Contacts

Identifiers and Keywords

ANZLIC Id

ANZVI0008104459 

Topic category

• Elevation

Resource Constraints

Use limitation

Data Vic 

Classification

Limited Distribution  

Other Dataset Details

Format

ESRI Ascii 

Spatial

Spatial representation type

Grid  

Reference system identifier

MGA Zone 55 GDA94

Resolution

Horizontal Accuracy

0.3m  

Vertical Accuracy

0.1m  

Row Resolution

1cm  

Column Resolution

1cm  

Quality

Conceptual Consistency

The data adheres to the logical rules of data structure, attribution and relationships as per project specifications. 

Missing Data

Dataset is complete for 3D Regional POC project extents 

Lineage

Description

Proprietary ground classification routines in TerraScan were used to remove any non-ground points and generate an accurate ground surface. Once the ground surface had been generated a manual quality control routine was carried out using aerial imagery, hill shades, cross-sections, and profiles within the TerraSolid software suite to classify the above ground points. The vegetation was auto-classified using the height from ground method. A QA review and manual inspection was completed on a percentage of the classified tiles based on the project size and variability of the terrain. The DEM was created as a one metre cell size raster from LiDAR data classification of 2 (ground) retaining the minimum elevation value of all suitable LAS records in each cell, where no suitable value is present for a given cell the data has been filled in a two step process: 1. Isolated cells with numerous valid adjacent value are filled with a focal mean. 2. Larger gaps are triangulated then rasterized to fill. Using hydrological polygons, manually captured from an intensity raster produced by the same LiDAR data prior to classification, the DEM is processed to the minimum surrounding value where the water appears to be static and minimum transverse value along the length of waterbodies that have apparent flow, refined by an algorithm to have no counterflow along the length of the watercourse. 

Acquisition Date

Begin date

2019-10-07 

End date

2019-10-07 

Instrument

Name

Trimble AX60 

Type

LIDAR 

Platform Type

Aerial 

Acquisition Data (Common)

Status

complete  

Assembly

Single  

Tile Size

1 km  

Raster Details

Number of Bands

1 

Band List

1  

Resampling Kernel

Nearest Neighbour  

Platform Name

Fixed Wing Aircraft  

Seamlessness

Full  

Rectification Type

Not Entered  

DEM Details

DEM Creator

Not Entered  

Aerial Survey Details

Runs

34 

Run Orientation

N-S  

Swath Width

527 

Side Overlap

30 

Flying Height Unit

agl metre  

Flight Height

450 

About the Metadata Record

Metadata identifier

f87bfede-e05d-5bd7-b332-0fa5c36c1e00

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