It seems a lot of P2V flyers are watching this, which is too bad because it's wrong:
[youtube]https://www.youtube.com/watch?v=_ge3GuhEDRM[/youtube]
[youtube]https://www.youtube.com/watch?v=_ge3GuhEDRM[/youtube]
ianwood said:To start with, they don't seem to understand how GPS works.
11,000+ views and this couldn't be any more wrong. Your home location is recorded with 7 or more satellites acquired. With 7 satellites, your PDOP will be below 4 and at most a 5-10 meter positioning error on a bad day. More typical is around 2-3m. And what makes this video even worse, is that a GPS error tends to stay consistent over short periods of time due to the gradual change of atmospheric conditions. GPS jumps do happen but typically only when in areas where significant portions of the sky are obscured or when sudden geomagnetic impulses (K index >5) are experienced. Sometimes, it's a satellite low on the horizon but the jumps are small unless you have less than 7 SVs locked in.
You'll find that the majority of fly aways are actually mechanical failures or related to a bad compass calibration, taking off on or near magnetic materials, moving the Phantom during IMU initialization, creating or being exposed to strong RF interference.
Monte55 said:If you want to confirm your home location...fly out a hundred feet, select Homelock with S2 switch...pull back on right stick. It should come back to you. When it gets within about 30 feet it will twitch as it changes to Course lock. What is so hard understanding that?
crash1sttime said:incidentally does anyone have a phone that shows their exact location to within a foot when using it?