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A GPS receiver is well known as a positioning sensor of a car navigation system and a mobile phone. GPS enables accurate positioning continuously 24 hours under any weather conditions all over the world. Japan Radio Co., Ltd. (JRC) has taken interest in the prospect of GPS since the emergence of GPS. As the result, JRC has been able to develop the world's first GPS receivers for navigation systems installed into the automobile, and has built the top market share of the automotive usage's GPS receivers. In addition, GPS receiver and GPS compass for the maritime usage have also received high recognitions. Since over thirty five years have passed after the beginning of GPS development, Global Navigation Satellite System (GNSS) becomes more important than before; U.S. is modernizing the GPS, Russia is modernizing the GLONASS, EU is proceeding development of the Galileo, and Japan is proceeding development of the Quasi-Zenith Satellite System (QZSS). On this paper, we introduce evolution of JRC's GPS receivers for automotive usage, GPS receivers for maritime usage, and GPS compass, and introduce to the future trends of GNSS.

Yoshiharu Ogasa
Hiroya Suzuki
Toshihiro Kawazoe