ECHIDNA® Pilot Study Mt Gambier: Objectives and Results

Glenn Newnham & Darius Culvenor

Ensis Forests

David Jupp & Jenny Lovell

CSIRO Marine & Atmospheric Research

March 2006

ECHIDNA® Pilot Study Mt Gambier

ECHIDNA® Validation Instrument (EVI)

ECHIDNA® Validation Instrument (EVI)

Unique design:

Full waveform digitising

Full hemispherical scanning

Variable beam divergence

Deliberately over-engineered scientific instrument

Single scan takes 3 – 20 mins

0.2 – 4 million individual laser pulses

200MB – 4GB of data

Data interpretation currently office-based

ECHIDNA® Pilot Study Mt Gambier

EVI Data: Waveforms

ECHIDNA® Pilot Study Mt Gambier

Results – Heights

ECHIDNA® Validation Instrument Height Estimation

Determine the height at which the mean waveform reaches the noise floor

Slight negative bias

ECHIDNA® Pilot Study Mt Gambier

Results – Heights

EVI Predominant Height (PDH) computed from mean height

Strong relationship to ForestrySA PDH

Slight negative bias Predominant Height

y = 0.9498xR = 0.87

0

10

20

30

40

50

0 10 20 30 40 50

ForestrySA PDH

EV

I PD

H

ECHIDNA® Pilot Study Mt Gambier

Other Outputs – Discrete Point Analysis

ECHIDNA® Pilot Study Mt Gambier

Other Outputs – Discrete Point Analysis

Digital Elevation Model Canopy Elevation Model