SDRについて、ここに記述してください。

https://en.wikipedia.org/wiki/Software-defined_radio

Software-defined radio

USRP X310 https://www.ettus.com/all-products/x310-kit/

The Ettus Research USRP X310 is a high-performance, scalable software defined radio (SDR) platform for designing and deploying next generation wireless communications systems.

http://www.ni.com/en-us/innovations/case-studies/19/skysafe-defeats-commercial-drone-threats-with-open-source-sdr.html?cid=Twitter-127904-Japan-Paid_Broadbased

SkySafe Defeats Commercial Drone Threats with Open-Source SDR