OR/15/057 GNSS system set-up procedures

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Jones, L D. 2015. Ground-based geomatic surveys at the BGS - a manual for basic data collection & processing (2015). British Geological Survey Internal Report, OR/15/057.

Whether you use the Leica System 1200 (SmartRover) dGPS unit (Figure 8) or the Leica Viva RTK GNSS unit (Figure 9) the same basic principles of operation apply. However, there are some differences with the initial set-up procedures and also how the icons/menus appear on the controller unit display screen.

  • Figure 8    System 1200 (SmartRover).
  • Figure 9    Viva.

System 1200 (Smartrover)

The initial set-up procedure for the SmartRover is as follows:

  • Put Battery into Antenna, Controller and Holder. Make sure CF Card is inserted into Controller before inserting Battery.
  • Attach Sleeve to Pole and screw both parts together.
  • Attach Holder to Pole via Clamp, using Clamp Bolt. Adjust as required.
  • Attach Controller to Holder by applying downward pressure on bottom part of Holder, whilst lowering top part of Controller unit it ‘clicks’ in place.
  • Ensure Locking Pin is pushed into position.
  • Attach Aerial to Radio.
  • Attach Antenna to top of Pole.
  • Turn on the Antenna followed by the Controller.

Once everything is on and connected, unit displays the SmartWorx Main Menu (Figure 10) and will say ‘Connected to GS Sensor’ and ‘GSM initialised’.

Figure 10    SmartWorx Main Menu.

In order to record GPS data you need to create and select a job, check the configuration set and antenna, and choose a codelist (if required). From the Main Menu:

  • Tap 1 SURVEY to take you to the SURVEY Begin screen.
  • Tap the Job field to take you to the MANAGE Jobs (CF Card) screen.
  • Press F2 NEW to take you to the MANAGE New Job screen. Enter the Job name (max. 16 characters) in the Name field. Make sure CF Card is displayed in the Device field. Press F1 (STORE) to return to the MANAGE Jobs (CF Card) screen.
  • Highlight the Job and press F1 (CONT) to return to the SURVEY Begin screen.
  • Make sure the correct Config Set (BGS SMART) and Antenna (AX1202 Pole) are chosen. Choose a Codelist if required.
  • Press F1 (CONT) to take you to the SURVEY Survey screen.
  • Press SHIFT followed by F3 (CONECT) to connect to the NTripCastor — this is the RTK network that sends out the RTK corrections directly to the SmartRover.

We need to verify that the unit is receiving RTK transmissions. To do this look at the Top Menu Bar (Figure 11) and note the following:

  • Make sure there are a minimum of 5 Satellites shown on both L1 and L2.
  • Check for a pulsing down arrow — this indicates that RTK corrections are being receive
  • Look for the ‘fixed’ icon, and notice the two ‘tick’ marks — this indicates that ambiguity checks have been completed and solved.
Figure 11    Top Menu Bar.

Before recording the position of a point you need to enter the Point ID and check the following:

  • Antenna Height — this should read 2.000 m.
  • Coordinate Quality (3D CQ).
  • Initialisation Status icon — this should be ‘fixed’ (as above).
  • Hold the Pole level and steady and press F1 (OCUPY) to automatically record the point position.
  • Move to next position and repeat.

When all the points of the survey have been stored the SmartRover can be switched off and packed away. Please do so in the following order:

  • Turn off the NTripCastor by pressing SHIFT followed by F3 (DISCO).
  • Press ESC to exit the SURVEY Survey screen and return to the Main Menu.
  • Press USER and PROG together in order to turn off the Controller.
  • Turn off the Antenna by holding the ON/OFF Button for 5 seconds. The unit can now be taken apart and packed away.

Viva

The initial set-up procedure for the SmartRover is as follows:

  • Put Battery into the Controller and two into the Antenna. Make sure CF Card and SD Card are inserted into the Controller and Antenna respectively.
  • Attach Controller to Pole using Clamp Bolt and Holder. Adjust as required.
  • Attach Antenna to top of Pole and connect RTK Aerial via Arm.
  • Turn on the Antenna followed by the Controller.

Once everything is on and connected, the unit will first ask if you would like to ‘continue with last job’, ‘choose existing job’ or ‘create new job’. Select the appropriate button and press OK.

[See below for how to set-up a new job]

The Viva will now display the SmartWorx Viva Main Menu (Figure 12) and will say ‘connected to GS Sensor’ and ‘GSM initialised’.

Figure 12    SmartWork Viva Main Menu.

In order to record GPS data you need to check the configuration set and antenna height, and choose a codelist (if required). From the Main Menu:

  • Tap 2 Jobs & Data.
  • Select Existing or New Job and press OK.
  • If New: Enter the Job name (max. 16 characters) in the Name field. Make sure CF Card is displayed in the Device field.
  • Press F1 (STORE) to return to the Main Menu.
  • Tap 3 Instrument.
  • Select ‘Other Connections’ then Check Antenna is set to ‘Pole’ and height is 2.000 m. Press Ok
  • Tap 1 Go to Work!
  • In Survey screen, check pole height etc. and enter point name.
  • Press * button and select Start RTK Stream. Unit will say ‘Connected to NTRIP CASTOR’. You’re now ready to begin logging points.

We need to verify that the unit is receiving RTK transmissions. To do this look at the Top Menu Bar (Same as Figure 11) and note the following:

  • Make sure there are a minimum of 5 Satellites shown on both L1 and L2.
  • Check for a pulsing down arrow — this indicates that RTK corrections are being received.
  • Look for the ‘fixed’ icon, and notice the two ‘tick’ marks — this indicates that all ambiguity checks have been completed and solved.

Before recording the position of a point you need to enter the Point ID and check the following:

  • Antenna Height — this should read 2.000 m.
  • Coordinate Quality (3D CQ).
  • Initialisation Status icon — this should be ‘fixed’ (as above).
  • Hold the Pole level and steady and press F1 (OCUPY) to automatically record the point position.
  • Move to next position and repeat.

When all the points of the survey have been stored the Viva can be switched off and packed away. Please do so in the following order:

  • Turn off the NTripCastor by pressing * Stop RTK Stream.
  • Press ESC to exit the SURVEY screen and return to the Main Menu.
  • Press and hold ON/OFF Button on the Controller for 5 seconds. This will turn of the Controller and ask if you want to power off the Antenna. Choose ‘Yes’.

The unit can now be taken apart and packed away.

* Viva attached to VZ-1000

There is one slight differences to the set-up when using the Viva on-top of the VZ-100, namely the Antenna Height should read 0.000 m (zero) rather than 2.000 m.