Forum Discussion
Localized Positional Tracking, in Similar fashion to GPS.
Would this be at all possible for the OR? Is it even affordable to use a local low latency GPS system to enable positional tracking? Does it even exist?
"Differential GPS" might be able to do what we are talking about here. dGPS is when you have one receiver in a fixed location and the other is mobile. The receiver in the fixed location will always appear to drift, mostly due to atmospheric disturbances, so since you actually know its real location you can always subtract that difference from the location that the mobile receiver reports. This way you can get a reliable accuracy of 1m from GPS. Systems which also use the Russian Glonass, the Chinese version, and the European version of GPS are reported to provide accuracy down to 10cm.
These systems currently start at ~10 000 eurodollars. If you can code a little and your update rate doesn't need to be quicker than about 1s or so you can get in the ballpark with a USB dongle. It can definitely be done at consumer price ranges.
IIRC something about GPS meant that there was a limited update frequency that was barely usable for tracking the motion of a single person. It doesn't look like one can rely on GPS alone for AR & VR translation.
Appears functional... But I wonder if this guy knows that a fluctuating magnetic field creates a radio wave as it transitions to the far field of that frequency... Probably not. Near field and far field magnetic/electric stuff is pretty esoteric and doesn't get covered in hardly any engineering literature. This is possibly because you are not supposed to rely on such a liminal condition even though it is perfectly linear, as energy evens out between the magnetic and electric components of EM as a function of frequency...
They didn't tell you how photons work either. You're apparently supposed to figure that out from the sine & cosine of AC current and somehow magically intuit the perpendicular geometry of the magnetic and electric field. It's not long ago that Wikipedia added this info. It's like it was just forgotten from public consciousness and later recalled.
...Did you know that a single photon can be as big as a city, and even bigger? Ask a professor about this and I guarantee you he will absolutely vomit circular reasoning and academic vitriol on you in order not to change his perception. At least, that's the response I got when I asked about it over a decade ago.
These systems currently start at ~10 000 eurodollars. If you can code a little and your update rate doesn't need to be quicker than about 1s or so you can get in the ballpark with a USB dongle. It can definitely be done at consumer price ranges.
IIRC something about GPS meant that there was a limited update frequency that was barely usable for tracking the motion of a single person. It doesn't look like one can rely on GPS alone for AR & VR translation.
"geekmaster" wrote:
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Appears functional... But I wonder if this guy knows that a fluctuating magnetic field creates a radio wave as it transitions to the far field of that frequency... Probably not. Near field and far field magnetic/electric stuff is pretty esoteric and doesn't get covered in hardly any engineering literature. This is possibly because you are not supposed to rely on such a liminal condition even though it is perfectly linear, as energy evens out between the magnetic and electric components of EM as a function of frequency...
They didn't tell you how photons work either. You're apparently supposed to figure that out from the sine & cosine of AC current and somehow magically intuit the perpendicular geometry of the magnetic and electric field. It's not long ago that Wikipedia added this info. It's like it was just forgotten from public consciousness and later recalled.
...Did you know that a single photon can be as big as a city, and even bigger? Ask a professor about this and I guarantee you he will absolutely vomit circular reasoning and academic vitriol on you in order not to change his perception. At least, that's the response I got when I asked about it over a decade ago.