Research On The Technology Of Large Space Optical Monitoring For The Geostationary Orbit

The geogstationary orbit is a circular orbit of the 35678 km of the equator,it is the only unique orbit of the human being in space and a very rare and scare resources.Because of the distance of the space target in the orbit,at present,the main monitoring with large diameter,long focal length,high sensitive photoelectric detection system,has strong detdction ability,and existence the problem of small visual field and large airspace monitoring is difficult.The project is aimed at the deficiency of the deficiency of the existing optical monitoring system of geostationary orbit to carry out the relevant technology research:(1)by using the large field of view opitical system of geostationary orbit large space,multi target detection is realiazed by long time gaze exposure;(2)a multiple difference method is proposed for continuous three frame images,which can be quickly and effectively identified from a large numer of stars;(3)a method of angle measurement based on star map matching is proposed,which can be obtained from the image coordinate system to the horizon system,and can be quickly obtained from any pixsl position(x,y)to the azimuth and pitch angle;(4)the change of slow moving target in a stationary orbit is more visually perceived by the time compression technology.Verification of stationary orbit monitoring,the photoelectric system can detect 14 magnitude stars,3 frame difference multiple target recognition method has fast calculation speed,high reliability.The direct conversion model of the image coordinate system to the horizon coordinate system is used to measure the spatial object without the need of a measuring device,the method is not affected by the influence of atmospheric refraction and optical system distortion,and the azimuth and pitch angle are38.8?and29.6?respectively.