cpm 信号干扰和抗干扰技术分析word格式论文.docxVIP

连续相位调制(CPM)具有频谱利用率和功率利用率高的特点，已经成为军事通信领域的主流应用技术，采用该项技术能够使军事通信装备获得最佳费效比，因 此本文研究了 CPM 信号抗干扰和干扰技术以及干扰策略。本文介绍了 CPM 的基本原理、通信中干扰和抗干扰的基本理论，讨论了干扰 实施的步骤，和几种常见的干扰信号模型。分析了对数-MAP 算法、软输出 Viterbi 算法(SOVA)和 CPM 信号的 Laurent 分解，研究了 FH-CPM 系统抗干扰性能和干扰 CPM 信号的仿真。重点介绍了基于 CPM 系统的迭代抗干扰算法并给出具体步骤；在存在部分带 干扰和多音干扰的情况下，对二进制和四进制 FH-CPM 系统，当采取不同的干扰 因子、不同的每跳符号数和不同迭代次数时系统性能进行了仿真分析；从理论上研究了基于熵的 CPM 信号最佳干扰波形；对 CPFSK/MSK、四进制 CPM 和具有 连续相位的 4PSK/8PSK 等信号作了仿真分析。关键词：连续相位调制干扰抗干扰迭代Continuous phase modulation(CPM) technology has become a mainstream application technology for military communications owing to its characteristics feature of high spectrum efficiency and power utilization. The very technology enables military communication equipment to get the best cost-effective. This thesis studies jamming, anti-jamming and jamming strategy on the CPM signals.A brief introduction to the fundamental principle and the theory is given withemphasis on the jamming and anti-jamming of CPM communications system, and the implementation of the steps during jamming process. and then a few of common models with jamming signal were described. And the log-MAP algorithm, soft output viterbi algorithm (SOVA) and CPM signal with Laurent decomposition. It has been shown that the simulation results of anti-jamming performance of FH-CPM system and jamming of CPM signals.The thesis lays emphasis on the CPM system based on iterative anti-jamming algorithm and gives the concrete steps. In the case of the presence of partial band jamming and multi-tone jamming, the thesis analyzes the performance of simulation results on binary and quaternary FH-CPM system with different jamming- factors, the number of symbols per hop and different iterative numbers. Besides, the thesis studies theoretically based on the entropy of the optimum jamming waveform on CPM signals. Eventually, CPFSK/MSK, 4CPM and 4PSK/8PSK with continuous phase are also analyzed by simulations.Keywords: CPM Jamming Anti-jamming Iterative目 录第一章 绪论......................