導(dǎo)線測量計(jì)算課件

內(nèi)容提要:四、導(dǎo)線的內(nèi)業(yè)計(jì)算

講題:導(dǎo)線測量內(nèi)業(yè)計(jì)算四．導(dǎo)線的內(nèi)業(yè)計(jì)算——計(jì)算各導(dǎo)線點(diǎn)的坐標(biāo)

（一）幾個(gè)基本公式1、坐標(biāo)方位角(gridbearing)的推算注意：若計(jì)算出的方位角>360°，則減去360°；若為負(fù)值，則加上360°?；颍豪}:方位角的推算123459513065128122123012345已知：α12=300，各觀測角β如圖，求各邊坐標(biāo)方位角α23、α34、α45、α51。解：

α23=α12-β2±1800=800

α34=α23-β3±1800=1950

α45=2470

α51=3050

α12=300（檢查）3、坐標(biāo)反算公式由A、B兩點(diǎn)坐標(biāo)來計(jì)算αAB、DAB

DABABABXy0XABYABαAB的具體計(jì)算方法如下：

（1）計(jì)算：（2）計(jì)算：

（3）根據(jù)ΔXAB、ΔYAB的正負(fù)號判斷αAB所在的象限。

1、幸福的背后2、吐魯番的葡萄熟了（3）若在限差內(nèi)，則平均分配原則，計(jì)算改正數(shù)：

115.10100.09108.3294.3867.85A1234XA=536.27mYA=328.74mA1484318A12341122224970300105170610146241233006（4）計(jì)算改正后新的角值：

3、按新的角值，推算各邊坐標(biāo)方位角。

4、按坐標(biāo)正算公式，計(jì)算各邊坐標(biāo)增量。5、坐標(biāo)增量閉合差(closingerrorincoordinationincrement)計(jì)算與調(diào)整

115.10100.09108.3294.3867.85A1234XA=536.27mYA=328.74mA1484318A12341122224970300105170610146241233006115.10100.09108.3294.3867.85A1234XA=536.27mYA=328.74mA1484318A12341122224970300105170610146241233006（1）計(jì)算坐標(biāo)增量閉合差：導(dǎo)線全長相對閉合差(relativelengthclosingerroroftraverse):

導(dǎo)線全長閉合差:115.10100.09108.3294.3867.85A1234XA=536.27mYA=328.74mA1484318A123411222249703001051706101462412330066、坐標(biāo)計(jì)算根據(jù)起始點(diǎn)的已知坐標(biāo)和經(jīng)改正的新的坐標(biāo)增量，來依次計(jì)算各導(dǎo)線點(diǎn)的坐標(biāo)。K=

=<D1400012000例題：閉合導(dǎo)線坐標(biāo)計(jì)算表點(diǎn)號轉(zhuǎn)折角(右)

改正后轉(zhuǎn)折角

方向角

邊長D(米)坐標(biāo)增量(米)XY改正后增量(米)XY坐標(biāo)(米)XY點(diǎn)號A1234A19703001051706101462412330061122224+12+12+12+12+12484318

1314006206224828436123410554

484318

485.47

+0.09

-0.08x=+0.09y=0.08=

x

+y=0.120225395900理=5400000=測理=60容=405=8954000009703121051718101463612330181122236115.10100.09108.3294.3867.58+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+1612.18545.62448.56472.34415.26490.05441.94350.621234A536.27536.27328.74328.74A+75.91-66.56-97.06+23.78+63.93+86.52+74.79-48.11-91.32-21.8800例題：用EXCEL程序進(jìn)行閉合導(dǎo)線計(jì)算方法2(*)：

（1）計(jì)算角度閉合差：2、坐標(biāo)增量閉合差的計(jì)算（2）滿足精度要求，將fβ反符號平均分配到各觀測角上。右角：左角：其中，的計(jì)算公式如下：例題：附合導(dǎo)線的計(jì)算124.08164.10208.5394.18147.44ABCDXB=1230.88YB=673.45XC=1845.69YC=1039.9843171241600180133617822301934400181130020454301803248B1234CAB567CD8(1)繪制計(jì)算草圖,在表內(nèi)填寫已知數(shù)據(jù)和觀測數(shù)據(jù)(2)角度閉合差的計(jì)算與調(diào)整(3)各邊方向角的推算(4)坐標(biāo)增量閉合差的計(jì)算與調(diào)整(5)推算各點(diǎn)坐標(biāo)。圖表：附合導(dǎo)線坐標(biāo)計(jì)算表點(diǎn)號轉(zhuǎn)折角(右)

改正后轉(zhuǎn)折角

方位角

邊長D(米)坐標(biāo)增量(米)XY改正后增量(米)XY坐標(biāo)(米)XY點(diǎn)號AB5678CD180133617822301934400181130020454301803248124.08164.10208.5394.18147.44B5678C1230.88673.451845.691039.98+8+8+8+8+8+81801344178223819344081811308204543818032561119011243171241600

43032844405030564229433444856+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=0.15022K=

=<D1490012000-2-2-2-1-2+2+3+3+2+2+12-9+90.64+116.66+178.83+81.78+146.90+84.7