北斗ka星间链路高动态应用辅助接收技术  

Assisted receiving technology for high dynamic application based on BDs ka inter-satellite link

作　　者：蔡文炳[1] 张中英[2] 卢樟健 陈玲玲[2] 陈宜稳[1] 同钊 徐连军[2] CAI Wenbing;ZHANG Zhongying;LU Zhangjian;CHEN Lingling;CHEN Yiwen;TONG Zhao;XU Lianjun(Beijing Institute of Tracking and Communication Technology,Beijing 100094,China;Xi’an Branch,China Academy of Space Technology,Xi’an 710100,China)

机构地区：[1]北京跟踪与通信技术研究所,北京100094 [2]中国空间技术研究院西安分院,陕西西安710100

出　　处：《现代电子技术》2023年第3期6-10,共5页Modern Electronics Technique

摘　　要：北斗三号ka频段星间链路具备为高速移动目标提供全球范围内测控数传服务的能力,但由于北斗三号ka频段星间链路是短突发信号,对于高速移动目标应用存在难以在短时间建链的难题。文中提出基于“GNSS+微惯性单元”的辅助信息生成方法,对接收机概略位置、速度/加速度、天线指向的预报值进行估计,开环辅助ka星间链路的接收。还提出了超紧组合导航结构,利用惯性信息辅助矢量跟踪的高动态跟踪环路,降低了接收机的瞬态响应误差和对环境的敏感度。仿真证明提出的高动态应用辅助接收技术(速度为12 km/s,加速度为11 kHz/s的情况)提供的辅助信息精度优于建链路需求,可完成百毫秒内的信号同步,实现北斗三号ka星间链路高动态快速建链的需求。The inter-satellite link of the BD-3 ka-band has the ability to provide global measurement and control digital transmission services for high-speed moving targets.However,the BD-3 ka-band inter-satellite link is a short burst signal,so it is difficult for the high-speed moving target application to establish a link in a short time.Therefore,an auxiliary information generation method based on″GNSS+micro inertial unit″is proposed to estimate the approximate position and speed/acceleration of the receiver,and the forecast value of antenna pointing,and assist the reception of the Ka inter-satellite link in an open loop.In addition,a super-tight combined navigation structure(high-dynamic tracking loop based on inertial information-assisted vector tracking)is proposed,which can reduce the transient response error and environmental sensitivity of the receiver.The simulation results show that the auxiliary information accuracy provided by the high-dynamic application auxiliary receiving technology(under the situation that the speed is 12 km/s and the acceleration is 11 kHz/s)proposed in this paper is better than the requirements of link construction,can complete the signal synchronization within 100 ms,and realize the requirements of highdynamic and fast link construction of BD-3 Ka-band inter-satellite link.

关 键 词：辅助接收技术 星间链路 高速移动目标 辅助信息生成 高动态跟踪 信号同步 快速建链 

分 类 号：TN927-34[电子电信—通信与信息系统]