基于平差理论的不规则曲线数字化数据处理方法

Data Processing Method of Irregular Digitized Curves Based on the Adjustment theory

基于最小二乘原理,建立了GIS中不规则曲线数字化数据处理的严密平差模型,应用附有参数的条件平差方法,给出了不规则曲线数字化数据处理的最优解,讨论了按照该模型处理后数字化数据的精度评定的方法.通过严密平差处理,减弱了GIS不规则曲线数字化数据的误差影响,提高了数字化数据的精度,相对于模拟法理论上更加严密,方法更加简单,对研究GIS的数据质量控制具有实用参考价值.

Based on the theory of least squares estimation, the paper established strict adjustment model for irregular Digitized Curves in GIS. It promoted the optimized solution for the model under the condition adjustment with parameters, and discussed the method of precision evaluation for digitized data. It reduced the influence of digitized data error and improved precision by the strict adjustment. All the researches are of practical reference values to deal with data quality control problems in. GIS.