1 DIGITAL NOISE RADAR WALTON & DIETER 2002 IEEE AP-S/URSI DIGITAL NOISE RADAR E. K. WALTON & D. A. DIETER The Ohio State University ElectroScience Laboratory 1320 Kinnear Road Columbus, Ohio IEEE AP-S/URSI

2 DIGITAL NOISE RADAR WALTON & DIETER 2002 IEEE AP-S/URSI ARRAY IMAGE: 2-6 GHz, 1.8 METER ARRAY CINDER BLOCK (6 M) & TREE (15 M)

3 DIGITAL NOISE RADAR WALTON & DIETER 2002 IEEE AP-S/URSI ARRAY IMAGE. 2-6 GHz, 1.8 M. SPAN, CINDER BLOCK IN FOLIAGE

4 DIGITAL NOISE RADAR WALTON & DIETER 2002 IEEE AP-S/URSI

5 ONE CHANNEL OF THE RECEIVE SYSTEM

6 DIGITAL NOISE RADAR WALTON & DIETER 2002 IEEE AP-S/URSI Schematic of the Final Design for the Receiver

7 DIGITAL NOISE RADAR WALTON & DIETER 2002 IEEE AP-S/URSI CORRELATION RECEIVERS WITH ANTENNA ARRAY HIGH SPEED DIGITAL BOARD

8 DIGITAL NOISE RADAR WALTON & DIETER 2002 IEEE AP-S/URSI BLOCK DIAGRAM FOR THE UPCONVERTER

9 DIGITAL NOISE RADAR WALTON & DIETER 2002 IEEE AP-S/URSI UP CONVERTER SYSTEM

10 DIGITAL NOISE RADAR WALTON & DIETER 2002 IEEE AP-S/URSI UP CONVERTER

11 DIGITAL NOISE RADAR WALTON & DIETER 2002 IEEE AP-S/URSI Vivaldi Tapered Slot Antenna (TSA) array. wideband response from 3 - 4GHz low-profile and low-drag form, appropriate antenna pattern, minimized cost and complexity. up to 40 elements The Vivaldi TSA fabricated from a single sheet of RF laminate E-plane beamwidth of 50° H-plane beamwidth of 35° (H.P.)

12 DIGITAL NOISE RADAR WALTON & DIETER 2002 IEEE AP-S/URSI

13 DIGITAL NOISE RADAR WALTON & DIETER 2002 IEEE AP-S/URSI E- PLANE CUTH-PLANE CUT

14 DIGITAL NOISE RADAR WALTON & DIETER 2002 IEEE AP-S/URSI SOFTWARE CONTROL PROCESS

15 DIGITAL NOISE RADAR WALTON & DIETER 2002 IEEE AP-S/URSI

16 DIGITAL NOISE RADAR WALTON & DIETER 2002 IEEE AP-S/URSI Impulse response (correlation value (v) versus time (ns)) for the pseudo-noise radar looking through a 50 foot coaxial cable

17 DIGITAL NOISE RADAR WALTON & DIETER 2002 IEEE AP-S/URSI

18 DIGITAL NOISE RADAR WALTON & DIETER 2002 IEEE AP-S/URSI

19 DIGITAL NOISE RADAR WALTON & DIETER 2002 IEEE AP-S/URSI

20 DIGITAL NOISE RADAR WALTON & DIETER 2002 IEEE AP-S/URSI

21 DIGITAL NOISE RADAR WALTON & DIETER 2002 IEEE AP-S/URSI CONCLUSIONS: A SMALL LOW POWER UWB RADAR CAN BE USED TO DETECT/IMAGE OBSTACLES IN FOLIAGE IT IS POSSIBLE TO BUILD AN 800 MHZ PSEUDORANDOM NOISE RADAR TO PERFORM THIS FUNCTION THE RESULTING RADAR CAN LOCATE MULTIPLE SCATTERERS IN FOLIAGE THE SYSTEM CAN USE LOW COST COTS DEVICES 614/