DEWESOFT DS-VGPS-HS User manual
Real Time Kinematics
RTK
SOFTWARE USER MANUAL
RTK V21-1
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Real Time Kinematics
SOFTWARE USER MANUAL
1. Table of contents
1. Table of contents 2
2. About this document 4
2.1. Legend 4
3. RTK setup options 5
3.1. Features 6
3.2. Requirements 7
4. Scope of supply 8
4.1. Base station 8
4.1.1. Other informations 8
4.2. Rover with internal GNSS 9
4.2.1. Synchronization 9
4.3. Power supply options 10
4.5. System expandability 10
Connections and configurations 11
5. BASE STATION 11
5.1. Fixed RTK Base station 11
5.1.1. Connection 11
5.1.2.2. Set the SATEL modems 12
5.1.2.3. Topcon Receiver Firmware and RTK Options check 13
5.1.3. Configuration 16
5.2. Moving RTK Base Station 20
5.2.1. Additional devices Setup 20
5.2.1.1. Topcon Receiver Firmware and RTK Options check 20
5.2.1.2. Set the SATEL modems 23
5.2.2. Configuration 24
6. ROVER 26
6.1. DS-VGPS-HS, DS-VGPS-HSC, or S-BOX 26
6.1.1. Connection 26
6.1.2. Configuration 28
6.1.2.1. Rover for Fixed RTK Base station 28
6.1.2.2. Rover for RTK Moving Base station 30
6.1.3. SATEL RF modem check 32
6.1.4. Synchronization for any RTK Base station and any RTK Rover 32
6.2. DS-IMU 33
6.2.1. Connection 33
6.2.2. Synchronization 35
7. SATEL RF modem Configuration for different RTK options 36
7.1. Configuration of RF modem with Display 36
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8. Troubleshooting 39
8.1. Reconfiguring PARANI Bluetooth modems 39
9. Warranty information 41
9.1. Calibration 41
9.2. Support 41
9.3. Service/repair 41
9.4. Restricted Rights 41
9.5. Printing History 42
9.6. Copyright 42
9.7. Trademarks 42
10. Safety instructions 42
10.1. Safety symbols in the manual 42
10.2. General Safety Instructions 42
10.2.1. Environmental Considerations 43
10.2.2. Product End-of-Life Handling 43
10.2.3. System and Components Recycling 43
10.2.4. General safety and hazard warnings for all Dewesoft systems 43
11. Documentation version history 46
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2. About this document
This is the users manual for the Real Time Kinematics - RTK module.
2.1. Legend
The following symbols and formats will be used throughout the document.
Important
It gives you important information about the subject.
Please read carefully!
Hint
It gives you a hint or provides additional information about a subject.
Example
Gives you an example of a specific subject.
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3. RTK setup options
There are several different RTK-GNSS options, which are supported in Dewesoft. RTK can be established
either with:
●Internal RTK-GNSS receiver:
○Any Dewesoft GNSS and DS-IMU2 device can be upgraded with RTK licence which
provides accuracy up to 1 cm.
○DS-IMU1 already comes with RTK licence by default in hardware versions 7.0 and above.
The RTK on DS-IMU1 is a single frequency L1 RTK.
●and GNSS/INS platforms (Genesys, OxTS).
For additional information about devices, check the technical specifications on our website.
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Device
Rover
Base
station
DS-VGPS-HS
YES
YES
DS-VGPS-HSC
YES
NO
Embedded
S-BOX receiver
YES
YES
DS-IMU2
YES
NO
Device
Rover
Base
station
DS-IMU1
YES
NO
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SOFTWARE USER MANUAL
3.1. Features
●RTK license upgrade - any Dewesoft 100 Hz GNSS and DS-IMU device can be upgraded with
RTK.
●Dewesoft provides all hardware accessories needed for the RTK upgrade - base station,
antennas and 3G and RF modems for data transmission between car and base station.
●Internal RTK-GNSS receiver achieves up to 1 cm horizontal and 2 cm vertical accuracy.
●Portable and rugged instruments.
●Expandable with SIRIUS slices or DEWE-43.
●Easy-to-install.
●Easy-to-use.
●Many additional synchronized data sources like video, CAN, FlexRay, XCP, OBDII, multi sensor
inputs, advanced counter inputs.
●RTK technique can also be used for accurate relative positions with the use of a movable base
station. The absolute accuracy of this system is as good as is the solution of the moving base
station. However centimeter accuracy between the base station and the rover is achievable.
Movable base techniques are used in ADAS (Advanced Drivers Assistance) tests where relative
position between two vehicles has to be measured.
Image 1: Moving RTK Base station in correlation with RTK Rover for ADAS testing.
Image 2: Moving RTK base in correlation with RTK rover on waterborne vessels.
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3.2. Requirements
Due to the nature and accuracy of RTK solution there are certain requirements that have to be met to
acquire and maintain the RTK fix solution:
●RTK licence installed on used devices (for up to 1 cm accuracy)
●only satellites that are visible to both the base station and the rover can be used in RTK
calculation, RTK receivers normally require at least 5 common satellites,
●the best accuracy is met with clear sky environment and in a good weather conditions - signal
obstructions that cause multipath or cause loss of satellite visibility can cause a loss of RTK fix
and partial or even full recalculation of cycle ambiguity,
●RTK solution is valid only in the range of 15-20 km around the base station, this can be
increased to the maximum of 80 km with the use of a network of RTK base stations NRTK.
Image 3: Example of a fixed base station system setup
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4. Scope of supply
4.1. Base station
DEWESoft directly provides a complete base station based on
DS-VGPS-HS device. As a base station device can also be used
S-BOX with embedded 100 Hz Topcon receiver. Both
mentioned devices need to be upgraded with RTK licence to
provide accuracy up to 1 cm.
4.1.1. Other informations
Base station has autonomous operation and its configuration
and monitoring is resolved via Bluetooth.
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Base station example
GNSS-RTK receiver (DS-VGPS-HS or S-BOX)
Battery pack
RF Modem
RF Antenna
RF Antenna cable
GNSS Antenna
GNSS Antenna cable
RS232-USB converter
Power supply connector for RF Modem and
device (DS-VGPS-HS or S-BOX)
In case built GNSS and RF connector
Mounting bracket for RF Antenna
Mounting bracket for GNSS Antenna
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SOFTWARE USER MANUAL
4.2. Rover with internal GNSS
Dewesoft provides different options that can be used as a rover devices:
●DS-VGPS-HSC,
●embedded 100 Hz S-BOX receiver,
●DS-IMU1,
●DS-IMU2,
●DS-VGPS-HS (only as a standalone rover - see 4.2.1. Synchronization).
4.2.1. Synchronization
-DS-IMU1, DS-IMU2 and DS-VGPS-HSC have an option of synchronisation the measurement data
with any other connected Dewesoft hardware (e.g.: SIRIUS, …).
-DS-VGPS-HS has no sync output, therefore it cannot be directly synchronized with any other
device. If it is used as a rover, it has to be used as a standalone device, where it sends a PPS
signal to the PC.
Important
Usually a computer device is used to collect measured data from the rover. As a computer you
can use either your laptop or a S-BOX with an additional display.
The table below shows the minimal needed equipment for the Rover, where the system can be
extended with various options. Systems in general differ from one to another according to different
setups, so for the exact configuration please contact your regional sales representative.
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Minimal needed equipment for the Rover with internal GNSS in S-BOX
S-BOX receiver with embedded 100 Hz Topcon receiver with RTK license
OPT: Battery pack or cigarette lighter plug cable for S-BOX
GNSS Antenna and vehicle mount
GNSS Antenna cable
RF Antenna
RF Antenna cable
WiFi Antenna
(OPTl: WiFi 3 modem for longer range)
OPT: Mobile display and suction cup
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Image 4: Example of possible equipment combination and setup for RTK Rover with S-BOX and SIRIUS
4.3. Power supply options
Both the base station and rovers need to be powered by a power supply. DEWESoft provides various
power supply options such as:
-Battery Pack 2i or 4i (BP2i, BP4i),
-Cigarette lighter plug cable.
BP2i/BP4i is the most frequently used power supply device. It is used in case you want to remain your
measurement running after a vehicle is already shutted down. If you do not need such measurement
data, you can simply use cigarette lighter plug cable.
4.5. System expandability
You can expand your measurement system by adding DEWESoft DAQ devices and have completely
synchronized measured data between them. For example if you need to have the data from video, CAN,
FlexRay, XCP, OBDII, multi sensor inputs, advanced counter inputs.
Most frequently used devices in RTK applications are:
-SIRIUS and
- DEWE-43.
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Connections and configurations
5. BASE STATION
5.1. Fixed RTK Base station
Image 5: Example of a system with a Fixed Base station
5.1.1. Connection
1. When you receive the base station, you have to unpack the RF and the GNSS antenna and also
the cables and mounting brackets for both antennas.
2. Now assemble the RF antenna and screw the GNSS mounting bracket into the GNSS antenna.
Place both antennas to a position where they can have a clear view of the sky without any
obstructions nearby.
Important
A small hole which is on the black plastic, has to be turned to the ground.
3. Plug the RF antenna cable on one side to the RF antenna and on the other side to the correct
in-case connector, which connects the RF antenna with the RF modem.
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4. Then follow the same procedure for connecting GNSS antenna and DS-VGPS-HS with GNSS
antenna cable. If the RF or GNSS antenna cable are too short, it is possible to extend the line
with extended Antenna cables.
5. Plug power supply cable for RF Modem and DS-VGPS-HS to the Battery pack
6. Connect the Base station to the PC:
a. With a cable:
RS232-USB converter and RS232 cable extender connect to the DS-VGPS-HS and the
other end into the USB port of a laptop or SBOX
b. Over bluetooth connection:
with the supplied Parani-SD1000 modems. The modems come pre-configured with
automatic connection each time the system is powered on. First modem should be
connected to the DS-VGPS-HS and the second modem should be connected directly to
the PC with RS232-USB converter.
In case of losing a connection, the bluetooth modems should be reconfigured. To reconfigure the
bluetooth modems, follow chapter 8.1. Reconfiguring the PARANI Bluetooth modems.
5.1.2.2. Set the SATEL modems
Go to chapter 7. SATEL RF modem configuration for different RTK options and set the SATEL RF
modem.
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5.1.2.3. Topcon Receiver Firmware and RTK Options check
Check the Base station VGPS with Topcon Receiver Utility.
1. Connect the device to your PC, and check in the Device manager on which COM port the device
is connected to.
2. Open Topcon Receiver Utility -> Click on Device -> Choose Connect.
Image 9: Connect to the VGPS in Topcon Receiver Utility application
3. Select Serial Port, elect the proper serial COM port and click Connect.
Image 10: Select Serial Port connection and click Connect button
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4. Go to the Information tab and check if the latest Firmware version is on the device.
It should be: 4.7Feb, 21,2019 p10
Image 11: Open Information icon and check the GNSS Firmware Version
a. If the Firmware is outdated, you have to update it accordingly to the Board type you have
in your device:
You can find the instruction manual on how to upgrade the firmware here and needed
software for doing the upgrade here. Dewesoft should be closed during the update
process.
For upgrading the firmware on DS-VGPS-HSC, a cable to connect RS232 via the display
port connect is needed. For this the device can be sent back to us for a free firmware
upgrade.
5. Go to Options now, and check if everything is set correctly. For RTK option everything should be
set like on the following images (look at the Current column):
Image 12: Check the GPS, GLONASS, L1, L2, Position update rate, and Raw data update rate
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Board
Recommended Firmware
GMSX
4.7.p10
BX10
4.8
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Image 13: Check RTK Positioning, Vertical Accuracy level, and Horizontal Accuracy level
If the settings differ from the listed one, please contact the Dewesof support team on
[email protected].
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5.1.3. Configuration
After connecting all hardware together, run Dewesoft X software to make proper configuration for the
GNSS receiver.
1. Configuration can be done in: Options -> Settings -> Devices
2. In Devices tab under Settings click on button to add a new GNSS device.
3. Then select Dewesoft RS232 device and add it to your Devices window.
Image 14: Select Dewesoft RS232 Device
4. After adding a new device, select its COM port on which you have your RS232-USB converter
connected.
5. Now click the Refresh icon and all the data and parameters from GNSS will be read and
updated automatically.
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6. It is time to Reset receiver to make sure that later there will not be any issues getting GNSS fix.
Image 15: Reset the receiver
7. Set Antenna as Ext. and configure the Update rate of the base station to a desired value
(default is 100 Hz) and set the Receiver mode to RTK Base station.
Image 16: Settings for a Base station
8. Set baud rate at 38400 and press the ‘Set’ button.
Image 17: Select the Baud rate and confirm with Set button
9. By choosing RTK base station the additional area with Base station position appears.
Image 18: Base station position area
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10. The images below show parameters where you have to ‘Read GNSS position’ and then confirm
with ‘Set base position’. By doing this you are changing the coordinates of the Base station to
the current position.
We suggest that you wait for a minute or two, so the receiver has some time to find enough
satellites (ideally above 10) for better accuracy of coordinates. You can check the number of
satellites in the GPS module. Coordinates on images 18 and 19 are marked red, because they are
not set yet.
a. Now start clicking on the ‘Read GNSS position’ button, until the Altitude value becomes
more or less still. You will see a blue text above the button, which says how many satellites
were used to get a position.
b. After successfully reading the coordinates (~ more or less still Altitude value) click on Set
Base position.
Image 19: Red values of the Latitude, Longitude and Altitude mean not set coordinates
Image 20: Click on Read GNSS position button until the Altitude value is more or less still
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Image 21: When Altitude value is almost still, confirm position with click on the Set base position button
11. After configuring the base station you can disconnect the RS232-USB converter and close the
case.
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5.2. Moving RTK Base Station
Image 22: Example of a system with Moving base station
5.2.1. Additional devices Setup
5.2.1.1. Topcon Receiver Firmware and RTK Options check
Check the Moving station’s VGPS with Topcon Receiver Utility.
1. Connect the device to your PC, and check in the Device manager on which COM port the device
is connected to.
2. Open Topcon Receiver Utility -> Click on Device -> Choose Connect.
Image 23: Connect to the VGPS in Topcon Receiver Utility application
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3
Table of contents
