Radar and ECM basics

Oldie but goldie.


Phased array stuff (HAARP, Over-the-horizon radars)


DIY

Passive RADAR With a Dual Coherent Channel RTL-SDR
Read more: http://www.rtl-sdr.com/passive-radar-dual-coherent-channel-rtl-sdr/



Links:
Radar Tutorial
Introduction to Radar Systems

The Opposite of Air Power