Qinertia offers multiple modes to post-process an acquisition. Depending on the mode selected the minimum time between an acquisition and the moment Qinertia can be used to process the data will vary.

Additionally, on top of the processing mode, other factors may influence the timing of effective PPK:

  • Mission type, schedule, duration…
  • Equipment specifications (receiver capabilities and configuration)
  • Environmental conditions (satellite visibility, atmospheric conditions…)
  • Base station status (availability of data, observation quality, baseline…)

The table below details the general guides to be able to perform post-processing in Qinertia after an acquisition. And the time frame to achieve optimal accuracy.

Processing mode

The minimum time frame after mission to conduct PPK

The minimum time frame after mission to get an optimal accuracy

PPK with RTCM configured during the acquisition

Immediately (SBG products with Septentrio GNSS receivers)

1 hour (SBG products with u-blox GNSS receivers)

1 hour

PPK with single base station (short baseline)

1 hour

1 hour

PPK with single base station + IonoShield

1 hour

24 hours

PPK with VBS

3 hours

24 hours

PPP / PPP control of the base station

24 hours

24 hours

Availability of public base station data

The availability of data from the public base stations is heavily contingent upon the upload schedule (the timing and frequency) implemented by the providers. The data of base station is only accessible and actionable once it has been uploaded to the provider's central servers or network management systems.