利用微机-数字化仪量算土地资源面积的研究

A STUDY OF LAND RESOURCES MEASUREMENTS AND CALCULATIONS USING IBM-PC-TABLET SYSTEM

根据微机-数字化仪的工作原理,采用梯形面积的算法公式,按土地详查中面积量算规则的要求,设计了一套从数据采集、面积计算、评差、汇总统计及结果输出的BASIC程序.对软件系统的结构、量算方式及精度等问题进行了分析研究及改进.本系统与其它量算方法比较,具有精度高、速度快、直观、易于操作等优点,可在图件面积量算方面广泛应用.

In this paper, the author reports the desingn of a series of BASIC softwares,involving data gathering,area calculation,error assignment,data collection and statistics and result plotting, according to the working principle of the IBM—PC—TABLET SYSTEM. The methods of data selection and the improving of precision are discussed. On the basis of applied examples,the software system' s property is discussed. The comparison of the system to other methods is made It is found that the system has the advantages of high precison, high speed and can be operated easily, it is suit able for any measurement of any maps.