论文部分内容阅读
本文着重讨论Chirp变换理论及其SAWChirp变换器在信号处理技术中的应用。由二个或三个Chirp滤波器可组成一个Chirp变换器,把Chirp变换器作为一个单元组件可用来作为频谱分析器、适时网络分析器、波束形成器和波形综合器等。把若干个Chirp变换器组合起来又可以作为可变频率带通滤波器、可变程序相关器、时谱分析器及可变延迟线等。本文将介绍这些应用,并探讨各种应用的性能对声表面波器件的要求,文内还将对我们已做过试验研究的“相干捷变频信号发生器”及“适时网络分析器”作一简介。
This article focuses on the Chirp transform theory and its SAWChirp converter in the signal processing technology. A Chirp converter can be made up of two or three Chirp filters, and a Chirp converter can be used as a unit to provide spectrum analyzers, timely network analyzers, beamformers, and waveform synthesizers. The combination of a number of Chirp converters can be used as a variable frequency band-pass filter, variable program correlator, time spectrum analyzer and variable delay line. This article describes these applications and discusses the performance requirements for a variety of applications of surface acoustic wave devices. We will make a comparison of the “Coherent Frequency Agile Signal Generator” and the “Timely Network Analyzer” that we have done Introduction.