| 摘要: |
| 为了动态分析星间链路，提出了一种用来精确计算星间链路的距离“交点”模型，利用该模
型可以
使星间链路距离的误差仅为米级。在此基础上建立多普勒频移和链路预算动态分析模型，并
以STK(Satellite Tool Kit)/Matlab接口实现。最后以24/3/2构型Walker星座为例仿真
，得到多普勒频移及其变化率、载温比、门限余量等系统设计所必需的多组参数。 |
| 关键词: 星座 星间链路 STK/Matlab接口 链路预算 多普勒频移 |
| DOI： |
|
| 基金项目: |
|
| Dynamic Inter satellite Link Analysis and its STK/Matlab Implementation |
| WANG Qian,WANG Zu-lin,HE Shan-bao,GUO Xu-jing |
| (School of Electronic & Information Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191,China;China Academy of Space Technology, Beijing 100094,China) |
| Abstract: |
| In order to analyse intersatellite links(ISLs) dynamically, Intersect
ion model, an accurate distance calculation method of ISL is presented .The comp
utation error is only at meter level. Based on the above method, the model of Do
ppler shift and link budget dynamic analysis is constructed and realized by the
STK (Satellite Tool Kit)/Matlab interface. The dynamic simulation is performed b
y taking the 24/3/2 Walker constellation for instance. The parameters can be obt
ained such as Doppler shift, Doppler shift changing rate, carrier-to-temperature
ratio and threshold cushion,all of which are necessary for the inter-satellite
links communication system design. |
| Key words: constellation inter satellite link(ISL) STK/Matlab interface link budget Dop
pler shift |
