Text files of the Real-time Kinematic (RTK) navigation logged with HYPACK Software during USGS Cruise 07011 conducted off the southern shore of Martha's Vineyard, 2007

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: U.S. Geological Survey
Publication_Date: 2009
Title:
Text files of the Real-time Kinematic (RTK) navigation logged with HYPACK Software during USGS Cruise 07011 conducted off the southern shore of Martha's Vineyard, 2007
Edition: 1.0
Geospatial_Data_Presentation_Form: online
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2008-1288
Publication_Information:
Publication_Place: Woods Hole Coastal and Marine Science Center, Woods Hole, MA
Publisher: U.S. Geological Survey, Coastal and Marine Geology Program
Online_Linkage: https://doi.org/10.3133/ofr20081288
Online_Linkage: https://pubs.usgs.gov/of/2008/1288/html/gis.html
Online_Linkage: https://pubs.usgs.gov/of/2008/1288/GIS_catalog/Nav/hypack.zip
Larger_Work_Citation:
Citation_Information:
Originator: Denny, J.F.
Originator: Danforth, W.W.
Originator: Foster, D.S.
Originator: Sherwood, C.R.
Publication_Date: 2009
Title:
Geophysical Data Collected off the South Shore of Martha's Vineyard, Massachusetts
Edition: 1.0
Geospatial_Data_Presentation_Form: online
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2008-1288
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Online_Linkage: https://pubs.usgs.gov/of/2008/1288/
Description:
Abstract:
The USGS Woods Hole Science Center conducted a nearshore geophysical survey offshore of the southern coast of Martha's Vineyard, in the vicinity of the Martha's Vineyard Coastal Observatory (MVCO) in August 2007. This mapping program was part of a larger research effort supporting the Office of Naval Research (ONR) Ripples Directed-Research Initiative (DRI) studies at MVCO by providing data collection and modeling. The geophysical data will be used to provide initial conditions for wave and circulation models for the study area. Ultimately, geophysical mapping, oceanographic measurements and modeling will help to improve our understanding of coastal sediment-transport processes.
The geophysical mapping utilized a suite of high-resolution instrumentation to map the surficial sediment distribution, depth and sub-surface geology: dual-frequency 100/500 KHz sidescan-sonar system, 234-KHz interferometric sonar, and 500 Hz -12 KHz chirp sub-bottom profiler. The survey was conducted aboard the M/V Megan Miller August 9-13, 2007. The study area covers 35 square kilometers from about 0.2 km to 5-km offshore of the south shore of Martha's Vineyard, and ranges in depth from ~ 5 to 20 meters.
Purpose:
These data are supplied to provide the raw navigation collected by an Ashtech Z-Extreme receiver and logged using HYPACK, Inc. navigation software (www.hypack.com). RTK navigation was not incorporated to any of the geophysical systems during data acquisition. These data were stored in order to post-process the RTK navigation to provide improved vertical and horizontal accuracies for the swath bathymetric data. RTK provides accuracies on the order of 10s of centimeters (http://www.navcen.uscg.gov/).
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20070809
Ending_Date: 20070813
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -70.600292
East_Bounding_Coordinate: -70.511213
North_Bounding_Coordinate: 41.347370
South_Bounding_Coordinate: 41.301252
Keywords:
Theme:
Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:76cd7a6d-330b-4ec8-a10a-ada7864334ac
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: U.S. Geological Survey
Theme_Keyword: USGS
Theme_Keyword: Woods Hole Science Center
Theme_Keyword: WHSC
Theme_Keyword: Coastal and Marine Geology Program
Theme_Keyword: CMGP
Theme_Keyword: Field Activity Number 07011
Theme_Keyword: R/V Megan Miller
Theme_Keyword: Navigation
Theme_Keyword: point
Theme_Keyword: HYPACK
Theme_Keyword: Ashtech Z-Surveyor Receiver
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: oceans
Theme_Keyword: location
Theme:
Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: navigational data
Theme_Keyword: marine geophysics
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: North America
Place_Keyword: Southeastern Massachusetts
Place_Keyword: Martha's Vineyard
Place_Keyword: Cape Cod
Place_Keyword: Elizabeth Islands
Place_Keyword: Atlantic Ocean
Place_Keyword: United States
Place_Keyword: Northeast United States
Place_Keyword: Atlantic Ocean
Access_Constraints: None
Use_Constraints:
Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey as the originator of the dataset.
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Jane Denny
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Contact_Voice_Telephone: (508) 548-8700x2311
Contact_Facsimile_Telephone: 5084572310
Contact_Electronic_Mail_Address: jdenny@usgs.gov
Native_Data_Set_Environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.2.6.1500
Cross_Reference:
Citation_Information:
Originator: HYPACK, Inc
Publication_Date: 2009
Title: HYPACK Hydrographic Survey Software User Manual
Geospatial_Data_Presentation_Form: document
Online_Linkage: http://www.hypack.com
Data_Quality_Information:
Logical_Consistency_Report:
These are the original raw data files recorded by the HYPACK navigation software. No additional checks or corrections have been made to these files.
Completeness_Report:
These files represent all the real-time kinematic (RTK) navigation recorded by the HYPACK software during USGS cruise 07011 off the southern shore of Martha's Vineyard, 2007.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Real-Time Kinematic (RTK) data were collected using an Ashtech Z-Extreme receiver and were processed and recorded using navigation software from HYPACK, Inc (http://www.hypack.com/). These data were not incorporated into the geophysical data during acquisition. These data were stored in order to post-process the RTK navigation to provide improved vertical and horizontal accuracies for the swath bathymetric data during post-cruise processing. RTK provides accuracies on the order of 10s of centimeters (http://www.navcen.uscg.gov/).
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
Data from the Z-Extreme were also logged to Ashtech's Geodetic Base Station Software (GBSS), and recorded locally to hard disk. GPS signal correction data from a Z-Extreme base station located at the USGS warehouse facility were transmitted via radio modem out to the ship. These data were used by the HYPACK software to provide height offsets from the WGS 84 ellipsoid. These offsets were then translated to water level heights based on the 2003 geoid model (see: http://www.ngs.noaa.gov/GEOID/GEOID03/ for more information), which approximates mean seal level (MSL).
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: Information unavailable from original metadata - assumed USGS
Publication_Date: unknown
Title: Information unavailable from original metadata
Type_of_Source_Media: Information unavailable from original metadata
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20070809
Ending_Date: 20070813
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: Information unavailable from original metadata
Source_Contribution:
Real-Time Kinematic (RTK) navigation data were collected using an Ashtech Z-Extreme receiver. An RTK antenna was positioned between the forward and aft Differential Global Positioning System (DGPS) antennas used by the Coda Octopus F180R motion reference unit (MRU) for position and heading for the swath bathymetric system. The three antennas are mounted on a rigid horizontal pole that is 6.76 meters directly above the MRU and swath bathymetric transducers; an integral part of the sidemount used to deploy the swath bathymetric system from the starboard side of the R/V Megan Miller. The RTK antenna location was defined within HYPACK.
Raw navigation data were saved in HYPACK format (http://www.hypack.com). File name convention is LLL_TTTT.DDD, where LLL is the HYPACK line number, TTTT is the 24 hour time (UTC) for the beginning of the file, and DDD is the Julian day. Times in the file were recorded in UTC (Coordinate Universal Time).
Process_Step:
Process_Description:
Raw HYPACK navigation files were transferred from the navigation acquisition computer to a Macintosh RAID server for accessibility and archival. The raw HYPACK navigation files are stored in separate directories indicating the acquisition Julian Day (JD221 through JD225), corresponding to August 9, 2007 - August 13, 2007. The filenames in each folder are in the format of linenumber_starttime.julianday. For example, filename 064_0057.224 represents HYPACK line number 064, start time 0057 and Julian Day 224. Times are recorded in UTC (Coordinate Universal Time).
Process_Date: 2007
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Jane F. Denny
Contact_Organization: U.S. Geological Survey
Contact_Position: Marine Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: Woods Hole Coastal and Marine Science Center
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Contact_Voice_Telephone: (508) 548-8700 x2311
Contact_Facsimile_Telephone: (508) 457-2310
Contact_Electronic_Mail_Address: jdenny@usgs.gov
Process_Step:
Process_Description:
Edits to the metadata were made to fix any errors that MP v 2.9.36 flagged. This is necessary to enable the metadata to be successfully harvested for various data catalogs. In some cases, this meant adding text "Information unavailable" or "Information unavailable from original metadata" for those required fields that were left blank. Other minor edits were probably performed (title, publisher, publication place, etc.). Reordered the links in the identification section so a landing page link is first. Attempted to modify http to https where appropriate. The source information was incomplete and had to be modified to meet the standard. The distribution format name was modified in an attempt to be more consistent with other metadata files of the same data format. The metadata date (but not the metadata creator) was edited to reflect the date of these changes. The metadata available from a harvester may supersede metadata bundled within a download file. Compare the metadata dates to determine which metadata file is most recent.
Process_Date: 20171019
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: VeeAnn A. Cross
Contact_Position: Marine Geologist
Contact_Address:
Address_Type: Mailing and Physical
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Contact_Voice_Telephone: 508-548-8700 x2251
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: vatnipp@usgs.gov
Process_Step:
Process_Description: USGS Thesaurus keywords added to the keyword section.
Process_Date: 20180720
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: VeeAnn A. Cross
Contact_Position: Marine Geologist
Contact_Address:
Address_Type: Mailing and Physical
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Contact_Voice_Telephone: 508-548-8700 x2251
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: vatnipp@usgs.gov
Process_Step:
Process_Description: Crossref DOI link was added as the first link in the metadata.
Process_Date: 20191118
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: VeeAnn A. Cross
Contact_Position: Marine Geologist
Contact_Address:
Address_Type: Mailing and Physical
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Contact_Voice_Telephone: 508-548-8700 x2251
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: vatnipp@usgs.gov
Process_Step:
Process_Description:
Added keywords section with USGS persistent identifier as theme keyword.
Process_Date: 20200908
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: VeeAnn A. Cross
Contact_Position: Marine Geologist
Contact_Address:
Address_Type: Mailing and Physical
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Contact_Voice_Telephone: 508-548-8700 x2251
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: vatnipp@usgs.gov
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Point
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Geographic:
Latitude_Resolution: 0.000001
Longitude_Resolution: 0.000001
Geographic_Coordinate_Units: Decimal degrees
Geodetic_Model:
Horizontal_Datum_Name: D_WGS_1984
Ellipsoid_Name: WGS_1984
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257224
Entity_and_Attribute_Information:
Overview_Description:
Entity_and_Attribute_Overview:
The times recorded in the navigation file are in UTC (Coordinate Universal Time). Keywords and the information they provide are as follows:
FTP: The first record located at the top of the header used to identify the file format.
VER: HYPACK version number.
INF: General survey information filled in by the data technician.
FIL: Raw format file.
ELL: Ellipsoid information. The name of the ellipsoid followed by the semi-major axis in meters and the flattening ration.
PRO: Project information record where TME indicates Transverse Mercator and the central meridian of -69 indicates UTM, zone 19.
DTM: Datum transformation record
GEO: Geoid model. Blank if not present.
HVU: Horizontal and Vertical Units (meters)
TND: Survey time and date in UTC.
DEV 0: Indicated that the lines collected with device designation 0 are lines of single-beam echo sounder.
OFF: device offsets (none used during this data collection)
DEV 1: Indicates that lines collected with device designation 1 are using Ashtech Z-Extreme, capable of recording antenna elevations above a vertical datum (i.e. real-time kinematic, RTK)
OFF: device offsets (non used during data collection)
LIN 2: planned line data follows
PTS: planned line waypoints (eastings and northings, UTM, zone 19N, meters)
LBP: planned line begin point (easting and northings, UTM zone 19N, meters)
LNN 1: planned line name
EOL: end of planned line
EOH: end of header
The remaining elements have similar information in the first 3 columns. The first column will indicate the data type, the second column will indicate the device that recorded the information (e.g. 1 for Ashtech receiver) and the third column is the time tag (seconds past midnight) that is also sometimes referred to as the latency. The remaining information on each line is specific to the data type.
MSG: Message string in the format "MSG dn t message" where dn=device number; t=time tag (seconds past midnight); message is the message sent from the device.
EC1: echo sounding (singe frequency). Format "EC1 dn t rd", where dn=device number, t=time tag (seconds past midnight), rd=raw depth.
POS: Position of the ship in the format "POS dn t x y" where dn=device number; t=time tag (seconds past midnight); x=easting; y=northing. On this cruise these values are in UTM, Zone 19, WGS84.
QUA: Position quality information in the format "QUA dn t n m h sat mode" where dn=device number; t=time tag (seconds past midnight); n=number of values to follow; m = 10 minus HDOP (horizontal dilution of precision); h=HDOP; sat=number of satellites; mode=GPS mode (NMEA 0183 standard values) where 0=fix not available or invalid; 1=GPS fix; 2=Differential GPS fix; 3=GPS PPS Mode fix; 4=RTK fix; 5=RTK float.
RAW: Position information in the format "RAW dn t n lat long alt utc" where dn=device number; t=time tag (seconds past midnight); n=number of values to follow; lat=raw latitude X 100; long=raw longitude X 100; alt=antenna altitude above ellipsoid (meters); utc=GPS time in the format HHMM.
TID: Tide correction. Format "dn t dc", where dn=device number, t=time tag (seconds past midnight), dc = draft correction.
FIX: Fix (event) mark. Format "FIX vn", where n=FIX format version number, Always 2nd record in file.
The (National Marine Electronics Association) NMEA strings $GPGGA, $GPVTG, and $GPZDA are stored in the HYPACK file. These are defined as follows.
$GPGGA is GPS fix data in the format "$GPGGA, t, lat, lath, long, longh, q, sat, h, a, M, alt, M, t2, refcheck" where t=time in UTC in the format hhmmss.ss; lat=latitude in the format ddmm.mmmmmm; lath= N or S indicating the latitude hemisphere; long=longitude in the format dddmm.mmmmmm; longh=E or W indicating the hemisphere; q=fix quality where 0=fix not available or invalid; 1=GPS fix; 2=Differential GPS fix; 3=GPS PPS Mode fix; 4=RTK fix; 5=RTK float; sat=number of satellites; h=Horizontal Dilution of Precision (HDOP); a=Antenna altitude above mean sea level (geoid); M= units of antenna altitude in meters; alt=height of geoid above WGS84 ellipsoid; M=units of geoidal height in meters; t2=time since last DGPS update; refcheck=DGPS reference station id and the checksum.
Example: $GPGGA,163052.00,4118.964217,N,07036.966471,W,4,10,00.9,00005.332,M,-030.544,M,01,*57 UTC Time = 163052 Latitude = 4118.964217 N Longitude = 7036.966471 W Fix Quality = 4 Number of satellites = 10 HDOP = 00.9 relative accuracy of horizontal position Altitude = 5.332 meters above mean sea level Height of geoid above WGS84 ellipsoid = -30.554 meters Time since last update = 01 Checksum = *57.
$GPVTG is track made good and ground speed in the format "$GPCTG, true, T, mag, M, grsp, N, grdp, K, mode", where t=true course made good over ground in degrees, T= True, m=magnetic course made good over ground in degrees, M=magnetic, gdsp=ground speed, N=Knots, grsp=ground speed, K=Kilometers per hour, mode=Mode indicator (A=Autonomous, D=Differential, E=Estimated, N=Data not valid).
Example: $GPVTG,089.23,T,104.82,M,004.86,N,009.02,K,D*28 True course made good: 089.23 Magnetic course made good: 104.82 Ground speed (knots) = 4.86 Ground speed (kilometers) = 9.02 Mode=Differential
$GPZDA is UTC Date/Time and Local Time Zone Offset in the format "$GPZDA,hhmmss.ss,xx,xx,xxxx,xx,xx" where hhmmss.ss=UTC, xx=Day, 01 to 31, xx=month, 01 to 12, xxx=Year, xx=Local zone description, 00 to +/- 13 hours, xx=Local zone minutes description (same sign as hours), checksum.
Example: $GPZDA,163053.00,09,08,2007,,*60 UTC= 163053.00 UTC day = 09 UTC month = 08 UTM year = 2007 Local zone hours = null Local zone minutes = null Checksum = *60
Entity_and_Attribute_Detail_Citation:
The definitions of the HYPACK strings were acquired from the HYPACK software manual available from: http://www.hypack.com/. The definitions of the NMEA strings were obtained from: http://home.mira.net/~gnb/gps/nmea.html
Distribution_Information:
Distributor:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Jane F. Denny
Contact_Organization: U.S. Geological Survey
Contact_Address:
Address_Type: mailing and physical address
Address: Woods Hole Coastal and Marine Science Center
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Contact_Voice_Telephone: (508) 548-8700 x2311
Contact_Facsimile_Telephone: (508) 457-2310
Contact_Electronic_Mail_Address: jdenny@usgs.gov
Resource_Description: Downloadable Data
Distribution_Liability:
Neither the U.S. government, the Department of the Interior, nor the USGS, nor any of their employees, contractors, or subcontractors, make any warranty, express or implied, nor assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, nor represent that its use would not infringe on privately owned rights. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of these data or related materials. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: HYPACK
Format_Version_Number: Information unavailable from original metadata
Format_Information_Content:
This WinZip (version 9.0) file contains the ANSI text HYPACK navigation files as well as the associated metadata files.
File_Decompression_Technique: WinZip or pkUnzip
Transfer_Size: 27
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Fees: None.
Technical_Prerequisites:
The user must have software capable of uncompressing the WinZip file, such as WinZip or pkUnzip.
Metadata_Reference_Information:
Metadata_Date: 20200908
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Jane F. Denny
Contact_Organization: U.S. Geological Survey
Contact_Position: Marine Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: Woods Hole Coastal and Marine Science Center
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Contact_Voice_Telephone: (508) 548-8700 x2311
Contact_Facsimile_Telephone: (508) 457-2310
Contact_Electronic_Mail_Address: jdenny@usgs.gov
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time

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