I hate spelling correction at times. The distance BETWEEN Earth and Mars
varies. Where the heck did veteran come from?
Sent from my Verizon Wireless Droid
-----Original message-----
From: Bob McGwier <[email protected]>
To: bill <[email protected]>, [email protected]
Sent: Mon, Aug 13, 2012 15:02:03 GMT+00:00
Subject: [FlexEdge] OT Re: ok rocket scientists
Well, like all these kinds of questions, it depends.
First, the distance veteran the earth and mars varies tremendously. The
Rover and all of the relay satellites in orbit send data at a rate that
changes with this distance. Right now the light travel time is
approximately 13 minutes one way.
Second, there are MANY cameras on the river and many different resolutions
resulting in pictures of different sizes. Further the compression
algorithms results vary depending on the image content.
Third the pictures compete with all of the other science data that wants to
come down and the links don't operate 24 hours a day. The relay satellites
are in low Mars orbit and get a few minutes over the lander. So there is a
major scheduling activity that precedes each Sol (Martian Day), complicated
further by that being longer than an Earth Day by 40 minutes or so.
I am assuming that by now you realize this all takes serious computer code
to schedule and there is no one right answer.
Bob
Sent from my Verizon Wireless Droid
-----Original message-----
From: bill <[email protected]>
To: [email protected]
Sent: Fri, Aug 10, 2012 17:52:00 GMT+00:00
Subject: [FlexEdge] ok rocket scientists
How long does it take from the time Curiosity takes a pictures/processes
it for transmission to reception by NASA?
Is the picture sent in segments and does NASA use a 'checksum' type
system to make sure of proper reception.
Today's pics were better than I took of my dogs yesterday, and they were
just a few feet away from me lying in my lawn!
--
Any clod can have the facts - having opinions is an art.
---------------------------
W9OL-Bill H. in Chicagoland
webcams at http://w9ol-towercam.webhop.org:8080
My weatherpage at http://home.comcast.net/~w9ol/WX/HH.htm
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