| 1. | Direction finding is one of the most important parts in the communication countermeasure
通信测向是通信对抗中的重要组成部分之一。 |
| 2. | The results of measurement show that the performance of intermodulation suppression can meet the expectation of communication countermeasures
测试结果表明，跳频接收机的互调抑制设计满足通信对抗的技战术使用要求。 |
| 3. | In chapter 4 , simulation models of constant frequency communication countermeasure federation and results of federation test and federation execution are presented
第四章给出了定频通信对抗联邦的仿真模型以及联邦测试、联邦执行结果。 |
| 4. | So researching the surveillance , interception and classification methods for fh signals has been a difficult and pressing task in communication countermeasure fields
开展对跳频通信对抗的研究，寻求截获，分选识别跳频通信信号方法，已成了当前通信对抗领域紧迫而困难的任务之一。 |
| 5. | This thesis includes researches on the design of communication countermeasure federation , implementations of constant frequency and fh ( frequency hopping ) communication countermeasure federations
本文的研究内容分为三个部分:通信对抗联邦设计、定频通信对抗联邦实现以及跳频通信对抗联邦实现。 |
| 6. | Restricted by the long period , high cost and condition , the computer simulation is used to evaluate the communication countermeasure and direction finding rather than making hardware experiments
由于通信测向硬件测试和分析成本高、周期长、受外界条件限制严重,因此在很大程度上依赖计算机仿真技术,计算机仿真获得了广泛应用。 |
| 7. | With the objective of developing distributed simulation system of frequency hopping ultrashort communication countermeasure system , the federation architecture and the complex envelop simulation block diagrams of fr transmitter and receiver are presented at first
摘要以建立超短波跳频通信对抗分布式仿真系统为目的，首先给出了联邦的体系结构及跳频发信机、接收机成员的复包络仿真框图。 |
| 8. | Chapter 1 introduces the extensive application of hf / vhf communication and hf / vhf radios in military field , and points out the significance for promoting the research work of fh communication countermeasure using modern signal processing techniques , especially time - frequency analysis
第一章介绍了短波通信和短波跳频电台在军事领域中的广泛应用，以及现代信号处理技术特别是时频分析技术对促进跳频通信对抗研究的重要意义。 |
| 9. | In this thesis , the design and implementation of communication countermeasure simulation system based on hla / simulink are investigated with the background of link simulation system for communication countermeasure system in field operations and with the assistant software of kd - hlasimulink toolbox
本文以野战通信对抗的链路仿真系统为背景,应用kd - hlasimulink工具箱软件,研究了基于hla / simulink的通信对抗仿真系统的设计与实现。 |
| 10. | Frequency - hopping ( fh ) is a novel spread spectrum communication technique , which develops very fast in military field due to its lpi / lpd ( low probability of intercept / detection ) properties and immunity against interferences , the extensive application of hf ( high frequency ) frequency - hopping radios in military has greatly enhanced the ability of military equipments against jamming and interception and brought up a new austere challenge for communication countermeasures
跳频通信具有良好的抗干扰性，低截获概率及组网能力，因此跳频技术的一出现，便在军事领域得到了极大的发展，采用跳频技术的短波电台在军事通信中得到了广泛应用，极大地提高了军事装备的抗截获和抗干扰能力，向通信对抗提出了严峻的挑战。 |
