Canterbury - Cheviot LiDAR 1m DSM (2015)
This layer contains the DSM for LiDAR data from the Cheviot area captured in 2015.
The DEM is available as layer [Canterbury - Cheviot LiDAR 1m DEM (2015)]( http://data.linz.govt.nz/layer/3548 ).
The index tiles are available as layer [Canterbury - Cheviot LiDAR Index Tiles (2015)]( http://data.linz.govt.nz/layer/357 1).
The LAS point cloud and vendor project reports are available from [OpenTopography]( https://portal.opentopography.org/datasets?loc=New%20Zealand ).
Lidar was captured for Environment Canterbury Regional Council by Aerial Surveys on 1 April 2015, under survey name Hurunui. The datasets were generated by Aerial Surveys and their subcontractors. The survey area includes the Cheviot township area. Data management and distribution is by Toitū Te Whenua Land Information New Zealand.
Data comprises:
•DEM: tif or asc tiles in NZTM2000 projection, tiled into a 1:1,000 tile layout
•DSM: tif or asc tiles in NZTM2000 projection, tiled into a 1:1,000 tile layout
•Point cloud: las tiles in NZTM2000 projection, tiled into a 1:1,000 tile layout
Planned pulse density is 1.3 pulses/square metre.
Vertical accuracy specification is per the ICSM LiDAR Acquisition Specifications and Tender Template NZ Version March 2011.
Vertical datum is NZVD2016.
Simple
Identification info
- Date (Creation)
- 2015-04-01
- Date (Publication)
- 2017-04
- Status
- Completed
- Point of contact
-
Role Organisation Electronic mail address Point of contact Toitū Te Whenua Land Information New Zealand
- Spatial representation type
- Grid
Spatial resolution
Equivalent scale
- Denominator
- 1000
- Topic category
-
- Elevation
- Imagery base maps earth cover
Extent
- Geographic identifier
-
nzl
- Title
-
ANZMet Lite Country codelist
- Date (Publication)
- 2009-03-31
- Edition
-
Version 1.0
- Edition date
- 2009-03-31
- Citation identifier
- http://asdd.ga.gov.au/asdd/profileinfo/anzlic-country.xml#Country
- Cited responsible party
-
Role Organisation Electronic mail address Custodian ANZLIC the Spatial Information Council
Extent
Extent
))
Resource format
- Title
-
*.xml
- Date
- Edition
-
Unknown
- ANZLIC Jurisdictions
-
-
New Zealand
-
- ANZLIC Search Words
-
-
LAND-Topography
-
LAND-Cover
-
Resource constraints
- Classification
- Unclassified
Resource constraints
- Use limitation
-
Released under Creative Commons Attribution 4.0 International
Creative Commons Attribution 4.0 International
Link: http://data.linz.govt.nz/license/attribution-4-0-international/
Attribution Required for Copies:
"Copyright in this work is owned by Environment Canterbury Regional Council"
Attribution Required for Derivative works:
"Copyright in the underlying dataset from which this work has been derived is owned by Environment Canterbury Regional Council"
- Access constraints
- Copyright
Resource constraints
- Use limitation
-
Released under Creative Commons Attribution 4.0 International
Creative Commons Attribution 4.0 International
Link: http://data.linz.govt.nz/license/attribution-4-0-international/
Attribution Required for Copies:
"Copyright in this work is owned by Environment Canterbury Regional Council"
Attribution Required for Derivative works:
"Copyright in the underlying dataset from which this work has been derived is owned by Environment Canterbury Regional Council"
- Access constraints
- License
Resource constraints
- Use limitation
-
Released under Creative Commons Attribution 4.0 International
Creative Commons Attribution 4.0 International
Link: http://data.linz.govt.nz/license/attribution-4-0-international/
Attribution Required for Copies:
"Copyright in this work is owned by Environment Canterbury Regional Council"
Attribution Required for Derivative works:
"Copyright in the underlying dataset from which this work has been derived is owned by Environment Canterbury Regional Council"
- Use constraints
- Copyright
Resource constraints
- Use limitation
-
Released under Creative Commons Attribution 4.0 International
Creative Commons Attribution 4.0 International
Link: http://data.linz.govt.nz/license/attribution-4-0-international/
Attribution Required for Copies:
"Copyright in this work is owned by Environment Canterbury Regional Council"
Attribution Required for Derivative works:
"Copyright in the underlying dataset from which this work has been derived is owned by Environment Canterbury Regional Council"
- Use constraints
- License
- Language
- English
- Character encoding
- UTF8
Resource lineage
- Statement
-
Data Acquisition:
Airborne Laser Scanner (ALS) data was acquired from a fixed wing aircraft on 1 April
2015, using Aerial Surveys' Optech Orion H300 LiDAR system.
Survey Specification:
Scanner: Optech Orion H300
Flying height: 1200m AMGL
Scan Angle: +/- 20 degrees
Scan Frequency: 34Hz
Pulse Rate 75kHz
Swath Overlap: 30%
Points Per Sqm: 1.3
Data processing:
The LiDAR sensor positioning and orientation (POS) was determined using the collected GPS/IMU datasets and Applanix POSMMS software. This work was all undertaken in NZGD2000 coordinate system using the data collected from the following basestations:
Project: Ecan Cheviot
Date of Capture: 1/4/15
Base Station Type/Owner: Global Surveys
Bench Mark: GSCV
Base Station Position: 42 48 46.88210 S 173 16 44.94167 E 85.7327 Ell Height
Ant Height : 0.00 Phase Center
Output LAS Projection: TM2000
Height: WGS84 Ellipsoid
Validation was carried out using the guidelines contained in the ICSM specification template as required for this program.
Vertical Accuracy Validation:
The height accuracy of the LiDAR points was checked using check points collected during the ground control survey
Horizontal Accuracy Validation
The positional accuracy of the LiDAR data has been checked by overlaying Sounds Surveying Ltd surveyed data over the LiDAR data displayed coded by intensity. The data was found to fit well in position.
All product deliverables were initially supplied in terms of NZTM and Lyttelton 1937 height datum.
Classification of the point cloud followed the classification scheme below:
0 - Created, never classified
2 - Ground
12 - Flight line overlap points
14 - Above_Ground
Re-processing:
In 2016 the data was reprocessed by Aerial Surveys for LINZ relative to the NZVD2016 vertical datum, and supplied as 1:1000 nominal scale (2500 720m high x 480m wide subtiles per full NZ Topo50 sheet). Lakes and rivers were hydroflattened in the bare earth digital elevation model.The deliverables to LINZ were:
1m gridded bare earth digital elevation model (DEM)
1m gridded digital surface model (DSM)
Classified point cloud
Data hosted by OpenTopography was re-classified: the Above_Ground (14) points were reclassified as Unassigned classification (1)
- Hierarchy level
- Dataset
- Other
-
dataset
Reference System Information
- Reference system identifier
- 2193
Metadata constraints
- Use limitation
-
Released under Creative Commons Attribution 4.0 International
Creative Commons Attribution 4.0 International
Link: http://data.linz.govt.nz/license/attribution-4-0-international/
Attribution Required for Copies:
"Copyright in this work is owned by Environment Canterbury Regional Council"
Attribution Required for Derivative works:
"Copyright in the underlying dataset from which this work has been derived is owned by Environment Canterbury Regional Council"
- Access constraints
- Copyright
Metadata constraints
- Use limitation
-
Released under Creative Commons Attribution 4.0 International
Creative Commons Attribution 4.0 International
Link: http://data.linz.govt.nz/license/attribution-4-0-international/
Attribution Required for Copies:
"Copyright in this work is owned by Environment Canterbury Regional Council"
Attribution Required for Derivative works:
"Copyright in the underlying dataset from which this work has been derived is owned by Environment Canterbury Regional Council"
- Access constraints
- License
Metadata constraints
- Use limitation
-
Released under Creative Commons Attribution 4.0 International
Creative Commons Attribution 4.0 International
Link: http://data.linz.govt.nz/license/attribution-4-0-international/
Attribution Required for Copies:
"Copyright in this work is owned by Environment Canterbury Regional Council"
Attribution Required for Derivative works:
"Copyright in the underlying dataset from which this work has been derived is owned by Environment Canterbury Regional Council"
- Use constraints
- Copyright
Metadata constraints
- Use limitation
-
Released under Creative Commons Attribution 4.0 International
Creative Commons Attribution 4.0 International
Link: http://data.linz.govt.nz/license/attribution-4-0-international/
Attribution Required for Copies:
"Copyright in this work is owned by Environment Canterbury Regional Council"
Attribution Required for Derivative works:
"Copyright in the underlying dataset from which this work has been derived is owned by Environment Canterbury Regional Council"
- Use constraints
- License
Metadata
- Metadata identifier
- 6ebdd9ed-3ff8-3211-793c-efd8f2d62295
- Language
- English
- Character encoding
- UTF8
- Contact
-
Role Organisation Electronic mail address Point of contact Toitū Te Whenua Land Information New Zealand
Type of resource
- Resource type
- Dataset
- Name
-
dataset
- Date info (Revision)
- 2017-03-21
Metadata standard
- Title
-
ANZLIC Metadata Profile: An Australian/New Zealand Profile of AS/NZS ISO 19115:2005, Geographic information - Metadata
- Edition
-
1.1