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Hugh Roarty, Michael Smith, Ethan Handel and Scott Glenn

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Presentation on theme: "Hugh Roarty, Michael Smith, Ethan Handel and Scott Glenn"— Presentation transcript:

1 Hugh Roarty, Michael Smith, Ethan Handel and Scott Glenn
Expanding the Coverage of HF Radar Through the Use of Wave Powered Buoys Hugh Roarty, Michael Smith, Ethan Handel and Scott Glenn Don Barrick

2 Rutgers University - Coastal Ocean Observation Lab
Operations, Research & Education Center Vessels - Satellite Satellite CODAR Ships/ Vessels Glider REMUS Data Vis. Modeling Security Leadership Education Satellite Data Acquisition Stations CODAR Network Glider Fleet 3-D Forecasts

3 CODAR Compact HF Radar Antennas
25 MHz 13 MHz 5 MHz Combined Transmitter & Receiver Separate Transmitter & Receiver

4 Shed and Enclosures monitor computer & external hard drive A.C. unit
UPS system transmitter receiver Two lines of Communication Shed Enclosure Lightning Protection

5 Surface Current Mapping Capability
25 MHz Radar l: 12 m Ocean l: 6 m Range: 30 km Resolution: 1 km 13 MHz Radar l: 23 m Ocean l: 12 m Range: 80 km Resolution: 3 km 05 MHz Radar l: 60m Ocean l: 30 m Range: 180 km Resolution: 6 km

6 133 Sites in the USA

7 This Mornings Coverage
150 km 100 km

8 261 Stations Globally 261 Stations in 21 Countries

9 Enhancing the Network with Bistatics

10 Littoral Expeditionary Autonomous PowerBuoy (LEAP)
Monostatic Geometry at 13 MHz SNR 17 dB Bistatic Geometry at 13 MHz SNR 32 dB

11 Enhancing the Network with Bistatics
4 radars can provide 9 measurements

12 Wave Powered Buoy HF Transmitter Inside Buoy Buoy provided: 300 watts
HF Radar Antenna Float Spar HF Transmitter Inside Buoy Heave Plate Buoy provided: 300 watts Tx consumed: 100 watts

13 Deployment USCGC Juniper

14

15 Wave Environment During Deployment

16 Coverage Improvements

17 Plot of One Radial File

18

19 Plot of One Elliptical File

20

21

22

23

24 Three Radial Site Coverage

25 Three Radial Site Coverage with
Three Signals From Bistatic Transmitter

26 Conclusions Bistatics increase coverage and look angles
Bistatics can make the National HF Radar Network more robust Wave powered buoy is a robust and stable platform for at sea bistatic transmitter

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