用因瓦基线尺进行水平形变测量,都是以因瓦线尺作为长度的标准。几年来,常发生更换基线尺后成果产生阶跃,并有观测成果逐渐增大或减小的现象。究其原因,在于基线尺长度发生了变化,也就是基线尺的长度并不标准。因此,有必要研究基线尺长度的变化规律,规定尺长标定制度,确定对观测成果进行合理改正的方法。 With Invader ruler horizontal deformation measurement, are based on the length of the watt-watt standard. Over the past few years, it often happens that after the replacement of the baseline ruler results in a step, and the observation results gradually increase or decrease phenomenon. The reason is that the length of the baseline ruler has changed, that is, the length of the ruler is not standard. Therefore, it is necessary to study the variation rule of the length of the baseline ruler, specify the scale length calibration system, and determine the method of reasonably correcting the observation results.