PCM/FM再入遥测系统建模及仿真  

Model and Simulation of PCM/FM Reentry Remote Sensing System

作　　者：贺知明[1] 蒋红丽[1] 黄强[1] 罗冠祺[1] 

机构地区：[1]电子科技大学电子工程学院,成都610054

出　　处：《系统仿真学报》2007年第23期5466-5468,5490,共4页Journal of System Simulation

基　　金：国家自然科学基金资助(10376004)

摘　　要：基于再入遥测实际系统,提出了一种简化的PCM/FM系统仿真模型,重点分析了再入遥测信道双径模型的特性。当传输码速率较高的情况下,再入遥测信道呈现频率选择性衰落特性,双径模型可以很好的模拟这种频率选择性信道。对整个系统的仿真有利于清楚了解各个主要部件对系统性能的影响,仿真过程为自适应均衡器提供了实验数据。Based on the actual Reentry Remote Sensing System, a simplified simulation model of PCM/FM system was proposed, especially emphasizing the character of two-path model. When transmitting signal at high bit rate, the Reentry Remote Sensing channel presented an obvious character of frequency selective fading and the two-path model could well model this channel. Through simulating the whole system, how every main part influenced the performance of the whole system could be clearly comprehended. The simulation results provide experimental data for the adaptive equalizer.

关 键 词：再入遥测 PCM/FM 多径衰落 双径模型 频率选择性衰落 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]