[S-GD01] Geodesy and Global Geodetic Observing System

[SGD01-P14] Recent Geodetic Efforts at NICT for Stable Operation of Optical Atomic Clocks and High-Precision Chronometric Levelling

*Ryuichi Ichikawa¹, Yoshiyuki Tanaka², Ryo Honda³, Yuichi Imanishi⁴, Koji Matsuo⁵, Yoshifumi Hiraoka⁵, Basara Miyahara⁵ (1. National Institute of Information and Communications Technology, 2. The University of Tokyo, 3. Mount Fuji Research Institute, Yamanashi pref., 4. Earthquake Research Institute, The University of Tokyo, 5. Geospatial Information Authority of Japan)

Keywords:Optical clock, Gravitational red shift, GNSS, Earth tide, Chronometric Levelling