3-D Unitary ESPRIT 2
BS(Rx) 120 MS(Tx)
A/D ( ) ( ) 2 2 λ/ 3 λ 5.85[GHz] 20 500[kHz] 9.5[MHz] 12bit 20Ms/s 60[deg] 100[ns]
Rb atomic osc. 10MHz IF Local 880MHz RF Local 4970MHz 2 way Power Splitter RF 5850MHz RF 5850MHz (+ f d Hz) 1 ch I/Q Modulator BPF f 2 ch I/Q Arbitrary Waveform Modulator Generator BPF IF Local 880MHz(+ Hz) f d
3D Unitary ESPRIT 2 4 ele4 ele3 ele2 ele1 λ ele8 ele7 ele6 ele5 λ/ 3
RF Local 5845MHz Rb atomic osc. 10MHz Clock 40MHz Power Splitter Trigger 250kHz PC DMA A/D Conv. LNA LNA PRE AMP PRE AMP LPF LPF IF AMP IF AMP LPF LPF LNA LNA PRE AMP PRE AMP LPF IF AMP LPF IF AMP fcut=1.2ghz LPF LPF fcut=10.7mhz fif=5mhz
1 Esrimated AoA [deg] 60 50 40 30 20 10 0-10 -20-30 -30-20 -10 Rotator Angle [deg] 4m 20 15 10 5 0-30 -20-10 Rotator Angle [deg] 60
2 f d 1[Hz] 50 (4m) PC A D C Receiver 4 way Power Splitter ATT Power Combiner Transmitter
SNR 30dB Delay Difference : 0[ns] Delay Difference : 5.26[ns] Delay Difference : 10.53[ns]
Delay Difference : 15.79[ns] Delay Difference : 21.05[ns] Delay Difference : 26.32[ns] Delay Difference : 31.58[ns]
[ 0.15] Delay Difference : 0[ns] SNR 30dB Delay Difference : 5.26[ns] Delay Difference : 10.53[ns]
Delay Difference : 15.79[ns] Delay Difference : 21.05[ns] Delay Difference : 26.32[ns] Delay Difference : 31.58[ns]
SNR 30dB 35 35 Delay Difference [ns] 30 25 20 15 10 5 mesurement Delay Difference [ns] 30 25 20 15 10 5 mesurement 0 0 5 10 15 20 25 30 35 40 45 50 2 0 0 5 10 15 20 25 30 35 40 45 50 2
2 4m
40 30 20 10 0-10 -20-30 Azimuth Angle Difference : 20[deg] Estimated AoA [deg] 40 30 20 10 0-10 -20-30 Estimated AoA [deg] Azimuth Angle Difference : 25[deg] 40 30 20 10 0-10 -20-30 Estimated AoA [deg] Azimuth Angle Difference : 30[deg]
[ 0.15] 30 20 10 0-10 -20-30 Estimated AoA [deg] Azimuth Angle Difference : 8[deg] 30 20 10 0-10 -20-30 Estimated AoA [deg] Azimuth Angle Difference : 10[deg] 30 20 10 0-10 -20-30 Estimated AoA [deg] Azimuth Angle Difference : 12[deg]
30 20 10 0-10 -20-30 30 20 10 0-10 -20-30 Estimated AoA [deg] Estimated AoA [deg] Azimuth Angle Difference : 15[deg] Azimuth Angle Difference : 20[deg]
Azimuth Angle Difference [deg] 35 mesurement 30 25 20 15 40 30 20 10 0-10 Estimated AoA [deg] -20-30 Azimuth Angle Difference [deg] 25 mesurement 20 15 10 5 30 20 10 0-10 Estimated AoA [deg] -20-30 2 2
IF 2 2
{ 60[deg] 105.26[ns] Angle Difference 3-D Unitary ESPRIT Delay Difference 1