At leAst 3
100 and there is life on uranus... go check
A GPS receiver typically needs signals from at least 3 satellites to calculate a 2D position (latitude and longitude) and 4 or more satellites for a 3D position (latitude, longitude, and altitude). The receiver uses the signals from multiple satellites to triangulate its position on Earth.
Your TomTom GPS device may take a while to get a valid signal if it is searching for satellites or if it is in an area with poor satellite reception, such as within buildings or urban canyons. It can also depend on how long it has been since you last used the device, as it may need time to update its almanac data. Try ensuring a clear view of the sky and giving the device some time to acquire a signal.
You would need at least three GPS satellites to pinpoint your location. However, you would need a fourth to also identify your elevation.
No, GPS satellites do not need to be recalibrated for time corrections. The atomic clocks on the satellites are highly accurate and stable, and any necessary adjustments can be made remotely from the control segment on the ground.
Because they only need to transmit to certain parts of the planet. TV relay satellites for example - need to stay in one place to beam the pictures back to earth. If they orbited the earth, the signal would be lost as it crossed the horizon. Another example is the global GPS system. The satellites that provide the information for GPS must remain in one place - otherwise they wouldn't give accurate information to the user.
GPS devices receive signals from several Global Positioning Satellites, which orbit the earth. The device uses the difference in timing from the signals to calculate its own position. I don't remember, but I think you can get a position with signals from 4 satellites, so you would need to have a clear signal from the satellites in order for the device to calculate its position.
100 and there is life on uranus... go check
It depends on how you bias the transistor. If you ground the emitter, which is very common, you will need to offset the input signal so you can amplify the full voltage swing.
Typically, three satellites are needed to determine a 2D position (latitude and longitude), while four satellites are needed to determine a 3D position (latitude, longitude, and altitude) using GPS technology.
Hawking HWREN1 Hi-Gain Wifi extender works just like it says- doubles the existing connection signal… My large house has full bar signal everywhere, no complaints from me.
The aliens need to use earth's satellites so that they can coordinate their invasion efforts.
A GPS receiver typically needs signals from at least 3 satellites to calculate a 2D position (latitude and longitude) and 4 or more satellites for a 3D position (latitude, longitude, and altitude). The receiver uses the signals from multiple satellites to triangulate its position on Earth.
500 feet
A single satellite can only give you relative location. 3 satellites can give a 2-D positioning/location that includes longitude and latitude. 4 satellites can give a 3-D positioning/location that includes longitude, latitude and altitude. Only 4 satellites can give you absolute location.
so we can keep our satellites running
Your TomTom GPS device may take a while to get a valid signal if it is searching for satellites or if it is in an area with poor satellite reception, such as within buildings or urban canyons. It can also depend on how long it has been since you last used the device, as it may need time to update its almanac data. Try ensuring a clear view of the sky and giving the device some time to acquire a signal.