异常海洋大气条件下红外与微波折射特征差异研究

研究了海上异常折射环境对于雷达微波和远红外波段的影响,利用近海面大气折射环境数值模型以及福建平潭和西沙永兴岛的海洋环境观测数据对两个波段进行了对比.结果表明,当雷达微波出现负折射时,红外波段却出现"波导"超折射特征,但强度和厚度较弱;当微波出现大气波导时,红外波段多为负折射特征.该项研究可为复杂海洋大气环境下两种探测系统的优化配置以及海洋环境对舰载光电探测系统的影响研究提供科学参考.

Difference between the Refraction Character of Infrared and Microwave under Marine Abnormal Environment

The influence of the marine anomalous refraction environment on the radar microwave and the far infrared wave band is researched, contrasted with two wave bands using the atmosphere refraction numerical model near sea surface as well as the marine environment observation data of Pingtan Island, Fujian and Woody Island, Xisha. The result shows that,when the radar microwave presents subrefraction, the infrared wave band actually presents"ducting" , but the intensity and thickness are weak; when the microwave presents the atmospheric duct, infrared wave band displays subrefraction mostly.This research may provides the scientific reference for two types of detection system' s optimized disposition as well as the effects of the marine environment on electro-optical sensors.