Through Wall Radar

1. Through Wall Radar ECE 480 Fall 2008 Design Day Presentation

2. Overview • Introduction and Project Goals • Background • Design Specifications • Final Product • Future Work • Demonstration

3. 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

4. Introduction and Project Goals • Project Goals • Design and build a core radar • Sensitive • Reconfigurable • Low Cost

5. Background • Linear FMCW Radar • Transmit frequency sweep • Target reflections cause time delay on return signal • Delayed signals appear at radar output

6. Background • Self-Interference Cancellation • Co-located antennas • Transmitter energy interferes with receiver • Use knowledge of transmitted signal to remove it from the receiver

7. Design Specifications • Basic Radar Performance • Ability to detect multiple targets • Easily identify and distinguish between targets

8. Design Specifications • Reconfigurable • Easily add expanded capabilities • High percentage of COTS modules • Low Cost

9. Final Product

10. Final Product • Software • Signal Acquisition and Generation • Background Subtraction • MTI • End user controls

11. Final Product • Hardware • Modular components • RF Component Module • Signal Processing Unit • Power Supply Unit

12. Final Product • Hardware • Reconfigurable components • Expansion Ports • Scalable Op-Amp Design

13. Final Product • Low cost • We Spent Under $1000!

14. Looking Back at Project Goals • Sensitive • Reconfigurable • Low-Cost

15. Future Work • Basic Radar Enhancements • Transmit Power • Background Subtraction and MTI Improvements • Video Filter • SAR Image Courtesy of NASA

16. Future Work • Self-Interference Cancellation • Vector Modulation

17. Demonstration