摘要
在一箭多星发射的上升段测控中,通常情况下扩频信号的码间多址干扰对测控影响为主要因素。通过对双星、三星及六星上升段测控的实例分析,分析了卫星天线角对码间多址干扰的重要影响,并提出了降低上升段码间多址干扰的应对措施。面对未来高密度的发射任务,开展码间多址干扰分析,对地面高质量测控支持具有一定的现实意义和参考价值。
In the launch section measurement and control of multi-satellite emission,the main factor is the inter-code multiple access interference(ISI)of spread spectrum signal.The influence of satellite antenna angle on inter-code multiple access interference(ISI)is analyzed by analyzing the examples of measurement and control in launch section of double-satellites,three-satellites and six-satellites,and the measures to reduce ISI are proposed.For future high-density transmission tasks,it is of practical significance and reference value to carry out ISI analysis for high-quality ground measurement and control support.
作者
龙斌
杨俊武
陈绍军
丁宏义
LONG Bin;YANG Junwu;CHEN Shaojun;DING Hongyi(Unit 63758,PLA,Xiamen 361023,China;Xi’an Satellite Control Center,Xi’an 710043,China)
出处
《无线电工程》
2020年第3期199-202,共4页
Radio Engineering
关键词
直接序列扩频
码间多址干扰
卫星天线角
direct sequence spread spectrum
inter-code multiple access interference
satellite antenna angle
