| "Modulation Domain"(MOD) is a plane domain which is consisted of frequency and time of signals.It is necessary field to measure signals in three-dimension space of signal(time domain,frequency domain and modulation domain). In recent years,"Modulation domain analysis" offers a unique method for viewing complex modulated signals. "Modulation Domain Analyzer"(MDA) may be used to analyze signal features that include of frequency ,time interval and phase verus time.It has a wide range of application in digital communication system,radar and electronic warfare system,mechanical electronic system,etc.A practical MDA. has been made by our teach and research group.The main objective of this paper is to improve and complete a MDA with new project.In this project,we add new measure function to measure parameter of pulse and enhance performance of the MDA.in this paper,I introduce the measure theory and the key technology of the MDA. The key technology includes "zero dead time counter(ZDT)", "related counter", "positive and negative time base couter", "in system programmable(isp)",ect.I complete the key component of the MDA with high-speed ECL devices and isp devices. |
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