A direct calculation method of IR remote sensing systems' detectability for forest fire

Abstract

IR Remote Sensing is an effective measure of monitoring the forest fire, especially, for those areas which can not be reached by the forest guards themselves or their sightline. We have carried out some analysis about the target resolution of IR line scanner[ 1] . Here, we further offer a direct calculation method of detectable lower limit of fire areas which are smaller than the instantaneous field of view (IFOV) using the systems' practically measured parameter NETD. Starting from the general condition, the sensitive equation is [ 2]