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re: Recs on accurate (5M) GPS devices
Posted on 2/19/21 at 3:47 pm to Boudreaux35
Posted on 2/19/21 at 3:47 pm to Boudreaux35
quote:
Sounds like get within 5 meters of a location with short signal acquisition times
There are tons of different applications a GPS can be used for. From surveying to finding a deer stand in the dark, accuracy and features required differ. The application will determine what type of unit he should get.
1
Posted on 2/20/21 at 9:21 am to tenfoe
So after getting off my butt and googling, it looks like you need a WAAS-enabled device to get within 5 meters/quick acquisiton.
Wide Area Augmentation System
How it Works
WAAS consists of multiple ground reference stations positioned across the U.S. that monitor GPS satellite data. Two master stations, located on either coast, collect data from the reference stations and create a GPS correction message. This correction accounts for GPS satellite orbit and clock drift plus signal delays caused by the atmosphere and ionosphere. The corrected differential message is then broadcast through 1 of 2 geostationary satellites, or satellites with a fixed position over the equator. The information is compatible with the basic GPS signal structure, which means any WAAS-enabled GPS receiver can read the signal.
A WAAS-capable receiver can give you a position accuracy of better than 3 m, 95 percent of the time.
LINK
Wide Area Augmentation System
How it Works
WAAS consists of multiple ground reference stations positioned across the U.S. that monitor GPS satellite data. Two master stations, located on either coast, collect data from the reference stations and create a GPS correction message. This correction accounts for GPS satellite orbit and clock drift plus signal delays caused by the atmosphere and ionosphere. The corrected differential message is then broadcast through 1 of 2 geostationary satellites, or satellites with a fixed position over the equator. The information is compatible with the basic GPS signal structure, which means any WAAS-enabled GPS receiver can read the signal.
A WAAS-capable receiver can give you a position accuracy of better than 3 m, 95 percent of the time.
LINK
This post was edited on 2/20/21 at 9:30 am
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