2 ms·
Regular GPS claims ~1m accuracy, but in urban areas it's really more like ~10m, and it gets confused about which side of the street a pedestrian is on. If you
by nix0n 3y ago
Regular GPS claims ~1m accuracy, but in urban areas it's really more like ~10m, and it gets confused about which side of the street a pedestrian is on.
If you have a dozen people trying to navigate the same neighborhood of Boston* on foot, they could all be using the same app, all sharing data with each other and all benefiting from that data.
Does phase data require holding the receiver still? Anytime I've seen a survey GPS receiver, the surveyors seem to leave it in the same spot for a few minutes.
*There's some loss of generality here. In a grid layout place like New York this would be unnecessary, but in a less dense place it would be unviable.
- bcrl 3y agoI use hardware that collects RTK corrected GPS coordinates for pole line engineering, and even with RTK you can get some pretty wild errors. One building in a small town with a metal roof and metal siding caused the reported location of the adjacent pole to be more than 10 meters off. I ended up manually correcting the coordinates via the satellite view on the map. I've seen cases where inaccurate positioning of poles by just 60 centimeters is enough to make pole loading analysis fail a pole.