Design and Implementation of the Mobile Metrological Support System of Mapping Devices
|School||PLA Information Engineering University|
|Course||Surveying and Mapping Engineering|
|Keywords||mobile metrology calibration mobile comparison method surveying uncertainty|
The basic task in mapping devices metrology is calibrating and correcting the devices being inspected, so then ensure accuracy of the value and unification of the measuring unit. The traditional metrological support system can be used only in the laboratory, is not applicable for the field devices, so the working state of devices is limited. In the operation spot, if the small maneuver metrology station can be established fast and in real time, it can meet the demands not only of usual periodic examination, but also of emergency operation support in wartime. In order to support surveying and mapping equipments execute various tasks, and realize the goal of metrology support that is’rapid maneuvering, forceful military supply’, the mobile metrological support system of mapping devices should be established.The paper analyzed and demonstrated the metrological support demands of mapping devices such as total station instrument, distance measuring instrument, GPS receiver, theodolite and level. The paper developed the surveying standard devices of mobile angle, length and frequency, and innovated a new method which named’mobile comparison method’to calibrate additive constant of total station instrument. The paper analyzed the repeatability, stability and surveying uncertainty of various mobile standard devices, and compared the consistency of mobile and fixed standard devices. The paper analyzed and proved the technical performance of the system can meet the demands of mobile metrological support. The system filled the gap in mobile metrological support of mapping devices.