Here is some slides from Defcon 23 : https://media.defcon.org/DEF%20CON%2023/DEF%20CON%2023%20presentations/DEFCON-23-Lin-Huang-Qing-Yang-GPS-Spoofing.pdf https

Here is some slides from Defcon 23 : https://media.defcon.org/DEF%20CON%2023/DEF%20CON%2023%20presentations/DEFCON-23-Lin-Huang-Qing-Yang-GPS-Spoofing.pdf https://media.defcon.org/DEF%20CON%2023/DEF%20CON%2023%20pre... They did a record, replay with a USRP B210 and GPS antenna. And here is a project that generates GPS baseband signal data streams for bladeRF, HackRF, and USRP. https://github.com/osqzss/gps-sdr-sim https://github.com/osqzss/gps-sdr-sim