摘要
利用HJ-1B热红外波段数据进行了水表温度反演。数据定标后,利用水体指数对HJ-1B热红外数据进行了水体识别,识别后直接对水体区域进行编程处理。在模型方面,考虑了HJ-1B热红外通道波谱响应函数的影响,利用MODTRAN4模型修正了Jimenez-Munoz和Sobrino提出的单通道算法,算法的参数"水汽含量"从MOD05水汽产品中取得。最后利用相同时间段内MODIS的海表面温度产品进行了验证,结果显示在抽取的1211个验证点中相对误差在5%以下的占78.695%,可以认为利用HJ-1B热红外数据进行水表面温度反演是可行的。
In this paper,the thermal infrared band data of HJ-1B are used to retrieve water surface temperature.After calibration,the water index is used in the procedure of identifying the water body,in accordance with which the routines for the desired district of water are compiled.In terms of the model,the MODTRAN4 has employed to revise the mono-channel algorithm proposed by Jimenez-Munoz and Sobrino,considering the HJ-1B thermal infrared channel spectral response function.The parameter ＂content of vapor＂ in algorithm is obtained from the MOD05 vapor product.At the end,the effectiveness of result using MODIS sea surface temperature products are verified,and compared with the HJ-1B data of the same time.And the result shows that there are 78.695% among the 1211 validation points have the relative error less than 5%.So it is feasible to apply the HJ-1B thermal infrared data to retrieve the water surface temperature.
出处
《遥感信息》
CSCD
2011年第2期9-13,共5页
Remote Sensing Information
基金
国家科技支撑计划(2008BAC35B03)和(2008BAC34B02)
