Study on the radiation characteristics of infrared jamming target and the anti-interference capability of infrared imaging system, through the analysis of radiation theory, the experimental study analyzes the change of radiation intensity over time, the radiation intensity of different projection directions and different delivery amount over time, the spectral radiation characteristics of the jamming target and the radiation area of the interference target over time. Combined with the development characteristics of infrared imaging system, it provides the anti-interference effective response strategy of infrared imaging system under practical application condition. The results can provide experimental support for enhancing the anti-interference capability evaluation of the infrared imaging system.
The interference factors produced by the strong radiation interference source in the infrared imaging system are mainly: super-saturation crosstalk effect, spatial transfer characteristic ambiguity phenomenon, halo effect and transient environmental temperature adaptability. These interference phenomena will reduce the imaging of the infrared imaging system, produce instantaneous “blinding” or key information loss, and affect the advantages of the system in target detection, capture, identification and tracking. The formation mechanism and theoretical basis of each influencing factor are analyzed, and the methods of eliminating interference characteristics are studied. Through experimental research, the method of judging the imaging quality of the infrared imaging system at different temperatures is studied. The results show that the temperature adaptability of the infrared imaging system greatly affects the performance of the system detection and recognition. Therefore, the research on the temperature adaptability of the infrared imaging system can provide a basis for the quantitative characterization and simulation calculation of the interference characteristics of strong radiation sources in order to increase the application of the system in the research field and propose ideas for further research.
The optical tracking and measuring on mobile type of large aperture ground-based measurement system can obtain the real-time sequence image information and position information of the target, analyze the motion characteristics of them, monitor and predict the trajectory information of the target in real time. At the same time, it has the characteristics of flexible deployment. In the aspects of in-orbit monitoring and prediction of space debris target, in-orbit live image acquisition and infrared radiation characteristic measurement and analysis of targets, combined with advanced orbit prediction technology, it can be used for real-time trajectory tracking and measurement, and the related physical events in the course of operation can be studied. The detection information is analyzed and processed in real time to obtain he basic conditions for the research of high precision, real environment measurement, multi-state measurement and multi-feature measurement.
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