Triangle height survey method using simple total-station meter;

Precision of trigonometrical height surveying is restricted by the precision of vertical angle surveying all along,while the vertical angle surveying precision is mainly affected by atmosphere vertical refraction.

The precision analysis and research on elevation survey ignoring height of the total station instrument

This paper makes an approch to the application technique of total station instrument in highway elevation survey and indicates the conditions and methods of survey for meeting technical demends of highway elevation survey.

According to relevant state specifications and trade standards,as well as combined with actual application,3G HIS,the elevation survey and information system software based on 3G mobile phone is developed by Visual Studio.

By analyzing the accuracy of experimental results and studying the suitability of GPS height-fitting method,the regulation of GPS height converting being followed and the effective method of vertical survey with applying GPS and RTK technology to large-scale topographic surveying and mapping are discussed.

Combining the practical experience and two kinds of different methods of comparing survey, the application of RTK technique in the vertical survey is discussed.