Supported by the National Natural Science Foundation of China (No. 40874004, No.40504002);the National 973 Program of China (No.2006CB701301);the National 863 Program of China (No. 2006AA12Z326, No. 2007AA12Z345);the 111 Project(No. B07037)
When formation flying spacecrafts are used as platform to gain earth oriented observation, precise baselines between these spacecrafts are always essential. Gravity recovery and climate experiment (GRACE) mission is...
was supported by the National High Technology Research and Development Program of China (Grant No. 2007AA12Z345);the Science and Technology Commission of Shanghai Municipality of China(Grant No. 06DZ22101)
China's COMPASS satellite navigation system relies on a regional tracking network to provide navigation services. Limited by its geographic border,the regional network is able to cover only 30% of the medium-earth-orb...