Xref: utzoo sci.space:22997 sci.space.shuttle:6007
Path: utzoo!utgpu!news-server.csri.toronto.edu!clyde.concordia.ca!mcgill-vision!snorkelwacker!usc!sdd.hp.com!zaphod.mps.ohio-state.edu!samsung!munnari.oz.au!metro!natmlab.dap.csiro.au!ditsydh.syd.dit.CSIRO.AU!hamilton
From: hamilton@syd.dit.CSIRO.AU (Paul.Hamilton)
Newsgroups: sci.space,sci.space.shuttle
Subject: Current Satellite Technology...
Message-ID: <1990Aug16.041407.22517@syd.dit.CSIRO.AU>
Date: 16 Aug 90 04:14:07 GMT
Organization: CSIRO Division of Info Tech, Sydney, Australia
Lines: 59

I am seeking background  information regarding the onboard systems 
technology used on Magellan, Galileo and Hubble. All information is 
requested on a purely amateur basis.

The specific areas in which I seek information are:

		System level specifications for each satellite
		
		Hardware
		-  General block structure etc...
		-  Specific device details
		     CPUs
		       Chips or technologies (80C186,OBP, AOP...)
		       Speeds  (Mips... MHz)
		       Interface mechanisms (polling/interupts etc...)  
		       Bandwidth available/required
		       etc...  
		     Memory
		       Protection facilities (hardware/software?)
		       Chips or technologies
		       Physical organisation
		       etc...
		-  Construction Techniques (SMT etc...)
		-  Interfaces
		     Telemetry Interfaces
		       Mechanisms(parallel/Serial/AART/LAN...)
		       Regularity of transimssion
		       Flexibility
		       etc...
		     Onboard Experiment interfaces
		       Mechanisms(parallel/Serial/AART/LAN...)
		       Separate CPUs?
		       etc...

		Operating systems (or the equivalent...)
		-  Operational requirements
		-  Performance issues
		-  Block structure of the systems 
		-  Parentage (Unix, Multix,Flex...)
		-  Applications interface general information 
		-  Flexibility

		Communications Protocols
		-  Error correction mechanisms

All replies should be directed by email to

	hamilton@syd.dit.csiro.au


Should sufficient information be accumulated, I will post a summary
 to this news group.


Thanks in advance..

Paul Hamilton...  : -)
CSIRO Division of Information Technology... 
Sydney Australia