| "Modulation Domain" (MOD) is a plane domain which is consisted of frequency and time of signals. It is a necessary field to measure signals in three-dimension space of signal (time domain, frequency domain and modulation domain). Modulation Domain Analysis is a new technology for complex signals analysis, it is a very important analysis technology in many fields. In recent years "Modulation domain analysis" offers a unique method for viewing complex modulated signals.It has a wide range of application in digital communication system, radar and electronic warfare system, mechanical electronic system, etc.The object of this paper is to design the structure of MDA-2's system software and design the IEEE-488 interface circuit. The paper discuss the system software structure at first, I solve some problem in this part, such as crude adjust and fine adjust, the printing of wave and data etc, the main innovation of my design is design a soft control panel and solve the system panel, I still analyse the method of digital signal processing in software, mainly discuss the median filter's performance. Secondly I put forth a new way of circuit design at discussing the IEEE-488 interface circuit designing, this method of circuit designing make the designing easy and cut short the period of circuit designing, so it is very value in practical circuit designing, the practical test result indicate the designed interface circuit can complete the 'talk' function, 'listen' function and program control function. In the end this paper tell about the VxD program designing. |
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