摘要
基于全站仪测图方法,阐述了全站仪测图的误差来源。结合《工程测量规范》大比例尺测图的精度要求,采用其规定的最大限值,对全站仪测图点位误差的大小进行了分析和估算。从估算结果来看,全站仪测图的点位误差主要来源于测角引起的误差,尤其是目标(镜站)偏心导致的测角误差。在大比例尺测图中,全站仪半测回方向法的点位精度虽可完全满足《规范》限差要求,但在实际测量作业中仍要采取有效措施和手段对待测地物点偏心及测距长度加以控制,以便获取更高精度。
Based on total station mapping method,error sources of total station mapping were described herein.Following the requirements on accuracy of large scale mapping in the ＂Code for Engineering Surveying＂ and applying the maximum limit value,errors in point measurement in total station mapping were analyzed and estimated.From estimated results,errors in point measurement are mainly from angular measuring,especially from target（prism station） eccentricity.In large scale mapping,although positional accuracy from total station semi-observation direction method can satisfy the Code＇s tolerance requirement,but in practice still need effective measures and means to control eccentricity and distance of surface features for higher accuracy.
出处
《中国煤炭地质》
2010年第B08期111-112,119,共3页
Coal Geology of China
关键词
全站仪
大比例尺测图
点位误差
total station
large scale mapping
error in point measurement
