Linked Questions

25
votes
4answers
10k views

Does the International Space Station get TV?

For obvious reasons the ISS cannot get cable TV. Can the ISS get the new digital air TV or satellite TV using an issued dish and receiver like a house? How would that be done compared to how it is ...
24
votes
2answers
3k views

What is the function of this (apparently) fixed dish on the ISS?

I saw this image in Popular Science, one of the example photos from the book by astronaut/photographer/astrophotographer(?) Donald Pettit. It's beautiful and impressive not only from a color/...
24
votes
2answers
6k views

What is the purpose of the rotating dish antenna on the ISS

I just saw some footage of the ISS in which a dish antenna could be seen, constantly rotating. The dish looked more-or-less parabolic, meaning that it is presumably sending/receiving along a fairly ...
48
votes
1answer
2k views

How long is the ISS out of reach of all ground stations?

This is a followup to a recent question and answer discussing ground-based monitoring of the International Space Station, specifically in the context of an astronaut crew that is all asleep. How ...
12
votes
1answer
3k views

When does the ISS have a loss-of-signal?

The ISS has a camera mounted streaming live video from space (HDEV). From time to time, there is a blue screen visible, which is noted to be during times of "loss of signal". What exactly defines a "...
5
votes
3answers
797 views

SAR image processing

Is it possible for conventional x86 based processor/High precision GPU to be used for image processing for space borne Synthetic Aperture Radar (SAR) system? If not, are there alternatives using ...
8
votes
1answer
977 views

What makes an antenna “high gain”, and high gain as opposed to what alternative(s)?

Whenever communications to/from a space vehicle are described or discussed, there is inevitably a reference to the vehicle's "high gain" antenna. What is it about such an antenna (specific technical ...
6
votes
2answers
747 views

What is this spinning object seen on a spacecraft above the ISS?

In the YouTube Trailer for the PBS program A Year in Space at 00:56 a small spinning object can be seen, attached to a spacecraft well above the ISS. I think the ...
8
votes
1answer
452 views

Why are there times when the ISS can transmit audio, but not video?

I am watching the live stream of today(9/1/16)'s spacewalk. The ISS entered a position in space where the video feed was lost, but they are still able to broadcast the audio conversations between the ...
3
votes
1answer
457 views

What are the sounds in this GoPro-in-orbit ISS video?

The video description says: Published on Apr 15, 2015 This footage was taken by U.S. astronaut Terry Virts during a spacewalk on the International Space Station on February 25, 2015. Virts and ...
2
votes
0answers
397 views

How exactly does the live feed from ISS work?

Using my cell phone in a city to download lots of data very fast is common, thanks due to the dense net of base stations close to me (~1 km). But with the space station about 400 km above ground and ...
2
votes
0answers
310 views

How do satellites communicate with a relay satellite?

Although the exact usage of the system is classified, NASA has a system called TDRS which is used by other government agencies for relaying data to ground stations. To maintain communications with a ...