GPU processors for space surveillance and airborne radars. Towards highly efficient ARM-GPU architecture for embedded radar systems. Degurse J-F.1,2, Dugrosprez B.1, Savy L.1, Marcos S.2, Molinié J-Ph.1 1ONERA,

Electromagnetism and Radar Dept., Palaiseau, France 2L2S (CNRS-Univ.ParisSud-Supéléc), Gif-sur-Yvette, France

Space surveillance radar A space surveillance radar has been developed by ONERA to detect orbiting satellites. The receiving site has more than one hundred antennas. Signal processing, including Hilbert transform, digital beam forming, Doppler compensation and FFT, currently requires 120 PowerPC G4 processors.

Objective: reduce computing system costs and maintenance Stage

CPU CPU x86 AMD GPU NVIDIA PowerPC G4 Opteron 6140 Tesla C2075 (1/28/91PPC) 2,6 GHz – 8 cores 698 ms 170 ms 34 ms 153 ms 128 ms 21 ms 671 ms 2428 ms 250 ms

Hilbert transform Beamforming FFT+Accel.comp.

Conclusion: On GPU each stage runs much faster than real-time (