Deep Space Communication Channel Modeling And Implementation Of Simulation System For Mars Mission

With the development of science and technology,the competition of deep space exploration becomes more and fiercer in the world.In order to achieve deep space exploration farther,it is necessary to further explore the new deep space communication network architecture based on deep space channel model.At present,the deep space exploration in China is in a critical period of transition from the moon to Mars.The modeling and Simulation of the Mars communication deep space channel is of great significance to the development of the Mars exploration communication system.This thesis firstly introduces the development of deep space communication and the background and development of deep space channel simulator.The characteristics of deep space channel,the wave propagation theory is also analyzed and studied.The calculation method of Rician factor,propagation path loss,Doppler frequency shift,noise and other channel parameters are given.Secondly,the modeling results are simulated by using the link budget function of STK.The thesis analyzes the design and implementation of the joint programming with MFC and STK,and then a link budget software based on STK is developed.Thirdly,this thesis describes the design of a deep channel hardware simulation system,and analyzes the selection and performance of hardware equipment,presents the design and implement of each function module,and details design and implemented of data channel and transmission interface.The detailed design and implement of the application software of deep space channel simulation system is analyzed,including deep space channel parameter estimation software,CPCI driver software,attenuator and inverter program control software,TCP/IP module,multi thread module and other functional software.Finally,the hardware simulation system of deep space channel is tested.The results show that the software and hardware collaborative work is achieved.The system can satisfy the design requirements,which provide a useful reference for the scheme design and performance evaluation of future deep space communication system.