摘要
为更好地实现高动态链路中的载波捕获跟踪,以高动态载体在临近空间中的各种简单运动模型为依据,对载体相对于临近空间接收平台的多普勒频移变化趋势进行描述和仿真,在此基础上分析多普勒频移对载波同步产生的影响。理论分析和仿真结果表明,基于高动态载体运动模型的多普勒频移变化曲线能够正确描述高动态运动方式下的多普勒频移变化趋势。
In order to realize carrier acquisition and tracking of high dynamic link better,Doppler frequency shift between high dynamic aircraft and near space receive plat is described and simulated in terms of the motion models of high dynamic aircrafts in near space,and based on the result,the influence on carrier synchronization caused by Doppler frequency shift is discussed.Analysis and simulation results show that Doppler frequency shift achieved in terms of high dynamic motion models can accurately describe Doppler shift trends under high dynamic movement.
出处
《计算机工程》
CAS
CSCD
北大核心
2010年第20期22-24,共3页
Computer Engineering
基金
国家自然科学基金资助重点项目"空天地一体化信息网络的基础理论及关键技术研究"(60532030)
关键词
临近空间
高动态运动模型
多普勒频移
载波捕获跟踪
near space
high dynamic motion model
Doppler frequency shift
carrier acquisition and tracking
作者简介
仲伟志（1980-），女，博士，主研方向：卫星通信，扩频通信；E-mail：z_weizhi3000@126．com
郭庆，教授、博士生导师
