In current warfare scenario stealth and passive threat detection capabilities are considered as prime requirements
to accomplish desired mission by the fighter aircrafts. To improve the stealth of an aircraft, the trend is towards
detecting threats with the help of passive sensors (electro optic or infrared). Current situation caters for systems like
infrared search and track (IRST) and Passive missile warning systems (PMWS). Both IRST and PMWS systems
detect targets of interest by processing IR images acquired in mid-IR region. The prime challenge in IRST system
or PMWS is detecting a moving target of size typically 1~2 pixels in acquired image sequences. The temporal
change caused by moving target in consecutive frames can be considered as one important factor to detect them.
The temporal change caused by moving target is identified through absolute frame differencing of successive
frames. This principle has limitation in application to IRST and PMWS as the imaging sensor with the aircraft is
moving. This motion also imparts temporal change in the acquired images. In this paper authors are proposing a
method for removing the temporal change caused by the platform motion in two consequently acquired frames
using registration process. The proposed method uses the platform attitude information at frame sampling times.
Authors have analyzed the sensitivity of registration process to noisy platform attitude information