NCCMA - Stage 2 Floodplains - DEM

dataset
Dataset: NCCMA - Stage 2 Floodplains - DEM Assembly: Single
 
Citation proposal Citation proposal

NCCMA - Stage 2 Floodplains - DEM

Department of Transport and Planning

Description

Title
NCCMA - Stage 2 Floodplains - DEM 
 
 

Temporal

Time period
2011-07-312011-08-23 
 
 

Spatial

Horizontal Accuracy
0.2m 
Vertical Accuracy
0.1m 
Code
MGA Zone 54 GDA94 
 
 

Format

Title
ESRI Ascii 
 
 

Contacts

  Point of contact

  Custodian

 
 

Keywords

Topic category
  • Elevation
 
 

Resource Constraints

Use limitation
General 
Classification
Unclassified 
 
 

Lineage

Description
Proprietary software was used to generate the DEM from the un-thinned classified ground returns. The solution determines the elevation of each cell by calculating the weighted average elevation of all ground returns within the cell. Gaps of one cell are assigned the mean of surrounding cells while larger gaps are interpolated by triangulation from surrounding cells. The DEM is then masked back to the area boundary and exported in tiles. 
 
 

Metadata Constraints Metadata Constraints

Classification
Unclassified 
 
 

Quality

Attribute Quality
Positional Accuracy
Conceptual Consistency
Comments
Some stepping between swaths may be present due to turbulence at the time of capture. The definition of the ground surface under canopy may be less accurate. 
 
Missing Data
Comments
Some voids may be present in areas of diminished returns 
 
Excess Data
 
 

Acquisition Info

Platform Type
Aerial 
Assembly
Single 
Tile Size
2 km 
 
 

Raster Data Details

Raster Type
DEM 
X Pixel Resolution (cm)
1cm 
Y Pixel Resolution (cm)
1cm 
Seamlessness
Not Entered 
Number of Bands
1 
Band List
1 
Resampling Kernel
Unknown 
Rectification Type
Not Entered 
Platform Name
Fixed Wing Aircraft 
 
 

Raster Type Details

DEM Creator
Supplier 
 
 

Survey Details

Sensor

Title
Toposys Harrier 68 
Identifier
Aerial

Type
LIDAR 
 

Aerial Survey Details

Runs
321 
Run Orientation
Various 
Swath Width
828 
Side Overlap
30 
Flying Height Unit
agl metre 
Flight Height
1000 
 
 


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