An exciting update from the Swiftnav team, whose successful Kickstarter project is bringing high-precision (cm-level) RTK GPS to an affordable level (sub $1,000). First up: ArduPilot support!

From today's update:

The complete signal processing chain, from the GPS radio waves that arrive at Piksi's antenna, to the centimeter-accurate relative positions that are the system's output, has now been fully implemented and verified.

Ian says these are the covariance plots of the ambiguity resolution engine, but all I see are some cool circles.Ian says these are the covariance plots of the ambiguity resolution engine, but all I see are some cool circles.

There is still work to be done to port that code to the Piksi hardware. This is a decent chunk of software development, but we're now in the homestretch. Software development timelines are always difficult to estimate, so we want to make sure we avoid pushing the delivery date again by being too optimistic about the schedule. With this in mind, we're promising you a ship-by date of April 15th for the Production RTK Kits.

A sunny San Francisco afternoon, our dual antenna setup taking in the raysA sunny San Francisco afternoon, our dual antenna setup taking in the rays

We've added a new member to our team, one Niels Joubert of Stanford's computer science department. He's an amazing software developer and engineer, and we're very lucky to have him making contributions to the product. Some of you will be pleased to hear that his first project is adding support for Piksi to the Ardupilot system. This support is an utmost priority for us, and now we can finally give it the resources it deserves.

Niels Joubert / Piksi / 3DR PixhawkNiels Joubert / Piksi / 3DR Pixhawk

We've now finished shipping all the SUPPORT and T SHIRT rewards, so if you haven't received yours yet, it should be arriving soon.

Thank you for your continued support and patience!

Colin and Fergus

Views: 15761

Comment by Jesus A on February 9, 2014 at 2:42am

You are right Marc, sorry for the confusion!

It will be great to see what it can do! 

Comment by David S on February 10, 2014 at 5:38pm

Awesome effort guys!

Is this a plug in component on the APM 2.6 copter?

Would it use the telemetry channel for CMR correction signals or would it be able to receive over GSM?

Comment by Jean-Marie PRIGENT on February 12, 2014 at 5:07am

Just incredible to implement this technology in our UAV... 

Cost seems to be high for early adopter but for having such an accuracy: centimeter !!! Wahooo

Future is already there ?

Comment by Gary Hunkin on February 12, 2014 at 10:34am

Can I ask whos carrier phase ambiguity resolution algorithm is used?I  know these patents are defended to death.....

Comment by Adam Erickson on February 12, 2014 at 11:43pm

I've heard there's a lot of concern about EMI from UAV componentry impacting the accuracy of the RTK GPS system. Any word on this? I've been following this work for a long time, but have yet to hear any UAV application accuracy results.

It's good to see that the ambiguity resolution engine appears to be performing well in the covariance plots. What I see is a lack of variable correlation (the two variables fluctuate randomly) with normally distributed (aka Gaussian) noise. I assume this is for the covariance of lat and long positions calculated by the fast ambiguity resolution algorithm. You would expect the two to have random noise when the GPS unit is not moving for a lot of reasons. More information about this sort of thing can be found here: http://ocw.mit.edu/courses/earth-atmospheric-and-planetary-sciences... and fast ambiguity resolution algorithms here: http://www.navcomtech.com/navcom_en_US/docs/download_center/white_p...

Comment by Adam Kroll on February 13, 2014 at 9:31pm

I'm thinking this will be great for net landings, like possible with the piccolo autopilot.

Comment by Kristoffer de Jesus on April 19, 2014 at 5:25am

It is already April 19. You said above that "we're promising you a ship-by date of April 15th for the Production RTK Kits." Now, where can we buy this?

Comment by Marc Cretten on April 10, 2015 at 2:31pm

Any more news on this? What are the Sensefly guys using and how do they jam a flight system into a tiny Ebee?


3D Robotics
Comment by Chris Anderson on April 10, 2015 at 2:59pm

The RTK units are shipping now.

Comment by Adam Erickson on April 10, 2015 at 4:10pm

Marc: senseFly never really had to jam anything into an eBee to support RTK ;)

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