Tag: communication-satellite

24 Can a satellite orbit Earth so that it always has the Moon in line of sight? 2014-10-20T17:58:14.840

22 SpaceX's 4,425 satellite constellation - what's the method to the madness? 2016-11-17T23:50:26.173

16 Why are obsolete geostationary satellites re-orbited above the geostationary belt? 2017-04-07T16:36:38.890

14 How many dead sats near GEO? 2015-05-22T19:59:27.433

13 How much will SpaceX's constellation of Internet satellites cost? 2017-02-27T15:49:02.357

12 Can communication satellites be used in lunar orbit? 2013-08-07T10:35:45.630

12 What (actually) makes Iridium "the world's only truly global mobile satellite communications company"? 2016-10-28T09:58:11.173

11 Are Molniya orbits used apart from Russian communication satellites? 2013-07-31T23:29:33.233

10 How can OneWeb constellation succeed where Teledesic failed? 2015-06-15T14:49:07.067

10 How does QUESS, China's quantum communications satellite experiment, relay entangled signals? 2016-08-16T14:03:16.767

10 How can just making the ground broadcast stronger neutralize a zombie(sat)? 2016-12-12T12:12:29.420

9 Is it possible to replace Internet with LEO satellites? 2015-07-28T05:46:53.813

9 Why do geosynchronous satellites appear to oscillate in North-Southward direction? How to I trace out their path on the surface of the earth? 2016-08-01T12:48:06.610

8 Can I use Iridium as a receiver network for my satellite? 2014-12-13T19:42:33.753

8 Radiation pattern and signal strength of navigation satellite antennas 2015-12-03T05:27:11.063

8 What is the expected lifetime of observable Iridium flares? 2016-02-12T08:51:19.640

8 Do antennae on the ISS have to constantly move to maintain data links? 2016-06-05T06:01:40.270

8 Could a smartphone really transmit to satellites in a space based internet system? 2016-11-27T13:35:49.580

8 How do commercial broadcast satellites in GEO produce such carefully shaped signal footprints? 2017-03-29T02:21:57.870

8 Do satellite uplink/downlink signals spread or leak into space? 2018-03-09T17:48:29.837

7 Could a communication satellite that fails to reach GEO be repurposed? 2015-08-20T07:38:21.967

6 Could a (differently) inclined orbit remain above a Lunar pole half of every revolution? 2015-02-06T11:02:42.233

6 How do communication satellites remain positioned above a particular region? 2016-02-03T04:59:00.910

6 What will be "unique" about upcoming SES-9 GTO transfer profile by SpaceX? 2016-02-24T08:21:42.807

6 How are multiple low orbit communication satellites per launch distributed along an orbital plane for global coverage? 2017-05-13T11:32:56.877

5 How are geosynchronous satellites launched to such an incredible height? 2014-07-14T12:51:38.290

5 Cubesat communication services 2015-03-16T10:54:30.960

5 How much time does it take to circularize a GTO orbit using ion propulsion? 2016-06-06T09:40:28.057

5 When there is more power than needed, are satellite photovoltaics shunted or open circuit? 2016-07-27T14:49:05.377

5 Is secure communication in space important? 2017-04-30T05:34:32.483

4 How will SES-9 reach geostationary orbit from inclined transfer orbit (from F9 2nd stage) 2016-02-24T16:21:37.657

4 Earth-Mars Radio Blackout: Is it possible to define an extended solar radius to solve this as a geometric problem? 2016-11-04T20:18:14.943

4 For constellations of circular LEO satellites, are there allocations of available "slots" in altitudes? 2016-11-20T06:10:27.507

4 At what magnitude would adjacent large geostationary communications satellites see each other? 2016-12-12T06:42:31.290

4 How many communication antennas does a satellite need if it belongs to a constellation? 2017-02-28T07:11:22.313

4 Were solar concentrators on HS-702 just a stop-gap measure until triple-junction PV cells were available? 2017-05-07T07:16:39.437

4 What are these very large, square panels on Inmarsat 5's? 2017-05-15T17:02:24.447

4 Are sun outages having more limited impact in some cases? 2017-05-31T15:02:30.673

4 Is the utility PREDICT good enough for operational orbital prediction? 2017-07-17T11:02:52.957

4 Can a satellite scan an entire continent to search for someone? 2017-09-05T23:22:17.700

4 Can they watch TV at the South Pole? What satellites are used for data, comms, and entertainment? 2018-02-13T20:23:22.193

3 Elevation Angle from Earth Station antenna to Mars 2014-06-13T14:49:56.893

3 How do polar satellites disrupt communications between GEO satellites and ground control? 2014-10-23T10:44:14.020

3 What is a feeder uplink/downlink? 2015-01-18T01:17:04.747

3 All Optical Global Network - how does the space-to-ground link avoid clouds? 2016-10-13T04:49:59.747

3 Is it possible for small satellites to orbit in MEO or GEO? 2017-04-06T13:33:21.463

3 How do we track the exact location of the spacecraft which is millions or billions of miles away from us? 2017-04-26T07:41:19.533

3 Is a space probe communication relay possible? 2017-06-05T18:22:38.163

3 What is the most popular programming language in space? 2017-06-14T00:48:46.810

3 Radio Link Design of a low power, sensors to satellite communication system 2017-06-16T16:24:18.857

3 Is TDRS-M (TDRS-13) where it's supposed to be? 2017-10-03T00:59:51.320

3 Difference between Tundra and Molniya orbits? 2018-01-03T00:40:07.223

3 How to design a ground antenna for sending & receiving from a satellite? 2018-01-07T13:53:28.370

3 How stable is an orbit of 335.9 km? 2018-02-23T16:40:46.840

2 Do space satellites have physical intrusion sensors? 2015-05-22T22:21:27.127

2 Calculate communications window for LEO 2016-05-23T10:30:28.883

2 How exactly does the live feed from ISS work? 2016-07-15T07:00:47.610

2 Satellite Remaining Life 2016-08-11T03:01:51.013

2 Inter-satellite linking for satellite constellations? 2016-10-15T18:12:29.977

2 Inter-Satellite Link (ISL) for TV broadcast 2017-05-31T13:47:07.727

2 How can satellites serve a large number of devices on earth? 2017-06-20T11:02:05.647

2 Would adding satellites between Earth and Mars improve communications latency? 2017-10-03T07:02:41.687

2 Would there be any advantage to set satellites closer to the sun? 2017-10-05T14:31:06.577

2 Are there any protocols the space station follows if there is an Earth-wide catastrophe? 2017-10-27T23:12:37.493

2 Rapid deployment of cubesat network with Gauss cannons 2017-11-05T17:04:53.567

2 Satellite Intra link 2017-11-08T15:45:00.800

2 How much do solar cells for space cost? 2017-12-21T11:08:28.470

2 Mars Mission Blackout/Whiteout Period Communication Options 2018-02-20T04:57:18.797

1 Are Sun-Earth Lagrange points SEL1 and SEL2 useful for communication and space surveillance? 2015-07-26T08:04:58.000

1 Tools to evaluate telecommunications link budget 2016-04-16T06:02:32.793

1 Cost of different kind of band in satellite 2016-08-11T04:22:56.287

1 Does a low-orbit communication network drive a sustainable launch market? 2016-11-19T16:44:31.773

1 Telecommunication CubeSats 2018-01-14T13:31:49.680

1 What are the photonic components on Hispasat 30W-6? What do they do? 2018-03-06T06:54:44.367

0 How can the data rate be increased in the space which is full of noise? 2017-04-26T06:08:09.627

0 How do Inmarsat 5 F4's beams correspond to all those antennas? 2017-05-15T12:58:03.830