2021 Weems Award

Presented to: Satoshi Kogure

Citation: For technical and programmatic leadership in the development of Japan’s Quasi-Zenith Satellite System serving the Asia-Pacific region, and for leadership in international GNSS

Satoshi Kogure

From the inception of QZSS, Satoshi Kogure has been technically, programmatically, and politically working to make QZSS a standalone system. Kogure-san has made several seminal contributions to the QZSS signal design which include leading the performance improvement of the QZSS Centimeter Level Augmentation Service (CLAS), a new approach for representing integrated satellite orbit and clock error corrections to meet data rate constraints.

He made key contributions to the design of the 2-kbps L6 signal that broadcasts CLAS information, employing code shift key data modulation for the high data rate. These contributions improved CLAS performance, enabling it to be widely adopted by Japanese industries. He identified an enhanced L1 C/A signal design, allowing continued use of short spreading codes for low-cost chipsets, while greatly reducing interference. This concept has been adopted for the QZSS L1 C/B signal, to be broadcast from QZS- 1R and subsequent satellites. An experimental MADOCA-PPP correction service is now available in the Asia-Pacific region, with enhanced operational capability by 2024. Additionally, an earlywarning service signal in the Asia-Pacific region is being developed in collaboration with Galileo and Indian NavIC. Mr. Kogure is currently leading a team developing intersatellite ranging, as well as two-way ranging between satellites and ground tracking sites for even better accuracy.

Mr. Kogure has regularly contributed to the ICG annual meetings where he has advocated for multi-GNSS demonstration campaigns. He has led an Asia-Pacific consortium, Multi-GNSS Asia (MGA) for promoting benefits from utilizing multiple constellations.

As of September 2021, Mr. Kogure is senior chief officer of Satellite Navigation Technology, and director of the Satellite Navigation Unit, Space Technology Directorate I, and Japan Aerospace Exploration Agency (JAXA). Previously, he was executive director for Quasi-Zenith Satellite System (QZSS) Development, as well as National Space Policy secretariat in the Cabinet Office for the Government of Japan. He received an MS in Aeronautical Engineering from Nagoya University in 1993 and another MS in Aerospace Engineering from University of Colorado at Boulder in 2001.