Evaluation of Low-Cost RTK GPS Receivers€¦ · Title: Evaluation of Low-Cost RTK GPS Receivers -...

Evaluation of Low-Cost RTK GPS ReceiversPart of the iTRANSIT project.

Thomas Petig

May 16, 2016

Copyright 2016 Thomas Petig 1 / 13

Introduction to RTK GNSS

I Testing of vehicles requires reliable and accurate positioninformation.

I Standard GNSS too inaccurate.I How about augmented GNSS?

I SBAS/EGNOSI DGPSI PPPI RTK


Introduction to RTK GNSS

RTK (real time kinematic):I Analyses carrier phase.I Gives sub-decimeter accuracy, butI requires base station data in real time.


Software RTK GNSS

RTKLIBI Released around 2006.I Only RAW receiver needed.I Full processing in software.I BSD 2 clause license.I Supports Linux/Windows.


RPi2 Navio+MCX-SMA SMA CableSPI

Bat

XT60 Power adapter

Power port

Wifi USB

Local Storage

SD Card


What does low cost mean?

Raspberry Pi 2 500 krGNSS receiver 1500 krGNSS Antenna 900 kr

Misc. 1000 kr

Total 3900 krYou also need a base station.


GNSS receiver

Navio+ receiver and Raspberry Pi:


Accuracy

Navio+ w/ TW2400fixed (green only) all

points 68749 75187σ [m] 0.025 0.482


Conclusion

I Low-cost is possible.I Limitation due to single frequency use

I Longer warm up time.I Hick ups.

I Low update rate (1 - 20 Hz).


Evaluation of Low-Cost RTK GPS Receivers€¦ · Title: Evaluation of Low-Cost RTK GPS Receivers -...

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