闭合导线测量外业工作《数字测图》教学课件

闭合导线测量外业工作2、角度、距离观测目录1、任务描述任务描述某测区图根控制测量采用闭合导线，导线示意图如下：M、A点坐标已知，M（1555.854m,6527.581m）

A（1508.200m,6624.623m）MACDβ0βAβBβCβDB角度测量边长测量导线定向βAβBβCβDDDADCDDBCDABDABDBCDCDDDAβ0转折角连接角导线边长1角度、距离观测MACDβ0βABDADDAB测站觇点读数（°′″）平均读数（°′″）一测回归零方向（°′″）角值（°′″）盘左盘右AM

D

B

边名平距观测值（m）平距中数（m）边名平距观测值（m）平距中数（m）AD1AB12233440

02

10

MBD108

52

56200

32

4520

32

35288

5243180

02

000

02

05108525020032400000010850452003035A120.738120.736120.736120.738129.958129.957129.958129.958129.958120.737观测β0、βA、DAD、DABβ0=200°30′35″2βA=91°39′50″MACDBACB观测βB、DBA、DBCDBADBCβB测站测回竖盘位置目标度盘读数（°

′

″）半测回角值（°

′

″）一测回角值（°

′

″）各测回平均角值（°

′

″）B0023090145418002402701503901224901223901224边名平距观测值（m）平距中数（m）边名平距观测值（m）平距中数（m）BA1BC1223344129.960129.960129.960129.960129.960147.325147.325147.325147.326147.3251左右ACAC2角度、距离观测MACDBDCB观测βC、DCB、DCDDCDDCBβC测站测回竖盘位置目标度盘读数（°

′

″）半测回角值（°

′

″）一测回角值（°

′

″）各测回平均角值（°

′

″）C00300783610180030725836157833107833087833091左右BDBD边名平距观测值（m）平距中数（m）边名平距观测值（m）平距中数（m）CB1CD1223344147.322147.324147.324147.322147.323136.655136.657136.655136.657136.6562角度、距离观测MACDBDCA观测βD、DDC、DDADDCDDAβD测站测回竖盘位置目标度盘读数（°

′

″）半测回角值（°

′

″）一测回角值（°

′

″）各测回平均角值（°

′

″）D00230993640180024527936509934109934059934081左右CACA边名平距观测值（m）平距中数（m）边名平距观测值（m）平距中数（m）DC1DA1223344136.653136.653136.653136.653136.653120.736120.736120.736120.736120.7362角度、距离观测观测数据略图MACD200°30′35″91°39′50″90°12′24″B78°33′09″99°34′08″AD=120.737DA=120.73