Geostar GeoS-5 RTK UHF EVK User manual

Quick start for GeoS-5 RTK UHF EVK
www.geostar-navi.com
1. Download and install GeoSDemo5®(and documentation) from http://geostar-
navi.com/en/software/
2. Connect UHF antenna to EVK unit (D).
3. Connect GNSS antenna to EVK unit (G) and place the antenna under clear sky view.
Please find below the recommendations for GNSS antenna placement.
4. Connect EVK’s USB port (B) to a PC (the USB driver will be installed automatically
with GeoSDemo5® software).
5. Switch the EVK unit on (A).
6. Run GeoSDemo5® on PC, select COM ports manually or using autodetect function.
7. LEDs (C) will indicate GNSS operation and UHF communication status.
8. Setup GNSS module for Base or Rover configuration according to marking on EVK
unit.
Quick Start GeoS-5 RTK UHF EVK
Overview
Setup
A B C D
E F G
A. Power On/Off switch
B. USB port
C. LED Indicators
D. UHF antenna connector
E. Reset button
F. Test & Production interfaice
G. GNSS antenna connector
1

www.geostar-navi.com
Configurations by default
•GNSS modules are configured for Rover;
•UHF radio is configured to transmit data for Base station (B) and to receive data for
Rover (R); configuration is unchangeble.
Setup Base station coordinates (Option 1):
•Open menu Set reference ECEF coordinates
•Choose operation mode Coordinates
hold
•Enter GNSS antenna reference ECEF
coordinates, click Ок
•Indication of GNSS operation for Base
configuration
2
Base station setup
Quick Start GeoS-5 RTK UHF EVK

www.geostar-navi.com
Setup Base station coordinates (Option 2):
•Open menu Set reference ECEF coordinates
•Choose Survey-in
•Enter survey-in interval in the range
from 15 to 1440 minutes, click Ок
Recommended time 60 minutes
•Time left to the end of survey-in (sec)
•Indication of GNSS operation for Base
configuration
3
Recommended RTK receiver parameters
•Open menu Set RTK receiver parameters
•To increase quality of RTK operation,
set following values for:
elevation angle mask: 15 degree
signal level mask: 35 dBHz
Quick Start GeoS-5 RTK UHF EVK

www.geostar-navi.com
Since the RTK technology allows calculating position of the object with centimeter-
level accuracy, it is more sensitive for the GNSS antenna placement conditions, in
contrast to the standard accuracy GNSS modules which able to determine the
position with meter-level accuracy in difficult signal reception conditions.
Examples of recommended GNSS antenna placement are shown below.
Recommended GNSS antenna placement
Recommended environments:
•Open sky, elevation angle mask not less 15 degree above horizon. Absence of
objects nearby: buildings, cars, trees, peoples,etc.
•A ground plane under the GNSS antenna reduces the effect of multipath, in case
of using simple and cheap (not geodetic-class) GNSS antenna. A metal sheet with
a radius not less 10 cm, a metal roof of a building or a machine can be used as the
ground plane.
•Ensure that other electronic devices are not located close to the GNSS antenna.
4
Quick Start GeoS-5 RTK UHF EVK
horizon
horizon