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声表面波(SAW)线性调频变换(CZT)技术是实时傅利叶变换处理的主要支持性技术之一。其实用化研究始于七十年代末。本文将介绍作者以射电天文望远镜为直接应用对象,所研制的SKP-1型宽带高分辨率SAW功率谱仪。其中着重介绍一种扩展CZT变换器固有50％有效工作周期的新方法。并给出谱仪实验室测量的详细性能。
Surface acoustic wave (SAW) linear frequency modulation (CZT) technology is one of the main supportive technologies for real-time Fourier transform processing. In fact, practical research began in the late seventies. This article will introduce the SKP-1 wideband high resolution SAW power spectrometer developed by the author using the radio telescope as its direct target. It highlights a new way to extend the inherent 50% duty cycle of a CZT converter. And gives the detailed performance of the spectrometer laboratory measurement.