Select to expand quote

Roo said..
Wont be long now until you can buy a snap on accessory that gives your smartphone cm level gps position accuracy. Won't need the GT31, Canmore, GW52, just snap onto your phone, start up GPSLogit and away you go.

Roo

... so you are dead?

Select to expand quote

Roo said..
Wont be long now until you can buy a snap on accessory that gives your smartphone cm level gps position accuracy. Won't need the GT31, Canmore, GW52, just snap onto your phone, start up GPSLogit and away you go.

Roo

I compared the numbers from my phone against the GT31 results & they are a few knots out so I wouldn't rely on the Pixi for speeds just chatter
As long as the verbal speeds are reasonable it should help with tuning & trim etc which is all I was after.

When will you be releasing this accessory Roo?

Select to expand quote

Roo said...
Wont be long now until you can buy a snap on accessory that gives your smartphone cm level gps position accuracy. Won't need the GT31, Canmore, GW52, just snap onto your phone, start up GPSLogit and away you go.

Roo

Roo, is this the technology? www.thestatesman.com/

That's another way of doing it but approaches the problem from a different direction.

Select to expand quote

Roo said...
That's another way of doing it but approaches the problem from a different direction.

You are being pretty close to the vest on this topic, but I'll try one more time. How about this technology? m.phys.org/news/2015-05-centimeter-accurate-gps-virtual-reality-mobile.html or more precisely gpsworld.com/accuracy-in-the-palm-of-your-hand/

Barton I learnt long ago that if you tell someone something it is rare they listen and take the advice. However, if you guide them to seek out the answer themselves they learn a lot more. You sir have learnt a lot more today! Samsung are on board and have invested in the technology for their phones.

Select to expand quote

Roo said...
Barton I learnt long ago that if you tell someone something it is rare they listen and take the advice. However, if you guide them to seek out the answer themselves they learn a lot more. You sir have learnt a lot more today! Samsung are on board and have invested in the technology for their phones.

Roo, lesson well taught. And yes, after reading the articles I have learned a lot (retention of the knowledge is another matter :) ). Glad you included the comment about Samsung as that was my next question. Thank you.

The two approaches are significantly different and don't appear to be mutually exclusive - combining the two technologies might provide a really 'gangbusters solution'.

Thanks to BartonB's link I found this gem. It is confirmation, for those that still need it, that current Smartphone antenna are a limiting factor in GPS accuracy even compared with the Patch antenna in the cheap consumer logger GPS's:

Centimeter Positioning with a Smartphone-Quality GNSS Antenna
By Kenneth M. Pesyna, Jr., Robert W. Heath, Jr. and Todd E. Humphreys, the University of Texas at Austin

The smartphone antenna’s poor multipath suppression and irregular gain pattern result in large time-correlated phase errors that significantly increase the time to integer ambiguity resolution as compared to even a low-quality stand-alone patch antenna.