| The existing target detection and detection infrared systems mainly include infrared imaging detection system and imaging spectrometer.The infrared imaging detection system has some shortcomings in target recognition,especially in the case of similar shape and size of the target,and the detection effect is not ideal under the condition of long-range and low-resolution.The imaging spectrometer imaging the whole scene,and the obtained hyperspectral data has a lot of useless information,a large amount of data redundancy,and is not suitable for measuring the infrared light of moving targets.Spectrum.The three sets of correlation detection system of ground atlas developed by our research group are designed with common aperture and common light path,which can capture the target by scanning and track the target accurately while infrared imaging.On this basis,aiming at the problems of the application of atlas correlation detection system in space-based load miniaturization and bad space-based environment,the design and research of atlas correlation detection system are carried out,and the performance of atlas correlation detection system is analyzed.In order to provide theoretical support and data validation for Atlas fusion detection and recognition,a simulation method of infrared image/spectrum of typical targets is proposed.Firstly,the design of a spectrum correlation detection system for space-based loads is studied in this paper.Aiming at the application conditions of space-based load,the shape structure,structure composition,optical head cover,servo mechanism,vibration absorption system and thermal temperature control are studied.Secondly,the performance analysis of atlas correlation detection system is carried out in this paper.The calculation models of imaging detection distance and spectral detection distance are proposed.By calculating the signal-to-noise ratio of infrared imaging detection and spectral detection,the detection distance of spectral correlation detection system is obtained,and compared with the measured data.In addition,the process of detecting and identifying true and false targets by Atlas fusion is proposed,including the method of inversion of brightness temperature and reflectance of targets using spectral data,and the inversion results are given by using measured spectral data.Finally,aiming at the scarcity of the existing open Atlas data,a method of infrared image/spectrum simulation is proposed.Specifically: geometric modeling,temperature field calculation,atmospheric model establishment,target image square radiation calculation and image gray level quantization.By comparing and analyzing the simulation results of aircraft and ship targets and the measured data,it can be found that the simulation method in this paper is simple,effective and reliable. |
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