| In the modern society, due to the requirement of the transportation, the national defense and the military sphere and many others, the shipbuilding industry has achieved a rapid development. And the importance of the ship is also increasing, so the demands of the multi category function is becoming more and more complicated. In modern warships field, a variety of shipboard radar has emerged in endlessly, due to its special status, the shipbuilding industry has becoming the research hotspot. Shipboard radar should complete the function of communication, navigation, detection and others. Due to multiple radars work together can lead to the ship's electromagnetic environment worse and worse. In order to solve the problem of electromagnetic compatibility of shipboard radar, this paper deals with the shipboard radar transmitting antenna visualization analysis.From the basic theory of electromagnetic calculation field and the principles of two aspects of far and near field, this article analyzes the electromagnetic environment of ship.Then introduces the effect on shipboard radar antenna that the three parameters of the coupling, the intensity of electromagnetic near field and pattern distortion have, by comparing the different work frequency of the antenna, can get the change rule. Finally,identify several important factors affecting radar antenna layout: frequency, coupling,direction and far and near field intensity.To ensure that the simulation of the ship electromagnetic environment in realistic, must structure electromagnetic ship model accurately, in order to improve the efficiency of geometric model, we need to simplify ships. And tiny metal structure the influence on the characteristics of the electromagnetic wave propagation can be neglected. In this paper using the professional electromagnetic calculation software FEKO to establish the full-size ship model, then simulate the environment of the ship electromagnetic and analyze the compatibility of the electromagnetic in the shipboard radar including the electromagnetic characteristics of the shipboard shortwave antenna, and the surface current on the ships and the characteristics of the intensity change of sensitive areas on field, etc.Provide field strength and direction graph visualization data.This paper conduct a lot of simulation experiments so as to get all kinds of visual data from the shipboard radar shortwave antenna in different locations, different frequency,different ships.And draw the related rules and conclusions by comparing visual data in orderto study the optimization of the layout for ship radar shortwave antenna further and provide the basis the security engineering of the electromagnetic ship design, it has great theory significance. |
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