Identifiers and Keywords

ANZLIC Id

ANZVI0008102788 

Topic category

• Elevation

Resource Constraints

Use limitation

General 

Classification

Unclassified  

Other Dataset Details

Format

LAS 1.2 - Class(Ground, Unclassified) 

Spatial

Spatial representation type

Point Cloud  

Reference system identifier

MGA Zone 54 GDA94

Resolution

Horizontal Accuracy

0.3m  

Vertical Accuracy

0.2m  

Quality

Conceptual Consistency

Consistent with specification 

Missing Data

No omission 

Lineage

Description

The LiDAR Point Cloud is classified into Ground and Non-Ground classes. Only points that are part of a clean ground surface, which might not be 100% of the ground hits are classed as Ground. Ground filtering algorithms, tailored for this project, data type and terrain type, were 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 again. For the verification of the ground classification, intensity imagery is used as a backdrop image. Returns on water have been treated the same as returns on land, where the Ground filtering algorithms classify points as Ground or Non-Ground. Ground Class: This subset consists of every point that is part of the classified ground surface, intensity value info for every point is included. Non-Ground Class: Any LiDAR return, not classified as ground, but higher than ground (>30cm above ground), is classified as a Non-Ground return. These also have the intensity values included. Above ground datasets only start at 30cm above the classified ground surface, to avoid low grasses/system noise to become part of this above ground dataset. 

Acquisition Date

Begin date

2010-01-05 

End date

2010-10-20 

Instrument

Name

Leica ALS50-II 

Type

LIDAR 

Platform Type

Aerial 

Acquisition Data (Common)

Status

complete  

Assembly

Single  

Tile Size

1 km  

Point Cloud Details

Scan Rate (Hz)

36Hz  

Footprint Size (m)

0.36000001m  

Point Density Actual (pts/m2)

4points/m2  

Ellipsoid Provided

0 

Aerial Survey Details

Runs

397 

Run Orientation

Not Entered  

Swath Width

992 

Side Overlap

20 

Flying Height Unit

agl metre  

Flight Height

1022 

About the Metadata Record

Metadata identifier

469a2de2-24b3-52c7-a7e6-7eb2912f3858

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