GPS Receiver

GPS Receiver Makes Being Lost Difficult

Getting lost and staying lost is becoming more difficult everyday as the price of a GPS receiver has fallen drastically over the past decade to enable just about everyone to have one. Hunters, travelers and even construction workers have use for a GPS receiver, search for a bluetooth GPS receiver revivew, however knowing how to interpret the information will determine just how valuable it is to carry.

Two dozen working satellites, plus a few spares, are circling the globe over 12,000 miles up, continually sending signals to the ground. By checking the current time, the distance between the satellite and the GPS receiver as well as altitude, the receiver can offer a location on the ground. By receiving information from four or more satellites the location can be even more exact as the overlapping information will allow the GPS receiver to find a probable location based on information from multiple sources.

While signals from a global position satellite are traveling a long distance to reach the GPS receiver units, there are some barriers to the signals getting through. Parking garages, for example, may block the signals and storm activity may slow the signal down causing locations to be slightly off track.

GPS Receiver Part Of Larger Units

Those hiking through the wilderness, such as hunters, may lose their bearings and having a GPS receiver with them can help them find their way back home. Travelers like the fact that their car system can tell them where they are if they get lost, and if they subscribe to a navigational service, can quickly find the directions to get back on their intended route.

Construction workers count on their high-tech GPS receiver to pinpoint their location by accepting signals from up to 20 different satellites. This gives a much more accurate location and when looking for property boundaries, this can save a lot of time for construction. It can also help in locating underground utility lines and prevent them from being damaged during digging.

Many businesses will have a GPS receiver in their office to help keep track of their vehicles, if equipped with tracking devices, and also keep track of shipments to better determine estimated arrival times. They can also use this equipment should a vehicle become lost or stolen on its route.

For persons traveling a GPS receiver can help if they get lost. By calling local authorities they give them their current location and get directions to where they need to go.

When people talk about a gps system, they are usually talking about the gps receiver. The gps receiver is the part of the whole system that receives the signal that is sent down from the satellites to pinpoint your location and get you to your pre-programmed destination. The receiver is usually mounted on the dashboard of the car or with a suction cup to the windshield. It has a display screen that will show you the route to go and many gps receivers have voice prompts to get you along the way.

The whole Global Positioning System is a conglomeration of 27 satellites circling the Earth at a constant rate. Twenty four of them are used to receive signals sent out by the gps receiver and three are used as back-ups in case one of the other ones malfunctions or becomes unusable. The job of the gps receiver is to locate four or more of these satellites, figure out the distance to each, and use this information to deduce its own location. This operation is based on a simple mathematical principle called trilateration.

Trilateration basically is finding three different points surrounding you and then putting you in the middle of it. There is a bit more to it, but that is the basic principle. When the gps receiver sends out its signal and hones in on four or more of the gps satellites, it then looks around you to find these three points and deduces exactly where you are based on those three points.

There are three kinds of gps receivers. The first kind – as mentioned previously – is the kind that is mounted inside your car. Most of them are easily interchangeable between vehicles because of the suction mount cups that many gps receivers use. Another type of gps receiver is a portable hand held device that you can take with you. These are great for use in sporting activities such as hiking, biking, and fishing. The third type of gps receiver is one that is used for tracking purposes. This type of gps receiver is usually mounted inside the vehicle either on its under carriage or under the seat.

The way a gps receiver works is actually a bit more complicated than outlined above, but you get the general idea, we hope. The signal that is sent out from the gps receiver does so automatically when the unit is powered up and when you program in your intended destination. From there, the rest is gravy!