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