Abstract:This paper, catering to the need of the study of remote sensing for thermal radiation polarization properties of ground features, detects the thermal radiation multi-angle polarization properties of snow, and makes analysis of effects of four factors, i.e. detecting zenith angle, detecting azimuth angle, bands and polarizing angle, on the thermal radiation properties of snow. The results show that the radiance and brightness temperature of snow increases with the detecting zenith angle. When the detecting zenith angle is greater than 30°, the growth accelerated, and the effect of detecting zenith angle on the brightness temperature of snow is more significant than that of the radiance; the changes in detecting azimuth angle have some effect on the radiance and brightness temperature of snow, and have much influence on the brightness temperature than that of the radiance; the radiance and brightness temperature of snow is significantly affected by the changes in bands, and the effect on the radiance is more significant; the changes in polarizing angle have some effect on the radiance and brightness temperature of the snow, and have much influence on its brightness temperature. The results of the study provide new ideas and methods for the application of remote sensing technology to carrying out the thermal infrared quantitative study of snow, and have important theoretical significance and potential applications.
[1] SONG Kai-shan, ZHANG Bai, ZHAO Yun-sheng, et al(宋开山, 张 柏, 赵云升, 等). Journal of Remote Sensing(遥感学报), 2007, 11(5): 632. [2] XIE Jing-hui, ZHAO Da-zun, YAN Ji-xiang(谢敬辉, 赵达尊, 阎吉祥). Physical Optics Tutorial(物理光学教程). Beijing Institute of Technology Press(北京理工大学出版社),2005. [3] XU Xi-ru(徐希孺). Physics of Remote Sensing(遥感物理). Beijing: Peking University Press(北京: 北京大学出版社), 2005. [4] SUN Xiao-bing, QIAO Yan-li, HONG Jin(孙晓兵, 乔延利, 洪 津). Journal of Atmospheric and Environmental Optics(大气与环境光学学报), 2010, 5(3): 175. [5] CHNE Wei-li, WANG Xia, JIN Wei-qi, et al(陈伟力, 王 霞, 金伟其, 等). Infrared and Laser Engineering(红外与激光工程), 2011, 40(1): 7. [6] XU Can-jun, ZHAO Jin-song, CAI Yi, et al(徐参军, 赵劲松, 蔡 毅, 等). Infrared Technology(红外技术), 2007, 29(7): 381. [7] Felton M, Gurton K P, Roth L E, et al. Comparison of the Inversion Periods for Polarimetric and Conventional Long-Wave IR(LWIR) Imagery Army Research Laboratory, 2009, ARL-TR-4931. [8] Imasu R, Saitoh N, Niwa Y. Retrieval Performance of GOSAT Thermal Infrared FTS Sensor for Measuring CO<sub>2</sub> Concentrations, 2007, Proceedings of SPIE. [9] WANG Zhen, HONG Jin, YE Song, et al(汪 震, 洪 津, 叶 松, 等). Acta Photonica Sinica(光子学报), 2007, 36(8): 1500. [10] SUN Yi-yi, Olesen F S, Fischer H(孙毅义, Olesen F S, Fischer H). Journal of Test and Measurement Technology(测试技术学报), 2006, 20(3): 252. [11] WANG Zhen, QIAO Yan-li, HONG Jin, et al(汪 震, 乔延利, 洪 津, 等). Opto-Electronic Engineering(光电工程), 2007, 34(6): 49.