The Application of Airborne Remote Sensing for OSI Aled Rowlands - - PowerPoint PPT Presentation
The Application of Airborne Remote Sensing for OSI Aled Rowlands and Rainier Arndt OSI/Equipment Section Science and Technology Conference, June, 2013 Page 1 Structure . Context Expert Meetings Field Tests Sensors Flight Operations
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Aled Rowlands and Rainier Arndt OSI/Equipment Section
Science and Technology Conference, June, 2013
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Expert Meetings Field Tests Sensors Features and Results Data Products Summary
Flight Operations Context
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Para 69d, Part 2 of the Protocol to the Comprehensive Nuclear Test-Ban Treaty
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… identified OSI-relevant observables that could potentially be detected by MSIR technologies but which need to be tested. These included:
Thermal Infrared Short-wave Infrared Visible Visible digital camera/video
features
VNIR 1 – 0.4 μm
features
LIDAR 2.55 – 0.95 μm SWIR
features
14-7.5 μm Thermal
Movements
changes
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VNIR SWIR Thermal camera Visible camera
Sensor array mounted on the side
sensor at rear.
GPS FODIS
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4.9 km2 1.6 km2 50km2
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1,500m 1,400m 500m 250m
1] Flying height above ground level 2] Sun angle (morning, noon, sunset) 3] Flying direction
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24 May @250m, 0.02m 21 May @500m, 0.1m 25 May @1,400m, 0.2m
Spaceborne Image 1 SPOT (10m)
15/08/11
Site
Modifications
18/08 22/08 29/08 05/09 12/09
Spaceborne Image 2 SPOT (20m)
19/09
Airborne and Ground-based data acquisition Daily acquisition
16/09
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Site
Modifications
07-09/05 20/03/12
Site Modifications
20-21/04
Spaceborne Worldview 2 Radarsat 2 Spaceborne Worldview 2 Radarsat 2
14-15/05 21-25/05
Airborne and Ground-based data acquisition
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18/08 22/08 29/08 05/09 12/09
Aim: assess the extent to which disturbance can be identified and chronology determined Site modification: construction of 5 pits, dug to rock interface at ~weekly intervals then covered; pit 5 remaining exposed
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18/08 250m 22/08 200m 29/08 150m 05/09 100m 12/09 50m
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Aim: assess the extent to which vehicle type can be distinguished and whether chronology can be inferred
splay vegetation, grass then dies away (turns yellowish)
expose more soil.
movements the tank treads become much more apparent as more soil is exposed.
Aerial image (visible) Visible image reveals the pits and roads but which part of the road was used most recently? Thermal image Thermal image reveals that most recent activity has taken place along the southern portion of the access road
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Modifications:
water and two for heated water.
with dripping heads.
21 May, PM @500m, 0.5m 24 May, AM @500m, 0.5m 24 May, PM @500m, 0.5m
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explosives
control
possible
acceleration of ~1 g / 9.8 m s-2
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Change in vegetation reflectance detected after blasting
Reflectance
Heated water dripping loop (25 June, 2012), i.e., a month after water flow ceased during MSFE12.
Aerial image (visible) Lidar reveals anthropogenic features under the canopy.
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