专题图件面积量测中精度与平差问题初探——日产KP-80N型求积仪为量测工具

INITIAL STUDY ON THE ACCURACY SPECIFICATION AND ERROR-DISTRI-BUTING ON THE AREA MEASUREMENT OF SPECIAL SUBJECT MAPS——USING THE KP-80N POLAR PLANIMENTER

笔者根据量测1:1×10~5阿克苏河流域土地利用图的实验数据,从量测技术和被测图幅本身特点入手,探讨了它们与精度的关系.图斑面积量测误差主要与图斑的周长/单位面积值有关,并阐述了依其平差的科学性及按图斑面积比例平差的不合理性.

The paper study the relations between the accuracy specification and the features ofmeasured map sheet and the measurement skill. It shows that the area measurment error re-late compactly with the girth/unit of figures. It not only inter preted the irrationality ofthe error-distributing according to figures area, but also set forth the rationality of the er-ror-distributing according to girth/unit of figures.