HJ-1B卫星IRS传感器热红外通道交叉定标

来源 :红外与激光工程 | 被引量 : 0次 | 上传用户:tourer
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
以TERRA卫星中分辨率成像光谱仪(MODIS)传感器热红外通道的星上定标结果为标准,采用交叉定标方法获取HJ-1B卫星红外多光谱相机(IRS)传感器热红外通道定标系数。首先,获取两个传感器的对应通道,利用MODTRAN模拟光谱响应、观测角、大气条件和温度变化对匹配因子的影响,然后确定此研究只考虑对应通道的波谱响应和地表温度差异,并计算出不同地表温度下匹配因子的变化趋势。选择7次不同时间双星同步观测青海湖区域的图像作为交叉定标数据,根据MODIS的辐射亮度和匹配因子计算出IRS传感器热红外通道的辐射亮度,最后,将得到的辐射亮度和DN值进行线性回归,获得IRS热红外通道的定标系数。将此次定标结果与HJ-1B卫星IRS传感器热红外通道星上4次黑体定标结果进行比较,定标结果一致性较好。 The calibration coefficients of thermal infrared channels of HJ-1B satellite infrared multi-spectrum camera (IRS) sensor were obtained by using the cross-calibration method based on the satellite calibration results of TERRA satellite MODIS sensor thermal infrared channel. Firstly, the corresponding channels of the two sensors were obtained, and the effects of spectral response, observation angle, atmospheric conditions and temperature on the matching factor were simulated by MODTRAN. Then the difference between the spectral response of the corresponding channel and the surface temperature was determined and the differences were calculated Change Trend of Matching Factors at Surface Temperature. The images of Qinghai lake area were selected as cross-calibration data by seven simultaneous observation of different time, and the radiation intensity of infrared channel of IRS sensor was calculated according to the radiation brightness and matching factor of MODIS. Finally, the obtained radiation brightness and DN value were linear Regression, to obtain IRS thermal infrared channel calibration coefficient. The results of this calibration and HJ-1B satellite infrared IRS sensor thermal infrared channel 4 times the black body calibration results were compared, the calibration results better consistency.
其他文献
塔河油田属于奥陶系油气藏,外输原油物性主要表现为粘度高、密度大(0.9450-0.9510g/cm3)。螺杆泵为容积式泵,压力变化时排量恒定,适用于高粘度油品,运转平稳性,效率高。但是
位于珠三角腹地,隶属广东省佛山市南海区,西樵镇自然风光旖旎,是岭南文化带上的一颗璀璨明珠。镇内著名的旅游景区西樵山是国家5A级旅游景区。  两年多来,在以高质量发展为内涵的“岭南文旅特色小镇”发展战略引领下,围绕“文旅融合城市,产城共融提质”发展主轴,西樵积极探索生态旅游与文化产业融合发展模式,促进文旅兴樵,为西樵高质量发展孕育澎湃动力。  2019年西樵在“全国综合实力千强镇”排名中跃升至25名
器乐演奏对于激发学生学习音乐的兴趣,提高对音乐的理解、表达和创造能力有着重要作用。随着新课程改革的不断深入,音乐教学更需在基础教育领域不断探索创新,有效推进素质教
危险品海上运输由于其货物本身的危险性及海运环境的不确定性,具有很大的运输风险,其安全状况的好坏直接关系到海上人命、财产和环境安全。随着我国海洋经济的不断发展,近年
回 回 产卜爹仇贱回——回 日E回。”。回祖 一回“。回干 肉果幻中 N_。NH lP7-ewwe--一”$ MN。W;- __._——————》 砧叫]们羽 制作:陈恬’#陈川个美食 Back to yield