Reading

Meteor Scatter theory:
https://en.wikipedia.org/wiki/Meteor_burst_communications
-------------Meteor Scatter projecting:--------------------------------
http://www.george-smart.co.uk/wiki/Meteor_Scatter_Reception_on_RTL-SDR
https://code.google.com/archive/p/cdar/wikis/SimpleMeteorDetection.wiki
-------------Meteor Scatter Softwave:-----------------------------------
gqrx:http://gqrx.dk/blog/meteor-scatter-reception-with-rtl-sdr-and-gqrx
WSJT:http://physics.princeton.edu/pulsar/k1jt/wsjt.html
MSHV:http://lz2hv.org/mshv
-------------RTL-SDR Receiver------------------------------------------
https://github.com/roger-/pyrtlsdr
https://github.com/mariocannistra/rtl-power-fftw
http://sdr.osmocom.org/trac/wiki/rtl-sdr(play in terminl)
http://kmkeen.com/rtl-demod-guide/
-------------fm trap---------------------------------------------------
http://lna4all.blogspot.com/2015/10/diy-fm-trap-or-88-108-mhz-band-stop.html
-------------RPI-------------------------------------------------------
TTL :http://kzpu.com/archives/3772.html
TTL:http://blog.sina.com.cn/s/blog_c2fa61c501019y2r.html
http://xxlinux.com/article/accidence/internet/20130104/18646.html