Download - Through Wall Radar
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Through Wall Radar
ECE 480Fall 2008 Design Day Presentation
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Overview
Introduction and Project Goals Background Design Specifications Final Product Future Work Demonstration
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Introduction and Project Goals
Introduction What is Through Wall
Radar? A radar system
designed to detect targets through large obstructions
How is it useful? Search and rescue
applications
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Introduction and Project Goals
Project Goals Design and build a core
radar Sensitive Reconfigurable Low Cost
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Background
Linear FMCW Radar Transmit frequency
sweep Target reflections cause
time delay on return signal
Delayed signals appear at radar output
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Background
Self-Interference Cancellation Co-located antennas Transmitter energy
interferes with receiver Use knowledge of
transmitted signal to remove it from the receiver
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Design Specifications
Basic Radar Performance Ability to detect
multiple targets Easily identify and
distinguish between targets
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Design Specifications
Reconfigurable Easily add expanded
capabilities High percentage of
COTS modules
Low Cost
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Final Product
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Final Product
PCNRL Provided
Laptop
Host ProcessorOnboard
CompactRIO
FPGAOnboard
CompactRIO
Dat
a F
low
Co
ntro
l Flow
Signal Processing
AI/AO
Display & Control
PCNRL Provided
Laptop
Host ProcessorOnboard
CompactRIO
FPGAOnboard
CompactRIO
Dat
a F
low
Co
ntro
l Flow
Signal Processing
AI/AO
Display & Control
Software Signal Acquisition and
Generation Background Subtraction MTI End user controls
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Final Product
Hardware Modular components
RF Component Module
Signal Processing Unit
Power Supply Unit
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Final Product
Hardware Reconfigurable
components Expansion Ports Scalable Op-Amp
Design
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Final Product
Low cost We Spent Under $1000!
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Looking Back at Project Goals
Sensitive Reconfigurable Low-Cost
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Future Work
Basic Radar Enhancements Transmit Power Background Subtraction
and MTI Improvements Video Filter SAR
Image Courtesy of NASA
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Future Work
Self-Interference Cancellation Vector Modulation
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Demonstration