HYPACK NAVIGATION: Text Files of the DGPS Navigation Logged with HYPACK Software on USGS Cruise 2010-033-FA from July 21 to July 23, 2010

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: Larry Poppe

Publication_Date: 2011

Title:

HYPACK NAVIGATION: Text Files of the DGPS Navigation Logged with HYPACK Software on USGS Cruise 2010-033-FA from July 21 to July 23, 2010

Geospatial_Data_Presentation_Form: text file

Series_Information:

Series_Name: Open-File Report

Issue_Identification: 2011-1005

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://pubs.usgs.gov/of/2011/1005/data/navigation/rafa10033_hypack.zip>

Online_Linkage: <https://pubs.usgs.gov/of/2011/1005/html/catalog.html>

Larger_Work_Citation:

Citation_Information:

Originator: K.Y. McMullen

Originator: L.J. Poppe

Originator: S.D. Ackerman

Originator: D.S. Blackwood

Originator: J.D. Schaer

Originator: M.A. Nadeau

Originator: D.A. Wood

Publication_Date: 2011

Title:

Surficial geology of the sea floor in central Rhode Island Sound, southeast of Point Judith, Rhode Island

Edition: 1.0

Series_Information:

Series_Name: Open-File Report

Issue_Identification: 2011-1005

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://pubs.usgs.gov/of/2011/1005/>

Description:

Abstract:

The U.S. Geological Survey (USGS), in cooperation with the National Oceanic and Atmospheric Administration (NOAA), is producing detailed geologic maps of the coastal sea floor. Bathymetry, originally collected by NOAA for charting purposes, provides a fundamental framework for research and management activities along this part of Rhode Island Sound, shows the composition and terrain of the seabed, and provides information on sediment transport and benthic habitat. Interpretations were derived from the multibeam echo-sounder data collected in Rhode Island Sound. During July 2010, bottom photographs and surficial sediment data were acquired as part of a ground-truth reconnaissance survey of these areas. For more information on the ground-truth survey see <http://quashnet.er.usgs.gov/data/2010/10033/>.

Purpose:

The purpose of these data is to provide the navigation for USGS cruise 2010-033-FA as recorded by CSI LGBX Pro Differential Global Positioning System (DGPS) with HYPACK software. This provides an archive of the original navigation as well as allowing others to reprocess the navigation for their purposes.

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20100721

Ending_Date: 20100723

Currentness_Reference: ground condition

Status:

Progress: Complete

Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -71.383191

East_Bounding_Coordinate: -70.880636

North_Bounding_Coordinate: 41.335115

South_Bounding_Coordinate: 41.221113

Keywords:

Theme:

Theme_Keyword_Thesaurus: General

Theme_Keyword: U.S. Geological Survey

Theme_Keyword: USGS

Theme_Keyword: Coastal and Marine Geology Program

Theme_Keyword: CMGP

Theme_Keyword: Woods Hole Coastal and Marine Science Center

Theme_Keyword: WHCMSC

Theme_Keyword: Field Activity Serial Number 2010-033-FA

Theme_Keyword: Info Bank ID R-33-10-RI

Theme_Keyword: navigation

Theme_Keyword: point

Theme_Keyword: R/V Rafael

Theme_Keyword: CSI LGBX Pro Differential GPS

Theme_Keyword: HYPACK

Theme_Keyword: SEABOSS

Theme_Keyword: bottom photographs

Theme_Keyword: bottom video

Theme_Keyword: OFR 2011-1005

Theme_Keyword: samples

Theme:

Theme_Keyword_Thesaurus: ISO 19115 Topic Category

Theme_Keyword: location

Theme_Keyword: oceans

Theme_Keyword: oceans and coastal

Place:

Place_Keyword_Thesaurus: General

Place_Keyword: North America

Place_Keyword: North Atlantic

Place_Keyword: United States

Place_Keyword: Rhode Island Sound

Place_Keyword: Rhode Island

Place_Keyword: northeast United States

Place_Keyword: Point Judith

Access_Constraints: None.

Use_Constraints:

The 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: Larry Poppe

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) 548-8700 x2314

Contact_Facsimile_Telephone: 5084572310

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: L.J. Poppe

Originator: K.Y. McMullen

Originator: S.D. Ackerman

Originator: D.S. Blackwood

Originator: B.J. Irwin

Originator: J.D. Schaer

Originator: M.R. Forrest

Publication_Date: 2011

Title:

Sea-Floor Geology and Character of Eastern Rhode Island Sound West of Gay Head, Massachusetts

Series_Information:

Series_Name: Open-File Report

Issue_Identification: 2011-1004

Publication_Information:

Publication_Place: Woods Hole Coastal and Marine Science Center, Woods Hole, MA

Publisher: U.S. Geological Survey, Coastal and Marine Geology Program

Other_Citation_Details: DVD-ROM

Online_Linkage: <https://pubs.usgs.gov/of/2011/1004/>

Data_Quality_Information:

Logical_Consistency_Report:

These are the original files recorded by the HYPACK navigation software. ***Of note, although fathometer data appear to be recorded, use with caution. The values recorded by the $SDDPT string appear to be valid (and associated EC1 values). However, $SDDBT values appear to be bogus - which would included the associated EC1 values. Also, two navigation devices were recorded. Device 0 recorded DGPS and are the valid fixes. Device 1 recorded RTK data and are invalid - only collected for test purposes. No additional checks or corrections have been made to these files.

Completeness_Report:

These files represent all the navigation recorded by the HYPACK software version 10.0.5.31 during USGS cruise 2010-033-FA.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

The navigation receiver used was a CSI LGBX Pro DGPS2. The accuracy of this system is better than 10 meters.

Lineage:

Process_Step:

Process_Description:

A USB thumb drive was used to transfer the text navigation files from the computer running the HYPACK navigation software. The original HYPACK navigation files are stored in a single folder. The filenames are in the format of linenumber_starttime.julianday. Since we weren't surveying any previously loaded lines, the "linenumber" is always 000. An example filename is 000_1214.202 which reflects line 000, start time 1214 and Julian day 202. The times in the filename reflect UTC (Coordinate Universal Time) times.

Process_Date: 2010

Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Larry Poppe

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) 548-8700 x2314

Contact_Facsimile_Telephone: 5084572310

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. Keywords and the information they provide are as follows. Not all keywords or elements may appear in all files. ***of special note, although fathometer data are recorded in the files, these values are invalid.:
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.
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 File. Blank if not present. GEO <geo_file> <h_corr> where 'h_corr' is orthometric height correction in meters.
HVU: Horizontal and Vertical Units (meters)
TND: Survey time and date in UTC.
DEV 0: Lines with device designation 0 are lines of DGPS data (CSI LGBX Pro).
OFF 0: device offsets for device 0. Format of the value is OFF dn n1 n2 n3 n4 n5 n6 n7 where dn=device number; n1=starboard, port offsets where positive is starboard; n2=forward, aft offset where positive is forward; n3=height (antenna) or depth (transducer draft) offset - always positive; n4=yaw rotation angle where positive for clockwise rotation; n5=roll rotation angle where port side up is positive; n6=pitch rotation angle where bow up is positive; n7=device latency in seconds. No offset for device 0 during this data collection.
DDT 0: unknown HYPACK header element.
DEV 1: Indicates that the lines with device designation 1 are lines of RTK data. However, these values are invalid and were only being collected for test purposes.
OFF 1: device offsets for device 1 - see description above (no offset for device 1 used during this data collection)
DDT 1: unknown HYPACK header element.
DEV 2: Indicates that the lines with device designation 2 are bathymetry values. ***Not always valid values.
OFF 2: device offsets for device 2 - see description above. A draft of 0.5 meters for the transducer during this data collection but not accounted for in the navigation acquisition.
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 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.
POS: Position of the ship - in this case the antenna location - 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 1=GPS fix and 2=Differential GPS fix.
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.
EC1: Echo Sounding (single frequency) in the format "EC1 dn t rd" where dn=device number; t=time tag (seconds past midnight); rd=raw depth. ***These values are not always valid. If the accompanying NMEA string is $SDDPT, then the values appear okay. Values associated with $SDDBT appear invalid.
GYR: Gyro Data (heading) in the format "GYR dn t h" where dn=device number; t=time tag (seconds past midnight); h=shipheading angle.
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. On this cruise, four different messages were sent from the DGPS: $GPVTG, $GPZDA, $SDDPT and $GPGGA. These will be defined later.
FIX: Event marked manually by the user in the format "FIX dn t event number where dn=device number; t=time tag (seconds past midnight); event number=event number (1,2,3...) automatic increments. The device number is automatically supplying a value of 99.
TID: Tide correction in the format "TID dn t dc" where dn=device number, t=time tag (seconds past midnight), dc = draft correction. ***These values are invalid as they are associated with the RTK data.
The NMEA strings present in the HYPACK file are the $GPVTG, $GPZDA, $SDDPT, and $GPGGA. These are defined as follows.
$GPVTG is track made good and ground speed in the format "$GPVTG, t, T, m, M, n, N, k, K refcheck" where t=true course made good over ground, degrees; T indicates the previous number refers to true course; m=magnetic course made good over ground, degrees; M indicates the previous number refers to magnetic course; n=ground speed; N indicates the previous number refers to Knots, k=ground speed; K indicates the previous number refers to Kilometers per hour, refcheck= checksum at the end of the string with the first character an *.
$GPZDA is UTC Date/Time and local time zone offset in the format "$GPZDA, hhmmss.ss,dd,mm,yyyy, xx, yy checksum" where hhmmss.ss= time in UTC; dd=UTC day; mm=UTC month; yyyy=UTC year; xx=offset to local time zone in hours; yy=offset to local time zone in minutes;checksum ***on this cruise the navigation computer was set to UTC time so the $GPZDA string indicates zero time offset.
$SDDPT is water depth relative to the transducer in meters in the format "$SDDPT, data_meters, offset_meters, checksum
$SDDBT: Depth Below Transducer in the format "$SDDBT,DATA_FEET,f,DATA_METRES,M, DATA_FATHOMS,F*hh<0D><0A>". For example: "$SDDBT,0023.3,f,0007.1,M,003.9,F" where 0023.3, f = 23.3 feet, 7.1,M = 7.1 meters, and 003.9,F = 3.9 fathoms. ***These values appear to be invalid in the HYPACK files.
$GPGGA is GPS fix data in the format "$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 longitude hemisphere; q=fix quality where 2 is a DGPS fix; 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.

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> and <http://www.actisense.com/Downloads/TechTalk/NMEA%200183/The%20NMEA%200183%20Information%20Sheet.pdf>

Distribution_Information:

Distributor:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Larry Poppe

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) 548-8700 x2314

Contact_Facsimile_Telephone: 5084572310

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: WinZip

Format_Version_Number: 9.0

Format_Information_Content:

This WinZip file contains the ANSI text HYPACK navigation files as well as the associated metadata files.

Transfer_Size: 11.7 MB

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

<https://pubs.usgs.gov/of/2011/1005/data/navigation/rafa10033_hypack.zip>

Network_Resource_Name: <https://pubs.usgs.gov/of/2011/1005/html/catalog.html>

Offline_Option:

Offline_Media: DVD

Recording_Capacity:

Recording_Density: 4.7

Recording_Density_Units: Gbytes

Recording_Format: UDF

Fees: None.

Technical_Prerequisites:

The user must have software capable of uncompressing the WinZip file.

Available_Time_Period:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 2011

Metadata_Reference_Information:

Metadata_Date: 20110118

Metadata_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Katherine McMullen

Contact_Organization: U.S. Geological Survey

Contact_Position: Field and Laboratory Technician

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 x2277

Contact_Facsimile_Telephone: (508) 457-2310

Contact_Electronic_Mail_Address: kmcmullen@usgs.gov

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Time_Convention: local time

Metadata_Extensions:

Profile_Name: ESRI Metadata Profile

Metadata_Extensions:

Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>

Profile_Name: ESRI Metadata Profile