# Satellite Edge Computing for the Internet of Things in Aerospace
)1 College of Intelligence Science and Technology, The National University of Defense Technology, Changsha 410073, China; [EMAIL_ADDRESS] (Y.W. ); [EMAIL_ADDRESS] (X.G. ); [EMAIL_ADDRESS] (Z.Q. )1 College of Intelligence Science and Technology, The National University of Defense Technology, Changsha 410073, China; [EMAIL_ADDRESS] (Y.W. ); [EMAIL_ADDRESS] (X.G. ); [EMAIL_ADDRESS] (Z.Q. )1 College of Intelligence Science and Technology, The National University of Defense Technology, Changsha 410073, China; [EMAIL_ADDRESS] (Y.W. ); [EMAIL_ADDRESS] (X.G. ); [EMAIL_ADDRESS] (Z.Q. )1 College of Intelligence Science and Technology, The National University of Defense Technology, Changsha 410073, China; [EMAIL_ADDRESS] (Y.W. ); [EMAIL_ADDRESS] (X.G. ); [EMAIL_ADDRESS] (Z.Q. )1 College of Intelligence Science and Technology, The National University of Defense Technology, Changsha 4100073, China; [EMAIL_ADDRESS] (Y.W. ); [EMAIL_ADDRESS] (X.G. ); [EMAIL_ADDRESS] (Z.Q. )1 College of Intelligence Science and Technology, The National University of Defense Technology, Changsha 410073, China; [EMAIL_ADDRESS] (Y.W. ); [EMAIL_ADDRESS] (X.G. ); [EMAIL_ADDRESS] (Z.Q. )1 College of Intelligence Science and Technology, The National University of Defense Technology, Changsha 410073, China; [EMAIL_ADDRESS] (Y.W. ); [EMAIL_ADDRESS] (X.G. ); [EMAIL_ADDRESS] (Z.Q. )1 College of Intelligence Science and Technology, The National University of Defense Technology, Changsha 410073, China; [EMAIL_ADDRESS] (Y.W. ); [EMAIL_ADDRESS] (X.G. ); [EMAIL_ADDRESS] (Z.Q. )1 College of Intelligence Science and Technology, The National University of Defense Technology, Changsha 410073, China; [EMAIL_ADDRESS] (Y.W. ); [EMAIL_ADDRESS] (X.G. ); [EMAIL_ADDRESS] (Z.Q. )1 College of Intelligence Science and Technology, The National University of Defense Technology, Changsha 410073, China; [EMAIL_ADDRESS] (Y.W. ); [EMAIL_ADDRESS] (X.G. ); [EMAIL_ADDRESS] (Z.Q. )1 College of Intelligence Science and Technology, The National University of Defense Technology, Changsha 4100073, China; [EMAIL_ADDRESS] (Y.W. ); [EMAIL_ADDRESS] (X.G. ); [EMAIL_ADDRESS] (Z.Q. )1 College of Intelligence Science and Technology, The National University of Defense Technology, Changsha 410073, China; [EMAIL_ADDRESS] (Y.W. ); [EMAIL_ADDRESS] (X.G. ); [EMAIL_ADDRESS] (Z.Q. )1 College of Intelligence Science and Technology, The National University of Defense Technology, Changsha 4100073, China; [EMAIL_ADDRESS] (Y.W. ); [EMAIL_ADDRESS] (X.G. ); [EMAIL_ADDRESS] (Z.Q. )1 College of Intelligence Science and Technology, The National University of Defense Technology, Changsha 410073, China; [EMAIL_ADDRESS] (Y.  
often physically and logically distant from the terminal. It results in a high communication latency between the terminal and the cloud [11]. With the coming of the age of Big Data, the amount of data has exploded. According to Cisco's 2017 NVI report, globe IoT data reached 2 EB/month in 2016 and is expected to reached 14 EB/month by 2021, with a compound annual growth rate of 49% [12]. The increasing amount of data brings in substantial stress on the network links. The situation will be even worse as satellites are limited by orbits and onboard resources. In order to help address these issues, the concept of edge computing has been used in satellite IoT systems. The basic principle is to extend cloud platform capabilities to the edge of the network [13]. It supports data processing via their shared pool of computing resources, minimizing the amount of data sent to the cloud for faster processing results [14]. The combination has the following three key benefits: (1) lowering the amount of communication data and reducing the bandwidth demands on network link; (2) reducing the latency for application and services; and (3) support mobility of devices and geographically-distributed applications. Traditional satellites are highly customized according to specific functions. The satellite functions have been identified at the beginning of the design and cannot be changed during the run-time.