No it uses the same signal as is broadcast from the GPS satellite. They use ground based transmitters, whose position is very accurately plotted, to add additional accuracy to the satellite data.
WAAS consists of approximately 25 ground reference stations positioned across the United States 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 slight variations in GPS satellite orbit and clock drift plus signal delays caused by the atmosphere and ionosphere. The corrected message is then broadcast through one of two 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.
WAAS is not a Garmin system. It’s neither VHS nor microwave. It’s an FAA satellite-based system that improves GPS accuracy by using addditional satellites (Galaxy 15 and Anik F1R) to fine tune the basic GPS info.
Sul is absolutely correct. Good job!
Next question please.
No it uses the same signal as is broadcast from the GPS satellite. They use ground based transmitters, whose position is very accurately plotted, to add additional accuracy to the satellite data.
WAAS consists of approximately 25 ground reference stations positioned across the United States 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 slight variations in GPS satellite orbit and clock drift plus signal delays caused by the atmosphere and ionosphere. The corrected message is then broadcast through one of two 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.
WAAS is not a Garmin system. It’s neither VHS nor microwave. It’s an FAA satellite-based system that improves GPS accuracy by using addditional satellites (Galaxy 15 and Anik F1R) to fine tune the basic GPS info.