Title

Goulburn Broken Stage 3 Floodplains LiDAR 

Time period

2011-09-202011-09-26 

Horizontal Accuracy

0.3m  

Vertical Accuracy

0.1m  

Code

MGA Zone 55 GDA94 

Title

LAS 1.2 

Topic category

• Elevation

Use limitation

General 

Classification

Unclassified  

Description

Laser Range data was acquired and converted to an ellipsoid point cloud by reference to the flight trajectories; the trajectories having been determined from a solution between the onboard GPS and IMU and a network of GPS ground stations. The ellipsoid co-ordinates were then reduced to AHD using AusGeoid09. An automated routine was used to classify the returns into ground and non ground before being visually checked and reclassified if necessary. The point cloud was then adjusted to surveyed ground control before further automated classification of model keypoints and vegetation. Bridges and water-bodies were manually separated from the other classes and a final consistency check performed before the data was output into tiles for delivery. 

Classification

Unclassified  

Attribute Quality

Positional Accuracy

Conceptual Consistency

Comments

Accuracy may be reduced in areas of diminished returns, such as under canopy and over water. 

Missing Data

Comments

Gaps, due to diminished returns over water and under canopy, may be present. 

Excess Data

Platform Type

Aerial  

Assembly

Single  

Tile Size

1 km  

Scan Rate (Hz)

0Hz  

Scan Frequency (kHz)

70kHz  

Scan Angle (degrees)

13degrees  

Footprint Size (m)

0.30000001m  

Point Density Actual (pts/m2)

1.39999998points/m2  

Point Spacing Actual (pts/m)

0.69999999points/m2  

Ellipsoid Provided

0 

Ellipsoid Vertical Datum

GRS80 Ellipsoidal (ITRF2005)  

Geoid Vertical Datum

AUSGEOID09  

Class Level

0 

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
0	1	0	1	1	1	1	1	1	1	1	1	1