Topcon GR-5, Руководство оператора

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Receiver Setup
P/N 7010-1004
4-5
The only information that must be supplied from field observations
when using GR-5 is i) the measured instrument height, and ii) the
measurement method used. The Topcon field and office software will
automatically make all antenna Phase Center adjustments
1
that are
necessary to deliver properly referenced marker coordinates.
1. Measure the antenna height above the control point or marker,
either the slant height or the vertical height.
You may either measure the vertical height to the Antenna
Reference Point (ARP) located at the bottom of the GR-5, or
measure the slant height to the Slant Height Measurement Mark
(SHMM) on the side of the enclosure (Figure 4-3 on page 4-6).
2. Record the antenna height, points name, and start time in the field
notes.
1. Advanced users may choose to configure the applied Phase Center
model that is used for the GR-5, and this may be done using Topcon
application software such as TopSURV and Topcon Tools. This
additional step is optional since Topcon software automatically contains
antenna Phase Center models for all Topcon products, including the
GR-5.
Instead of Topcon's supplied default Phase Center model for GR-5,
alternate or updated Phase Center models (with PCO and PCV data)
may be obtained from various government or private calibration
services. The most widely recognized of these services are the U.S.
National Geodetic Survey (NGS), the International GNSS Service
(IGS), and Geo++ GmbH of Germany. The default Phase Center
models supplied with Topcon products are typically based on absolute
calibration models from NGS.