Corangamite LiDAR

dataset
Dataset: Corangamite LiDAR Assembly: Mosaic
 
Citation proposal Citation proposal

Corangamite LiDAR

Department of Transport and Planning

Description

Title
Corangamite LiDAR 
 
 

Temporal

Time period
2003-07-192003-08-10 
 
 

Spatial

Horizontal Accuracy
1.5m 
Vertical Accuracy
0.5m 
Code
MGA Zone 54 GDA94 
 
 

Format

Title
XYZI ASCII 
 
 

Contacts

  Point of contact

  Custodian

 
 

Keywords

Topic category
  • Elevation
 
 

Resource Constraints

Use limitation
General 
Classification
Unclassified 
 
 

Lineage

Description
Laser Strikes were classified into ground and non-ground points using different algorithms across the project area. Manual checking and editing of the data classification further improved the quality of the terrain model. A thinning algorithm was then applied to remove superflous points not adding to the terrain definition. 
 
 

Metadata Constraints Metadata Constraints

Classification
Unclassified 
 
 

Quality

Attribute Quality
Positional Accuracy
Conceptual Consistency
Comments
Definition of ground under trees may be less accurate. Dry lake beds and saltpans have been classified as ground. Lake areas with water have been classified as non-tround. 
 
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
Mosaic 
Tile Size
5 km 
 
 

Point Cloud Data Details

Pulse Mode
Single Pulse 
Scan Rate (Hz)
25000Hz 
Scan Frequency (kHz)
0kHz 
Footprint Size (m)
0.60000002m 
Point Density Actual (pts/m2)
2.2points/m2 
Point Spacing Actual (pts/m)
0.2066points/m2 
Ellipsoid Provided
0 
Geoid Vertical Datum
AUSGEOID98 
Additional Adjustments
Redundant data from cross strips were used to isolate, quantify and remove a 1.6m height descrepancy in the north/north east section of the project. Additional Photogrametrically derived ground truthing poitns were compared within the north east area near lara. 78 poitns revealed a standard deviation of 0.24m and a standard error of 0.43m. 
Class Level
11 
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
11 1 0 1 0 0 0 0 0 1 0 0 0
 
 

Survey Details

Sensor

Title
Optech ALTM 3025 
Identifier
Aerial

Type
LIDAR 
 

Aerial Survey Details

Run Orientation
Unknown 
Flying Height Unit
Unknown 
 
 


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