On 9/28/13 7:32 AM, Hal Murray wrote:
jim...@earthlink.net said:
Scrolling down, it looks like they're getting a whopping 0.5 dB SNR on
the Crab Nebula pulsar.
How much of the noise comes from local sources vs thermal or galactic?
These are amateurs, so they're probably not using cryocooled receivers:
a good part of the noise is kTB noise in the receiver.
I'm missing the scale factor for the big picture. How big a volume does this
work over before I have to start counting fringes or something like that?
Wiki says the longest one is 8.5 seconds. That's small even on the scale of
the Solar system.
You also get direction, so for a "navigation" system, you can figure out
where you are.
Time wise, you'd have to count ticks.
Is there some trick I'm missing? Are there lots and lots of pulsars at
different frequencies so I can beat them against each other to make larger
synthetic fringes?
Are X-ray or gamma-ray pulsars (much) slower?
_______________________________________________
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
