Authorized by the Japanese government in 2002, work on a concept for a Quasi-Zenith Satellite System (QZSS), or in Japanese, began development by the Advanced Space Business Corporation (ASBC) team, including Mitsubishi Electric, Hitachi, and GNSS Technologies Inc.
В неё включились компании Advanced Space Business Corporation (ASBC), Mitsubishi Electric Corp., Hitachi Ltd. и GNSS Technologies Inc. Однако ASBS прекратила существование в 2007 году.