real time kinematic GPS receiver

rtk-gps
Real time kinematic GPS receivers are the ones used by pros to do land survey jobs which can provide down to 1 centimetre accuracy. Now you don’t have to spend a fortune on one of these since you can build your own thanks to researchers at Tokyo University.

All you need is a cheap beagle board, the instructions here and lots of free time and patience… via

2 Responses to “real time kinematic GPS receiver”

  1. Ricky Tan Says:

    I am a little confused.

    We bought a GPS board which was supposed to provide us with accurate time.

    Because we have daylight saving in Australia (we have to shift the clock forward 1 hr in summer), the GPS does not automatically do that clock adjustment. We have to manually adjust the time forward on the GPS.

    Can someone explain to me how GPS satellite actually tracks the time of the day and if it adjust automatically the time on the receiver ?

    I look forward to your advice.

    Kind regards
    Ricky


  2. Chris Says:

    The REAL story here is Mr. Takasu’s game changing RTKlib software! Although its software, not technically a “gadget” it makes amzing things possible with some quite affordable gadgets.

    You really should do a story on RTKlib, its not an exaggeration to say its just incredible. Check it out, you’ll be glad you did.

    RTKlib makes it possible to get highly accurate positioning with affordable (under $100) GPS equipment. Plus, it exposes the way GPS works - its a huge learning experience with something useful to be gleaned for anybody interested in radio engineering, earth science, math, space science, physics, geology. Really, the list is long. It shows how they all work together.

    Also, what you end up with is HIGH precision real time positional data.

    Measure things like earthquakes, weather variations, continental drift, building oscillation and so on.

    Its also good enough for use in surveying.

    Previously, this required *very* expensive hardware.

    Currently RTKlib supports eight or nine different chipsets and receivers. They all have a mode that bypasses their internal processing.

    Instead of NMEA output, they can be commanded to output raw GPS data,

    Then RTKlib’s software can either save it for postprocessing or do the number crunching in realtime, using a variety of different methods, depending on what’s its being used for.

    For anyone who is into GPS, don’t pass RTKlib up as this tool is unique. Mr. Takasu is an educator as well as a scientist, and RTKlib is am amazing educational tool, as unlike elsewhere, it lets you see the process, so you will also learn in a way like no other, *how GPS works*.


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