On 21/09/2011 11:34 AM, Andrew Rich wrote:
I was just looking at the N200
Do these hardware components have sensitivity figures ?
That depends entirely on the daughterboard you chose. Although most of
them have noise figures in the 4-5dB range at maximum gain.
If you're just interested in RX in the 1090MHz range, I'd suggest the
DBS_RX2. Sensitivity is dominated by noise figure. If you need
lower noise figures you'll have to put a band-specific LNA in front,
which is what I do for radio astronomy.
I am interested in passive RADAR
I have been using a 1090 MHz receiver and a cheap digital OSCilloscope
commaned under LINUX as a capture device.
I guess that is sort of what the hardware and software of an SDR does ?
My system is very slow
In an SDR, nearly-all the processing is done on the host computer, so
you need a fastish computer. Overall compute requirements
are roughly proportional to sample_rate * complexity-per-sample.
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