A little background info for those interested:
These are scheduled test events for verifying and validating the WAAS GPS
position-enhancement system for air flight guidance. Here is the report
issued in 2014 for the 2013 year:
http://www.nstb.tc.faa.gov/reports/PAN84_0114.pdf
You can see the tes
I'm heading to spend the night in Bend on Friday and then was planning to road
trip randomly all weekend, was considering Eastern Oregon. This is ridiculously
perfect. I'm totally willing to go along, not sure I'm up for driving people
though. But count me in, somehow!
> On Jun 22, 2015, at 1:2
The longest window is Saturday from 10a-5p local time. Can we get a dev
jGPSv3 running and assemble a Mt. McLoughlin away team by then? I'm up
for the drive with a couple passengers.
I wonder if this will impact any of the higher altitude rockets
acquiring GPS lock while at apogee this weekend a
As far as finding a spot to observe in Oregon, Mt. McLoughlin is a 9,500ft
non-technical peak in Southern Oregon that is 1NM from the 4,000ft AGL
boundary. I'd be totally willing to climb with a laptop for science.
On Mon, Jun 22, 2015 at 10:30 AM, Nathan Bergey
wrote:
> Woah, that's fascinating
Woah, that's fascinating.
We would need to get one of the other GPS boards streaming IQ data
reliably--which we really want to do anyway. It's too far of a trip to
take just for this, I think. Depends on how crazy we're feeling.
Might as well record somewhere high up in Portland (Skyline?) just i
To the GPS folks, there is an interesting event that will occur this week
starting in 15 minutes or so, and going on sporadically this week/weekend.
There is a planned GPS outage over a broad area detailed here:
https://www.faasafety.gov/files/notices/2015/Jun/NSAWC_15-01_GPS_Flight_Advisory.pdf
I was reviewing my old GPS Jamming slides and it terns out jamming can accrue
with a received jammer signal strength of -90dB. it is possible the 1575.02MHz
signal is still to strong and we are self jamming. is there a way we can change
the 25MHz clock to 12.5MHz to test this possibility?
I als
The Good News:
- Design review went great tonight. Thanks everyone for attending! I
tried sending the board to OSHPark, but their EAGLE file processor
choked on the board, so I'm waiting to hear back from them. Hey, Jenner,
help! :)
The Bad News:
Just for fun, Devin hooked up the avionics module
First pass comments/questions:
Sheet 2:
Question not answered about Analog ground
On sheet 4 AGND is used with the 2.85VA supply, so yes?
Sheet 4:
TODO note on sheet 4
I'd like to use MAX Clockout too...review how much time
delay in U5? Probably not significant unless it creates
a ho
> Can we do a design review on Tuesday?
We can, but honestly I'd like to fire it off before then. That said, if
I hear nothing but crickets I'll wait until Tuesday.
Andrew
--
---
Andrew Greenberg
Electrical and Computer Engineering
Portland S
Can we do a design review on Tuesday?
-Nathan
PSAS
On Wed, Mar 25, 2015 at 1:42 AM, Andrew Greenberg wrote:
> Hey! The v3 GPS board is done. Please pull and give me feedback as soon
> as you can, I'd love to ship this out ASAP.
>
> https://github.com/psas/gps-rf-board
>
> Things to think about:
Hey! The v3 GPS board is done. Please pull and give me feedback as soon
as you can, I'd love to ship this out ASAP.
https://github.com/psas/gps-rf-board
Things to think about:
- Split in ground/power planes - cute or stupid?
- What else is missing from the board?
- Probably not enough test point
I think, personally, that last weeks GPS class went very well.
Instead of lecture we tried to all work on our own implementations in
a language of choice. Being able to work on it in class as opposed to
as homework made it so we could get instant feedback on burning
questions about sample-rate and
Hey guys,
I got Linux working! And I even started using the od command on the file we
were given! But what do I do now?
Jeremy
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Hey all,
Jamey Sharp and I are starting up GPS study group that will take place
(at least at first) on Tuesday nights after the space news part of the
meeting. We plan to meet every Tuesday from now through the end of
November.
You're all invited! Please join us at 7pm for the regular meeting thi
Hi!
We've chosen the RF front end for both the FPGA and Soft GPS receivers.
It's the MAX2769:
http://www.maxim-ic.com/datasheet/index.mvp/id/5241
.. it outputs both serial and parallel data streams, which is perfect
for both apps.
Andrew
--
Hi everyone,
I'm sorry for such a late notice, I totally spaced sending this last
Tuesday. Tomorrow morning Eddy, Dan and I are going to meet at 9am in
the CS lounge to discuss FPGA-based GPS receivers. Anyone's welcome to
attend, although the discussion may focus on peeling masters theses out
of
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