如图3-1,已知A(100m,100m)、B(200m,200m),方位角α0=

昕玥2020-05-20  5

问题 如图3-1,已知A(100m,100m)、B(200m,200m),方位角α0=45°。测量A点到P的水平距离D=38m,观测水平角β=52°。由极坐标法计算界址点P的坐标,其结果是(  )。图3-1A、(126.87m,126.87m)B、(123.40m,129.94m)C、(95.37m,137.73m)D、(195.37m,237.72m)

选项

答案C

解析根据界址点坐标的计算公式计算如下:XP=XA+D?cos(α0+β)=95.37m;YP=YA+D?sin(αo+β)=137.73m。
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