频率估计和频谱分析是在电子侦察系统中进一步分析复杂通信信号的基础。
Frequency estimation and spectrum analysis are the foundation of the analysis of complex communication signals in electronic reconnaissance system.
通信信号的识别与解调是通信侦察的重要组成部分。
The identification and demodulation of the communication signals are important parts in communication surveillance.
通信侦察的基本任务是利用侦察设备对通信信号进行搜索、截获、分析。
The basic task of communication signal reconnaissance is to analyze the intercepted signals from the reconnaissance system.
本文概述了跳频通信的特点，讨论了对舰载跳频通信信号的侦察概率进行分析的数字式步进搜索技术所要解决的问题，并对其分析结果进行了仿真。
This paper states the traits of FH communication, and discusses the paradox of the digital strip scan technique that can analyze the reconnaissance probability of the shipboard FH radio.
硬件测试及实验结果表明，信号处理板的设计完全符合课题的要求，可应用于通信侦察的实时信号处理中。
In this thesis, the entire hardware design of the signal processing board is realized, then the developing of the communication signal reconnaissance system is mainly introduced.
信号情报侦察卫星用于侦收地面雷达、通信和测控等系统所辐射的电磁信号并对其定位，是航天侦察的重要手段。
SIGINT(Signal Intelligence) satellite is used to detect, intercept a nd locate electromagnetic(EM) signals radiated by systems such as ground radar, communication and TT&C systems.
信号情报侦察卫星用于侦收地面雷达、通信和测控等系统所辐射的电磁信号并对其定位，是航天侦察的重要手段。
SIGINT(Signal Intelligence) satellite is used to detect, intercept a nd locate electromagnetic(EM) signals radiated by systems such as ground radar, communication and TT&C systems.
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