Title

North Central CMA - DEM 

Time period

2009-12-012011-08-22 

Horizontal Accuracy

0.2m  

Vertical Accuracy

0.1m  

Code

MGA Zone 54 GDA94 

Title

ESRI Ascii 

Topic category

• Elevation

Use limitation

General 

Classification

Unclassified  

Description

The DEM has been generated from the unthinned LiDAR returns classified as ground. Triangles are drawn between the three nearest ground points and the area weighted average of the surrounding triangles is used to determine the elevation of grid cell centroids. The DEM has been interpolated across voids caused by diminished returns due to water-bodies and the removal of vegetation and buildings. 

Classification

Unclassified  

Attribute Quality

Positional Accuracy

Conceptual Consistency

Comments

All non-ground objects such as vegetation and man made structures have been removed from the DEM. No limiting on triangulation over voids has been applied. 

Missing Data

Comments

The DEM is complete within the boundary of the attached project footprint. 

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