| Phased array technology is the direction of radar technology development both at home and abroad. The phased array radar also becomes the main ship-borne equipment for advanced naval vessels. With the extended radar detection coverage, the output power of radar is also increased consequently. As the influence of radar electromagnetic wave on human gradually known to the world, the concern of maintaining the existing detection coverage while reducing the electromagnetic radiation strength to avoid the its influence on maintenance personnel and people work on deck becomes one of the focus when designing the ship-borne phased array radar.This paper firstly analyzes the configuration of ship-borne radars in both domestic and international markets, the influence of radar electromagnetic radiation and corresponding judgment standards. Based on the analysis, it establishes the simulation model in particular, analyzes the antenna radiation field strength distribution, and puts forward the methods of reducing both average and maximum electromagnetic field strength. Consequently, the paper provides appropriate technical measures by adopting phase weighting method along with simulation analysis and actual measurement.Adopting phase weighting method to reduce electromagnetic field strength is important for design of ship-borne high power radar. Since there are lots of measuring points in actual conditions, it is impossible to cover entire radiation area in actual measurement. In this regard, adopting the simulation analysis for the same purpose provides a good practical example for similar situations. |
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