摘要
针对我国海洋遥感定标检验技术的研究,设计了一种能够自动测量海水表面温度的四波段红外辐射系统,给出了系统的测温原理,并对系统的光学部分进行了设计。系统通过分光镜将入射红外光束分为长波红外光路和中波红外光路,其中长波红外光路通过长波红外滤光片获取三个波段,即8～13μm,10.3～11.3μm和11.5～12.5μm,中波红外光路通过中波红外滤光片获取一个波段,即3.5～4.0μm。给出了各波段对应干涉滤光片的透过率曲线,通过曲线可以看出,长波和中波红外干涉滤光片达到了窄带滤光的预期效果,并对两个光路中载有干涉滤光片用于调制目标红外辐射的长波和中波红外调制盘进行了设计,系统最终的测温精确度可达0.5 K。
An automatic four spectral bands infrared radiometer system was designed for measuring the sea surface temperature. The principle of temperature measurement was given and the optical system was designed, which was divided into long-wave and medium-wave infrared optical system by using a spectroscope. Three long-wave infrared spectral bands were obtained through three long-wave infrared filters in the long-wave infrared optical system, respectively, which were 8- 13μm, 10.3- 11.3μm and 11.5- 12.5 μm. Similarly, a medium-wave infrared spectral band （3.5- 4.0 μm） was acquired by a medium-wave infrared filter in the medium-wave infrared optical system. The film system transmittance curves of the four infrared spectral bands were given, showing that the desired effect about narrow-band light pass was achieved. Furthermore, the modulation reticles in the long-wave and medium-wave infrared optical system were designed to modulate the object infrared radiation. The accuracy of the system was better than 0.5 K.
出处
《红外与激光工程》
EI
CSCD
北大核心
2013年第S02期368-373,共6页
Infrared and Laser Engineering
基金
国家863计划(2008AA09A403)
国家自然科学基金(61201376)
中国科学院西部之光基金(Y129271213)
关键词
海洋光学
自动多波段
红外辐射计
海洋表面温度
红外滤光片
调制盘
oceanic optics automatic multi spectral bands infrared radiometer sea surface temperature infrared filter modulation reticle
