through wall radar ece 480 fall 2008 design day presentation
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Through Wall Radar
ECE 480Fall 2008 Design Day Presentation
Overview
Introduction and Project Goals Background Design Specifications Final Product Future Work Demonstration
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
Introduction and Project Goals
Project Goals Design and build a core
radar Sensitive Reconfigurable Low Cost
Background
Linear FMCW Radar Transmit frequency
sweep Target reflections cause
time delay on return signal
Delayed signals appear at radar output
Background
Self-Interference Cancellation Co-located antennas Transmitter energy
interferes with receiver Use knowledge of
transmitted signal to remove it from the receiver
Design Specifications
Basic Radar Performance Ability to detect
multiple targets Easily identify and
distinguish between targets
Design Specifications
Reconfigurable Easily add expanded
capabilities High percentage of
COTS modules
Low Cost
Final Product
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
Final Product
Hardware Modular components
RF Component Module
Signal Processing Unit
Power Supply Unit
Final Product
Hardware Reconfigurable
components Expansion Ports Scalable Op-Amp
Design
Final Product
Low cost We Spent Under $1000!
Looking Back at Project Goals
Sensitive Reconfigurable Low-Cost
Future Work
Basic Radar Enhancements Transmit Power Background Subtraction
and MTI Improvements Video Filter SAR
Image Courtesy of NASA
Future Work
Self-Interference Cancellation Vector Modulation
Demonstration