.uk> (corrected from
previous email). For suitable items I'd be happy to pay postage, or if in the
UK collect.
Many thanks for any help.
Neil Salmon
"Before acting on this email or opening any attachments you should read the
Manchester Metropolitan University email disclaimer available on
.uk>. For suitable items I'd
be happy to pay postage, or if in the UK collect.
Many thanks for any help.
Neil Salmon
"Before acting on this email or opening any attachments you should read the
Manchester Metropolitan University email disclaimer available on its website
http://ww
cross-correlator technology
developments
On Sun, 16 Aug 2020, 11:59 am Neil Salmon,
mailto:n.sal...@mmu.ac.uk>> wrote:
Hi Dan,
I really appreciate the good points you make.
Certainly, NLogN versus N^2 in processing power for the two approaches can make
a big difference. Some of the
while it is true that FPGAs still have an edge in performing arbitrary
precision operations with high efficiency, GPUs are fighting in that space too.
Cheers
Jack
On Sat, 15 Aug 2020 at 05:37, Neil Salmon
mailto:n.sal...@mmu.ac.uk>> wrote:
Hi Danny,
GPU’s may be starting to rival
), but then compute the correlation in
floating point.
Best Wishes,
Dan
On Fri, Aug 14, 2020 at 9:37 PM Neil Salmon
mailto:n.sal...@mmu.ac.uk>> wrote:
Hi Danny,
GPU’s may be starting to rival FPGA’s in processing power for correlators.
However, are GPU’s restricted to long word correlatio
ion.
Best wishes,
Neil
From: Hariharan Krishnan
Sent: 15 August 2020 15:51
To: casper@lists.berkeley.edu
Cc: Neil Salmon ; dan...@berkeley.edu
Subject: Re: [casper] references to recent cross-correlator technology
developments
Hi Neil,
We have a GPU-based direct imaging correlator (EPIC
include a section on correlators in the document on security screening
imaging https://ieeexplore.ieee.org/document/9154708 and some of your selected
publications in the references – thank you.
Cheers,
Neil
From: Danny Price
Sent: 20 July 2020 14:44
To: Neil Salmon ; casper@lists.berkeley.edu
correlator with 1/2 GHz bandwidth.
We form beams in real time and interrogate them at better than ms cadence for
transients (frb).
The system is a bit big to picture hiding it in an airport.
mark
On 2020-07-20 07:12, Neil Salmon wrote:
> Hi Danny,
>
> Yes I can appreciate the differ
scenarios where the FT
relationship between physical space and spatial frequency space breaks down.
Cheers,
Neil
From: Danny Price
Sent: 20 July 2020 14:44
To: Neil Salmon ; casper@lists.berkeley.edu
Subject: RE: [casper] references to recent cross-correlator technology
developments
Hi Neil
performance in J. Kocz et al 2014
(https://arxiv.org/abs/1401.8288); for O(100) inputs a GPU correlator will
likely be memory bandwidth bound.
Cheers,
Danny
On 18 July 2020 at 7:54:49 pm, Neil Salmon
(n.sal...@mmu.ac.uk<mailto:n.sal...@mmu.ac.uk>) wrote:
I need references on recent develo
I need references on recent developments in cross-correlator technology for an
IEEE paper on the subject of aperture synthesis imaging in the area of security
screening of people for concealed weapons. Typical requirements for this
application are cross-correlators that can process in real-time
Dear All,
Historically, experiments in quantum entanglement have been performed in the
optical band and near IR/UV, unless you cool to cryogenic temperatures
(milliKelvin), so the thermally generated photons don't swamp the entangled
photon pairs.
However, receiver concepts exploiting radio
tion,
Advanced Engineered Systems Group
Pacific Northwest National Laboratory
From: Neil Salmon mailto:n.sal...@mmu.ac.uk>>
Sent: Wednesday, January 08, 2020 9:51 AM
To: casper@lists.berkeley.edu<mailto:casper@lists.berkeley.edu>
Subject: [casper] RE: Matlab Toolbox Requirements
In
In the longer term, move over to Python. N
From: 'Christman, Nicholas P' via casper@lists.berkeley.edu
Sent: 08 January 2020 17:38
To: casper@lists.berkeley.edu
Subject: [casper] Matlab Toolbox Requirements
Good Morning CASPER Group,
My name is Nick Christman and I’m currently working through
Dear Gary and Neal,
I have similar requirements for non-radioastronomy passive mm-wave imaging
applications, which may lie close to those of Lockheed Martin. I did find it
difficult to adapt CASPER hardware as it has requirements not entirely aligned
with these non-classic radioastronomy
Hi Stan,
I needed hundreds of receiver channels beam-former, and with yours an order of
magnitude higher, low front-end receiver channels costs are pretty key, plus
the fact that the backend number crunch power needs to pretty large, a
commercial solution might be the lowest cost option,
,
offering codes in a range of languages, including Matlab with mex functions for
C programs. Might any known how good/easy these codes might be to implement, to
do the equivalent of convolution gridding? Or perhaps might there be better
algorithms from elsewhere?
Neil Salmon
"Before a
Two studentship now available to develop novel technologies which exploit
coherence theory using high-speed FPGA sampling and processing. These have
separate applications but the main theme is using the crunch power of FPGAs
linked to sensors to find novel algorithms to accumulate key
There's a PhD studentship to work with me in the Imaging and Sensing group at
Manchester Metropolitan University. The main drive of the work I'm interested
in is the use of digital type radio receivers which sample short words (single
bit, 1.5bit 2 bits) and then digitally cross-correlating
to design the digital receiver boards and FPGA boards
at these frequencies?
Many thanks,
Neil
From: Jack Hickish [mailto:jackhick...@gmail.com]
Sent: 18 December 2015 17:26
To: Neil Salmon; James Smith
Cc: casper@lists.berkeley.edu
Subject: Re: [casper] building 300-receiver channel cross-correlator
AM, Neil Salmon wrote:
Thank you for your response. The system is part of a generic microwave/mm-wave
aperture synthesis imaging system, so there’s an array of front-end heterodyne
receivers with an IF earmarked at a centre frequency of 3 GHz (away from Wifi
mobile comms), but the bandwidth
use to design these boards?
Thank you again for help.
Neil
From: dan.werthi...@gmail.com [mailto:dan.werthi...@gmail.com] On Behalf Of Dan
Werthimer
Sent: 18 December 2015 17:31
To: Neil Salmon
Cc: James Smith; casper@lists.berkeley.edu
Subject: Re: [casper] building 300-receiver channel cross
Anyone help?
I'm working in academia and need to build a 300-receiver channel single-bit
digitiser / cross-correlator with a single frequency channel having a bandwidth
of 300 MHz, centre frequency ~3 GHz. The single bit digitisers sample I
giving a total data rate of 180 Gbps and using XOR
Jack,
Thanks for help. Do you have any idea of the I/O capacity of a single Roach2
board – just trying to figure out how many I may need?
Thank you,
Neil
From: Jack Hickish [mailto:jackhick...@gmail.com]
Sent: 18 December 2015 15:08
To: James Smith; Neil Salmon
Cc: casper@lists.berkeley.edu
asic building
blocks right first then fill in the gaps. I'll check out the pico computing.
Thanks for help.
Neil
-Original Message-
From: John Ford [mailto:jf...@nrao.edu]
Sent: 18 December 2015 15:06
To: Neil Salmon
Cc: casper@lists.berkeley.edu
Subject: Re: [casper] building 300-rece
our help.
Neil
From: James Smith [mailto:jsm...@ska.ac.za]
Sent: 18 December 2015 14:25
To: Neil Salmon
Cc: casper@lists.berkeley.edu
Subject: Re: [casper] building 300-receiver channel cross-correlator
Hello Neil,
CASPER tools could probably do what you're looking for, but I found your
descripti
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