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。
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
Abstract: 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.
Key words:
near space,
high dynamic motion model,
Doppler frequency shift,
carrier acquisition and tracking
中图分类号:
仲伟志, 郭庆. 基于高动态运动模型的多普勒频移仿真[J]. 计算机工程, 2010, 36(20): 22-24.
ZHONG Wei-Zhi, GUO Qiang. Doppler Frequency Shift Simulation Based on High Dynamic Motion Model[J]. Computer Engineering, 2010, 36(20): 22-24.