SAR Measurements of Wind Field, Sea State Topography at Offshore Platforms

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SAR Measurements of Wind Field, Sea State Topography

at Offshore Platforms

Susanne Lehner

DLR, Oberpfaffenhofen

Susanne.Lehner@dlr.de

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Institut für Methodik der Fernerkundung bzw. Deutsches Fernerkundungsdatenzentrum

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Remote Sensing Technology Institute

Planned NRT Products

ENVISAT

Wind

Sea State

OIl

(3)

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TS-X Modes

TSX images

Scan SAR, stripmap, spotlight

Terceira

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ERS-2 and TS-X NRT Scenario

Neustrelitz

Ground Station

acquire downlink

and archiving

Gbit-DAS

Processing

System

PGS

ftp – archiving of FRED

signal data to the

processing system

L1b product ftp delivery

frames on

downlink

1

2

n

. . .

1

2

n

. . .

ship-detection

Processing

AIS matching

n

..

3

2

1

real time,

archiving starts

10 sec delayed

15 sec per frame

format conversion

70 sec per frame

processing 200

sec per frame



20 sec per

frame

150 sec per

frame

user notification

e-mail

user order

AIS data base

20 sec per frame

AIS user data

ftp delivery on

user account

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SAINT Algorithm

Panama Canal,

Atlantic Side

Colon

TS-X Stripmap

Panama Canal

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Vortrag > Autor > Dokumentname > Datum

100% transparency

50% transparency

25% transparency

0% transparency

Full Resolution Subscen

Google Earth and

TerraSAR-X

image overlay

Hamburg Harbour,

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Detected Ships – Yellow dots

40 ships were located using the

TerraSAR-X radar data

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TerraSAR-X

ship detection

oil spill

ship classification

& identification

WorldView 1

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Montara Oil Spill, 2009

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Louisiana spill event

April 25, 2010

Oil spill contour (red line)

April 25, 2010

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MARISS - ESA

DOLPHIN – EU

Join SLA?

Abduction of

Sirius Star

By pirates

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Ship Traffic Monitoring using Satellite AIS

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WaMoS marine radar on oil platform Ekofisk 2/4 k

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TS-X Spotlight of Ekofisk Oil platform

10 km

1.5km

TSX Spotlight mode

VV polarization image

acquired on May 15, 2009

at 17:19 UTC over Ekofisk

oil platform

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1

Spectral Comparison WAMOS – TS-X

Heave spectrum (RED:TSX BLUE:WAMOS)

0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 0.00 0.05 0.10 0.15 0.20 0.25 0.30 frequencyt (Hz) S( *)

Wamos

TSX

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Hs(m)

Tp(s)

Dir(

°

)

TSX

3.8

8.4

280

WaMoS

3.6

8.3

294

buoy

3.7

8.7

Heave spectrum (

RED:TSX

BLUE:WAMOS

)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

0.00

0.05

0.10

0.15

0.20

0.25

0.30

frequencyt (Hz)

S(

*)

Heave spectrum (

RED:TSX

BLUE:WAMOS

)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

30.00

90.00

150.00

210.00

270.00

330.00

390.00

wavelenght (m)

S(

*)

•

One-dimensional spectra comparison

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1 km

Case 1: April 30, 2009

~10 Km

~

10 Km

TSX SpotLight (1.8x1.8 m resolution)

VV-pol image acquired on Apr., 30,

2009

N

Dark

area 1

Dark

area 2

10/16

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Instantaneous wind field obtained using

XMOD geophysical model function

Wind condition DWD

5.9 m/s

155°

N

Wind

shadow

Oil

spill

11/16

30 April, 2010

05:37UTC

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slick

a

b

wind history

t

2

t

1

t

₀

UTC

N

Oil

Spil

l

06

03

00

21

29.04

06

03

N

cost.

N

18

2nd acquisition

00

21

28.04

1st acquisition

t

2

8.6

8.3

7.5

4.7

3.7

2.7

4.5

5.1

5.9

t

₀

U10

Udir

Age: 35h +/-3h

Date: 28 April, 2009

Date: 30 April, 2009

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Ocean Wave Power Plant

TSX spotlight mode (10 x 10 km

)

27 March 2010 19:41 UTC time

Ocean Wave plant

built in the 80

´

s...

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Sea state variablity on Azores

1

1.5 km

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Wavelength field

Determination of

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No

data

Fusion of optical and SAR Data

Sonar Scan

Error

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Conclusions and Outlook



New High Resolution TS-X Data



From ESA Sentinel 1 Data available from 2013



Monitoring of Harbours and Shipping Lanes



Oil Spill Monitoring



High Resolution Wind speed and Sea State Monitoring

at Offshore Platforms and along Shipping Lanes



Let me know your favourite Platform in Storm and Ice

One snapshot is considered free Science

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INU TDX1 2298 IMAGING

PREOPERATIONS from 2010-08-

19T130335

Times:13:03:36.52011-13:04:13.03502

Orbit:C106-98 (903)

Mode:SM Polarisation:S (HH)

ncidence Angle:35.841 ..38.725

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INU TDX1 2298 IMAGING PREOPERATIONS from 2010-08-