TY - CHAP A1 - Jiuhou Lei A2 - Guangming Chen A3 - Jiyao Xu A4 - Xiankang Dou ED1 - Shuanggen Jin Y1 - 2013-05-29 PY - 2013 T1 - Impact of Solar Forcing on Thermospheric Densities and Spacecraft Orbits from CHAMP and GRACE N2 - Space geodetic techniques, e.g., global navigation satellite systems (GNSS), Very Long Baseline Interferometry (VLBI), satellite gravimetry and altimetry, and GNSS Reflectometry & Radio Occultation, are capable of measuring small changes of the Earth�s shape, rotation, and gravity field, as well as mass changes in the Earth system with an unprecedented accuracy. This book is devoted to presenting recent results and development in space geodetic techniques and sciences, including GNSS, VLBI, gravimetry, geoid, geodetic atmosphere, geodetic geophysics and geodetic mass transport associated with the ocean, hydrology, cryosphere and solid-Earth. This book provides a good reference for geodetic techniques, engineers, scientists as well as user community. BT - Geodetic Sciences SP - Ch. 7 UR - https://doi.org/10.5772/56599 DO - 10.5772/56599 SN - PB - IntechOpen CY - Rijeka Y2 - 2021-06-21 ER -