Research Of Multidimensional Array Aerial Digital Camera Platform Calibration Technology

At present，as the development of Large plane array CCD digital aerial camerasystem and digital image processing having grown in maturity，aerial digital cameraapplication and development has gradually become an important direction of aerialphotogrammetry．TOPDC-4aerial digital camera which is developed by China TopRS TechnologyCo．，Ltd is based on multiple lens imaging, adopt external field stitching technology tointegrate four end of non-metric digital camera，exposure at the same time，correct theimage afterwards，splice into large scale high resolution virtual image with a unifiedprojection center，accomplish high resolution，big range ground cover． It is importantto promote the digital process of the aerial photographic surveying equipment，substitute for the same type of foreign imported products，satisfy the urgent need withhigh accuracy，high resolution aerial images．This paper is on the basis of photogrammetry theory，inquire into the accessmethod of TOPDC-4platform calibration parameters，including multi-disc resectioncalibration method、relative orientation calibration method、multi-disc aerotriangulationcalibration method、restrained line element aerotriangulation calibration method、crossregional air three calibration method．According to the productive practice and largenumber of test results，it emphases on the method of restrained line elementaerotriangulation calibration method and cross regional air three calibration．AsTOPDC-4having the characteristic of big dip，short baseline，study the problem of crossoverlap image matching，inquire into the main principle and process of virtual imagemosaic，by means of flight test prove TOPDC-4system has high work precision，andprove the splicing technology of multidimensional array images correct and reliability．...