[S-GD02] Geodesy and Global Geodetic Observing System

[SGD02-07] Compact, Low-Cost, Multi-purpose SLR System Omni-SLR (1) System Overview and Developemet Status

*Toshimichi Otsubo¹, Hiroshi Araki², Yusuke Yokota³, Kenji Kouno³, Mihoko Kobayashi¹, Takehiro Matsumoto⁴, Yusuke Nakamura³, Junichi Nakajima⁵, Haruna Furui⁶, Masaki Honda⁶, Shinobu Kurihara⁶, Yuichi Aoyama⁷ (1.Hitotsubashi University, 2.National Astronomical Observatory, 3.Institute of Industrial Science, the University of Tokyo, 4.Japan Aerospace Exploration Agency, 5.Softbank Corp., 6.Geospatial Information Authority of Japan, 7.National Institute of Polar Research)

Keywords:Space Geodesy, Satellite Laser Ranging, Precise Orbit Determination, GGOS

The global coverage of space geodetic stations is crucial for the precise determination of terrestrial reference frames and other geodetic parameters. Aiming to improve the global coverage of satellite laser ranging (SLR) stations, we have been involved in the development of the Omni-SLR system by significantly reducing its size and cost. Following the first successful laser-ranging operation in Tachikawa in December 2023, we have been testing the system at the Ishioka Geodetic Observing Station of GSI. Various technical developments, such as optical alignment, high-rate signal processing, and precise tracking, are ongoing there. The Ishioka station has already successfully tracked several low-Earth orbiting satellites.

As an easily transportable station, its reference point is set at the marker installed directly underneath the tracking mount. It has already been registered as one of the ILRS Engineering Stations with the CDP Number 7317 95 01 and the DOMES Number 21791M008.