Innovative remote sensing exploration...Dr. Richard Gloaguen Helmholtz Institute Freiberg for Resource Technology 5 HIF Airlines DJI Phantom 2 Aibotix Aibot X6v2 Tholeg THO-R-PX-8-10

Dr. Richard Gloaguen I Helmholtz Institute Freiberg for Resource Technology I www.hzdr.de/hif

Innovative remote sensing

exploration

Richard Gloaguen

Dr. Richard Gloaguen

Helmholtz Institute Freiberg for Resource Technology2

iExplo



Multiscale approach



Multi-scale Multi-source

4



HIF Airlines

DJI Phantom 2 Aibotix Aibot X6v2Tholeg

THO-R-PX-8-10

payload capacity 250g 2 kg 5 kg

max. take-off weight

1.5 kg 7 kg 10 kg

flight time 20 min 10-15 min 15-25 min

used for Photogrammetry PhotogrammetryHyperspectral

Magnetics

PhotogrammetryHyperspectral

LiDARMagnetics

Operators BenRobert J.Robert Z.

BenRobert J.Robert Z.

Robert Z.

payload:- Nikon Coolpix A: 16MP RGB- Senops Rikola HSI: 0.6 MP hyperspectral (50 bands in autonomous mode)- Yellowscan Mapper II: 18kHz, 3 echos LiDAR system- GEM Systems GSMP-35U: K-vapour total field sensor- Sensys MagDrone R1: 3-axes flux-gate sensor



HI Airlines

sensefly ebee sensefly ebeePlus

max. take-off weight 0.7 kg 1.1 kg

flight time 50 min 59 min

payload (1) Canon S110: 12MP RGB(2) Sensefly S.O.D.A.: 20MP RGB(3) Parrot Sequoia: 16MP RGB + 1.3MP 4C

multispectral (G-R-RE-NIR)

Operators Ben, Richard, Robert Z.



Hyperspectral cameras

Senops RIKOLA HSI Specim FX10 Specim FX17 Specim AisaFenix Telops HyperCam LW

Spectral range 500-900 nm 400-1000 nm 900-1700 nm 400 - 2500 nm 7700 - 11800 nm

sensor type full-frame(1010x1010 px)

push-broom(1024x1 px)



full-frame(320x256 px)

used for UASoutcrop sensing

OptiSortdrill-core scanneroutcrop sensing

OptiSortdrill-core scanneroutcrop sensing

drill-core scanneroutcrop sensing

outcrop sensingdrill-core scanner



Validation



Validation: handheld spectrometers

Spectral Evolution PSR-3500 Agilent 4300 FTIR

Spectral range 350 - 2500 nm 4000 - 650 cm-1

Spectral Resolution

< 3.5 nm (350-1000 nm)

< 10 nm (@1500 nm)

< 7 nm (@2100 nm)

2 - 16 cm-1 (selectable)

Fore-optics

- Contact Probe

- 1° lens

- 4° lens

- ATR unit- Diffuse Reflectance Head

Bruker S1 Titan 800

Energy range0-50 keV

SensorEngery-Dispersive SolidState Detector

CalibrationsGeoChemAlloy LE

X-ray fluorescence (XRF)

VIS-NIR


Helmholtz Institute Freiberg for Resource Technology

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Spectroscopy

characteristic absorptions for:Al-OH, Fe-OH, Mg-OH and CO3

2-

characteristic absorptions for:Fe(II), Fe(III) and Vegetation



Spectroscopy



Geometric Distortions: UAS (nadir)

PUSH BROOM FRAME BASED

13



Distortions in UAS and terrestrial Hyperspectral

Imagery (HSI)

Jakob et al. (2017) Remote Sensing, 9, 88.

14



REE identification: Epembe Namibia

Booysen et al. 2019



3D point cloud

Hypercloud generation

16

Lorenz et al. 2018



3D Model



Magnetics

UAS magnetometer: Sensys MagDrone R1

Base station magnetometer: Sensys MagBase



Magnetometer calibration

nT

Madriz et al. 2019



Siilinjärvi

s



Siilinjärvi



Otanmäki



Otanmäki

Jackisch et al. 2019



Otanmäki



Otanmäki



Otanmäki



Mission planning and execution



Conclusions

• RPAS extremely useful if processing is adequate

• mission planning fundamental

• data integration challenging

Documents

Innovative remote sensing exploration...Dr. Richard Gloaguen Helmholtz Institute Freiberg for Resource Technology 5 HIF Airlines DJI Phantom 2 Aibotix Aibot X6v2 Tholeg THO-R-PX-8-10