shore distance extending from shoreline of Peninsular Malaysia with continuous tracking from SISPELSAT radio beacon signal. The DGPS observation data as well as the coverage of the signal strength, signal-to-noise ratio, accuracy and DGPS status were recorded for data processing and further analysis of SISPELSAT radio signal performance.