How do I add non-VERIPOS RTCM stations to the Verify-QC software?

The following information can be found within the Verify-QC manual (section 4.2.1.8).

Selecting Non-Veripos RTCM stations

Verify-QC is capable of using non-VERIPOS corrections providing that they adhere to the RTCM SC104 V2 format and are from stations coordinated in an ITRF reference frame with a sufficiently high accuracy to ensure compatibility with the VERIPOS reference station network.

Note: VERIPOS cannot guarantee the performance of position calculations that include 3rd party non-VERIPOS RTCM stations.

When interfacing a non-VERIPOS RTCM source, the Veripos box is unchecked, to provide a new input dialogue box. It will now be possible to add new stations, or edit ones that already exist.

To do this, click on New, and the following New Station dialogue box for defining non-VERIPOS stations will open:

Here the station Name and RTCM ID can be entered. The reference station ID should be obtained from the provider of the reference station. If the station ID is unknown then it can be read from the RTCM message header in the Verify-QC IO view once the Device IO settings have been entered. Open View/IO then right click and change the input source to RTCM.

The RTCM ID is stamped at the start of the decoded RTCM header information of each message. In this case RTCM messages with ID 0505 and 0506 are being input:

Verify-QC requires the RTCM Type 3 (and the RTCM Type 32 from GLONASS stations) to determine the reference station location or it will reject the station data. If the reference station is known not to provide a Type 3 and/or Type 32 message and at a short range, then the user can tick the ‘Local Station’ box. Verify-QC will then use the correction data from the station and assume it is at the users’ location.

The WGS84-PZ90 datum shift used by the reference station receiver is normally automatically detected from the Type 3 and Type 32 messages. Users of the GLONASS functionality can also select the WGS84-PZ90 datum shift between the GPS and GLONASS reference frames. The following options are available:

• Standard shift (Topcon/Javad default)
• RTCM shift (RTCM v2.3)
• NovAtel shift (NovAtel default)
• Zero Shift

These shifts have the following predefined Helmert parameters:

IO Device

Please refer to the Verify-QC manual for further information on setting up the IO Device (section 4.2.1.9) or by pressing F1 when the dialogue is open in Verify-QC which will take you to the appropriate page in the manual.

The IO Device section supports RTCM inputs via Serial Port, Client Socket and Datagram.