ultra wide band imaging applications using impulse radar (iradar) by christine paulson

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This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under contract DE-AC52-07NA27344. Lawrence Livermore National Security, LLC Ultra Wide Band Imaging Applications Using Impulse Radar (iRadar) Christine Paulson UWB Systems Engineer

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February 2012 You will hear about ultra wide band technology that can image objects buried underground and can "see" through walls.

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  • 1. This work was performed under the auspices of theU.S. Department of Energy by Lawrence LivermoreNational Laboratory under contract DE-AC52-07NA27344.Lawrence Livermore National Security, LLCChristine PaulsonUWB Systems Engineer

2. Search and Rescue Find victims trapped in collapsed structures Construction Detect electrical wires, pipes, and concealedstructures in walls, concrete and soil SWAT team Detect people and motion behind closeddoors, and determine who is armed and who isa hostage Military Detect buried mines and hidden threatsLawrence Livermore National Laboratory LLNL-PRES-5286112 DC Comics 3. UWB signal characteristics enablepenetration of most walls, concrete, and soil Detection of motion ordistinct objects as small as a fewcentimeters in sizeLawrence Livermore National Laboratory LLNL-PRES-5286113 4. Precise range resolution (~cm) Material penetration Low-power Small form factor Low-circuit complexity comparedto other radar technologies Safe for use with humans andother electronic systemsLawrence Livermore National Laboratory LLNL-PRES-5286114 Cannot see through a solid sheetof metal Not ideal for long rangeapplications (> 50 feet) 5. Very small, low power, lowcost, minimal computation Intrusion sensor, stud finder,auto backup sensor, medicaltriage sensorLawrence Livermore National Laboratory LLNL-PRES-5286115 6. Rich information content Larger size, more power,more complex, embedded oroffline computation Subsurface imaging, projectiletracking, person tracking,hostage vs. hostile, buriedlandmine detectionLawrence Livermore National Laboratory LLNL-PRES-5286116 7. Radar Camera Project 48 element array 15 25 foot range FPGA based processorLawrence Livermore National Laboratory LLNL-PRES-5286117Raw data(real time)Basicalgorithm(20 fps)Advancedalgorithm(4 fps) 8. Buried landminesLawrence Livermore National Laboratory LLNL-PRES-5286118Study of detectingwires of variousgaugesRebarSubsurface asphalt damage 9. SoilSampleLoss/ft(dB)Depth(ft)Sand 2 8Gravel 4 7Clay 10 5Top soil 16 5Dry soil 14 5Chicago 34 250/50 9 5Metal Plastic (PE)3 plastic pipe buried at 1.3 feet3 plastic pipe buried at 2.6 feetLawrence Livermore National Laboratory LLNL-PRES-528611 9 10. Breadbox sized metallicobject buried at 3, 6, and9 feet deep iRadar array mounted onvehicle platformLawrence Livermore National Laboratory LLNL-PRES-528611101.0m1.6m2.8m3 feet6 feet9 feet 11. HERMES bridge deck inspection LANDMARC landmine detection PERES high precision roadway scanning JIEDDO buried threat detection systemLawrence Livermore National Laboratory LLNL-PRES-52861111 12. iRadar integrated with Lidar, video, GPS and airborne radar Human occupancydetected usingemplaced iRadarLawrence Livermore National Laboratory LLNL-PRES-52861112 13. However, design space governed by real-worldtechnology tradeoffs Frequency selection: penetration depth vs. imaging resolution Power: range and material penetration vs. battery life Complexity: imaging capability and speed vs. computationalhorsepower iRadar capabilities continue to improve with rapidsemiconductor industry advancements Increasingly wide-bandwidth, high-sensitivity radars High-throughput embedded signal processors Continuing algorithm research and developmentLawrence Livermore National Laboratory LLNL-PRES-528611 DC Comics 14. Charity [email protected] Livermore National Laboratory LLNL-PRES-52861114