With the rapid increase of number and types of Low Earth Orbit (LEO) and Medium Earth Orbit (MEO) spacecrafts in China, the insufficiency of TT&C resources is exposed.How to improve LEO and MEO TT&C coverage r...With the rapid increase of number and types of Low Earth Orbit (LEO) and Medium Earth Orbit (MEO) spacecrafts in China, the insufficiency of TT&C resources is exposed.How to improve LEO and MEO TT&C coverage rate has become the key problem of TT&C system,which should be resolved urgently. Firstly,the basic concepts of TT&C coverage are discussed and the relation between TT&C coverage of ground station and geography latitude of ground station as well as spacecraft altitude are analyzed. Secondly,the United States NASA TT&C network is taken as an instance to describe the developing process of TT&C network. Finally,in combination with TT&C activities of LEO and MEO spacecrafts in China,the method to heighten TT&C coverage rate is put forward,such as rational establishing station,space resources application,international TT&C cooperation etc.展开更多
文摘With the rapid increase of number and types of Low Earth Orbit (LEO) and Medium Earth Orbit (MEO) spacecrafts in China, the insufficiency of TT&C resources is exposed.How to improve LEO and MEO TT&C coverage rate has become the key problem of TT&C system,which should be resolved urgently. Firstly,the basic concepts of TT&C coverage are discussed and the relation between TT&C coverage of ground station and geography latitude of ground station as well as spacecraft altitude are analyzed. Secondly,the United States NASA TT&C network is taken as an instance to describe the developing process of TT&C network. Finally,in combination with TT&C activities of LEO and MEO spacecrafts in China,the method to heighten TT&C coverage rate is put forward,such as rational establishing station,space resources application,international TT&C cooperation etc.
