Propeller Corrections Network (PCN) - Coverage and Processing

What Is the Propeller Corrections Network (PCN)?

The Propeller Corrections Network (PCN) is a global network of GNSS base stations used to improve AeroPoint survey accuracy. It works by applying correction data from nearby stations to your survey, eliminating the need to manually source and upload RINEX files.

Learn more about how correction data supports survey accuracy and mapping workflows.

The Propeller Corrections Network (PCN) integrates base stations worldwide. It simplifies the process of sourcing and uploading a RINEX file to correct your AeroPoint survey with satellite observations from a nearby base station.

PCN Coverage and Base Station Requirements

PCN coverage depends on proximity to a nearby base station within the network. For accurate results, your survey site must typically be within 25 miles (40 km) of an available station.

You can verify coverage using the PCN coverage map before processing your AeroPoint data. If your site is outside this range, correction accuracy may decrease due to atmospheric variation between the base station and the survey location.

When processing data using the PCN, Propeller looks for a base station close to your AeroPoint survey and downloads an appropriate RINEX file covering the survey duration. It automatically applies corrections using that RINEX file and the base station coordinate reference system, taking the hard work out of correcting your AeroPoints data.

Because the Propeller Corrections Network needs a base station close to your survey, you can only use this method reliably if your survey is within approximately 25 mi (40 km) of a station in the network. Outside this radius, variations in the atmosphere between the base station and the AeroPoint survey cause the corrections to become unreliable, and the accuracy of your survey may be reduced.

This corrections method requires approximately 24 hours while the Propeller Corrections Network polls the base station for data.

Accuracy

The Propeller Corrections Network in the US produces coordinates in NAD83(2011). The PCN will be unavailable if a site is set up in a Coordinate Reference System based on a different datum.

Processing times expectations

While the Propeller Corrections Network is the easiest option, it is sometimes not the fastest. It often takes just a few minutes to complete. However, depending on corrections data release schedules and potential outages of base stations, it can take up to 24 hours.

If it's been longer than 24 hours and your AeroPoints are still being processed, our team of specialists will be notified and will start investigating the specific survey. 

Frequently Asked Questions

What is PCN coverage?

PCN coverage refers to the availability of nearby base stations used to apply correction data to AeroPoint surveys. Coverage determines whether accurate corrections can be applied.

How close do I need to be to a base station?

Your survey should be within approximately 25 miles (40 km) of a base station for reliable corrections.

What is a RINEX file?

A RINEX file contains GNSS observation data used to correct survey positions using base station information.

Why is my PCN processing taking longer?

Processing time depends on base station data availability and release schedules. In some cases, it may take up to 24 hours.

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