2007-8 Southern Rural Water LiDAR
dataset
Dataset: 2007-8 Southern Rural Water LiDAR
Assembly: Single
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Citation proposal Citation proposal
2007-8 Southern Rural Water LiDAR Department of Transport and Planning https://metashare.maps.vic.gov.au/geonetwork/srv/eng/catalog.search#/metadata/fdf0e902-ae65-5785-b848-f7965a894c9a |
- 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
- 2007-8 Southern Rural Water LiDAR
Temporal
- Time period
- 2008-07-282008-08-03
Spatial
- Horizontal Accuracy
- 0.35m
- Vertical Accuracy
- 0.1m
- Code
- MGA Zone 55 GDA94
Maintenance
Format
- Title
- XYZ ASCII
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
- Unthinned ground points Fugro Spatial Solutions Pty Ltd aim is to select those points that are part of a clean ground surface, which might not be 100% of the ground hits. This results in a cleaner dataset, without compromising on terrain detail and accuracy. Ground filtering algorithms, tailored for this project, data type and terrain type, are applied to the full dataset. The ground filtered dataset is then visually checked by an operator, and incorrectly classified data is corrected or the ground filtering algorithm is adjusted and then visually checked. For the verification of the ground classifications, intensity imagery is used as a backdrop image. Thinned ground points A modelkey point dataset is extracted from the unthinned ground points dataset, consisting of those points that contribute to the shape of the terrain. Non contributing points are removed. First return points The ALS system is capable of collection a total of 4 returns from each pulse. This dataset consists of only the first returns, which can also be single returns. Last return points This dataset consists of only the last returns, which can also be single returns. non-ground points Any lidar return, not classified as ground, but higher than ground, is classified as non-ground return. Points closer than 30cm from the ground surface are eliminated from this dataset, to avoid having very low bushes, schrubs and grasses becoming part of this dataset. Contours Smoothed contours at 0.5 interval have been generated over the project area.
Metadata Constraints
- Classification
- Unclassified
Quality
Attribute Quality
Positional Accuracy
Conceptual Consistency
- Comments
- ALS strikes on water bodies have been ommitted from the dataset. The definition of the ground under trees may be less accurate.
Missing Data
- Comments
- The LiDAR datasets representing various ground and non-ground features are complete for the defined project extents.
Excess Data
Acquisition Info
- Platform Type
- Aerial
- Assembly
- Single
- Tile Size
- 2 km
Raster Data Details
Point Cloud Data Details
- Footprint Size (m)
- 0.31999999m
- Ellipsoid Provided
- 0
Contour Data Details
Survey Details
Sensor
- Title
- Leica ALS50
- Identifier
- Aerial
- Type
- LIDAR
Aerial Survey Details
- Runs
- 67
- Run Orientation
- E-W
- Swath Width
- 992
- Side Overlap
- 20
- Flying Height Unit
- agl metre
- Flight Height
- 1400
Overviews
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Associated resources
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