Abstract:

The water level of the Changjiang river channel varies greatly during the year,leading to a deviation of the sail mark from its original point and a failure to mark the correct channel position,which poses a threat to the boats.In order to improve the efficiency of the maintenance personnel and lower the maintenance cost and workload,the navigation mark telemetering and telecontrol are very necessary.The paper gives the design and application of the sail mark system based on the GSM technique,which has been applied successfully on some channels.

Key words: telemetering and telecontrol;GSM;navigation mark