On 4/3/17 9:32 PM, Logan Cummings wrote:
Dave,
I was able to find [2] here:
http://web.stanford.edu/group/scpnt/gpslab/pubs/papers/Akos_IONGPS_2003_3FreqRX.pdf
So those folks were trying to use 1 ADC for all three bands, so they had
to choose a sampling rate that lets them separate the signals later in
software.
But that ADC is a MAX104 - a 1GSPS, 8 bit converter - that draws 5 Watts!!!
I'm not sure that's a good trade against a 1 or 2 bit converter for each
band, in terms of the downstream data rate and processing.
[3] was harder, and I don't have a link but a google search for the title
in quotes got me a link on semanticscholar that let me download the PDF.
Interesting stuff!
Hope that helps,
-Logan
On Fri, Mar 31, 2017 at 9:17 AM, David C. Partridge <
david.partri...@perdrix.co.uk> wrote:
links [2] and [3] give 404 errors
Dave
-----Original Message-----
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Attila
Kinali
Sent: 31 March 2017 12:35
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] GPS first LO need to be locked?
[2] "A Prototyping Platform for Multi-Frequency GNSS Receivers", by Akos,
Ene and Thor, 2003 http://waas.stanford.edu/~wwu/papers/gps/PDF/
AkosIONGPS033FreqRX.pdf
[3] "Design of a GPS and Galileo Multi-Frequency Front-End", by Parada,
Chastellain, Botteron, Tawk, Farine, 2009 http://202.194.20.8/proc/
VTC09Spring/DATA/04-04-01.PDF
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