10cm Lara - LiDAR
dataset
Dataset: 10cm Lara - LiDAR
Assembly: Single
|
Citation proposal Citation proposal
10cm Lara - LiDAR Department of Transport and Planning https://metashare.maps.vic.gov.au/geonetwork/srv/eng/catalog.search#/metadata/f5dd0833-8515-513c-b8b8-531b455c9315 |
- Description
- Temporal
- Spatial
- Maintenance
- Format
- Contacts
- Keywords
- Resource Constraints
- Lineage
- Metadata Constraints
- Quality
- Acquisition Info
- Raster Data Details
- Raster Type Details
- Point Cloud Data Details
- Contour Data Details
- Survey Details
Simple
Description
- Title
- 10cm Lara - LiDAR
Temporal
- Time period
- 2012-02-062012-02-07
Spatial
- Horizontal Accuracy
- 0.2m
- Vertical Accuracy
- 0.1m
- Code
- MGA Zone 55 GDA94
Maintenance
Format
- Title
- LAS 1.2 - Class(Model Key Points, Non-Ground)
Contacts
Point of contact
Department of Transport and Planning
-
Coordinated Imagery Program
PO Box 500
East Melbourne
Victoria
3002
Australia
Keywords
- Topic category
-
- Elevation
Resource Constraints
- Use limitation
- General
- Classification
- Unclassified
Lineage
- Description
- Laser strikes were classified into ground and non-ground points using a single algorithm across the project area. Further classification by algorithm was undertaken to distinguish above ground features, such as buildings and vegetation. Manual checking and editing of the data classification was compared against available imagery to further improved the quality of the classification and terrain model. The LAS file point classifications levels are formatted to comply with ICSM Standard LiDAR Point Classes. GPS base station support was provided by GPSnet CORS base stations. Ground check points allowed an assessment of the accuracy of the ALS data. The vertical accuracy of the data in this volume has been enhanced to 0.10m by means of adjustment to additional field survey reference points that were observed within the Lara project area.
Metadata Constraints
- Classification
- Unclassified
Quality
Attribute Quality
Positional Accuracy
Conceptual Consistency
- Comments
- The definition of the ground may be less accurate in isolated pockets of dissimilar terrain/vegetation combinations. Accuracy of the ground surface under dense canopy may be reduced. Laser accuracy at swath edges may be reduced. Ground definition in vegetated terrain may contain localized areas with systematic errors or outliers which fall outside this accuracy estimate. Gaps may occur due to diminished returns over water and materials with low laser reflectivity, such as black composite roofing.
Missing Data
- Comments
- The data is consistent with respect to the visual representation of ground and non-ground features, continuity at the tile boundaries and representation of elevation values.
Excess Data
Acquisition Info
- Platform Type
- Aerial
- Assembly
- Single
- Tile Size
- 2 km
Raster Data Details
Point Cloud Data Details
- Pulse Mode
- Single Pulse, Multi Channel
- Scan Rate (Hz)
- 45Hz
- Scan Frequency (kHz)
- 100kHz
- Scan Angle (degrees)
- 22degrees
- Footprint Size (m)
- 0.25m
- Point Density Actual (pts/m2)
- 4points/m2
- Point Spacing Actual (pts/m)
- 0.5points/m2
- Ellipsoid Provided
- 1
- Ellipsoid Vertical Datum
- GRS80 Ellipsoidal (ITRF2005)
- Ellipsoid Format
- LAS 1.2 - Class(Model Key Points, Non-Ground)
- Geoid Vertical Datum
- MELBOURNEGEOID08
- Class Level
- 2
- Classification
-
Class Level Class 0 - Unclassified Class 1 - Default Class 2 - Ground Class 3 - Low Vegetation Class 4 - Medium Vegetation Class 5 - High Vegetation Class 6 - Buildings/Structures Class 7 - Low/High Points Class 8 - Model Key Points Class 9- Water Class 10 - Bridge Class 12 - Flightline Overlap Points 2 0 0 0 0 0 0 0 0 0 0 0 0
Contour Data Details
Survey Details
Sensor
- Title
- Optech ALTM Orion
- Identifier
- Aerial
- Type
- LIDAR
Aerial Survey Details
- Runs
- 1000
- Run Orientation
- E-W
- Swath Width
- 807
- Side Overlap
- 25
- Flying Height Unit
- agl metre
- Flight Height
- 1000
Overviews
Provided by
Views Views
f5dd0833-8515-513c-b8b8-531b455c9315
Access to the portal Access to the portal
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Associated resources
Not available