从前方边角交会的精度来探讨《规范》对边角网的图形规定

DISCUSSION ON THE RESTRICTION OF"STANDARD" TO THE FIGURE OF LINEAR-ANGULAR NETWORK FROM THE ACCURACY OF FORWARD LINEAR-ANGULAR INTERSECTION

该文分析了测角交会、测边交会的精度特点 ,通过对前方的边角交会及单三角形边角测量的点位精度的严密推证 ,分析了三角形图形对边角测量的精度影响 ,并通过典型图形的计算验证 ,得出边角测量具有精度互补的优点 ,因此 ,建议《规范》[1,2 ] 对边角组合网的图形限制应适当放宽。该文为今后有关规范的修订提供了理论依据 。

The paper analyses the character of the accuracy of angular intersection and linear intersection. It analyses the influence on the accuracy of triangulateration which produced by the figure of triangle through strict deducing to the point accuracy of forward linear-angular intersection and single triangle triangulateration. It obtains that the triangulateration has the advantage of accuracy complement by calculation and verification of typical figure. Therefore, we propose that the 'Standard' should relax the restriction to the figure of linear-angular network. The paper has provided theoretical basis for the next edition of 'Standard',and it also has the referencial value to accuracy estimate of linear-angular network.