Display To Detect The Polarization Encoding Method To Measure The System Principle

As the rapid development of LASER technology in military field, Electro-Optic Warfare (EOW)has became the important one among modern war. The technology of LASER AOA (Angular Of Arrival) Detection always keeps on developing because of its very importance in EOW.This dissertation chiefly studied the theory of AOA detection using polarization. Polarization coding AOA detection was put forward after compared with some other ways to detect LASER AOA.The method based on law of cosines of radiation. Used arrayed optical receivers to collect LASER energy. Because of the different between AOA and axes of optical receivers, the energy between each receiver was corresponding different. To contrast with each other can show the AOA. This paper insert linear polarized flake in each optical channel to coding the different energy. Then put the light come from the different channels together, the polarization of synthesized light would show the AOA. In order to identify the polarization direction, used polarization beamspliting prism. So just two detectors needed. Some formulas had been offered. The influences of both the operational precision and the measurement precision to the result gone out of the system had been analyzed.Follow the idea, an experimental system has been designed and assembled. After the experiment, the data had been analyzed and the result achieved the intention. So it's some value in project.