自动空三测量软件 Geolord －AT 与PixelGrid －AT 加密精度比较分析

摘要

航空摄影测量成果具有信息量大、现势性高、直观性强等特点，很多大型项目的测绘工作都选择航空摄影测量的方法，空三加密是航空摄影测量生产过程中的一个重要环节。本文采用两种不同的自动空三软件Ge-olord－AT与PixelGrid－AT，分别对同一区域进行空三加密，并在关键环节上采用有效的剔除粗差的方法，平差后对加密网进行精度分析。%Aerophotographic survey is frequently used in large survey projects.Data produced from aerophotographic survey is charac-teristic of large quantity, authenticity and explicitness.Aerial triangulation is an important procedure in aerophotographic survey.This paper compares the precision analysis derived from two automatic aerial triangulation softwares, Geolord-AT and PixelGrid-AT. Two softwares are applied to the same area.Precision analysis is conducted after the elimination of gross errors and adjustment.