Warrnambool City - LiDAR

dataset
Dataset: Warrnambool City - LiDAR Assembly: Single
 
Citation proposal Citation proposal

Warrnambool City - LiDAR

Description

Title
Warrnambool City - LiDAR 
 
 

Temporal

Time period
2017-02-272017-02-27 
 
 

Spatial

Horizontal Accuracy
0.15m 
Vertical Accuracy
0.10m 
Code
MGA Zone 54 GDA94 
 
 

Format

Title
LAS 1.2 
 
 

Contacts

  Point of contact

  Custodian

 
 

Keywords

Topic category
  • Elevation
 
 

Resource Constraints

Use limitation
General 
Classification
Unclassified 
 
 

Lineage

Description
Range and Positioning data from the IMU and GPS were combined to create LAS files, then LAS files and trajectories were corrected for Ausgeoid09. Ground points were classified automatically and error points were visually checked and removed. Overlap between flight lines was removed, LiDAR points were adjusted for ground control points and control point residuals checked. Laser data was clipped to mosaic boundary. Project model key points and vegetation (high, medium and low) were classified automatically. Bridges and water bodies were manually classified before LAS data was output as LAS v1.2. 
 
 

Metadata Constraints Metadata Constraints

Classification
Unclassified 
 
 

Quality

Attribute Quality
Positional Accuracy
Conceptual Consistency
Comments
The data adheres to the logical rules of data structure, attribution and relationships as per project specifications. 
 
Missing Data
Comments
Point cloud dataset is complete for the defined project extent. Small voids exist around waterbodies and dark rooftops. 
 
Excess Data
 
 

Acquisition Info

Platform Type
Aerial 
Assembly
Single 
Tile Size
1 km 
 
 

Point Cloud Data Details

Pulse Mode
Multipulse 1-4 
Scan Rate (Hz)
84Hz 
Scan Frequency (kHz)
550kHz 
Scan Angle (degrees)
20degrees 
Footprint Size (m)
0.30000001m 
Point Density Target (pts/m2)
8points/m2 
Point Density Actual (pts/m2)
8.15999985points/m2 
Point Spacing Target (pts/m)
0.34999999points/m2 
Point Spacing Actual (pts/m)
0.34999999points/m2 
Ellipsoid Provided
1 
Ellipsoid Vertical Datum
GRS80 Ellipsoidal (ITRF2005) 
Ellipsoid Format
LAS 1.2 
Geoid Vertical Datum
AUSGEOID09 
Environmental Conditions
Project was specified to be flown in appropriate environmental conditions, free of cloud, fog and heavy smoke haze. 
Tidal Conditions
Coastal areas were specified to be captured within 1 hour of low tide. 
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 1 1 1 1 1 1 1 1 1 1 1 1
 
 

Survey Details

Sensor

Title
Optech Galaxy 
Identifier
Aerial

Type
LIDAR 
Cloud Cover Percentage
0 
 

Aerial Survey Details

Runs
24 
Run Orientation
NW-SE 
Swath Width
700 
Side Overlap
20 
Flying Height Unit
agl metre 
Flight Height
1250 
 
 


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