GPS statements...is any of these satements true?

Question

a) GPS receivers use triangulation,
b) GPS satellites use triangulation.

Do GPS satellite track the movement of vehicles only?

Answer 1

A is true
B is false

Do is false.

GPS satellites are satellites in a specific orbit where their position is know to the exact meter. A central control center controls the satellites and tells them to make minor adjustments to maintain their exact orbit. The satellites themselves do not do any calculations or determine where they are.

A GPS receiver uses 3 or more GPS satellite signals to determine its position. By measuring the distance it takes for each signal to get from a known location (the satellite) it is possible to figure out your position. This mathematical process is called triangulation. GPS receivers can use only 2 satellites to make a triangulation, but they are set to look for a minimum of 3 satellites to double check their results.

Anything can have a GPS receiver, and the receivers do the tracking not the satellite. Cell Phones routinely have GPS receivers inside, which means they can be located anywhere in the world, even if they can't receive a cell phone signal.

A GPS receiver and can be just a beacon that determines where it is and broadcasts it; this is how the Low Jack system works. This is also how companies, schools, and governments track their vehicles. The commuter bus near you is probably being tracked by GPS and if it goes off schedule the control room will know that in minutes.

A GPS receiver can be small since it only has to receive a signal. The math for calculation triangulation is simple trigonometry and can be easily done by a single computer chip. It is possible to put a GPS tag on anything or in anyone.

I am surprised that Keds or Nike hasn’t marketed a tennis shoe with a GPS tracking chip inside of it. The chip could be powered by movement and the parent who knows the code for that shoe can track it anywhere on the planet. It is even possible to implant a GPS chip inside of a person and track them.

Some companies use smart badges that let people into some areas and not others. They can use a system exactly like the GPS system to track the position of their employees anywhere inside of their building. It would be possible for a boss to know when, and how many times a person goes to the bathroom, and how long they spend there. This is a major invasion of privacy, but it is possible. Implanting GPS tracking systems inside of people would be a similar major invasion of a person’s privacy, but it can be done.

Imagine a world where every criminal, even those guilty of petty theft, are injected with a coded GPS tracking chip. With a computer code broadcast by a satellite that person could be found anywhere in the world to a location within 10 meters. Sounds like a great way to track criminals, but it is a horrible method to run a society where a good portion of its members could be spied on and never even know it. This is just one of the applications that can be made with GPS technology.

If you don’t know how the GPS receiver works the method is simple. The radio signal to it travels at the speed of light, and from orbit that is a measurable interval. The closer you are to a specific satellite the shorter the time to receive the signal. If the satellite’s position is known exactly, and the radio signal is moving at exactly the speed of light, then the only variable is the distance traveled. Once you figure out that you take a reading off of 3 satellites to get your exact position in 3 dimensions. Most systems use a MINIMUM of 3 signals to determine the distance. This method is called trianglation because the distance between two satellites and you is a triangle.

Answer 2

Satellites don't track anything. Receivers pull the information from the satellites to figure out where they are. That's like asking if the satellite tracks the location of your TV when you watch DirectTV (aka satellite TV).

GPS is used in any number of devices, ranging from cell phones, hand held GPS devices (like the Magellan), and cars.

Answer 3

Portable GPS, GSM & CDMA Jammer

It can block GPS, GSM900, GSM1800 and CDMA800 in the mean time.
Featuring prevent tracking devices get GPS locations from satellites and block the communication between base station

Answer 4

a) yes, you don't just receive a signal from one satellite, GPS use three satellites to let you know where you are, and where you want to go.
b) gps satellites track each other, this is how they know where they are located.
GPS satellites only track cars equipped with on star, they are also used to guide aircraft, plus put bombs and rockets on target.
A GPS pick up the signals from the satellites in three different locations, this is how they work to let you know where you are, or where a rocket it to hit it's target.

Answer 5

GPS Satellites don't track anything. It is the Gps receiver that does the tracking. "a" is true.

Answer 6

a =true
b=false
do = false