方位角坐標(biāo)正反算

1、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，各觀測(cè)角各觀測(cè)角如圖，求各邊坐標(biāo)方位角如圖，求各邊坐標(biāo)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（檢查）（檢查）DABABXy0XABYAB其中，其中，XAB=XB-XA YAB=YB-YA X XAB AB =D=DAB AB cos cos ABAB

2、Y YAB AB =D=DAB AB sin sin ABABDABABXy0XABYABABABABABABABxytgyxD22AB的具體計(jì)算方法如下：的具體計(jì)算方法如下： ABABABAByyyxxx（1）計(jì)算：）計(jì)算：ABABABxyarctg銳1 1、繪制計(jì)算草圖，在圖上填寫已知數(shù)據(jù)和觀測(cè)數(shù)據(jù)。、繪制計(jì)算草圖，在圖上填寫已知數(shù)據(jù)和觀測(cè)數(shù)據(jù)。2 2、角度閉合差、角度閉合差(angle closing error)(angle closing error)的計(jì)算與調(diào)整。的計(jì)算與調(diào)整。115.10100.09108.3294.3867.85A A1 12 23 34 4X XA A=536

3、.27m=536.27mY YA A=328.74m=328.74m A1A1484843431818A12341122224970300105170610146241233006（1 1）計(jì)算角度閉合差：）計(jì)算角度閉合差： = =測(cè)測(cè)- -理理 = = 測(cè)測(cè)-(n-2)-(n-2) 180180（2 2）計(jì)算限差：）計(jì)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=328.74m A1A1484843431818A1234112222497030010517061

4、0146241233006nfV Vii4 4、按坐標(biāo)正算公式，計(jì)算各邊坐標(biāo)增量。、按坐標(biāo)正算公式，計(jì)算各邊坐標(biāo)增量。5 5、坐標(biāo)增量閉合差、坐標(biāo)增量閉合差(closing error in (closing error in coordination increment)coordination increment)計(jì)算與調(diào)整計(jì)算與調(diào)整 115.10100.09108.3294.3867.85A A1 12 23 34 4X XA A=536.27m=536.27mY YA A=328.74m=328.74m A1A1484843431818A123411222249703001051706

5、10146241233006115.10100.09108.3294.3867.85A A1 12 23 34 4X XA A=536.27m=536.27mY YA A=328.74m=328.74m A1A1484843431818A12341122224970300105170610146241233006（1 1）計(jì)算坐標(biāo)增量閉合差：）計(jì)算坐標(biāo)增量閉合差：導(dǎo)線全長(zhǎng)相對(duì)閉合差導(dǎo)線全長(zhǎng)相對(duì)閉合差(relative length closing (relative length closing error of traverse):error of traverse): 導(dǎo)線全長(zhǎng)閉合差導(dǎo)線全

6、長(zhǎng)閉合差: : 測(cè)理測(cè)測(cè)理測(cè)yyyfxxxfyx22yxfffXXXDfK/1 若若K1/2000K1/2000（圖根級(jí)），則將（圖根級(jí)），則將f fx x、f fy y以相反符號(hào)，按以相反符號(hào)，按邊長(zhǎng)成正比分配到各坐標(biāo)增量上去。并計(jì)算改正后的坐標(biāo)邊長(zhǎng)成正比分配到各坐標(biāo)增量上去。并計(jì)算改正后的坐標(biāo)增量。增量。 115.10100.09108.3294.3867.85A A1 12 23 34 4X XA A=536.27m=536.27mY YA A=328.74m=328.74m A1A1484843431818A12341122224970300105170610146241233006i

7、yyiixxiDDfVDDfVyiixiiVxyVxx115.10100.09108.3294.3867.85A A1 13 34 4X XA A=536.27m=536.27mY YA A=328.74m=328.74m A1A1484843431818A123411222249703001051706101462412330066 6、坐標(biāo)計(jì)算、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，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(lái)依次計(jì)算各導(dǎo)線點(diǎn)的坐標(biāo)。來(lái)依次計(jì)算各導(dǎo)線點(diǎn)的坐標(biāo)。 12121212yyyxxxK = = D1400012000點(diǎn)號(hào)轉(zhuǎn)折角 (右) 改正后轉(zhuǎn)折角 方

8、向角 邊 長(zhǎng) D(米) 坐 標(biāo)增量(米)X Y改 正 后增量(米)X Y坐標(biāo)(米) X Y點(diǎn)號(hào)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 00理=5400000= 測(cè)理=60容=405 =89 540 00 0097 03 12105 17 18101 46 36123 30 1

9、8112 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+63.93+86.52+74.79-48.11-91.32-21.880 0用用EXCEL程序進(jìn)行閉合導(dǎo)線計(jì)算程序進(jìn)行閉合導(dǎo)線計(jì)算終已知終計(jì)算

10、f)()(始終測(cè)理測(cè)始終測(cè)理測(cè)yyyyyfxxxxxfyx180180)()(nn終始右理右理始終180180)()(nn始終左理左理始終理測(cè)f 其中，其中，理的計(jì)算公式如下：的計(jì)算公式如下：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 XC C=1845.69=1845.69Y YC C=1039.98=1039.984343171712124 4161600001801801313363617817822223

11、03019319344440000181181131300002042045454303018018032324848B1234CA AB B5 56 67 7C CD D8 8(1)(1)繪制計(jì)算草圖繪制計(jì)算草圖, ,在表內(nèi)填寫已知在表內(nèi)填寫已知數(shù)據(jù)和觀測(cè)數(shù)據(jù)數(shù)據(jù)和觀測(cè)數(shù)據(jù)(2)(2)角度閉合差的計(jì)算與調(diào)整角度閉合差的計(jì)算與調(diào)整(3)(3)各邊方向角的推算各邊方向角的推算(4)(4)坐標(biāo)增量閉合差的計(jì)算與調(diào)整坐標(biāo)增量閉合差的計(jì)算與調(diào)整(5)(5)推算各點(diǎn)坐標(biāo)。推算各點(diǎn)坐標(biāo)。點(diǎn)號(hào)轉(zhuǎn)折角 (右) 改正后轉(zhuǎn)折角 方位角 邊 長(zhǎng) D(米) 坐 標(biāo)增量(米)X Y改 正 后增量(米)X Y坐標(biāo)(米)

12、X Y點(diǎn)號(hào)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 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+1