A Procedure to Edit Deep-Towed Navigation Data · 2011. 5. 13. · Approved for public release;...

37
Approved for public release; distribution is unlimited. Naval Research Laboratory Stennis Space Center, MS 39529-5004 February 28, 2003 NRL/MR-MM/7430--03-8294 A Procedure to Edit Deep-Towed Navigation Data Seafloor Sciences Branch Marine Geosciences Division CHARLES MEGNIN WARREN T. WOOD DENNIS A. LINDWALL JOSEPH F. GETTRUST ´

Transcript of A Procedure to Edit Deep-Towed Navigation Data · 2011. 5. 13. · Approved for public release;...

Page 1: A Procedure to Edit Deep-Towed Navigation Data · 2011. 5. 13. · Approved for public release; distribution is unlimited. Naval Research Laboratory Stennis Space Center, MS 39529-5004

Approved for public release; distribution is unlimited.

Naval Research LaboratoryStennis Space Center, MS 39529-5004

February 28, 2003

NRL/MR-MM/7430--03-8294

A Procedure to Edit Deep-TowedNavigation Data

Seafloor Sciences BranchMarine Geosciences Division

CHARLES MEGNIN

WARREN T. WOOD

DENNIS A. LINDWALL

JOSEPH F. GETTRUST

´

Page 2: A Procedure to Edit Deep-Towed Navigation Data · 2011. 5. 13. · Approved for public release; distribution is unlimited. Naval Research Laboratory Stennis Space Center, MS 39529-5004

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February 28, 2003

A Procedure to Edit Deep-Towed Navigation Data

Naval Research LaboratoryMarine Geosciences DivisionStennis Space Center, MS 39529-5004

74-7814-03

Approved for public release; distribution is unlimited.

While data acquired from deep-towed seismic surveys offer the potential of greatly increased image resolution over the surface-towed approach,accurate positioning constitutes an important challenge which, if not performed accurately, could offset the benefits gained by the proximitybetween the source and the ocean bottom. We present here a new procedure that optimally determines relay and receiver positions at all times,using the Long Baseline acoustic navigation system. Navigation and seismic data were acquired during the October 2002 Cascadia Margin cruise.

Unclassified Unclassified UnclassifiedUL 37

Joseph Gettrust

(228) 688-5475

DTAGS; Deep Towed Acoustics/Geophysics System, Velocity images; Seismic reflection

Memorandum Report

0601153N

ONROffice of Naval Research800 North Quincy StreetArlington, VA 22217-5000

NRL/MR-MM/7430--03-8294

October 1, 2002-January 8, 2003

74-7814-00

Charles Megnin, Warren T. Wood, Dennis A. Lindwall, and Joseph F. Gettrust´

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Page 6: A Procedure to Edit Deep-Towed Navigation Data · 2011. 5. 13. · Approved for public release; distribution is unlimited. Naval Research Laboratory Stennis Space Center, MS 39529-5004

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Page 7: A Procedure to Edit Deep-Towed Navigation Data · 2011. 5. 13. · Approved for public release; distribution is unlimited. Naval Research Laboratory Stennis Space Center, MS 39529-5004

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Page 8: A Procedure to Edit Deep-Towed Navigation Data · 2011. 5. 13. · Approved for public release; distribution is unlimited. Naval Research Laboratory Stennis Space Center, MS 39529-5004

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Page 31: A Procedure to Edit Deep-Towed Navigation Data · 2011. 5. 13. · Approved for public release; distribution is unlimited. Naval Research Laboratory Stennis Space Center, MS 39529-5004

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Page 32: A Procedure to Edit Deep-Towed Navigation Data · 2011. 5. 13. · Approved for public release; distribution is unlimited. Naval Research Laboratory Stennis Space Center, MS 39529-5004

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Page 33: A Procedure to Edit Deep-Towed Navigation Data · 2011. 5. 13. · Approved for public release; distribution is unlimited. Naval Research Laboratory Stennis Space Center, MS 39529-5004

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Page 34: A Procedure to Edit Deep-Towed Navigation Data · 2011. 5. 13. · Approved for public release; distribution is unlimited. Naval Research Laboratory Stennis Space Center, MS 39529-5004

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Page 35: A Procedure to Edit Deep-Towed Navigation Data · 2011. 5. 13. · Approved for public release; distribution is unlimited. Naval Research Laboratory Stennis Space Center, MS 39529-5004

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0 106 212 318 424 530 636 742 848 954 1060Fix #

Jumps

 �XZw`¤FUWP ¥*% � b�[�YFw`P XZY�RTbcP U]P1g_[k� ��g�[vRTXZR]¤FuFP � �FgZ¤FP>��[\YFu¨g_^`Ycw`XZR]¤FuFP��$U]P�uu�9��a$^�U�RTbFPi�^`¤FU]�WP X_Y  �X_w`¤cU]P �6J�� � bFX_��dFw`¤FU]P X_��V7[�uFP|��XZR]bKRTbFP { �� �Wi1U]XZscR�� � ��� ��� � ����� ��� �}�I sFs�P�YFuFX f � Jp�6Jp�Z� J

�cL

Page 36: A Procedure to Edit Deep-Towed Navigation Data · 2011. 5. 13. · Approved for public release; distribution is unlimited. Naval Research Laboratory Stennis Space Center, MS 39529-5004

232˚

232˚

234˚

234˚

236˚

236˚

48˚ 48˚

49˚ 49˚

50˚ 50˚

51˚ 51˚

233˚ 06'

233˚ 06'

233˚ 09'

233˚ 09'

233˚ 12'

233˚ 12'

48˚ 39' 48˚ 39'

0 1 2

km

188

238

288

338

388

438

488

538588

638688

738788

838888

9389881038

ship trace

relay trace

transponders

Line # 5

 �XZw`¤FUWP ¦ % � ^`U]UWP1i�R]P1u �WbFX_s �$U]P�uEg_XZYFP>�e[�YFuEUWP1g_[�� �$w`U]P�P1YEgZX_YFPJ�s%^`�WXZRTXZ^`YF��JA� � bFX_�d�w�¤FU]PeX_� V7[�uFPQ��XMRTb�RTbcPK{����]i1UWX_scR � � ��� � ���*��� ��� ��� �}��I�sFs%P1YcuFXMf � J��cJMLX�SJ

�/o

Page 37: A Procedure to Edit Deep-Towed Navigation Data · 2011. 5. 13. · Approved for public release; distribution is unlimited. Naval Research Laboratory Stennis Space Center, MS 39529-5004

0.50.60.70.80.91.01.11.21.31.41.5

dist

ance

(km

)

0.50.60.70.80.91.01.11.21.31.41.5

dist

ance

(km

)

225 300 375 450 525 600 675 750 825 900 975 1050fix #

100120140160180200220240260

azim

uth

(deg

rees

)

100120140160180200220240260

azim

uth

(deg

rees

)

225 300 375 450 525 600 675 750 825 900 975 1050fix #

0

0.2

0.4

0.6

0.8

1

1.2

1.4

188

579

Ship/fish distance and azimuth (line # 5)

 �XZw`¤FUWPn*% NQXZ�WR�[\YFi1P���[��1XZV ¤cR]bsFg_^\R a$^`U R]bFPP1ucXZRTP�uhu�[\R�[6J � bFPeU]P�u gZX_YFP X_� ucP1U]XM�`P�ua$UW^`V RTbFPu�[vR�[KgZ^`w [�YFuR]bFP �FgZ¤FPQgZX_YFP i1^`UWU]P1�Ws�^�YFuF� RT^ R]bFPQs%^`�]XMRTXZ^`YF� XZY� �XZw`¤FU]P�¦cJ� � bFX_� d�w�¤FU]PeX_��V7[�uFPQ��XMRTb�RTbFPl{�� �Wi1UWX_scR � � ��� &�� ��� "('(� ��� �}�FI�scs�P�YFuFXMf � Jp�cJpof� JJ

�`�