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Correction data forwarding – Add-In

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Correction data forwarding into the network is a free additional functionality (Add-In) of the ADMA.

Note: For being authorized receiving DGNSS correction data via ethernet a license is required.

The DGNSS correction data forwarding functionality of the ADMA allows to transmit correction data from one ADMA to another. By using the Ethernet Broadcast function multiple ADMA’s can be provided. This functionality can reduce your workload and costs. For example: if you are performing an urban or interurban AEB test, from now on only one NTRIP-Box will be needed.

Figure 1: DGNSS Correction Data via Wireless LAN

The following diagram shows an example wiring of the Master-ADMA.

Figure 2: Example wiring diagram of the ADMA

Setup and configuration

The ADMA systems communicate via UDP. They use datagram sockets to establish host-to-host communications. An application binds a socket to its endpoint of data transmission, which is a combination of an IP address and a service port.

Port numbers are 16-bit integer values, which tag individual file formats to be identified. We recommend using port numbers ranging between 1024 and 65535. For different data outputs, like the correction data forwarding, separate service ports have to be used.

Destination IP/Port number
This field identifies the receiver’s IP/Port and is required. Similar to source port number, if the Client-ADMA is the destination host then the port number will likely be a well-known IP and port number of the Master-ADMA. To use the Ethernet Broadcast function set the last character of the destination IP to 255.

Source IP/Port number
This field identifies the sender’s IP/Port. If the source host is the Client-ADMA, the port number is likely to be a well-known IP and port number of the Master-ADMA.

The IP settings of the ADMA Ethernet ports can be changed on menu 2️⃣ DATA LINK. The DGNSS correction data via Ethernet settings can be set on menu 5️⃣ AUX-SYSTEM.

In the following diagram an example configuration of the DGNSS correction data forwarding to another vehicle is provided.

Figure 3: Example of ADMA DGNSS correction data forwarding

1 To send the DGNSS correction data to more than one ADMA use the Ethernet broadcast function by setting the last character of the destination IP to 255.

Applikationsingenieur | bei GeneSys seit 2014

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