Adelaide LiDAR 2008  

Authors / CoAuthors

Abstract

The Adelaide 2009 LiDAR data was captured over the Adelaide coastal metropolitan area between 13th and 19th of September 2008. Some data were re-flown on the 5th of January 2009 due to instrument errors and data gaps. The data were acquired by AAMHatch (now AAMGroup), and purchased by the Commonwealth Department of Climate Change and Energy Efficiency under licence for use by Commonwealth, State and Local Government organisations. The data was captured with a point density of 0.8 points per square metre. Overall vertical accuracy has been confirmed at <15cm (68% confidence level). The data are available as mass point files (LAS) comprising ground, thinned ground and non ground points in 2km tiles in addition to a gridded DEM and hydrologically enforced DEM or HDEM. The hydrologically conditioned and drainage enforced 2m DEM or HDEM was developed in 2010 as part of the Urban DEM project managed by the CRC for Spatial Information and Geoscience Australia. The HDEM was produced by SKM using the ANUDEM program. The HDEM ensures that primary stream/channel flow, and water flow across the land surface are accurately represented. The hydrologically enforced elevation model should be used for hydrological modelling.

Product Type

dataset

eCat Id

70667

Contact for the resource

Keywords

• DEM topographic

( Theme )

• DEM

• AU-SA

Australian and New Zealand Standard Research Classification (ANZSRC)

• Topology

• Published_Internal

Publication Date

2010-01-01T00:00:00

Creation Date

Security Constraints

Australian Government Security ClassificationSystem    

Classification - unclassified

Legal Constraints

Special, MOU, etc.

Access - restricted

Use - license

Status

Purpose

Maintenance Information

notPlanned

Topic Category

elevation

Series Information

Lineage

Ground support: GPS base station data was provided by the Victorian Fovernment GPSnet Adelaide CORS station without incident. Ground data has been compared to 400 test points obtained by field survey and ssumend to be error-free. Test points were distributed in five groups across the mapping area and located on open clear ground. Comparison fo the field test points with elevations interpolated from measured data resulted in a mean difference of 0.2834m being removed from the data. Data processing: Reduction of the ALS data proceeded without any significant problems. Laser stikes were classigied into ground and non-ground points using a single algorith accross the project area. Manual checking and editing fo the data classidication further improved the quality of the terrain model. Data Presentation: The data provided has been supplied in accordance with a specification agreed with the primary client. The definition fo the ground under trees may be less accurate. NEDF Metadata Acquisition Start Date: 13/09/2008 Acquisition End Date: 5/01/2009 Sensor: LiDAR Device Name: Leica ALS50-II (S/N: 091) Flying Height (AGL): UNK INS/IMU Used: - Number of Runs: UNK Number of Cross Runs: UNK Swath Width: UNK Flight Direction: - Swath (side) Overlap: UNK Horizontal Datum: GDA94 Vertical Datum: AHD71 - using local Geoid model Map Projection: MGA54 Description of Aerotriangulation Process Used: - Description of Rectification Process Used: - Spatial Accuracy Horizontal: 0.25 Spatial Accuracy Vertical: 0.15 Average Point Spacing (per/sqm): 0.8 Grid Resolution: 10 Laser Return Types: 1st and last Data Thinning: - Laser Footprint Size: 0.3 Surface Type: HDEM Product Type: GRID Distribution Format: ESRI GRID Calibration certification (Manufacturer/Cert. Company): AAM Hatch Pty Ltd Limitations of the Data: The definition of the ground under trees may be less accurate. Processing/Derivation Lineage: AAM Hatch Pty Ltd WMS: http://WIN-UDEM2:8399/arcgis/services/Adelaide_2009/MapServer/WMSServer?

Parent Information

Extents

[-35.0619, -34.7639, 138.4539, 138.773]

Reference System

Spatial Resolution

Service Information

Associations

Downloads and Links

Source Information

Adelaide LiDAR 2008