[FOSS-GPS] Make Your Own Real Time Kinematic GPS Receiver That's Accurate to One Centimeter [GPS]

Risto H. Kurppa risto at kurppa.fi
Tue Nov 17 18:13:48 EST 2009


Researchers Tomoji Takasu and Akio Yasuda of Tokyo University have
developed an open source, inexpensive, Real Time Kinematic (RTK) GPS
receiver than runs on a beagle board. They've also left instructions
on how you can build one yourself.

Unlike traditional GPS, RTK-GPS doesn't measure the delay between its
signal and the the signal received by a satellite—instead it measures
the shorter wavelengths in the satellite's carrier signal. This can
mean accuracies within one centimeter, but there are difficulties with
aligning signals with RTK, and the need for multiple receivers makes
the technology impractical for navigation. This is why the technology
is most widely used in land surveying. If you would like to tinker
around with one yourself, full instructions are available on the
project page. [Project Page via Make]

wow :)


| risto h. kurppa
| risto at kurppa dot fi
| http://risto.kurppa.fi

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