导线测量的方法和数据处理

2025-03-15 02:38:49
推荐回答(2个)
回答(1):

简单介绍如下,详细步骤请参阅《测量学》导线测量章节教材,百度文库地址:http://wenku.baidu.com/view/faa5391aff00bed5b9f31d7b.html
1.导线的布设:
导线可布设以下几种形式:
(1)闭合导线;起止于同一已知点的导线
(2)附合导线;起于一个已知点,止于另一个已知点的导线
(3)支导线;起于一个已知点,止于一个未知点的导线。
2.导线测量外业:
(1)踏勘选点和建立标志:请参照国标《工程测量规范》的不同精度导线的主要技术要求进行选点和埋设;
(2)导线边长测量:全站仪测量记录导线各条边的斜距和天顶距,并进行球气双差改正,获取各条边长。
(3)导线转折角测量:导线转折角分为左角和右角,在导线前进方向左侧的水平角为左角,反之为右角。水平角的观测请参照国标《工程测量规范》的技术要求进行。
3.导线测量的内业计算:
(1)角度闭合差的调整:将角度闭合差按“反号平均分配”的原则,计算导线各内角的改正数。
(2)坐标增量闭合差的调整:xy坐标增量闭合差按“反号与边长成正比例分配”的原则,计算各导线点xy坐标增量的改正数.
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回答(2):

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