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8/12/2019 Antenna Design for the Detection of Alive Buried Victims Under Thick Layers of Rubble
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CST User Group Meeting 2010
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Antenna design for the
detection of alive buried
victims under thick layers ofrubble.
JM FLOC’H
JM DENOUAL
8/12/2019 Antenna Design for the Detection of Alive Buried Victims Under Thick Layers of Rubble
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Outline
• The project
• The partnerships
• Goals• CST simulation
• Measurements
• First results
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VIPERE Project(Vision des PERsonnes Ensevelies)
• Project financed by ANR beginning in 2007, endin august 2010
• Goals : Detection of buried persons with RADAR
techniques
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parternship
• CEA for antenna test
• CISTEM / XLIM for radioelectric
experimental and simulation data
• ETSA for Electronics
• IETR for antenna design
• MARTEC for leadership, integration andtreatments
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Goals (1)
- Propagation in inhomogeneous structure
High attenuation
Multiple traject, diffraction
- Detection of people with very low mobility
- Doppler treatement
- Imaging in 3D
- Light and compact system
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Goals (2)
• Radar scope 2 to 30 m
• Distance resolution 15 to 50 cm
• Maximum sensibility -150 to -165 dBm
• Respiration amplitude few mm to 2 cm• Respiration frequency 0.1 to 0.5 Hz
• Radar UWB CW with phase coding
•Frequency repetition 100 Hz
• Code length 2*23
• Treatement gain 69 dB
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Radar schematic
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VIPERE Antenna (2)
• Symetric structure (2 flares)
• Damping resistance at the endof the flares
• Shape optimization
•Direct interface with emission andtransmission modules
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CST Simulation
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Antenna prototype
Size : 35 x 23 x 15 cm Weight : 1.1 Kg
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CEA Measurement System
Reference Antennawith H and V polarisation
VIPERE
Antenna
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Reflection coefficient
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Radiation pattern(measurement and simulation in H and V polarisation)
300 MHz
2 GHz
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Antenna Gain
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Polarization decoupling
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Impulse response (1)(simulation and measurement in azimut and elevation)
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Impulse response (2)
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Impulse response (3)
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Impulse response (4)Elevation
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Impulse response (4)Elevation
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Antenna Coupling Simulation (1)
Distance center to center
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Antenna Coupling Simulation (2)
Distance center to center
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Antenna Coupling Simulation (3)
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8/12/2019 Antenna Design for the Detection of Alive Buried Victims Under Thick Layers of Rubble
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Antenna Coupling Measurements (2)
Horizontal
Vertical
Distance :
15 cm
30 cm
45 cm
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Radar Prototype
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Measurement exempleRespiration measured spectra
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Thank you for your attention
