Title

Grerang Gravel Pits DEM 

Time period

2015-07-082015-07-08 

Horizontal Accuracy

0.2m  

Vertical Accuracy

0.1m  

Code

MGA Zone 55 GDA94 

Title

XYZ ASCII 

Topic category

• Imagery base maps earth cover

Use limitation

Departmental 

Classification

Limited Distribution  

Description

The DEM originates from the source Photography. Using "Digitals" software a 10m Automatic DEM is produced and checked. Breaklines were mapped using photogrammetry including top and toe of benches, stockpiles, roads, water boundaries and general breaklines. From the 10m DEM and breaklines a 1m DEM is produced, manually checked and adjusted using photogrammetry. This was compared to previously acquired LiDAR DEM and areas of no change were retained. 

Classification

Unclassified  

Attribute Quality

Positional Accuracy

Conceptual Consistency

Comments

The DEM is 1m pixel size throughout the entire data extent. 

Missing Data

Comments

The DEM mosaic has complete coverage for the Gherang gravel pit area, and contains no internal holes (voids). 

Excess Data

Platform Type

Aerial  

Assembly

Mosaic  

Tile Size

Mosaic  

Raster Type

DEM  

X Pixel Resolution (cm)

1cm  

Y Pixel Resolution (cm)

1cm  

Seamlessness

Full  

Number of Bands

3 

Band List

1,2,3  

Resampling Kernel

Not Entered  

Rectification Type

Orthorectified  

Platform Name

Fixed Wing Aircraft  

DEM Creator

Supplier