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1.基点的作用: 先说检查点(K.T),检查点的作用是检查仪器工作的状况,因此在选这种点时要能满足,为达到此目的而要求的条件(见规范71条——整理者注),其次,最好选在正常场上。但当驻地不在正常场,那就不必选在正常场上,而选在驻地附近,往返只要增加或减一个常数而已。当检查点距操作员工作地区很远时,要建立辅助的检查点,使他每隔大约两小时就能去这些点上一次。这些辅助的检查点叫基点。根据一天当中在这些点上读数所绘成的曲线,可以做各种改正。虽然布置基点网要花一些时间。但比起用其他方法来进行改正
1. The role of the base point: first checkpoint (KT), the role of the checkpoint is to check the working conditions of the instrument, so in the selection of such a point to meet the conditions required to achieve this purpose (see 71 of the norms - - Finisher Note), secondly, the best election in the normal field. However, when the resident is not in the normal field, it is not necessary to choose the normal field and to be near the resident station, as long as the increase or decrease of a constant only. When the checkpoint is far from the operator’s work area, establish an auxiliary checkpoint so that he can go to these points once every two hours or so. These auxiliary checkpoints are called base points. Various corrections can be made based on the curves plotted at these points throughout the day. Although the arrangement of the base network to spend some time. But compared to using other methods to make corrections