Feature Articles Yoshio Yamaguchi 2 SAWS 2001 Summer
SAWS 2001 Summer 3
ε = ε j ε ε ε 4 SAWS 2001 Summer
ρ s ρ s m v SAWS 2001 Summer 5
Feature Articles Yoshio Yamaguchi 2 SAWS 2001 Autumn
f t f f f f f t f f t f f f 2 ε t f f f f 1 t (a) (b) ε f SAW tooth wave generator sweep oscillator directional coupler clock mixer transmitting antenna f personal computer A/D converter amp. high pass filter receiving antenna low pass filter limiter SAWS 2001 Autumn 3
V Tr. Rec. z H Scanning direction Snow Target1 Imaging plane 4 SAWS 2001 Autumn
SAWS 2001 Autumn 5
Feature Articles Yoshio Yamaguchi ϕ 2 SAWS 2002 Winter
E t [s] φ φ E s reflector (10 10 cm 2, 90º) reflector (6 6 cm 2, 45º) plate (4.5 20 cm 2 ) reflector (4 4 cm 2, 0º) reflector (8 8 cm 2, 0º) line target (90º) plate (10 17 cm 2 ) reflector (6 6 cm 2, 45º) plate (4.5 20 cm 2 ) reflector (4 4 cm 2, 0º) reflector (8 8 cm 2, 0º) V H SAWS 2002 Winter 3
Tx E t target Co-Pol P c Rx h = E t? X-Pol P x V = h T [S] E t h = E t [s] 0 1.5cm 94.5cm 1.5cm X-direction 94.5cm Y-direction 70cm 0.6 cm φ 50 cm 30º target.1 60º target.2 4 SAWS 2002 Winter
φ SAWS 2002 Winter 5
Fully Polarimetric SAR Image Two Targets A B A B [s] maximizing A minimizing B A B A B Range direction (cm) Tr. Rec. 0 2cm 126 air 30cm 50cm sand Antenna V H polarization metallic plate Scanning direction Tr. Rec. 0 2cm 126 Range direction (cm) air sand 30cm 80cm Antenna V H polarization metallic pipe 135º Scanning direction 6 SAWS 2002 Winter
SAWS 2002 Winter 7