logo

ALL



Cluster Activity

Spots per uW band today:
UK spotter or spotted only.

Solar data:
SFI
2
A-Index
0
K-Index
14
Exp.K
qui
Sunspots
qui
Activity
no
GMF
Aurora?
M0DTS

My Weather

ArrayDate:02/08/20 Time:15:43
Temp:20C
Wind Speed:0mph
Wind Dir:112deg
Pressure:1012.96mB
Humidity:250%
Dew Point:50C
UKHASnet

Here i plan to make some code snippets as i go along to maybe help others do what i found very difficult when first learning about Digital Signal processing.
Nothing here will be perfect but the ideas are there to get you started, and then hopefully correct my mistakes!

Basically this is code that takes in IQ samples from an sdr receiver like the rtl dongle.
Idea is to make blocks of code that do the different parts of the dsp chain to receive an SSB and fm signal etc...

Eventually a chirp receiver too if i'm lucky!

More will be added when i get round to it!


See DSP# in the headers for related bits.

Rob



Code 'beautifying'! is done with http://hilite.me/


Command line example:
rtl_sdr -p 70 -f 144750000 -s 1024000 - | ./mixer | ./decfir | ./ssbdemod | aplay -c 1 -t raw -r 32000 -f FLOAT_LE -


















Last page added:25/03/00 18:32
M0DTS.co.uk