This guide will walk you through the PointPerfect subscription and INS configuration, you can also find some frequently asked questions in our FAQ.
What is PointPerfect?
PointPerfect™ is a PPP-RTK GNSS correction service provided by u-blox. It combines the high accuracy of RTK with the flexibility of PPP, addressing the limitations of each technology.
While RTK offers high accuracy without convergence time, it requires a nearby base station. On the other hand, PPP eliminates the need for a base station but typically has a longer convergence time. PointPerfect optimizes both, providing precise positioning with no need for a local reference station and a much faster convergence time (few seconds) compared to traditional PPP.
Is my SBG Systems INS compatible with PointPerfect?
The following devices are compatible with PointPerfect:
- Ellipse-N v3
- Ellipse-D v3
- Ellipse-N OEM v3
- Ellipse-D OEM v3
The Ellipse must have a firmware version 3.x at least to be compatible with PointPerfect .
How to subscribe to PointPerfect?
Subscriptions are managed directly through the u-blox platform. You should use the following link to subscribe: PointPerfect | u-blox.
When first creating your PointPerfect account, you can add a stream by adding a "PointPerfect Thing" in Location Services after choosing a subscription:
You can then choose the format for your stream, in this example we are using the RTCM format:
You will find your username and password when checking your "Thing Details":
Receiving the NTRIP corrections with the Ellipse
Once you have your login and password information for PointPerfect, you can follow the Configure RTK article to connect to the PointPerfect NTRIP server with the sbgDataLogger for example and forward the corrections to the Ellipse.
In the Ellipse, you will have to configure the RTCM input to the port used (Port E in the example below):
You will then need to configure the baud rate for port E that matches the baud rate used in the sbgDataLogger to forward the corrections.
Verification
It is possible to check that the signal is well received thanks to the solution status displayed in the sbgCenter GNSS window, it should display a RTK solution:
