AN APPROACH TO POSITIONAL QUALITY CONTROL METHODS FOR AIRBORNE INSAR HIGH-RESOLUTION X-BAND ORTHOIMAGES AND P-BAND DIGITAL TERRAIN MODEL

Abstract: The positional validation of datasets is an important step for cartography studies since it allows learning about its accuracy, and also indicates the data process quality. However, Synthetic Aperture Radar (SAR) have some additional challenges when compared to optical images due geometric distortions. We employ existing targets such as traffic signs lampposts in scene identify them on image control points. performed geographic coordinates used planialtimetric points, using both amplitude backscattering orthoimage Digital Terrain Model (DTM) generated from InSAR system. employed NMAS, ASPRS NSSDA tests along with information by Brazilian Standards. This showed these points presented following results 1:10,000 scale: NMAS test - class “A” PEC PEC-PCD; RMSE x = 1.317m, y 1.231m z 1.145m; r 1,802m, Precision 3.118m 2.244m. These prove we can use proposed meet expected quality generation geotechnic products scale.