摘要
大气波导是发生在对流层大气中的一种异常折射现象,它能够改变电磁波的正常传播特性,使电磁波传播能量重新分布,可以实现舰载对海雷达的超视距探测,同时也会产生舰载对海雷达的大气波导盲区。文中利用雷达电磁波探测概率分布法评估计算大气波导条件下雷达的盲区分布,针对不同频率雷达受大气波导的影响,分别分析了S、C、X波段雷达在不同波导环境下的盲区分布,给出大气波导条件下舰载对海雷达的补盲措施,为充分利用海上大气波导环境,指导舰船在航行训练过程中发挥雷达的作战效能,提供技术支持。
The atmospheric duct is an abnormal refraction in the atmosphere of the troposphere. It can change the normal propagation characteristics of the electromagnetic wave, so that the propagation energy of the electromagnetic wave is redistributed, so as to realize the over-the-horizon detection of the ship-borne radar at sea. At the same time, the shadow zone of the shipboard radar can be caused by the atmospheric duct. In this paper, by using the detection probability distribution method of the radar electromagnetic wave, it is feasible to evaluate the distribution of the shadow zone brought about by the atmospheric duct. Furthermore, according to the different frequency radar, this paper analyzes the distribution of the shadow zone for the S-band, C-band and Xband radar under the environment of different atmospheric ducts, and the measures of filling the shadow zone are given for the shipboard radar. In order to make full use of the marine atmosphere duct environment and the radar effectiveness during vessel navigation or training, the conclusion of this paper can provide a technical support.
出处
《海洋技术学报》
2017年第6期91-95,共5页
Journal of Ocean Technology
关键词
舰载对海雷达
大气波导
盲区评估
补盲措施
shipboard radar
atmospheric duct
assessment of the shadow zone
measures of filling the shadowzone
