根据标尺的影像跳动幅度计算水准折光改正

本文提出了根据水准标尺的影像跳动幅度计算水准折光改正的方法,并且解决了在实际中应用该方法的一些具体问题。为了验证这一新的方法,作者在不同的天气条件和各种复杂的地形条件下做了许多实验。实验结果表明,与现有的其他水准折光改正方法比较,采用该法不仅能有效地消除代表性误差对水准折光改正的影响而且不需要增加额外的气象仪器。同时还具有计算和操作简单的特点,有较高的实用价值。

FINDING THE CORRECTION FOR LEVELLING REFRACTI0N FROM THE MAGNITUDE OF VIBRATION OF A ROD SCALE IMAGE

The method for finding the levelling refraction correction from the magnitude of vibration of arod scale image is developed here, and the problems in applying the method to levelling observationsare resolved. To testify the method, many field tests were conducted under different weather condi-tions and complex terrains. The tests show that compared with other establislied methods, not onlycould the effects of representive error on the levelling refraction correction be eliminated effectivellybut also the need of additional meteorological instruments could be eliminated. At the same time, theapplication of this method to practice is simpler both in operation and computation.