2D Direction-Of-Arrival Estimation of Gun-Fired Projectile using commercial Software-Defined-Radio

This paper describes a 2D transmitter-localizing ground station based on commercial Software-Defined Radio (SDR) boards. The system is developed within research on instrumented projectiles. The computation time of transmitter localization must be reduced for future embedding, but prohibitive errors are observed during outdoors validation measurements. Further modification of the array processing is proposed to increase the system accuracy. The system shown in measurements processes four channels and exhibits precision within a few degrees for a reduced computation time.