On 10/9/2015 9:01 AM, David wrote:
At Mon, 21 Sep 2015 10:40:10 -0400, rickman rearranged some electrons to
write:

On 9/19/2015 8:09 AM, David wrote:
At Wed, 16 Sep 2015 17:30:56 -0400, rickman rearranged some electrons
to write:


I got a little knowledge on the EMSP. I seem to recall it never
reached deployment, but I find Internet references to it being the
standard acoustic platform at some point. I can't imagine 1980's
technology would be used even in 2000, much less now. I guess they
did some upgrades before it reached production.

Every single bare circuit board used on AN/UYS-2 was tested using
programs that I wrote. Back in the day.

Maybe you can help me understand. I was on the program when it first
got started. ATT got the contract to develop the hardware and it was
all fully custom ICs.

Yes. My employer.

I thought in the end the entire program was canceled.
But I find references that say it was the system used in the 90's
which is really surprising.

http://fas.org/man/dod-101/sys/ship/weaps/an-uys-2.htm



Did I hear wrong or was it just exaggerated? Where was this processor
actually used? I think it the program was started by the Navy for use
on submaries, so I assume they would have been the last user to stay
with the program.

The submarine world is now using mostly COTS hardware to perform these
functions.

http://www.militaryaerospace.com/art...rci-sonar.html

That is clearly the smart thing. I see this in the link above.

"AN/UYS-2 COTS Variant (ACV)"

So they built a few of the EMSP but scrapped it before building more and
switched to COTS hardware. Before I worked for TRW where I learned of
the EMSP I worked for Start Technologies where they built a 100 MFLOPS
array processor. It would have required a total redesign to meet the
environmental requirements, but they could have done the entire EMSP on
the ST-100 easily. ST developed a 50 MFLOPS version that fit in a
single card cage. It would not have taken too much effort to have made
that in a rugged version suitable for mil apps.

In the end, all these designs were over taken by commercial designs to
meet the demands of the cell phone market.

--

Rick

At Sat, 10 Oct 2015 02:35:54 -0400, rickman rearranged some electrons to
write:


So they built a few of the EMSP but scrapped it before building more and
switched to COTS hardware.

Many more than a few. They are probably all sitting in a warehouse
somewhere, beside the Ark of the Covenant.