Title

Goulburn-Broken CMA - DEM 

Time period

2010-02-122010-10-26 

Horizontal Accuracy

0.3m  

Vertical Accuracy

0.2m  

Code

MGA Zone 55 GDA94 

Title

ESRI Ascii 

Topic category

• Elevation

Use limitation

General 

Classification

Unclassified  

Description

The 1m DEM is a dataset representing ground surface elevation and is derived from the Ground classified LiDAR point cloud. A 1m grid is projected on a triangulated version of the un-thinned ground point dataset, where triangles have been drawn between the 3 nearest surrounding ground points. A weighted averaged elevation is adapted from the triangulated plane (interpolation type: triangulated height interpolation). The gridded DEM dataset has been interpolated across voids which may be caused by either no LiDAR returns due to water bodies, or removal of buildings, vegetation or other above ground features. No limiting on triangulation has been applied to avoid any voids to be left in the gridded DEM. The DEM has been generated for the full extent of the LiDAR coverage achieved. 

Classification

Unclassified  

Attribute Quality

Positional Accuracy

Conceptual Consistency

Comments

This dataset consists of every point that is part of the classified ground surface. All non-ground objects such as vegetation and man-made structures (eg. bridges, fences) have been removed from the DEM. The elevation values are continuous, floating point values. 

Missing Data

Comments

No limiting on triangulation has been applied to avoid any voids to be left in the gridded DEM. The DEM has been generated across the full extent of the LiDAR data coverage achieved. 

Excess Data

Platform Type

Aerial  

Assembly

Single  

Tile Size

1 km  

Raster Type

DEM  

X Pixel Resolution (cm)

1cm  

Y Pixel Resolution (cm)

1cm  

Seamlessness

Full  

Number of Bands

1 

Band List

1  

Resampling Kernel

Unknown  

Rectification Type

Orthorectified  

Platform Name

Fixed Wing Aircraft  

DEM Creator

Supplier