The technique of obtaining IR information for MODIS

MODIS is an instrument to satisfy the demand to get more information about the Earth. As part of the information from MODIS, infrared information is important and necessary. It can help us to detect polluted water-areas and so on. For infrared information, the sensitivity is the most impoitant index, which is decided by the detector noise and circuit noise. Methods to reduce the circuit noise level including disturbance are described.