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Base and Rover setup

Introduction#

This tutorial will show how to set up two Reach M2 or Reach M+ devices as a base and a rover with the correction link over Wi-Fi.

Other use cases

For setting NTRIP base corrections, follow the steps from the Working with NTRIP service guide.

Rename Reach devices#

By default, every Reach has the same name. To distinguish between the base and the rover in the field, you need to rename them. Follow the steps below:

How to define Reach?

To understand which unit you are connected to, tap the lamp-shaped button next to the Reach's name. All LEDs on your unit will blink simultaneously.

  1. Connect to Reach you want to use as a base.
  2. Go to the General settings screen and change the name to reach-base. This name will also be used as a Wi-Fi network label when Reach is in hotspot mode.
  3. Press Save.

Do the same with the second Reach. However, use reach-rover name instead of reach-base.

Set up base station#

Now you need to configure RTK settings on the base. Follow the steps below:

  1. Connect to Reach you want to use as a base.
  2. Open the GNSS Settings screen and select the satellite systems depending on what Reach device is used.

Pick each of the satellite systems. Set the update rate at 1 Hz.



After configuring RTK settings, you need to set up broadcasting RTK corrections via TCP. Follow the steps below:

  1. Navigate to Correction output screen.
  2. Choose TCP server.

tip

By default, the base will be configured as a localhost on the TCP port 9000.

  1. Go to the Base mode screen and wait until the base averages its position.
  2. In the list of RTCM3 messages, select to output the messages depending on what Reach device is used.

Select to output ARP station coordinates at 0.1 Hz, MSM4 messages at 1 Hz, and GLONASS code-phase biases at 0.1 Hz.



Set up rover#

When you are ready with the base, you need to configure RTK settings on the rover. Follow the steps below:

  1. Connect to the rover unit.
  2. Go to GNSS settings.
  3. Set the positioning mode to Kinematic.
  4. Select the same GNSS systems as for the base.
  5. Set 5 Hz update rate.
  6. Press Apply.

When you are ready with the base, you need to configure RTK settings on the rover. Follow the steps below:

  1. Navigate to the Correction input screen.
  2. Choose the TCP client correction mode.

  1. Add the base IP adress in the Address field.
  2. Add the base correction port in the Port field.

  1. Tap Save to apply settings.
  2. Go to the Status screen. If everything is configured correctly, you will see the Receiving corrections notification.

View results#

You can see the current solution status in the top right corner of the app.

  • SINGLE means that the rover has found a solution relying on its own receiver and base corrections are not applied. Precision in standalone mode is usually meter-level

  • FLOAT means that the base corrections are now taken into consideration

  • FIX status means all ambiguities are resolved and RTK solution is centimeter-level accurate

After a short period of time, the rover gets a fixed solution. In good environments, it will take a few minutes to get a fixed solution. In tough conditions, it may take a little longer. Once rover gets the FIX status, you are all set for work.

You can also find the current solution status as well as your position in real time on the Status screen.

note

For more information on placing the receivers, please consult the Antenna placement guide.