Re: [amsat-bb] Programmer needed for RUDAK WOD

[Christopher Cox <chrisc@xxxxxxxxxxxx>]

Hi Dave,

I am not sure why they called it DOS time. It is the number of seconds 
since 1/1/1970, the way Unix has been portraying time for as long as I 
can remember.

Later

Christopher Cox

David Rush wrote:

> I've got the brunt of the job done... just need to finish the "do the math".  However, I don't know how DOS encodes time.  Any hints from 
> anyone on how to decode that?
> 
> BTW, I'm doing it in Perl.
> 
> David, ky0dr
> 
> 5/16/01 4:58:40 PM, "Jim White" <jim@coloradosatellite.com> wrote:
> 
> 
>> Programmer needed to help with RUDAK telemetry.
>> 
>> Looking for someone with some windows programming experience to quickly 
>> write a small application to decode and display whole orbit data (WOD) 
>> collected by AO-40 RUDAK.  Must be experienced and be able to work without 
>> much guidance.
>> 
>> I've placed on my web site a file called WD051300.  It's a binary file 
>> containing one orbit worth of temperature data from the CAN/LAN sensors on 
>> AO-40.  I need someone to write a little application to do the following:
>> -       Read in that file
>> -       Extract the information in the header which includes the start 
>> time, end time, number of channels, list of channels
>> -       Read in the RUDCOEFX file (also on my web site) which contains the 
>> coefficients used to turn the binary numbers into degrees C
>> -       Do the math to calculate the engineering units (in this case they 
>> are all degrees C)
>> -       Output a comma separated text file containing on each line the time 
>> stamp and the values for each channel.  That file can then be read into a 
>> spread sheet program for graphing and analysis.
>> 
>> This is about a 1/2 day job for an experienced programmer.  I just don't 
>> have time to do it and meet other obligations at the same time.  It's your 
>> chance to contribute in an meaningful way to the AO-40 effort.  This data 
>> is of immediate interest because it has not been looked at since launch 
>> except occasionally in real time.  Dick Jansson, WD4FAB, is the immediate 
>> customer.  However the WOD facility can be used to store data for all 
>> telemetry on the satellite and this program should be flexible enough to 
>> extract that data and create the output file.  The resulting program will 
>> become public domain and be available to anyone for use once RUDAK becomes 
>> operational.
>> 
>> Interested folks should just go do it.  The files are at 
>> www.coloradosatellite.com.  Follow the link to AO-40 RUDAK, then the link 
>> to the RUDCOEF file and the WOD file.  There is a brief explanation of the 
>> file format there along with the files.  Sorry, I just can't spend a lot of 
>> time coaching on this effort.  If you can do it with the information on the 
>> web site I'd be delighted to see your results.  The temps should be in the 
>> range of about +10 to +20 degrees C except for two of them which were bad 
>> prior to launch and will be a large number.  If you don't quite have enough 
>> experience to crank this one out there will be other opportunities.
>> 
>> Jim White
>> jim@coloradosatellite.com
>> 
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> 
> 
> 
> 
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