Title

Bellarine-Geelong - LiDAR 

Time period

2007-04-262007-07-29 

Horizontal Accuracy

0.35m  

Vertical Accuracy

0.1m  

Code

MGA Zone 55 GDA94 

Title

XYZI ASCII 

Topic category

• Elevation

Use limitation

Withdrawn 

Classification

withdrawn  

Description

Laser strikes were classified into ground and non-ground points using a specifically designed algorithm applied across the entire project area. The quality of the classification was further improved by manual checking and editing of the ALS data using intensity imagery and orthophoto imagery as a reference. Following classification, LiDAR files were exported into XYZI textfile format. 

Classification

Unclassified  

Attribute Quality

Positional Accuracy

Conceptual Consistency

Comments

ALS strikes on water bodies have been omitted from the dataset. The definition of the ground under trees may be less accurate. 

Missing Data

Comments

The LiDAR datasets representing various ground and non-ground features are complete for the defined project extents. 

Excess Data

Platform Type

Aerial  

Assembly

Mosaic  

Tile Size

2 km  

Pulse Mode

Single 

Scan Rate (Hz)

70000Hz  

Scan Frequency (kHz)

0kHz  

Footprint Size (m)

0.2m  

Point Density Actual (pts/m2)

1.55999994points/m2  

Point Spacing Actual (pts/m)

0.80000001points/m2  

Ellipsoid Provided

0 

Geoid Vertical Datum

AUSGEOID98  

Additional Adjustments

Local corrections to Barwon/MelbUni Geoid Model was used. Data has been shifted to best-fit DSE approved 3rd order SMES (AHD) marks. 

Class Level

10 

Classification

Class Level	Class 0 - Unclassified	Class 1 - Default	Class 2 - Ground	Class 3 - Low Vegetation	Class 4 - Medium Vegetation	Class 5 - High Vegetation	Class 6 - Buildings/Structures	Class 7 - Low/High Points	Class 8 - Model Key Points	Class 9- Water	Class 10 - Bridge	Class 12 - Flightline Overlap Points
10	1	0	1	0	0	0	1	0	1	0	0	0