Title

Port Phillip - LiDAR 

Time period

2007-04-242007-07-29 

Horizontal Accuracy

0.35m  

Vertical Accuracy

0.1m  

Code

MGA Zone 55 GDA94 

Title

LAS 1.2 Classification Level 2 

Topic category

• Elevation

Use limitation

General 

Classification

Unclassified  

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. All tiles were manually edited to ICSM level 3 standard. In this process ground points were analysed by drawing the cross section wherever unusual ground surfaces were found. 

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

Single  

Tile Size

2 km  

Scan Rate (Hz)

70000Hz  

Footprint Size (m)

0.2m  

Point Spacing Actual (pts/m)

0.80000001points/m2  

Ellipsoid Provided

0