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1、单单一一附附合合导导线线近近似似平平差差计计算算准准备备数数据据已已知知条条件件:图为单一附合导线,测角中误差m=52,测边中误差mD=0.5Dmm,其它已知数据和观测值列于表中,求各导线点平差值。注:一般规定:1、观测角数n不超过12个,超过时分段平差;2、角度平分有余数时,边长短的多分;3、边长改正数值按边长比例分配。已已知知数数据据点点号号已已知知座座标标起起终终方方位位角角观观测测角角个个数数n=n=5X X(米米)Y Y(米米)度度起起终终方方位位角角(。,,)A843.4001264.290224.0478431224.02 52B1640.9301068.440C5589.970
2、1307.87024.153296924.09 12D793.6101399.190测测得得数数据据点点号号观观测测角角观观测测边边长长观观测测角角属属性性值值kk右右=-1=-1,k k左左=1=11 1度度.分分 秒秒(米米)备注1 114.17 002 146.59 3082.1703 135.11 3077.2804 145.38 3089.6405 158.00 0079.8406789101112测量:记录:计算:复核:日期:2007年3月9日单单一一附附合合导导线线近近似似平平差差计计算算第1页共2页已已知知数数据据角角度度闭闭合合差差W W及及改改正正数数V Vii计计算算:点
3、号座标方位角i备注W=(A_B-kn180+ki)-C_D (公式)X(米)Y(米)度.分 秒=28.662(秒)=0.0028662A843.4001264.290224.02 52Vi=-kW/n (公式)B1640.9301068.440测角属性k=1=-5.73(秒)C5589.9701307.87024.09 12测角个数n=5导导线线边边相相对对误误差差K K计计算算:fx=-0.007fx=-0.007fy=-0.039fy=-0.039D793.6101399.190K=1(Di(fx2+fy2)0.5)=1/8301角角度度平平差差值值ii及及座座标标改改正正值值、平平差差值
4、值、边边长长平平差差值值DiDi计计算算点号观测角i改正数Vi平差后i平差后i观测边长Di座标增量初算座标初算i+Vii-1-kxi+180kDixCOSiDixSINixi-1+xiyi-1+yi度.分 秒秒度.分 秒度.分 秒(米)xi(米)yi(米)xi,fx(米)yi,fy(米)1 114.17 00-5.73114.16 58 158.19 50640.930640.9301068.4401068.4402 146.59 30-5.73146.59 28125.19 1882.170-76.36330.341564.5671098.7813 135.11 30-5.73135.11
5、2880.30 4677.280-44.68263.053519.8851161.8344 145.38 30-5.73145.38 2846.09 1489.64014.77388.414534.6581250.2485 158.00 00-5.73157.59 5824.09 1279.84055.30557.583589.9631307.8316 00.00 000.000.0000000.00000000.0000.0000.0000.0000.0007 00.00 000.000.0000000.00000000.0000.0000.0000.0000.0008 00.00 000.
6、000.0000000.00000000.0000.0000.0000.0000.0009 00.00 000.000.0000000.00000000.0000.0000.0000.0000.00010 00.00 000.000.0000000.00000000.0000.0000.0000.0000.00011 00.00 000.000.0000000.00000000.0000.0000.0000.0000.00012 00.00 000.000.0000000.00000000.0000.0000.0000.0000.000C524.24.0909 1212589.970589.9
7、701307.8701307.870差值 00.00 00-0.007-0.039合计699.2590698.8500328.9300测量:记录:计算:复核:日期:2007年3月9日单单一一附附合合导导线线近近似似平平差差计计算算第2页共2页点号座标改正值平差后座标平差后边长Di 边长改正VDi备注-fxxDj/Di-fyxDj/Dixi+Vxiyi+Vyi(xi2+yi2)0.5Di-Di Vxi(米)Vyi(米)xi(米)yi(米)(米)(米)1640.930640.9301068.4401068.44020.0020.010564.5691098.79182.1720.00230.003
8、0.019519.8881161.85377.2870.00740.0050.030534.6631250.27889.6510.01150.0070.039589.9701307.87079.8480.00860.0000.0000.0000.0000.0000.00070.0000.0000.0000.0000.0000.00080.0000.0000.0000.0000.0000.00090.0000.0000.0000.0000.0000.000100.0000.0000.0000.0000.0000.000110.0000.0000.0000.0000.0000.000120.000
9、0.0000.0000.0000.0000.000C5589.970589.9701307.8701307.870差值0 0 合计328.958示意图:测量:记录:计算:复核:日期:2007年3月9日方位角i闭合差W度度224.04784310.002866224.1532969观测角i平差后i平差后i度度度114.2833300114.2833300158.3311731146.9916600146.9916600125.3228331135.1916600135.191660080.5144931145.6416700145.641670046.1561631158.0000000158.000000024.15616310.00000000.00000000.00000000.00000000.00000000.00000000.00000000.00000000.00000000.00000000.00000000.00000000.00000000.00000000.00000000.00000000.00000000.00000000.00000000.00000000.000000024.153296924.15329690.0028662700.10832700.10832