一种快速准确校正手持式GPS的方法

A Method for Correcting Handheld GPS Fastly and Accuratly

摘要:

目前，手持式GPS已成为地质工作人员必不可少的工具之一，正确使用和校正GPS是每个技术人员必须掌握的。在工作实践中，笔者总结出GPS的显示坐标X，Y变化量与校正参数DX，DY，DZ的变化量的比值（即变化率）在某一地区是一定值（即线性关系），不同地区该定值不同。通过变化量的此种线性关系用解方程法可快速准确地确定DX，DY，DZ参数，且只要满足该方程解的不同组合的DX，DY，DZ均可作为该地区正确的校正参数，从而可准确校正GPS。

Abstract:

At present, handheld GPS has become one of the essential tools for geological staffs. Thus, proper use and correction of GPS should be mastered. On the basis of summarizing practices in many years, it is concluded that the ratio of display coordinate X, Y of GPS and the change amount of tuning parameters of DX, DY and DZ is a certain value in a given region (that is a linear relationship). This certain value is different in different regions. Through variation of this linear relationship, by using the method of solving equations, parameters of DX, DY, DZ can be determined quickly and accurately. If it can satisfy the equation with different combinations of DX, DY, DZ, it can be regarded as the correct calibration parameters. Thus, GPS can be corrected accuratly.