摘要
通过误差传播定律分析了经纬仪、全站仪和RTK等3种农地面积测量方法的精度,结果显示:全站仪测量的精度最高,RTK的精度接近全站仪,这两种方法均具有测量速度快、面积广的特点;经纬仪可在低精度的农地面积测量中与电子求积仪配合使用。电子求积仪在图面上的量测精度与比例尺大小、图形的规则程度有关,比例尺愈大其量测精度愈高,图形愈规则其量测精度也愈高。
Methods of farmland area surveying using theodolite,electronic tachometer and RTK were described in this paper.Precisions of farmland area surveying were analyzed by law of error propagation and it was indicated that electronic tachometer had the best precision in the all of instruments.Precision of farmland area surveying using RTK was similar to that of electronic tachometer.RTK could be widely used in large scale and had a time-saving feature.Theodolite only could be used in the farmland area surveying that needed not higher precision.It was also showed that precisions counting graph area with electronic planimeter relate to graph scales and its degree of regularity.The bigger scale and the higher degree of regularity,the higher precision.
出处
《广东农业科学》
CAS
CSCD
2007年第6期44-46,56,共4页
Guangdong Agricultural Sciences
关键词
经纬仪
全站仪
RTK
电子求积仪
面积计算
精度
theodolite
electronic tachometer
real time kinematic
electronic planimeter
area count
precision
