摘要相位编码信号和频率编码(FSK/PSK)组合信号是在单一信号调制基础上发展而来的一种信号形式,FSK/PSK组合信号具有图钉型的模糊函数,而且具有良好的分辨能力、测速测距性能以及其低截获性能,在现在的雷达发展应用中占据重要的地位。
本文首先介绍了模糊函数的定义及切割性能,然后以m序列和costas码为例,分析了相位编码信号和频率编码信号的波形,频谱及模糊函数特性。随后,对相位上m序列编码,频率上castas调制的复杂LPI信号进行研究,分析其信号形式,波形,频谱,并通过仿真结果分析模糊函数特性。最后,研究了该复杂信号匹配处理过程。19545
关键词 FSK/PSK组合信号 模糊函数 M序列 costas编码
毕业设计说明书(论文)外文摘要
Title Analysis and processing of FSK/PSK signal
Abstract
Phase coded signal and the frequency coding (FSK/PSK) signal is a signal form developed on the basis of single signal modulation, FSK/PSK signal which occupies an important position in the development of radar application now has a pushpin type ambiguity function, but also has the good resolution, speed ranging performance and the low probability of intercept.
The definition of ambiguity functions and cutting performance are first introduced in this paper,and then m sequence and Costas code will be taken for example. phase coded signal’s and the frequency coding signal’s waveform spectrum and ambiguity function are analysed then. Next,the analysis about waveform, frequency, and ambiguity function features of the phase coding with m sequence and frequency coding with costas modulation of complex LPI signal frequency are introduced through the analysis of simulation results. Finally, the complex signal process matching processing is discussed.
Keywords FSK/PSK signal ambiguity function M sequence Costas code
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