Coherent Light Beam Spotting Sensor Optics for the Battlefield Surveillance

Technological advancement in warfare has wide inclusion of laser-based weaponry. Implementation of a system which is used for identification, detection and recognition of approaching laser radiation on armored combat vehicles is essential. The paper delineates novel configuration to enhance the accuracy of threat detection. This is ensured by the optical design configuration which will reduce stray light issue in linear array of photodetectors. Parameters affecting the detection of accurate angle of incidence are discussed so as to achieve high angular resolution. The detector array is further analyzed to achieve constant angular resolution over the complete field of view. Designing of the front-end optical system is done in a way that there is linear variation between angle of arrival (AOA) and spatial position of the active area of linear detector array. It also focuses attention on the technological challenges in the designing of opto-electronic beam spotting sensor and any variation in beam parameter due to atmospheric hindrance.