Title

East Gippsland CMA - LiDAR 

Time period

2018-04-082019-07-10 

Horizontal Accuracy

0.3m  

Vertical Accuracy

0.2m  

Code

MGA Zone 55 GDA2020 

Title

LAS 1.4 

Topic category

• Elevation

Use limitation

General 

Classification

Unclassified  

Description

The LiDAR Point Cloud is classified into Ground and Non-Ground classes. The data has been classified to ICSM Classification Level 2 (Ground Surface Improvement) for areas within the River AOI (river centerline buffered by 200m). Areas outside the River AOI are classified to ICSM Classification Level 1 (Automated Classification) and include no manual editing or classification improvement. The point cloud outside the River AOI may contain errors and anomalies in the ground and above ground classes that have not been corrected. Anomalies in the ground class will be translated into the DTM product. Proprietary ground classification routines in TerraScan are used to remove any non-ground points and generate an accurate ground surface. Once the ground surface is generated, a manual quality control routine is carried out using aerial imagery, hill shades, cross-sections, and profiles within the TerraSolid software suite to classify the above ground points. The vegetation is auto-classified using the height from ground method. A QA review and supervisor manual inspection is completed on a percentage of the classified tiles within the River AOI. 

Classification

Unclassified  

Attribute Quality

Positional Accuracy

Conceptual Consistency

Comments

Consistent with specification which includes that point cloud classification outside the AOI is not manually edited from automatic classification results. The LIDAR point cloud has been colourised with the concurrent imagery. 

Missing Data

Comments

Complete for river AOIs within the East Gippsland CMA 

Excess Data

Platform Type

Aerial  

Assembly

Single  

Tile Size

1 km  

Pulse Mode

Single 

Scan Rate (Hz)

0Hz  

Scan Frequency (kHz)

300kHz  

Scan Angle (degrees)

42degrees  

Footprint Size (m)

0.40000001m  

Point Density Target (pts/m2)

4points/m2  

Point Density Actual (pts/m2)

3.67000008points/m2  

Point Spacing Target (pts/m)

0.5points/m2  

Point Spacing Actual (pts/m)

0.62points/m2  

Ellipsoid Provided

0 

Ellipsoid Vertical Datum

GRS80 Ellipsoidal (ITRF1992)  

Class Level

2 

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
2	0	1	1	1	1	1	1	1	1	1	1	0