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question about terms used with Pioneer 6
ncc1701d
post Mar 6 2019, 02:40 AM
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Hello,
I have been doing some research on Pioneer 6. I needed to convert a 2- 36 bit word double precision octal sequence into the number of seconds past 1950. The image Iam uploaded provide examples of what the answers should be after conversion to date. My main question is, does anyone know what MSP and LSP stand for? I was thinking maybe MSP and LSP was some well known JPL abreviation for something.
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mcaplinger
post Mar 6 2019, 03:07 AM
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QUOTE (ncc1701d @ Mar 5 2019, 06:40 PM) *
does anyone know what MSP and LSP stand for?

Most significant/least significant part.

Floating point double precision is a clue. Pioneer 6 was run by NASA Ames, I'm not sure what computer types they were using (this was long before IEEE floating point standardization.)


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Disclaimer: This post is based on public information only. Any opinions are my own.
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- ncc1701d   question about terms used with Pioneer 6   Mar 6 2019, 02:40 AM
- - mcaplinger   QUOTE (ncc1701d @ Mar 5 2019, 06:40 PM) d...   Mar 6 2019, 03:07 AM
|- - ncc1701d   QUOTE (mcaplinger @ Mar 6 2019, 03:07 AM)...   Mar 6 2019, 03:59 AM
- - nprev   Admin note: Topic moved to Chit Chat from Mars sec...   Mar 6 2019, 04:06 AM
- - AJAW   I think the first three octal digits are the expon...   Mar 10 2019, 06:34 PM

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