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第二次世界大战的珍珠港事件及其以后的珊瑚海、中途岛等海战,充分显示了飞机对水面舰艇的致命威胁,为此,一些国家的海军便致力于完善水面舰队的防空早期预警指挥体系。在二次大战期间,为及早发现来袭敌机,除了依靠航空母舰本身与护航舰只上配备的搜索雷达外,有的国家海军通常还在舰队外围部署配备有远程雷达的驱逐舰,以延伸舰队的对空侦测距离。虽然这种部署在舰队外围的雷达哨戒舰在争取更长的预警时间上有一定的功效,但由于舰载的雷达会受限于地球表面曲率的影响,所以仍无法侦测到距离较远的海面目标。虽然提高雷达安装位置的高度可增加侦测海面目标的距离,但即使安装在军舰桅杆上,雷达天线的高度还是太低,
The Pearl Harbor incident of World War II and subsequent naval battles such as the Coral Sea and Midway Island fully demonstrated the deadly threat of the aircraft to surface ships. For this reason, the navies of some countries are committed to improving the command of early warning of air defense of surface fleets system. During the Second World War, in order to detect incoming enemy planes early, in addition to relying on search radios equipped with carrier aircraft and escort vessels, some navies usually deployed destroyer equipped with long-range radar on the periphery of the fleet to extend the fleet’s Empty detection distance. Although this type of radar post and marina deployed on the periphery of the fleet has some effect on obtaining longer warning time, the carrier-based radar will be limited by the curvature of the earth’s surface and therefore can not detect the distant Sea goal. Although increasing the height of the radar installation position can increase the distance to detect the sea targets, even if installed on the warship mast, the height of the radar antenna is still too low,