Japan’s CLAS positioning service receives major upgrade
Japan’s Quasi-Zenith Satellite System (QZSS) CLAS received a major enhancement on Nov. 30. QZSS CLAS (centimeter-level augmentation service) is the satellite-based nationwide open PPP-RTK service in Japan, providing centimeter positioning accuracy within one minute. With the introduction of a new, highly efficient atmospheric correction message, the number of available satellites will be increased to 17 for those using CLAS. GPS,... read more
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