Application of DNA03 digital levelling instrument in Yellow-River-Crossing works on mid route of South-to-North water transfer project

This paper presents the planning of Lecia DNA03 digital level data processing,introduces the main process of programming and it′s function,analyses the main excellence of this method and gives some suggestion to sedimentation observation.

Some Points in Using Digital Level;

Function Characters and Surveying Principle of Digital Level of DiNi Series;

Aiming to read data automatically with digital level, the localization algorithm of the double sinusoid barcode staff was studied according to coding principle that different widths of bar code represent different altitudes of staff, which was used in digital leveling to accomplish automatic staff reading.

Algorithm in image recognition for coded level ruler of digital levels;

Introduction to digital levels and measurement algorithm;

Image processing for coded level ruler of digital levels is the critical technology to realize the automatic reading of digital levels.

The electronic digital level DL-101C is introduced in this paper.

The behavior,the characteristics,and the prospects for the application of electronic digital level is introduced briefly in this paper,as the example of electronic digital level DL - 101c which is made by Topcon Corporation of Japan.