Simulation of at-sensor radiance over land for proposed thermal channels of Imager payload onboard INSAT-3D satellite using MODTRAN model

被引：7

作者：

Pandya, M. R. ^{[1
]}

Shah, D. B. ^{[2
]}

Trivedi, H. J. ^{[2
]}

Panigrahy, S. ^{[1
]}

机构：

[1] Indian Space Res Org, Ctr Space Applicat, Ahmadabad 380015, Gujarat, India

[2] NV Patel Coll Pure & Appl Sci, Vallabh Vidyanagar, Gujarat, India

来源：

JOURNAL OF EARTH SYSTEM SCIENCE | 2011年 / 120卷 / 01期

关键词：

Earth observation; imager; INSAT-3D; land surface; MODTRAN; simulation; thermal infrared; SURFACE TEMPERATURE;

D O I：

10.1007/s12040-011-0014-4

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

INSAT-3D is the new generation Indian satellite designed for improved Earth observations through two payloads - Imager and Sounder. Study was conducted with an aim of simulating satellite level signal over land in the infrared channels of the Imager payload using a radiative transfer model MODTRAN. Satellite level at-sensor radiance corresponding to all four infrared channels of INSAT-3D Imager payload is obtained using MODTRAN and sensitivity of at-sensor radiance was inferred as a function of input parameters namely, surface temperature, emissivity, view angle and atmospheric water vapour, which is helpful in understanding the signal simulation scheme needed for retrieving a very critical parameter namely, land surface temperature.

引用

页码：19 / 25

页数：7

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