Contacts

Identifiers and Keywords

ANZLIC Id

ANZVI0008101926 

Topic category

• Elevation

Resource Constraints

Use limitation

General 

Classification

Unclassified  

Other Dataset Details

Format

LAS 1.2 

Spatial

Spatial representation type

Point Cloud  

Reference system identifier

MGA Zone 55 GDA94

Resolution

Horizontal Accuracy

0.3m  

Vertical Accuracy

0.1m  

Quality

Conceptual Consistency

Accuracy may be reduced in areas of diminished returns, such as under canopy and over water. 

Missing Data

Gaps, due to diminished returns over water and under canopy, may be present. 

Lineage

Description

Laser Range data was acquired and converted to an ellipsoid point cloud by reference to the flight trajectories; the trajectories having been determined from a solution between the onboard GPS and IMU and a network of GPS ground stations. The ellipsoid co-ordinates were then reduced to AHD using AusGeoid09. An automated routine was used to classify the returns into ground and non ground before being visually checked and reclassified if necessary. The point cloud was then adjusted to surveyed ground control before further automated classification of model keypoints and vegetation. Bridges and water-bodies were manually separated from the other classes and a final consistency check performed before the data was output into tiles for delivery. 

Acquisition Date

Begin date

2011-09-20 

End date

2011-09-26 

Instrument

Name

ALTM Gemini 

Type

LIDAR 

Platform Type

Aerial 

Acquisition Data (Common)

Status

complete  

Assembly

Single  

Tile Size

1 km  

Point Cloud Details

Scan Rate (Hz)

0Hz  

Scan Frequency (kHz)

70kHz  

Scan Angle (degrees)

13degrees  

Footprint Size (m)

0.30000001m  

Point Density Actual (pts/m2)

1.39999998points/m2  

Point Spacing Actual (pts/m)

0.69999999points/m2  

Ellipsoid Provided

0 

Ellipsoid Vertical Datum

GRS80 Ellipsoidal (ITRF2005)  

Geoid Vertical Datum

AUSGEOID09  

Class Level

0 

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
0	1	0	1	1	1	1	1	1	1	1	1	1

Aerial Survey Details

Runs

112 

Run Orientation

E-W  

Swath Width

470 

Side Overlap

30 

Flying Height Unit

agl metre  

Flight Height

1000 

About the Metadata Record

Metadata identifier

bb41c512-b67a-5c78-b151-9bd18ab61691

Resource Type

Dataset  

Date info ( Revision )

2023-03-22T00:22:23

Standard Name

ISO 19115-3:2018 

Profile Name

DELWP Profile 

Profile Version

Version 1 

Profile Date

2019-05-24  

Metadata Constraints

Classification

Unclassified