Karachi, Pakistan.

In The industry has always focused to devise engineering methodologies for establishment and modification of relatively easier methods for any exhaustive process. A number of different technologies have been developed suitable for the detection of the motion or presence of a target at shorter or longer distances. Most of them make use of a small portion of the electromagnetic spectrum, usually ranging from visible light over infrared radiation to radio waves. Specifically for detecting the direction and speed of an unidentified object, Radar detectors using the microwave region produce good results [1],[2]. However the major problem with the microwave Radar systems is that they can be easily detected [3]. Infrared (IR) detectors fall into both the active and passive categories. The paper presents a comparison of the said categories for IR-based ranging and detection. This paper demonstrates the design of detection and ranging unit capable of performing scans of a target at short range. The prototype system uses a PC GUI interface. The model is experimentally tested using the PC-based system and some interesting results were found in the process and in the comparison of various technologies