新的考试题库沈阳地铁测量题库2013-11-22

计算假设0度下坐标：

A坐标：X=22904.280+com0°X15.3602=22919.6402 Y=37229.1177+sim0°X15.3602=37229.1177

B坐标：X=22919.6402+ com353°21′51.8″X62.6965=22981.9167

Y=37229.1177+ sim353°21′51.8″X62.6965=37221.87283

C坐标：X=22981.9167+com352°44′45.3″X58.9792=23040.42383

Y=37221.87283+ sim352°44′45.3″X58.9792=37214.42555

GS1′坐标X=23040.42383+com1°43′29.5″X13.3330=23053.75079

Y=37214.42555+ sim1°43′29.5″X13.3330=37214.82687

GS2-GS1′方位=354°32′18.95″ GS2-GS1′距离=150.152339

距离差值： 150.152339-150.1550=-2.7mm

GS2-GS1方位- GS2-GS1′=37°01′27.95″-360=322°58′32.05″ GS2-A方位=322°58′22.41″

a′AB方位角=322°58′22.41″+173°21′51.8″=316°20′14.21″ a′BC方位角=316°20′14.21″+179°22′53.5″=315°43′07.71″ a′CS方位角=315°43′07.71″+188°58′44.2″=324°41′51.91″ 距离改正如下：

GS2-A=-0.0027X15.3602/150.3689=0.28mm A-B=-0.0027X62.6965/150.3689=1.12mm B-C=-0.0027X58.9792/150.3689=1.06mm C-GS1=-0.0027X13.3330/150.3689=0.24mm

改正后距离如下：

GS2-A=15.3602+0.28mm=15.36048 A-B=62.6965+1.12=62.69762 B-C=58.9792+1.06=58.98026 C-GS1=13.3330+0.24=13.33324

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真值计算坐标;

A坐标:X=22916.5425 Y=37219.8677 B坐标:X=22961.8989 Y=37176.5805 C坐标:X=23004.1242 Y=37135.4016 GS1坐标:X=23015.0056 Y=37127.69646

GS2(X=22904.2795，Y=37229.1177);

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