Tracking Device Miami Coral Gables

How GPS works  Tracking Device Miami Coral Gables

GPS satellites circle the Earth twice a day in a precise orbit. Each satellite transmits a unique signal and orbital parameters that allow GPS devices to decode and compute the precise location of the satellite.  Tracking Device Miami Coral Gables  GPS receivers use this information and tri lateration to calculate a user’s exact location.  Tracking Device Miami Coral Gables  Essentially, the GPS receiver measures the distance to each satellite by the amount of time it takes to receive a transmitted signal. With distance measurements from a few more satellites, the receiver can determine a user’s position and display it electronically to measure your running routemap a golf coursefind a way home or adventure anywhere.  Tracking Device Miami Coral Gables

Tracking Device Miami Coral Gables  The 31 satellites that currently make up the GPS space segment are orbiting the earth about 12,000 miles above us.  Tracking Device Miami Coral Gables  These satellites are constantly moving, making two complete orbits in less than 24 hours.  Tracking Device Miami Coral Gables  They travel at speeds of roughly 7,000 miles an hour. Small rocket boosters keep each satellite  Tracking Device Miami Coral Gables  flying on the correct path.  Tracking Device Miami Coral Gables

How GPS works  Tracking Device Miami Coral Gables

How GPS works  Tracking Device Miami Coral Gables

 Tracking Device Miami Coral Gables

 Tracking Device Miami Coral Gables  To calculate your 2-D position (latitude and longitude) and track movement, a GPS receiver must be locked on to the signal of at least 3 satellites.  Tracking Device Miami Coral Gables  With 4 or more satellites in view, the receiver can determine your 3-D position (latitude, longitude and altitude).  Tracking Device Miami Coral Gables  Generally, a GPS receiver will track 8 or more satellites, but that depends on the time of day and where you are on the earth. Some devices can do all of that from your wrist.  Tracking Device Miami Coral Gables

 Tracking Device Miami Coral Gables  Once your position has been determined, the GPS unit can calculate other information, such as:  Tracking Device Miami Coral Gables

 

  • Coral Gables
  • And more Tracking Device Miami Coral Gables

 Tracking Device Miami Coral Gables

 Tracking Device Miami Coral Gables

How accurate is GPS?  Tracking Device Miami Coral Gables

 Tracking Device Miami Coral Gables  Today’s GPS receivers are extremely accurate, thanks to their parallel multi-channel design. Our receivers are quick to lock onto satellites when first turned on. They maintain a tracking lock in dense tree-cover or in urban settings with tall buildings.  Tracking Device Miami Coral Gables  Certain atmospheric factors and other error sources can affect the accuracy of GPS receivers. Garmin GPS receivers are typically accurate to within 10 meters.  Tracking Device Miami Coral Gables  Accuracy is even better on the water.  Tracking Device Miami Coral Gables

How GPS works  Tracking Device Miami Coral Gables

How GPS works  Tracking Device Miami Coral Gables

Some Garmin GPS receiver accuracy is improved with WAAS (Wide Area Augmentation System).  Tracking Device Miami Coral Gables  This capability can improve accuracy to better than 3 meters, by providing corrections to the atmosphere. No additional equipment or fees are required to take advantage of WAAS satellites. Users can also get better accuracy with Differential GPS (DGPS), which corrects GPS distances to within an average of 1 to 3 meters. The U.S. Coast Guard operates the most common DGPS correction service, consisting of a network of towers that receive GPS signals and transmit a corrected signal by beacon transmitters. In order to get the corrected signal, users must have a differential beacon receiver and beacon antenna in addition to their GPS.  Tracking Device Miami Coral Gables

Other GPS Systems  Tracking Device Miami Coral Gables

 Tracking Device Miami Coral Gables  There are other similar systems to GPS in the world, which are all classified as the Global Navigation Satellite System (GNSS). GLONASS is a satellite constellation system built by Russia.  Tracking Device Miami Coral Gables  The European Space Agency is creating Galileo, while China is creating BeiDou. Most Garmin receivers track both GLONASS and GPS, and some even track BeiDou.  Tracking Device Miami Coral Gables  You can expect a more reliable solution when you track more satellites.  Tracking Device Miami Coral Gables  You could be tracking nearly 20 with newer Garmin products.  Tracking Device Miami Coral Gables

How GPS works  Tracking Device Miami Coral Gables

How GPS works  Tracking Device Miami Coral Gables

The GPS Satellite System  Tracking Device Miami Coral Gables

 Tracking Device Miami Coral Gables  The 31 satellites that currently make up the GPS space segment are orbiting the earth about 12,000 miles above us.  Tracking Device Miami Coral Gables  These satellites are constantly moving, making two complete orbits in less than 24 hours.  Tracking Device Miami Coral Gables  They travel at speeds of roughly 7,000 miles an hour. Small rocket boosters keep each satellite  Tracking Device Miami Coral Gables  flying on the correct path.  Tracking Device Miami Coral Gables

Here are some other interesting facts about the GPS satellites:  Tracking Device Miami Coral Gables

  • The official USDOD name for GPS is NAVSTAR Tracking Device Miami Coral Gables
  • The first GPS satellite was launched in 1978. Tracking Device Miami Coral Gables
  • A full constellation of 24 satellites was achieved in 1994. Tracking Device Miami Coral Gables
  • Each satellite is built to last about 10 years. Replacements are constantly being built and launched into orbit. Tracking Device Miami Coral Gables
  • A GPS satellite weighs approximately 2,000 pounds and is about 17 feet across with the solar panels extended. Tracking Device Miami Coral Gables
  • GPS satellites are powered by solar energy, but they have backup batteries onboard, in case of a solar eclipse. Tracking Device Miami Coral Gables
  • Transmitter power is only 50 Watts or less. Tracking Device Miami Coral Gables

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