Simulation And Calculation Of The Millimeter-wave Radiation Of The Moving Aerocraft

At present,the more common target detection methods are visible light,radar and infrared.These detection technologies have encountered bottlenecks and are hard to break through,and corresponding anti detection methods are emerging one after another.Passive millimeter wave radiation detection,as a new means of information acquisition,has attracted more and more attention from scholars.In recent years,the basic theory of millimeter wave radiation detection has been perfected.This paper studies the simulation calculation of the millimeter wave radiation of the moving vehicle,mainly including the following aspects:First,the three-dimensional modeling technology and fluid simulation technology are mastered,and the three-dimensional model of the typical aircraft is obtained by using the SolidWorks software.Then the fluid simulation parameters of the aircraft surface and the surrounding atmosphere are obtained by using the ANSYS fluid simulation kit.Then,we study the simulation method of millimeter wave radiant brightness temperature of complex structure targets in the earth’s atmosphere.Image simulation is based on MATLAB programming language.The simulation process takes full advantage of the earth’s atmospheric radiative transfer,complex structure ray tracing,and surface radiation brightness temperature calculation.Finally,using the imaging simulation method and the fluid simulation parameters,the influence of the motion parameters on the radiation temperature of the millimeter wave radiation is studied.The motion parameters include the flight speed,the flight height and the flight attitude.The variation of the radiant temperature is analyzed,and the semi empirical formula of the radiant temperature based on the motion parameters is summed up.