卫星扩频测控基带系统设计  

Design of baseband system of satellite spread spectrum TT&C

作　　者：鲍大志 邢斯瑞 孙伟 韩旭天 Bao Dazhi;Xing Sirui;Sun Wei;Han Xutian(Chang Guang Satellite Technology Co.,Ltd.,Changchun 130102,China)

机构地区：[1]长光卫星技术股份有限公司,吉林长春130102

出　　处：《电子技术应用》2022年第9期81-85,共5页Application of Electronic Technique

摘　　要：卫星测控分系统负责遥测、遥控信号在卫星与地面站之间的传输。扩频测控体制由于抗干扰性强、保密性好、易于实现多星测控等优势,已经逐渐成为主流测控方式。在测控频段上,X频段由于频率资源丰富且对商业测控开放,已经成为商业航天使用的主要测控频段。根据低轨卫星测控分系统需求,设计了一套X频段扩频测控应答机基带系统,能够实现X频段扩频测控信号的发射和接收。通过优化设计二维捕获、跟踪环路等模块,系统可以满足低轨卫星高动态多普勒下的性能需求。The satellite tracking telemetry and command(TT&C)subsystem is responsible for transmitting telemetry and receiving remote control signals between the satellite and the ground station.Spread Spectrum TT&C system has gradually become the mainstream TT&C mode because of its strong anti-interference,good confidentiality and easy to realize multi Satellite TT&C.In the TT&C frequency band,X frequency band has become the main TT&C frequency band used in commercial spaceflight due to its rich frequency resources and openness to commercial TT&C.According to the requirements of low orbit satellite TT&C subsystem,a baseband system of X band spread spectrum TT&C transponder is designed,which can transmit and receive X band spread spectrum TT&C signal.By optimizing the design of 2D acquisition and tracking modules,the system can meet the performance requirements of low orbit satellites under high dynamic Doppler.

关 键 词：卫星测控 基带 捕获跟踪 多普勒 

分 类 号：TN927[电子电信—通信与信息系统] V55[电子电信—信息与通信工程]