2007 JALBTCX Topographic Lidar: Saipan, CNMI

Item Identification

Title:	2007 JALBTCX Topographic Lidar: Saipan, CNMI
Short Name:	usace2007_cnmi_m561_metadata
Status:	Completed
Publication Date:	2007-12-11
Abstract:	These files contain topographic lidar data collected by the CHARTS system in Saipan, CNMI. This file contains both first and last returns. The data points representing bare earth have been classified as such using TerraScan. Classification values are: Class 1: Unclassified Class 2: Ground
Purpose:	The purpose of this survey is to collect topographic lidar across the island of Saipan to support the production of 2-foot contours.
Notes:	10704
Supplemental Information:	This data set was collected for the CNMI Coastal Resources Management Office, CNMI Department of Public Works, and the CNMI Emergency Management Office. The U.S. Army Corps of Engineers, Honolulu District project manager was Milton Yoshimoto (contact number: 808-438-2250). A footprint of this data set may be viewed in Google Earth at: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/msl/561/supplemental/2007_JALBTCX_Topo_Saipan_Lidar.kmz

Keywords

Theme Keywords

Thesaurus	Keyword
ISO 19115 Topic Category	elevation

Thesaurus

Keyword

ISO 19115 Topic Category

elevation

Temporal Keywords

Thesaurus	Keyword
UNCONTROLLED
None	May 2007

Thesaurus

Keyword

UNCONTROLLED

None

May 2007

Physical Location

Organization:	Office for Coastal Management
City:	Charleston
State/Province:	SC

Data Set Information

Data Set Scope Code:	Data Set
Maintenance Frequency:	As Needed
Distribution Liability:	Any conclusions drawn from the analysis of this information are not the responsibility of JALBTCX, the Office for Coastal Management, or its partners.
Data Set Credit:	Acknowledgement of the Joint Airborne Lidar Bathymetry Technical Center of Expertise (JALBTCX) would be appreciated in any publications or derived products.

Support Roles

Data Steward

CC ID: 688796

Date Effective From:	2007-12-11
Date Effective To:
Contact (Organization):	NOAA Office for Coastal Management (NOAA/OCM)
Address:	2234 South Hobson Ave Charleston, SC 29405-2413
Email Address:	coastal.info@noaa.gov
Phone:	(843) 740-1202
URL:	https://coast.noaa.gov

Distributor

CC ID: 688798

Date Effective From:	2007-12-11
Date Effective To:
Contact (Organization):	NOAA Office for Coastal Management (NOAA/OCM)
Address:	2234 South Hobson Ave Charleston, SC 29405-2413
Email Address:	coastal.info@noaa.gov
Phone:	(843) 740-1202
URL:	https://coast.noaa.gov

Metadata Contact

CC ID: 688799

Date Effective From:	2007-12-11
Date Effective To:
Contact (Organization):	NOAA Office for Coastal Management (NOAA/OCM)
Address:	2234 South Hobson Ave Charleston, SC 29405-2413
Email Address:	coastal.info@noaa.gov
Phone:	(843) 740-1202
URL:	https://coast.noaa.gov

Point of Contact

CC ID: 688797

Date Effective From:	2007-12-11
Date Effective To:
Contact (Organization):	NOAA Office for Coastal Management (NOAA/OCM)
Address:	2234 South Hobson Ave Charleston, SC 29405-2413
Email Address:	coastal.info@noaa.gov
Phone:	(843) 740-1202
URL:	https://coast.noaa.gov

Extents

Currentness Reference:	Ground Condition

Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 1139027

W° Bound:	145.689546
E° Bound:	145.830793
N° Bound:	15.290357
S° Bound:	15.091355

Extent Group 1 / Time Frame 1

CC ID: 1139026

Time Frame Type:	Range
Start:	2007-05-06
End:	2007-05-09

Access Information

Security Class:	Unclassified
Data Access Procedure:	This data can be obtained on-line at the following URL: https://coast.noaa.gov/dataviewer;
Data Access Constraints:	None
Data Use Constraints:	Users should be aware that temporal changes may have occurred since this data set was collected and some parts of this data may no longer represent actual surface conditions. Users should not use this data for critical applications without a full awareness of its limitations.

Distribution Information

Distribution 1

CC ID: 742842

Download URL:	https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=561
Distributor:
File Name:	Customized Download
Description:	Create custom data files by choosing data area, product type, map projection, file format, datum, etc.

Distribution 2

CC ID: 742843

Download URL:	https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/msl/561/index.html
Distributor:
File Name:	Bulk Download
Description:	Simple download of data files.

Activity Log

Activity Log 1

CC ID: 688812

Activity Date/Time:	2016-05-23
Description:	Date that the source FGDC record was last modified.

Activity Log 2

CC ID: 688811

Activity Date/Time:	2017-11-14
Description:	Converted from FGDC Content Standard for Digital Geospatial Metadata (version FGDC-STD-001-1998) using 'fgdc_to_inport_xml.pl' script. Contact Tyler Christensen (NOS) for details.

Activity Log 3

CC ID: 718664

Activity Date/Time:	2018-02-08
Description:	Partial upload of Positional Accuracy fields only.

Activity Log 4

CC ID: 742844

Activity Date/Time:	2018-03-13
Description:	Partial upload to move data access links to Distribution Info.

Data Quality

Accuracy:	These data are not attributed. \| Quantitative Value: N/A \| Quantitative Test Explanation: These data are not attributed.
Horizontal Positional Accuracy:	The data positions were obtained using post processed KGPS methods. The horizontal accuracy of the data is better than +/- 0.75m.; Quantitative Value: 0.75 meters, Test that produced the value: 1 Sigma
Vertical Positional Accuracy:	The data positions were obtained using post processed KGPS methods. The vertical accuracy of the data is better than +/- 0.20m.; Quantitative Value: 0.20 meters, Test that produced the value: 1 Sigma
Completeness Report:	These data covered the required survey area with minimal gaps in data coverage except near tops of mountains. These gaps are caused when the ground elevation rises so steeply that the lidar swath (based on maximum scan angles and altitude) from adjacent flight lines no longer overlap. These gaps are at elevations above the maximum required for this project. The data postings are very consistent with nominal posting density of 1.3 meters.
Conceptual Consistency:	The data provided in this file were tested against ground truthed data. At these locations the lidar data matched within 0.20 meters, and different flight line data agreed within 0.20 meters.

Lineage

Sources

2007 CNMI Saipan CHARTS Survey

CC ID: 1139022

Extent Type:	Range
Extent Start Date/Time:	2007-05-06
Extent End Date/Time:	2007-05-09
Source Contribution:	Lidar \| Source Geospatial Form: globe \| Type of Source Media: hard drive

Process Steps

Process Step 1

CC ID: 1139023

Description:	These data were collected using the CHARTS system. It is owned by the Naval Oceanographic Office (NAVO) and operated through contract. The system collects topographic lidar data at 20kHz and hydrographic data at 3kHz. The system also collects RGB imagery at 1Hz. A CASI-1500 hyperspectral line scanner is integrated with the system as well. Aircraft position, velocity and acceleration information are collected through a combination of Novatel and POS A/V equipment. Raw data are collected and transferred to the office for downloading and processing in SHOALS GCS software. GPS data are processed using POSPac software and the results are combined with the lidar data to produce 3-D positions for each lidar shot. These data are edited using Fledermaus software where anomalous data are removed from the dataset. The edited data are written to the national grid system 1 km tiles using chartsLAS, a program written by NAVO. This program reads data from the original binary format files and produces separate ASCII files for first and last return data. Using a model calculated by NAVO, data were converted from ellipsoid to Mean Sea Level heights using the program datum_shift, written by NAVO. The model file Saipan_Adjustment.fin was used for the corrections. The LAS files output form chartsLAS were read into TerraScan and filters were applied to classify ground points. Points designated as ground are assigned a classification value "2" and all other points are assigned the classification value "1" which represents an unclassified state.
Process Date/Time:	2007-11-14 00:00:00

Description:

These data were collected using the CHARTS system. It is owned by the Naval Oceanographic Office (NAVO) and operated through contract.

The system collects topographic lidar data at 20kHz and hydrographic data at 3kHz. The system also collects RGB imagery at 1Hz.

A CASI-1500 hyperspectral line scanner is integrated with the system as well. Aircraft position, velocity and acceleration information are

collected through a combination of Novatel and POS A/V equipment. Raw data are collected and transferred to the office for downloading and

processing in SHOALS GCS software. GPS data are processed using POSPac software and the results are combined with the lidar data to produce 3-D

positions for each lidar shot. These data are edited using Fledermaus software where anomalous data are removed from the dataset. The edited data

are written to the national grid system 1 km tiles using chartsLAS, a program written by NAVO. This program reads data from the original binary

format files and produces separate ASCII files for first and last return data. Using a model calculated by NAVO, data were converted from

ellipsoid to Mean Sea Level heights using the program datum_shift, written by NAVO. The model file Saipan_Adjustment.fin was used for

the corrections. The LAS files output form chartsLAS were read into TerraScan and filters were applied to classify ground points. Points designated

as ground are assigned a classification value "2" and all other points are assigned the classification value "1" which represents an unclassified

state.

Process Date/Time:

2007-11-14 00:00:00

Process Step 2

CC ID: 1139024

Description:	The NOAA Office for Coastal Management (OCM) received files in LAS format. The files contained Lidar intensity and elevation measurements. OCM performed the following processing on the data for storage and provisioning purposes within Digital Coast: 1. The data were converted from UTM coordinates to geographic coordinates (WGS84). 2. The LAS georeferencing information was updated to reflect the tidal vertical datum Mean Sea Level (MSL). 3. The LAS headers were updated and sorted by latitude.
Process Date/Time:	2010-12-01 00:00:00

Description:

The NOAA Office for Coastal Management (OCM) received files in LAS format. The files contained Lidar intensity and elevation measurements.

OCM performed the following processing on the data for storage and provisioning purposes within Digital Coast:

1. The data were converted from UTM coordinates to geographic coordinates (WGS84).

2. The LAS georeferencing information was updated to reflect the tidal vertical datum Mean Sea Level (MSL).

3. The LAS headers were updated and sorted by latitude.

Process Date/Time:

2010-12-01 00:00:00

Catalog Details

Catalog Item ID:	50060
GUID:	gov.noaa.nmfs.inport:50060
Metadata Record Created By:	Anne Ball
Metadata Record Created:	2017-11-15 15:24+0000
Metadata Record Last Modified By:	SysAdmin InPortAdmin
Metadata Record Last Modified:	2022-08-09 17:11+0000
Metadata Record Published:	2022-03-16
Owner Org:	OCMP
Metadata Publication Status:	Published Externally
Do Not Publish?:	N
Metadata Last Review Date:	2022-03-16
Metadata Review Frequency:	1 Year
Metadata Next Review Date:	2023-03-16