Correct data with updates

HD GNSS correction data consists of several different correction components, which receive updates at different rates and have different validity periods.

The following table contains nominal update intervals and validity periods for each correction data type.

• The nominal update interval refers to how often new data is transmitted from the server to subscribed users.
• The validity period indicates how long you can reliably use a single correction message, starting with epochTime as indicated in message content.

Even though the update interval may be shorter than the validity period, and old data may still be valid even when new data is already available, you should start using new data as soon as it is received, as the accuracy of the old data degrades over time.

Update intervals and validity periods of different correctional data types