Based on the analysis of biophysical meaning of spectral parameters

this paper discussed the possible correct way to establish the remote sensing modelfor crop yield estimation. Authors believe that it is the best way to solve this problem by combining info-rmation contained in visible band

near-infrared band and thermoinfrared band data.Results show that it is a necessary step to eliminate non-Lambert effects of targetsbefore AVHRR channel 1 and channel 2 data to be used.The space scale and thenumber of parameters of crop yield estimation will be reduced

if remote sensingmodel for crop yield estimation is successful.It means remote sensing model will bemore practical than other models.