Satellites broadcast a sphere, not a circle. And that sphere doesn’t land on the earth as a perfect circle for relatively obvious reason… since the ground isn’t perfect flat, nor is the earth perfectly spheroid.
A watch… or other simple gps device doesn’t know what the elevation is.
Only one of the 2 selected points in a 3 satellite setup will be valid. And your device would have no idea which one is valid without elevation knowledge or a 4th satellite. Some devices can figure it out with just 3 satellites. Many/most won’t. But ultimately it’s the same thing. You need 4 pieces of input. Either 3 satellites AND elevation. Or 4 satellites.
So no. I’ve not made a point “for” you. You’re just ignorant or specifically being obtuse on something you clearly don’t understand.
You are not getting a 3 dimensional location. That’s why GPS coordinates only exist on 2 planes. You don’t know what you’re talking about.
Final Verdict
You’re not just wrong, you’re wrong AND you’re a dick about it.
Coordinates on a sphere is a 3 dimensional location. The earth isn’t flat.
Edit: Please education yourself before you’re so confident in your own bullshit answer. https://gisgeography.com/trilateration-triangulation-gps/ and https://www.gps.gov/multimedia/tutorials/trilateration/
Satellites broadcast a sphere, not a circle. And that sphere doesn’t land on the earth as a perfect circle for relatively obvious reason… since the ground isn’t perfect flat, nor is the earth perfectly spheroid.
So which coordinate accounts for elevation? Latitude or Longitude?
Lat/Long is only valid if elevation is valid. You can’t reference a lat/long that is miles into space… or beneath the crust of the earth.
It’s like you’re making my point for me.
A watch… or other simple gps device doesn’t know what the elevation is.
Only one of the 2 selected points in a 3 satellite setup will be valid. And your device would have no idea which one is valid without elevation knowledge or a 4th satellite. Some devices can figure it out with just 3 satellites. Many/most won’t. But ultimately it’s the same thing. You need 4 pieces of input. Either 3 satellites AND elevation. Or 4 satellites.
So no. I’ve not made a point “for” you. You’re just ignorant or specifically being obtuse on something you clearly don’t understand.
My point, exactly
Which is why they’d need 4 satellites. Read the whole post. Read the given sources. Stop being stupid.
I did read the whole post. Stop being an asshole.