18
Introduction of hardware
Phase center
91
39.3
94.2
1.4 Static collection and data transmission
Introduction of this chapter:
■ Introduction
■ Static measurement of the receiver
■ U disk-type data download
■ Operation of static management software
Introduction
The collecting static measurement data is stored in the receiver or the memory card. Static data file
needs to be downloaded into the computer and processed by the static post-processing software.
Static measurement of the receiver
1. Set up instrument at the control point and strictly keep the optical plummet centering and leveling.
2. Measure the height of instrument three times and difference among them shall not be more than
3mm, and the average value of them is the final height of instrument. Height of instrument is the
distance from mark-stone center of control point to measurement marker line of receiver.
3. Parameter of the receiver:
◇ Receiver radius:91mm
◇ Height between the bottom of receiver and antenna phase center :94.2mm
◇ Height between measurement line of receiver height and antenna phase center:39.3mm
*If the antenna parameter certificated by NGS is needed, please view
http: //www.ngs.noaa.gov/ANTCAL/Antennas.jsp?manu=HI-Target
5-core socket and 8-core socket
Fig.1.4-1
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