PPK/PPP HELP

Do I need base station data?

Yes and no. If you do have your own base station, that is great. Full constellation data is best, logged at 1 measurement per second. This works well on sites with their own datum, to tie your drone survey directly to the local network. 

Or you can download CORS data. KlauPPK has direct integration to NGS NOAA (in the USA, free), Smartnet (global with a subscription) and AllDayRTK (Australia/NZ with a subscription). KlauPPK will download data from a station you choose, for the time span of your mission. Or you can manually download from any CORS site and treat it as your own base data. 

What if I’m out of range of NTRIP or CORS for PPK?

If you are really stuck, with no base station data available within PPK range, MakeItAccurate will process your data. Cloud based PPP trajectory processing, fully integrated in the KlauPPK desktop. This is a PPP/PPK service that applies precise global clock, orbit, and atmospherics to produce accurate camera centre coordinates from your drone data. See www.makeitaccurate.com for details 

Why am I getting float results (orange dots 25cm accuracy)?

Float solutions will happen due to various reasons:

• your base station data is not at 1 hz, maybe 10 or 15 seconds per epoch
• your base station is too far away. Typically 30 or 40km should be OK, but if there is ionospheric activity at the time it can affect it
• your rover data is poor for some reason, bad antenna connection, that kind of thing. 

Again, MakeItAccurate is a good way to see if the problem is due to your base data. www.makeitaccurate.com 

Why Use KlauPPK? 

Proven Functionality. KlauPPK software has led the industry in
direct georeferencing of UAV mapping data for a decade.
Generate accurate camera center coordinates
to create accurate maps and models
with minimal ground control and less photogrammetry processing.   

KlauPPK Software customized for DJI and US drones. Process the data from your UAV, whether a DJI RTK drone or compatible US-made mapping drone.

Better Results. More reliable and accurate than RTK. No data loss or initialization loss from RTK radio link limitations. All collected data is processed with similar algorithms to RTK, run forwards and backwards through the data. PPK offers greater flexibility in operations, longer range from the base, is more reliable, more accurate and is easier to use.

Cost effective. Not only will you save time and money in the field (compared to traditional methods with GCPs), the accurate camera centre coordinates dramatically reduce photogrammetry processing time.

Integrated CORS base stations and MakeItAccurate PPP. Find your nearest base station data automatically, with direct integration into NGS NOAA (USA, free), AllDayRTK (Aus/NZ) and Smartnet (global) CORS base station data repositories, or access the MakeItAccurate pay per use PPP service for high accuracy in remote areas.

Coordinate System and Geoid Support. KlauPPK software converts the default WGS84 geographic coordinates to any published coordinate system and applies the geoid separation. Users can also perform datum transformations and site localization.

Smart Geotagging. Computed high-accuracy camera positions with their horizontal and vertical accuracy values can be written to the image EXIF data, or to a text file with other survey report information. The accuracy values are applied in photogrammetry processing software, again helping to achieve the best possible results.