1、内容提要:四、导线的内业计算四、导线的内业计算讲题讲题: :导线测量内业计算导线测量内业计算180左后前180右后前或: 1 1 2 2 3 3 4 4 5 595951301306565128128122122 1212303012345已知:已知:1212=30=300 0,各观测角各观测角如图,求各边坐标方位角如图,求各边坐标方位角2323、3434、4545、5151。解:解: 23= 1212-2 21801800 0=80=800 0 34= 23-31800=1950 45=2470 51=3050 12=300(检查)(检查)DABABXy0XABYAB其中,其中,XAB=XB
2、-XA YAB=YB-YA X XAB AB =D=DAB AB coscos ABAB Y YAB AB =D=DAB AB sin sin ABABDABABXy0XABYABABABABABABABxytgyxD22AB的具体计算方法如下:的具体计算方法如下: ABABABAByyyxxx(1)计算:)计算:ABABABxyarctg锐1 1、绘制计算草图,在图上填写已知数据和观测数据。、绘制计算草图,在图上填写已知数据和观测数据。2 2、角度闭合差、角度闭合差(angle closing error)(angle closing error)的计算与调整。的计算与调整。115.1010
3、0.09108.3294.3867.85A A1 12 23 34 4X XA A=536.27m=536.27mY YA A=328.74m=328.74m A1A1484843431818A12341122224970300105170610146241233006(1 1)计算角度闭合差:)计算角度闭合差: = =测测- -理理 = = 测测-(n-2)-(n-2) 180180(2 2)计算限差:)计算限差:nf40允 115.10100.09108.3294.3867.85A A1 12 23 34 4X XA A=536.27m=536.27mY YA A=328.74m=328.
4、74m A1A1484843431818A12341122224970300105170610146241233006nfV Vii4 4、按坐标正算公式,计算各边坐标增量。、按坐标正算公式,计算各边坐标增量。5 5、坐标增量闭合差、坐标增量闭合差(closing error in (closing error in coordination increment)coordination increment)计算与调整计算与调整 115.10100.09108.3294.3867.85A A1 12 23 34 4X XA A=536.27m=536.27mY YA A=328.74m=328
5、.74m A1A1484843431818A12341122224970300105170610146241233006115.10100.09108.3294.3867.85A A1 12 23 34 4X XA A=536.27m=536.27mY YA A=328.74m=328.74m A1A1484843431818A12341122224970300105170610146241233006(1 1)计算坐标增量闭合差计算坐标增量闭合差:导线全长相对闭合差导线全长相对闭合差(relative length closing (relative length closing error
6、 of traverse):error of traverse): 导线全长闭合差导线全长闭合差: : 测理测测理测yyyfxxxfyx22yxfffXXXDfK/1(2 2)分配坐标增量闭合差。)分配坐标增量闭合差。 若若K1/2000K1/2000(图根级),则将(图根级),则将f fx x、f fy y以相反符号,按以相反符号,按边长成正比分配到各坐标增量上去。并计算改正后的坐标边长成正比分配到各坐标增量上去。并计算改正后的坐标增量。增量。 115.10100.09108.3294.3867.85A A1 12 23 34 4X XA A=536.27m=536.27mY YA A=32
7、8.74m=328.74m A1A1484843431818A12341122224970300105170610146241233006iyyiixxiDDfVDDfVyiixiiVxyVxx115.10100.09108.3294.3867.85A A1 13 34 4X XA A=536.27m=536.27mY YA A=328.74m=328.74m A1A1484843431818A123411222249703001051706101462412330066 6、坐标计算、坐标计算根据起始点的已知坐标和经改正的新的坐标增量,根据起始点的已知坐标和经改正的新的坐标增量,来依次计算各
8、导线点的坐标。来依次计算各导线点的坐标。 12121212yyyxxxK = = D1400012000点号转折角 (右) 改正后转折角 方向角 边 长 D(米) 坐 标增量(米)X Y改 正 后增量(米)X Y坐标(米) X Y点号A1234A1 97 03 00105 17 06101 46 24123 30 06112 22 24+12+12 +12+12+1248 43 18 131 40 06 206 22 48 284 36 12 341 05 54 48 43 18 485.47 +0.09 -0.08x = +0.09y =0.08= x + y =0.120 539 59 0
9、0理=5400000= 测理=60容=405 =89 540 00 0097 03 12105 17 18101 46 36123 30 18112 22 36115.10 100.09 108.32 94.38 67.58+75.93-66.54-97.04+23.80+63.94+86.50+74.77-48.13-91.33-21.89-2-2-2-2-1+2+2+2+1+1612.18545.62448.56472.34415.26490.05441.94350.621234A A536.27536.27328.74328.74A A+75.91-66.56-97.06+23.78+6
10、3.93+86.52+74.79-48.11-91.32-21.880 0用用EXCEL程序进行闭合导线计算程序进行闭合导线计算终已知终计算f)()(始终测理测始终测理测yyyyyfxxxxxfyx180180)()(nn终始右理右理始终180180)()(nn始终左理左理始终理测f 其中,其中,理的计算公式如下:的计算公式如下:例题:附合导线的计算例题:附合导线的计算124.08124.08164.10164.10208.53208.5394.1894.18147.44147.44 ABAB CDCDX XB B=1230.88=1230.88Y YB B= 673.45= 673.45X
11、XC C=1845.69=1845.69Y YC C=1039.98=1039.984343171712124 416160000180180131336361781782222303019319344440000181181131300002042045454303018018032324848B1234CA AB B5 56 67 7C CD D8 8(1)(1)绘制计算草图绘制计算草图, ,在表内填写已知在表内填写已知数据和观测数据数据和观测数据(2)(2)角度闭合差的计算与调整角度闭合差的计算与调整(3)(3)各边方向角的推算各边方向角的推算(4)(4)坐标增量闭合差的计算与调整坐标增
12、量闭合差的计算与调整(5)(5)推算各点坐标。推算各点坐标。点号转折角 (右) 改正后转折角 方位角 边 长 D(米) 坐 标增量(米)X Y改 正 后增量(米)X Y坐标(米) X Y点号A AB B5 56 67 78 8C CD D180 13 36178 22 30193 44 00181 13 00204 54 30180 32 48124.08164.10208.53 94.18 147.44B56 67 78 8C C1230.88 673.451845.691039.98+8+8+8+8+8+8180 13 44178 22 38193 44 08181 13 08204 54
13、 38180 32 561119 01 1243 17 12 4 16 00 43 03 28 44 40 50 30 56 42 29 43 34 4 48 56 +90.66+116.68+178.85+81.79+146.92+84.71+115.39+46.70+107.23+12.38738.33+614.90 +366.41+614.81 +366.53x = +0.09y =0.12= x + y =0.150K = = D1490012000-2-2-2-1-2+2+3+3+2+2+12-9+90.64+116.66+178.83+81.78+146.90+84.73+115.42+107.26+46.72+12.40+614.81+366.531321.521438.181617.011698.79758.18873.60980.861027.581119 00 24理=11190112= 测理=48容=406 =98用用EXCEL程序进行附合导线计算程序进行附合导线计算