Questions tagged [deep-space-network]

Deep Space Network is a series of communication antennas around the world used for communication with deep space spacecraft.

14 questions with no upvoted or accepted answers
Filter by
Sorted by
Tagged with
8
votes
0answers
290 views

How does one test Ground Segment communications with, and “downlink” data from a spacecraft that's still on the ground?

NASA News item Ground Segment Testing a Success for NASA’s James Webb Space Telescope says: Testing teams have successfully completed a critical milestone focused on demonstrating that NASA’s James ...
8
votes
1answer
149 views

Can ESA control the two Voyager spacecraft?

This is such a dumb question. There are many space organizations. Let's take ESA for this case. Given the two Voyager spacecraft are transmitting a weak radio signal to the Earth, can ESA command and ...
4
votes
0answers
81 views

Why is the Deep Space Network now testing an asteroid redirection mission that hasn't launched yet?

The Double Asteroid Redirection Test is a planned demonstration of the ability of a spacecraft to impact into and redirect the path of an asteroid. The test is part of plans to develop a system to ...
3
votes
0answers
136 views

How many solar system bodies have had coherent radio transponders?

A transponder amplifies, (often) frequency-shifts, and rebroadcasts a received signal. Old-style telephone and TV distribution satellites in GEO used simple transponders to rebroadcast the uplinked ...
2
votes
0answers
47 views

Tradeoffs between using two 34 m and one 70 m Deep Space Network dish?

Discussion at this answer to Why does DSN sometimes uses two dishes at the same time to receive Voyager-1? include the possibility that in some cases it would be preferable to use two 34 meter DSN ...
2
votes
0answers
72 views

Is it common for the Deep Space Network to contact a TDRS satellite?

As I write this, one of the Madrid dishes of the Deep Space Network is in contact with TDRS satellite #13. I've never seen DSN contact a TDRS satellite before. I thought that system has its own ...
2
votes
0answers
43 views

How often has weather interfered with the Deep Space Network?

This answer provides some information about the potential that precipitation can interfere with signals of the Deep Space Network. In practice, how often (a count, ratio or percent) has weather ...
2
votes
0answers
58 views

Understanding shape of DSN's 'kinky uplink protocol' keeping frequency in coherent transponder's optimum bandpass?

This tweet by deep space SDR enthusiast and amateur radio operator Edgar Kaiser @df2mz shows a squiggly tone from MRO. Mars Reconnaiscance Orbiter (MRO) X-band downlink. The signal shows this ...
2
votes
0answers
230 views

Did any of Voyagers' receivers' front ends take advantage of the “cold of space” to lower noise?

Most of the Voyagers' electronics are kept warm by electrical heaters powered by their RTG's, and presumably protected by some amount of insulation from the "cold of space" which means loss of heat ...
1
vote
0answers
49 views

Was Dart antenna tested using a DSN antenna located in Australia?

So recently a tweet by a bot which tracks communications by the Deep Space Network stated that: DSS 43 receiving data from Double Asteroid Redirection Test at 312.5kb/s. IN LOCK IN LOCK 1 TURBO 11:11 ...
1
vote
0answers
78 views

Has Same Beam Interference (SBI) been used or at least tested at Mars? Are there plans to use it in the next few years?

Section 5.4 of Descanso I, Radiometric Tracking Techniques for Deep-Space Navigation by Catherine L. Thornton and James S. Border titled Future directions in Radiometric Tracking; Same Beam ...
1
vote
0answers
81 views

In terms of satellite networks What exactly are RTSWnet/AFSCN and CDAS (NEN, DSN as needed)? Are they like TDRS but for strictly military data?

Question: In terms of satellite networks What exactly are RTSWnet/AFSCN and CDAS (NEN, DSN as needed)? Are they like TDRS but for strictly military data? BACKGROUND: In this answer to Why Are EPIC/...
1
vote
0answers
42 views

Weather forecasts of upcoming passes

Does NASA currently use weather forecasts of an upcoming passes to assign appropriate channel data rate with Mars Reconnaissance Orbiter (MRO) and Mars Odyssey Orbiter (ODY)? I was looking at DSN ...
1
vote
0answers
59 views

Overlap in the incoming and outgoing Deep Space Station’s (DSS's) uplink/downlink windows

I want to create an antenna array of DSS-25 of Goldstone Deep space Communication Complex (DSCC) and DSS-35 of Canberra complex to communicate with Mars Reconnoissance Orbiter (MRO). Suppose that DSS-...