Development of Photogrammetric Testing and Evaluation Procedures. Phase 2. Testing and Evaluation of Photogrammetric Systems

摘要

A photogrammatric test area with dimensions of 3000 by 6000 feet and 470 feet of relief was established for the purpose of evaluating the accuracy of aero-triangulation and mapping systems. This test area is used to evaluate aero-triangulation accuracy of sequential and simultaneous adjustments and the accuracy of semi-analytical aerotriangulation using three different plotters. Factors which affect aero-triangulation accuracy such as bridging distance between control points, control configurations, amount of sidelap, control errors, mono vs. stereo comparator readings, flying height, color vs. black and white photography, and diapositives printed with emulsions in contact vs. through the film base are tested. The test area is also used to develop and verify semi-analytical photogrammetric procedures, in lieu of field survey procedures, for checking the accuracy of maps compiled under production conditions.