Space Exploration Stack Exchange
Space Exploration Stack Exchange

Questions tagged [communication-satellite]

Questions about satellites designed to aid in communications, such as phone, TV and Internet satellites.

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Is it possible to replace Internet with LEO satellites?

Bulk information regarding anything in this world is available in a single touch through Internet. My question is whether it is possible to replace this Internet with a constellation of Cubesats in low Earth orbit for transferring data all over the…
Romean
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What is the expected lifetime of observable Iridium flares?

I enjoy spotting and occasionally attempting to photograph Iridium Flares: (Iridium flare with airplane trail) They're caused by sunlight reflecting off the antennaes of the satellites that make up the Iridium communication satellite constellation,…
James Thorpe
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Are relay stations possible between planets?

I recently participated in a hackathon where we were looking at various space-related challenges and one that we considered was communications between Earth and Mars. The hackathon is over now but I still think about the problem now and then. Would…
Henry
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Are most commercial satellites communication satellites?

Is it true that commercial communications satellites account for the largest share of commercially used satellites?
FalconHeavy321
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How do polar satellites disrupt communications between GEO satellites and ground control?

I don't understand how we can get an uninterrupted line of sight with geostationary satellites with the presence of a high number of polar satellites in Earth's orbit. When microwave signals are used between GEO satellites and any base station, we…
luay
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Cell-Free massive mimo for satellite communication design

I am interested in LEO satellite communication and its integration into a 5g terrestrial network. Cell-free massive mimo (CFmMIMO) is a concept used in 5G design. It looks, CFmMIMO can be used if we design UL (terrestrial-to-satellite). As I…
Aid22
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How to compute footprint(size) of beam of sat.system?

I need to compute the footprint (ground area that its transponders offer coverage) of beam diameter. Given different frequencies, distance between a satellite and ground station. I have found the same calculation: it was presented by mynaric Could…
Adil.Kolenko
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Could you theoretically launch your own satellite and transmit satellite phone signals to it?

This is a RF and Space question mix, and I am new here and didn’t know where else to ask, so I asked here! This is in the United States btw.
Ryan Pushkarna
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How to calculate azimuth and elevation angle between aircraft and GEO satellite (in aircraft coordinates)

Given a fixed ground station, it is known how to calculate the azimuth and elevation. If changing it to an aircraft which is changing its data (location, altitude, angles) and working with same satellite, the antenna shall change its direction on…
user1977050
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What is the average weight and price of a telecom satellite?

I found a source estimating the average weight of commercial communications satellites and then I think maybe there is more such data about price and launch price too. And then my question is about the average weight, price and launch price for such…
Joe Jobs
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How to lease a transponder on a GEO satellite?

I have an interesting question. I was thinking about it a year ago when the es'Hailsat 2 was not launched. There was an organization called "Outernet" that promissed to broadcast files (including ham radio APRS packets) from geostationary satellites…
Hose Dias
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What technologies are to used to broadcast signal from space?

I have seen a lot of companies offering a satellite phone service. But I have not seen anyway to broadcast my own signal from space. What technology (that I can google) do they use to send their signal (on the L and Ku band)?
Iogann Valdt
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What are the photonic components on Hispasat 30W-6? What do they do?

In the marketing blurb about the payload in the SpaceX video HISPASAT 30W-6 Mission beginning at T- 00:05:45, there is mention of a demonstration of photonic components. The "mention" itself starts at about T- 00:04:05: Hispasat 30W-6 is the fourth…
uhoh
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inter orbital link: frequency band

In technical documentation, it is discussed inter-satellite links. As I understood, under inter-satellite link they mean a link between satellites allocated on the same orbit, LEO to LEO, MEO to MEO, and GEO to GEO. But there is a link between…
Anna Koroleva
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How much did the cheapest communications satellite cost?

Satellite communication is becoming bigger and better, and I wanted to find out more.
Ryan Pushkarna
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