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一、概况根据《铁路航测》1977年第1期(总第5期)上刊登的“改装СТД—2立体量测仪用于测制有数字地貌特征的1:2000发形图”译文介绍,我们对立体量测仪的放大镜及视差螺旋手轮等部位进行了改进,以提高立体量测仪的高程量测精度。先后经过三次对四台立体量测仪进行改进,并由13名同志共48人次量测7279个点。试验结果表明:用苏联的标准检查板模拟像对进行测试,改进后比改进前测点精度提高23.5%～52.9%;用裱板
I. Overview According to the translation introduction of “Modified СТД-2 stereo measuring instrument used for measuring 1: 2000 hair figure with digital topographic features” published in “No. 1” (No. 5) of “Aerial Survey of Railways” We have improved the magnifying glass and the parallax spiral handwheel of the stereo measuring instrument so as to improve the accuracy of the height measurement of the stereo measuring instrument. After three times to improve the three-dimensional measuring instrument, and a total of 48 by 13 comrades measuring 7279 points. The test results show that: with the Soviet Union’s standard inspection board to simulate the test, improved than before the improvement of measuring point accuracy of 23.5% ~ 52.9%; with board