平面测量导线闭合差调整一步法

ONE STEP METHOD FOR CORRECTING THE CLOSSING ERRORS OF TRAVERSE IN PLANE SURVEYING

在平面测量中,导线平差,先平内角闭合差,后平座标增量闭合差,分为两个步骤进行。在座标增量闭合差调整中,又分为按边长比例分配、按座标增量值大小比例分配及按累积边长比例分配。这些方法都是简易计算近似平差法,由于内角闭合差调整,会过多干扰导线边的方向角。因而笔者提出:省略内角闭合差调整这一步,将二步简化为一步,简称一步法,使计算更为简化与完善。

In plane surveying, the correcting of clossing errors is traverse of by two steps: Firstly the correct clossing errors of included angles and then, clossing errors of latitudes and departures are corrected. The latitudes and departures may be corrected by proportion the lengths of the legs, or by proportion the latitudes and departures, or else by proportion of comulation of the lengths of the legs. All these methods are approximately correcting methods. The correctoin of included angles may cause excessive disturbance to the bearing and it may be omitted. Thus 'One Step Method' is more simple and theoretically sound.