Research On Image Stabilization Technology Based On Airborne Laser Countermeasure System

The laser countermeasure system can detect and image the target through laser illumination,track and aim,and then emit laser to interfere or damage the target.It has the advantages of high directivity,anti-interference,light speed attack and extremely high destructiveness.The airborne laser countermeasure system is a strategic laser weapon with high maneuverability.It integrates functions such as reconnaissance and anti-reconnaissance,jamming and anti-jamming,and is a key technology for a new gene ration of airborne weapons.This paper mainly studies the related problems of image stabilization technology of airborne laser countermeasure system,and designs a set of image stabilization system design schemes suitable for airborne laser countermeasure system.Firstly,based on the investigation of the typical target parameters of the airborne laser countermeasure system,the radiation characteristics of the typical target are analyzed and calculated.By analyzing the background radiation characteristics and atmospheric transmission characteristics with MODTRAN software,the scene settings of the target detection imaging and the basic parameters of the airborne laser countermeasure system were preliminarily set.Secondly,according to the typical target i maging characteristics of the airborne laser countermeasure system and the purpose of image stabilization,an appropriate image stabilization algorithm architecture is selected.A low signal-to-noise ratio target detection algorithm is added to the traditi onal image stabilization algorithm architecture,and the difference between laser stabilization system image stabilization and traditional image shift stabilization is discussed during motion compensation.Thirdly,based on the working principle of the air borne laser countermeasure system,the relationship between the tracking accuracy and image stabilization requirements is discussed.The accuracy of the image stabilization system is divided into two parts: target detection recognition accuracy and motion prediction accuracy.The effects of improving the signal-to-noise ratio and increasing the image stabilization frame rate on the two are discussed separately.Establish the image stabilization model of the airborne laser countermeasure system,and design t he image stabilization system design scheme suitable for the airborne laser countermeasure system.Finally,through software programming,simulation experiments are performed on typical target detection imaging,and the relationship between illumination power and imaging signal-to-noise ratio is analyzed.Program and implement the image stabilization algorithm to verify the feasibility of the selected image stabilization algorithm.By combining target detection imaging simulation and image stabilization algorithm,the image stabilization system design scheme is simulated and verified.