| At information age, many different kinds of radio systems such as guide system,radar,communication system and navigation system, etc., are often arranged in a local area. And the density of the electromagnetic radiation bodies and electromagnetic signals are so large that they will probably interfere each other. In order to make the radio systems work normally and do not interfere each other in this area, a lot of electromagnetic compatibility problems need to be solved. A very important one is the intersystem prediction and analysis of electromagnetic compatibility to the radio systems in this electromagnetic environment.This paper presents research on the intersystem prediction and analysis of electromagnetic compatibility to the radio systems positioned by the geographical longitude and latitude coordinate system and the elevation system. It can give assistant solution to the interference among the radio systems so as to avoid functional degradation and even failure after the systems disposed and mounted and the money and time wasting. The plan of prediction and analysis has been worked out based on the electromagnetic interference and prediction equation and the multilevel prediction principle after analyzing the interference features and structure of the radio system. The electromagnetic compatibility prediction model of the transmitter, emission antenna, receiving antenna and receiver has been built respectively. To the radio system on the land the frequency of electromagnetic wave is often between 300KHz-3000GHz, so the general model of transmission loss within this wave range are adopted. It uses the longitude and latitude geographic coordinate system to fix the position relationship among the radio systems and their interface to the electronic map database and has researched on the related problem. It uses Visual C++6.0 programming tool to program the tool software about the intersystem prediction and analysis of electromagnetic compatibility to the radio systems. In... |
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