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Artificial Satellites
Artificial Satellites are objects launched from earth to orbit earth or other planets. Satellites are used for communication, remote sensing, weather forecasting, and other purposes. This category is for questions about satellites in general or specific satellites.
1,932 Questions
Do GPS satellites need to be recalibrated for time corrections?
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.
What is the reason for Spectral Inversion in C Band Satellite Communications?
It's just another method to help prevent signal theft.
Which layer of the atmosphere do communications satellites orbit?
Most communications satellites operate outside of the earth's atmosphere. The GPS satellites are about 23,000 miles from the surface of the earth.
What was the first image taken by a satellite?
Many photographic images were taken from the edge of space as both the USSR and US launched captured German V-2 rockets after World War 2. One of the first, showing the curve of the Earth, was taken on October 24, 1946.
The first photo taken by an orbital satellite was by Explorer VI in 1959, showing a section of the Pacific Ocean. It was a black-and-white image with very poor detail, but subsequent images (many of them classified) had considerably better enhancement.
How do you stop a satellite signal in a temple?
Microwave Radio Frequencies (RF) does not travel through dense metals. A metal roof would block the signal. If you try to get your position on a GPS inside the temple and cannot, then the satellite signals are blocked.
the nasa satellite has fallen it is 11:51 pm and it is safe to go outside
What are facts about the Explorer 1 satellite?
- launched in Cape Canaveral (now called Cape Kennedy),Fl.
- launched at 10:48 p.m. on January 31, 1958
- nickname- Satellite 1958 Alpha
- designed by Dr. James Van Allen of the University of Iowa
- first U.S satellite
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A satellite in a low earth orbit moving faster than a satellite in a geosynchronous orbit?
YES
As height increases, speed of satellite decreases.
How long after the Soviets launched Sputnik did the US launch ExplorerI?
The USSR launched Sputnik on October 4th, 1957 and Explorer 1 was launched on January 31st, 1958--so the answer is 119 days.
allot
What is the Round Trip time of a RF signal for GEO satellites?
the speed of light = 299792458 m / s
GEO (Geostationary Earth Orbit) = 35863000 m above the Earth's surface
round trip time = 2*(35863000)/299792458 =0.239 s
the time needed for an RF signal to reach a GEO satellite and gets retransmitted back to a ground station on earth is approximately 240 milliseconds
(assuming zero signal propagation/processing time in the satellite and equatorial ground station location with the same longitude as the satellite slot)
Who is the Drummer for the Georgia satellites?
Todd Johnston. He also played with The Hodads, Roadhawgs, and Suckerpunch. In addition to the Georgia Satellites, he also plays with singer/song writer Bucky Hawg in Buck O Five.
