Topcon HiPER GD, Operator'S Manual

Page: 92 / 180

Setup and Survey
Topcon HiPer GD and HiPer GGD Operator’s Manual
3-10
Surveying with the Receiver
Your receiver can be used to perform the following types of
surveying:
• Static
• Kinematic
• Real-time kinematic (RTK)
Static Survey
Static surveying is the classic survey method, well suited for all
kinds of baselines (short, medium, long). At least two receiver
antennas, plumbed over the survey marks, simultaneously
collect raw data at each end of a baseline during a certain
period of time. These two receivers track four or more common
satellites, have the same data logging rate (5–30 seconds), and
the same elevation mask angles. The length of the observation
sessions can vary from a few minutes to several hours. The
optimal observation session length depends on the surveyor’s
experience as well as the following factors:
• The length of the baseline measured
• The number of satellites in view
• The satellite geometry (DOP)
• The antenna’s location
• The ionospheric activity level
• The types of receivers used
• The accuracy requirements
• The necessity of resolving carrier phase ambiguities
Generally, single-frequency receivers are used for baselines
whose lengths do not exceed 15 kilometers (9.32 miles). For
baselines 15 kilometers or greater, use dual-frequency
receivers.