Research on multi-source coherent laser interference mechanism of cluster photoelectric imaging sensors

At present, laser interference is basically a one-to-one interference mode. With the large-scale use of photoelectric reconnaissance sensors, laser interference urgently requires many-to-many interference means for cluster targets. Based on solving the problem of effective suppression of interference in clustered photoelectric detection, a multi-source coordinated coherent laser interference method for cluster photoelectric imaging sensors was proposed, and the basic idea of multi-pair and multi-interference realization was using out-of-field speckle coherent synthetic interference. The coherent interference mechanism was used to model and analyze the effect of two-beam coherent laser interference photoelectric sensor. The simulation results show that the laser incident angle is an important influence parameter of laser coherent interference and can be used as the basis for coordinated deployment of interference stations. At the same time, the image quality evaluation results based on PSNR and MSE show that the coherent superimposed interference has obvious advantages compared with single beam interference and non-coherent superimposed interference.