GPS
What do a greater number of channels in a GPS handheld unit signify?
From RICH's answer, I can gather than the degree of precision is enhanced by having a greater number of channels. But in theory, only 3 GPS satellites and a maximum of 4 can be overhead at a point at a specific time. If that's the case, having to spend around a $$$ more on a unit with 24 channels seems pointless :S
Public Comments
- More expensive?
- I have a GPS with only one channel and it seems to work everywhere. What could possibly be the benefit?
- The greater amount of satellites that the GPS unit can see or have the ability to see, the more accurate the reading.! Calculating with 5 satellites gives a far better reading than 2 or 3 satellite reception. This affects speed, altitude, and accuracy of location, ETA, etc. A quality GPS with several good readings from several satellites can be accurate down to 30 feet or so..
