GPS测量中偏心距较大时的归心改正计算方法

在分析规范中GPS归心改正计算公式的基础上,考虑地球弯曲差等因素的影响,推导出了偏心距较大时GPS归心改正计算的严密公式.采用该公式计算了多组实验数据,并与采用规范公式和严密导线平差的计算结果进行了比较.结果表明,偏心距较大时,采用该公式的计算精度远远高于规范公式,在1 500m以内可以达到严密导线平差的精度水平.

Correction for Centring of Long Deflection Distance in GPS Surveying

Specifications for GPS surveys presents the correction formula of centring in GPS surveying,which is based on the short deflection distance.In the paper,we take into account the earth curve error and other factors,get the accurate correction formula of centring as a result,which is fit for the long deflection distance.Respectively with the two formulas,in addition to the traverse network adjustment,many groups of experimental data were calculated.The conclusion is drawn that when the deflection distance is ...