Stevens November 2010 Great Lakes

8/8/2019 Stevens November 2010 Great Lakes

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NationalNational CCenter forenter for SSecure andecure and

RResilient Maritime Commerce andesilient Maritime Commerce and

Coastal Environments (CSR)Coastal Environments (CSR)

CSR


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CODAR Network Glider FleetL-Band & X-Band Satellite

Receivers

3-D Nowcasts

& Forecasts

Rutgers University - Coastal Ocean Observation Lab

Operations, Data Fusion & Training Center


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International Constellation of Satellites Since 1992X-Band

(installed 2003)

L-Band

(installed 1992)

IRS-P4

OCM Chlorophyll

India

FY1-D

ch7:ch9

China

Global

Regional

Local

MODISUnited States


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Autonomous Underwater Gliders

Since 1999


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A)CODAR

HF Radar

Network

1998-

2009

B)

D) E)

F)

C)

G) H) I) J)


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monopole (A3)

radial whips

loop box

(A1 & A2)

Computer and Monitor Transmitter

Receiver

What does an HF RADAR consist of?

loop 1 (A1)loop 2 (A2)

receive antenna

loop box

Transmit Antenna

Receive Antenna

electronics


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Compact CODAR

HF Radars

Receive Antenna

Transmit

Antenna

25 MHz and 13 MHz

5 MHz


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Shed for Equipment


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New

Jersey

Long Island

Nested Ranges & Resolutions


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30 Co-PIs, 20 Institutions,

10 States

Regional Priorities:1) Safety at Sea

Search and Rescue

2) Ecosystem Decision

Support Fisheries

3) Water Quality4) Coastal Inundation

5) Offshore Energy

MARCOOSThe Mid-Atlantic RegionalCoastal Ocean Observing

System

NWS WFOs

Std Radar Sites

Mesonet Stations

LR HF Radar Sites

Glider AUV Tracks

USCG SLDMB Tracks

NDBC Offshore Platforms

CODAR Daily Average

Currents

Cape Cod to

Cape Hatteras:

~1000 kmCoastline


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Success Stories Making a Difference

Optimizing HF Radar for SAR using USCG Surface Drifters

Art Allen

U.S. Coast Guard

Scott Glenn

Rutgers University

and the Mid-Atlantic Regional

Coastal Ocean Observing System


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20002000

20062006

2006200620092009

20032003

20032003

2001200120032003

20032003

20032003

2001200120072007

20012001

LONG

RANGE

NETWORK


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C:\Documents and Settings\hroarty\My Documents\COOL\01 CODAR\MARCOOS\Renewal


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Nested

Standard

Range

Network


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15

Surface Currents and

Temperature

15


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ApplicationsSearch & Rescue


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Nearest Coastal Site

CODAR Currents

SLDMB Drifter

Long Island Sound (2002)

New Jersey Shelf (2004)

Comparison of Actual Drifter Tracks with CODAR Data


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HYCOM

Low Confidence

HF Radar

High Confidence

24 Hours IntoS

earch


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HYCOM

Low Confidence

HF Radar

High Confidence

48 Hours IntoS

earch


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HYCOM

36,000 km2

10,500 nmi2

HF Radar

12,000 km2

3,500 nmi2

232 km

154 km

123 km

100 km

Search Area After 96 Hours


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NOAA Press Release

Tokyo Bay


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29 Participating Organizations

129 Radar Locations

National Network


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National IOOS HF RadarSteering

Team Inagural Meeting July 28, 2010

HF Radar applications for fresh water one offour Tiger Teams Previous literature Fernandez et al (2000) in

Lake Michigan and Lake Tahoe, Veseckey and

Meadows in Lake Michigan, Babkov et al(2009) in the Baltic Sea

when sufficiently strong surface winds (2 about7 m/s) exist for an hour or more, a single HF

radar can be effective in measuring the radial

component of surface currents out to ranges of

10-15 km

Jack Harlan would be contacting Jen Read,

Executive Director of GLOS for members


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ApplicationsDetection of Vessels


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Oleander track

Loveladies 5 MHz

Tuckerton 5 MHz

BrantBeach25MHz

Ship Detection

2001-2006


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Doppler Spectra from all Range Cells

with Detection Threshold Applied

Doppler Frequency

Bragg Waves Bragg Waves

Fixed Objects & Direct Signals

Vessel Vessel


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S S


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Transmit

Antenna

Receive

Antenna

Enclosure MacComputer

13 MHz SeaSonde

at Sea Bright, NJ


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AIS Data

CODAR Data

13 MHz CODAR

Surface Current Coverage

Average Range 70 km

New York Harbor

13 MHz CODAR Testbed


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Mol Efficiency

Joel Mare

Pilot

Maas Trader

Dolphin

13 MHz Test CaseFebruary 26, 2009 0000 to 0100 GMT

Ship Trails from AIS data


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Five Vessels of Interest February 26 2009


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IIR Method FFT 256 Threshold 10

dB

Median Method FFT 256 Threshold 11 dB

Distance

(km)

Radial

Velocity

(m/s)

Bearing

(rCWN)

Best Detection Method IIR and Median


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Using GPS Track to Perform Association

IIR Method FFT 256 Threshold 10 dB


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Comparison of Median and IIR method


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etection of Tugboat Dolphin

atS

ea Bright CodarS

ite


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Median Method FFT 256 Threshold 11 dBIIR Method FFT 256 Threshold 10

dB

Distance

(km)

Radial

Velocity

(m/s)

Bearing

(rCWN)

DOLPHIN


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MAAS TRADER

DOLPHIN


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November 9-10, 2009

Exercise


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AIS DATA


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GPS Track YM Los Angeles


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Track of YM Los Angeles


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13 MHz SeaSonde


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Median Method

8 dB 9 dB 10 dB 11 dB 12 dB 13 dB

32 FFT 11.8

64 FFT 22.4

128

FFT50.7 49.0 46.7 46.3 29.5 37.5

256

FFT44.3

512

FFT 29.9

13 MHz SeaSonde

Detection Rate

Ph 1 St d L R S S d HF R d P f


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Investigators: CODAR,Rutgers, CodarNor

Objective: Performanceassessment vs. radar andenvironmental factors

Coverage region forcurrent mapping fromproposed Long-RangeSeaSonde Sites

Russian BorderKJLNES

VARD

Phase 1 Study -- Long-Range SeaSonde HF Radar Performance

nearNordkap forNavy/NOBLE Program

Ship Surveillance and Environmental Monitoring


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Littoral Expeditionary Autonomous PowerBuoy

(LEAP)


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RiverSonde vs SeaSonde:


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RiverSonde vs. SeaSonde:

UHF frequency (420-450 MHz) vs. HF/VHF (5-50 MHz)

shorter distance: ~300 m vs. 20-200 kmfiner range resolution: 5-15 m vs. 200 m-6 kmFaster data updates: 5 min. vs. 30 min.-1 hour

Both technologies based on same basic Dopplerprincipal. Doppler shift gives total radial velocity,water phase velocity known from water wavelength

RiverSonde UHF radar: ~420-450 MHz (1-m or0.7-m radar wavelength). Bragg scatter from 0.5-mor 0.35-m wavelength water waves

Ri S d H d


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RiverSonde Hardware

RiverSonde Antenna System


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RiverSonde Antenna SystemCenter array used for Tx & RxSide arrays used for Rx only


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Typical RiverSonde Geometry


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Boat tracks that were taken

Track results of the RIVERsonde

Boat Trip Results


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Boat path

Dimensions

Height to top of antenna : 24Length : 40Beam : 15

First TestSecond test


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Dimensions

Height to top of antenna : 24Length : 40Beam : 15

First TestSecond test Boat path

A k f b li l k


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Atrack from a boat traveling along track one.

B D i P i i R di l V l i k


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Boat Detection , Positive Radial Velocity on track 2.

R di l l it t k


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Radial velocity on track 4


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yWe were able to detect the boat when it wasdirected towards us. At 4 and 7 knots

y

We were able to detect the boat when it wasdirected away from us. At 4 and 7 Knots

yThe test was very successful and useful for

preparation for week 6.

Conclusion

Stevens November 2010 Great Lakes

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Transcript of Stevens November 2010 Great Lakes