Error Handling Method for Improving BDS Monitoring Accuracy of Bridge Deformation

Table 5

System technical parameters.

Project	Content	Indicators
Positioning accuracy^1	Real-time positioning accuracy	Horizontal level is better than 0.2 m	Vertical level is better than 0.5 m
	Postprecise positioning	Horizontal level is better than 0.03 m	Vertical level is better than 0.05 m
Availability^2	Navigation	95.0%
	Positioning	95.0%
Compatibility	Satellite signal	BDS B1, B2; GPS L1, L2; GLO G1, G2
	Data format	Receive raw binary data streams; RTCM3.X
	Receiver equipment	The current mainstream manufacturers of Beidou receiver
Communication mode	Real-time user	3G/4 G/Internet

Note 1: the accuracy value is a one-time medium error. Positioning accuracy refers to the accuracy of the CGCS2000 coordinate system. Note 2: the availability indicator does not consider the availability of a communication network.