The Global Positioning System (GPS) is a satellite-based navigation system made up of a network of 24 satellites placed into orbit by the US. Department of Defense. GPS was basically meant for military applications, but in the 1980s, the government made the unit accessible for civilian use. GPS works in any weather conditions, anywhere in the world, 24 hours a day. There are no subscription fees or setup charges to utilize GPS.

During the last ten years Nissan came out with a seven passenger SUV, the Nissan Pathfinder inside the medium size vehicle category. The Nissan Pathfinder includes 3 rows of seats and is actually a modified model of the bigger Nissan Armada.

How it works

GPS satellites circle the earth two times a day in a very precise orbit and transmit signal information to earth. GPS receivers take this info and utilize triangulation to calculate the user's exact location. Essentially, the GPS receiver compares the time a signal was transmitted by a satellite with the time it was received. The time variation tells the GPS receiver how far away the satellite is. Now, with distance measurements from a couple of more satellites, the receiver can determine the user's position and display it on the unit's electronic map.

In the United States we're very dependent upon our cars. Only the major metropolitan areas have reliable, handy mass transit systems. Along with the dependency, some folks also seem to have love affairs with their autos.

GPS navigation Displays

A GPS receiver has to be locked on to the signal of at least three satellites to calculate a 2D position (latitude and longitude) and track movement. With four or more satellites in view, the recipient can figure out the user's 3D position (latitude, longitude and altitude). Once the user's position has been figured out, the GPS system can calculate other information, for example speed, bearing, track, trip distance, distance to destination, sunrise and sunset time and much more.

How accurate is GPS?

Today's GPS receivers are extremely accurate, thanks to their parallel multi-channel style. Certain atmospheric aspects and other sources of error can affect the accuracy of GPS receivers. GPS receivers are accurate to within 15 meters on average.

Many people experience difficulties in establishment of confidence in car auction sites. Sites like: Car auction inc, and many others are offering a wide selection of cars for 90% off usual price and such.

GPS Signals

GPS recipients with WAAS (Wide Area Augmentation System) capability can improve accuracy to around three meters on average. No additional equipment or fees are needed to take advantage of WAAS. Users may also get better accuracy with Differential GPS (DGPS), which corrects GPS signals to within an average of three to five meters. The U.S. Coast Guard operates the most common DGPS correction service. This system includes a network of towers that receive GPS signals and transmit a corrected signal by beacon transmitters. To get the corrected signal, users must have a differential beacon receiver and beacon antenna along with their GPS.

One of the best things about riding inside your vehicle is being able to blast the radio to your preferred kind of music. For a lot of folks it may be fun and even relaxing.

Satellite Diagram

The GPS satellite unit

The 24 satellites that make up the GPS space segment are orbiting the earth about 12,000 miles above us. They are constantly moving, making two full orbits in less than 24 hours. These satellites are travelling at speeds of about 7,000 miles an hour.

GPS satellites / GPS navigatsia are powered by solar energy. They have backup batteries onboard to keep them running during a solar eclipse, when there's no solar power. Tiny rocket boosters on each satellite keep them flying in the correct path.

These days, when you are driving on the road it's difficult not to take notice of the crossover vehicles. Similar to the time when minivans had been launched during the 80's, the crossovers are becoming extremely popular. These even compete with station wagons and minivans these days as the selected car for families.

Here are some other interesting details about the GPS satellites (also called NAVSTAR, the official U.S. Department of Defense name for GPS):

The initial GPS satellite was launched in 1978.

A full constellation of 24 satellites was achieved in 1994.

Each satellite is built to last around 10 years. Replacements are constantly being built and released into orbit.

A GPS satellite weighs approximately 2,000 pounds and is about 17 feet across with the solar panels extended.

Transmitter power is only 50 watts or less.

Bi-xenon Bulbs, Are Bulbs That Can Function As Both High Beam And Low Beam
Why would you Change to Xenon Lights HID? Digital ballasts are the subsequent step in HID lights, they are more efficient, cooler, as well as put less wear and tear on the bulb. Digital ballasts don't have the usual transformers, capacitors or even igniters, instead they have electronic circuit, which means that they are more efficient.

Tips For Successfully Executing Auto Repair At Home-The Perfect Recommendations Are Written Here
Car repairs are a real pain. You either have to devote an arm and a leg on a mechanic, or take some time out of your busy schedule to perform the repairs on your own.

You Should Not Cope With Auto Repair Until Reading This Article
If you're reading this, you are most likely have vehicle issues. Thankfully, this article's purpose is to help you do this. The majority of people know squat about car repairs, so they need to be told exactly what measures to take.

It Is Not Always Important To Spend A Lot Of Cash To Get Your Car Fixed
If your car suffers a breakdown, you need to get it running ASAP. Getting a vehicle get trapped with you that doesn't work can make complications occur. It is not always necessary to spend a lot of money to get your car repaired.

Auto Repair Work Recommendation To Keep Your Car In Best Shape-Adhere To All These Best Suggestions
Your car does a lot for you each day. You might not understand enough about cars to feel comfortable servicing compact repairs. If this is true, then you have found an excellent post on how you can do some simple car maintenance.

Sound Suggestion To Use When Vehicle Shopping
Car shopping should be a fun experience. Driving around a shiny new car is a lot of fun, and buying it should be, too. People often associate negative emotions with vehicle purchases, but this is not necessary.

What You May Need To Understand Concerning Vehicle Repairs
Do you have a vehicle? If you do, you have probably needed repairs at some time. It can be very challenging to find a service to help you out and it will make you begin to feel crazy.