TerraSAR-X Change SAR Basic Product
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1 TerraSAR-X Change SAR Basic Product Version I 1.1
2 Introduction SAR and its Change Detection Potential Targets: Change in the location / existence of 1. Visual Intelligence Analysis through interpreter Common way of comparing the analysis of two of more individual radar images 2. Amplitude Change Detection (ACD) Analysis of radar intensity changes on the surface using two or more repeat-pass images, Suitable for large to medium objects changed in position e.g. Change = New bright pixels representing distinct objects Figure: Sample Radar Intensity T 0 Figure: Sample Radar Intensity T 1 2
3 Introduction SAR and its Change Detection Potential 3. Coherent Change Detection (CCD) Analysis of radar phase changes on the surface using two or more repeat-pass images, Suitable for medium to also smaller subtle changes, not necessarily object based - e.g. through earth works or gravel road use Figure: Sample Radar Coherence between two acquisitions 3 Targets: Point targets and Subtle Changes within Change = 1. New Objects (black pixels) 2. Subtle changes e.g. through earthworks, gravel road use (inhomogenous, dark grey pixels)
4 Introduction TerraSAR-X Change SAR Basic Product Consists of results from amplitude and coherence change detection approaches Scheme for utilization of included amplitude and/or coherence change detection components: Approach / Component Geographic Applicability Target Product Sample Amplitude Change Detection Worldwide Ships, trains, vehicles, temporal installations, buildings Coherence Change Detection Rocky and Arid area Track utilization, earthworks and dump site activity 4
5 Key Case Study Background Belo Monte Dam Project started June 21, 2012 Three hydroelectric power dams will be built Location: Rio Xingu, Para state of Brazil Technical: Pimental dam: 36m tall, 6,248 m in length, 4,768,000 m³ dam volume; Objective Monitoring progress of the construction work locations Data Source Large Area Overview Source: TerraSAR-X StripMap data at 3m spatial resolution Detailed Screening Source: TerraSAR-X SpotLight (2m resolution), High Resolution SpotLight (1 m resolution) and Staring SpotLight (0.25 m resolution) Product TerraSAR-X Change SAR Basic Product, Amplitude Change Detection Component 5
6 Key Case Study TerraSAR-X Change SAR Basic Product Large Area Overview - suitable for monitoring Land/water changes, deforestation, agricultural area changes, construction sites, new buildings, infrastructure road network, expansion. Figure: TerraSAR-X Change SAR Basic Product Amplitude Change Component (RGB composite of TerraSAR-X intensity images) based on TerraSAR-X StripMap Data; change between and
7 Key Case Study TerraSAR-X Change SAR Basic Product Large Area Overview - suitable for monitoring Land/water changes, deforestation, agricultural area changes, construction sites, new buildings, infrastructure road network, expansion. New embankment and concrete work (bright) Water ways above and below dam New water area New settlement, ware houses, central infrastructure, housing Figure: TerraSAR-X Change SAR Basic Product Amplitude Change Component (RGB composite of TerraSAR-X intensity images) based on TerraSAR-X StripMap Data including sample annotation of changes *; change between and * Note: Annotation is not part of Change SAR Basic product 7
8 Key Case Study TerraSAR-X Change SAR Basic Product Detailed Screening suitable for monitoring Warehouses and central infrastructure Bulldozer parking Bulldozer tracks, truckloads dumped Vehicle parking and activity Cranes and concrete work Excavation areas, dumpsites Figure: TerraSAR-X Change SAR Basic Product Amplitude Change Component (RGB composite of TerraSAR-X intensity images) based on TerraSAR-X Staring SpotLight Data; change between and
9 Key Case Study TerraSAR-X Change SAR Basic Product Detailed Screening suitable for monitoring Warehouses and central infrastructure Bulldozer parking Bulldozer tracks, truckloads dumped Vehicle parking and activity Cranes and concrete work Excavation areas, dumpsites Vehicle parking Bulk material excavation Figure: TerraSAR-X Change SAR Basic Product Amplitude Change Component (RGB composite of TerraSAR-X intensity images) based on TerraSAR-X Staring SpotLight Data including annotation of changes*; change between and * Note: Annotation is not part of Change SAR Basic product 9
10 Key Case Study TerraSAR-X Change SAR Basic Product Figure: TerraSAR-X Change SAR Basic Product Amplitude Change Component based on TerraSAR-X Staring SpotLight Data; Image data and change layers between and (red = backscatter decrease, cyan = backscatter increase) 10
11 Key Case Study TerraSAR-X Change SAR Basic Product Figure: TerraSAR-X Change SAR Basic Product Amplitude Change Component (RGB composite of TerraSAR-X intensity images) based on TerraSAR-X Staring SpotLight Data; changes between and Bulldozer Maintenance
12 Key Case Study TerraSAR-X Change SAR Basic Product Spillway construction including changing operation of cranes Figure: TerraSAR-X Change SAR Basic Product Amplitude Change Component (RGB composite of TerraSAR-X intensity images) based on TerraSAR-X Staring SpotLight Data including annotation *; changes between and * Note: Annotation is not part of Change SAR Basic product 12 Bulldozer Maintenance Poss. removed trees Bull Dozer Maintenance
13 Other Case Studies Background Fordow, near the city of Qom, is the site of an underground uranium enrichment facility of Iran Existence of the then-unfinished Fordow Fuel Enrichment Plant (FFEP) was disclosed to the IAEA by Iran on 21 September Objective Monitor construction and other activities Data Source TerraSAR-X Staring SpotLight for detailed screening Product TerraSAR-X Change Detection, Coherence Change Detection Component (due to arid surface conditions) 13
14 Other Case Studies TerraSAR-X Change SAR Basic Product Coherence Change Detection Component: Bright pixels indicate stable objects (e.g. through infrastructure, buildings) Grey and dark pixels indicate changes (e.g. gravel roads frequented in the given monitoring period) or unstable areas Figure: TerraSAR-X Change SAR Basic Product Coherence Change Component (RGB composite of TerraSAR-X intensity images) based on TerraSAR-X Staring SpotLight data; Change between and
15 Other Case Studies TerraSAR-X Change SAR Basic Product Coherence Change Detection Component: Bright pixels indicate stable objects (e.g. through infrastructure, settlements) Grey and dark pixels indicate changes (e.g. gravel roads frequented in the given monitoring period) or unstable areas Figure: TerraSAR-X ChangeSAR Basic Product Coherence Change Component (RGB composite of TerraSAR-X intensity images) based on TerraSAR-X Staring SpotLight data; Change between and
16 Other Case Studies TerraSAR-X Change SAR Basic Product Coherence Change Detection Component: Bright pixels indicate stable objects (e.g. through infrastructure, settlements) Grey and dark pixels indicate changes (e.g. gravel roads frequented in the given monitoring period) or unstable areas Figure: TerraSAR-X Change SAR Basic Product Coherence Change Component (RGB composite of TerraSAR-X intensity images) based on TerraSAR-X Staring SpotLight data; Change between and
17 Other Case Studies Background Monitoring of timber logging progress for Pallisco concession Cameroon Objective Control selective timber logging activities Detect forest disturbances Data Source TerraSAR-X StripMap Product TerraSAR-X Change Detection, Amplitude Change Detection Component 17
18 Other Case Studies TerraSAR-X Change SAR Basic Product, Amplitude Change Detection Component * Note: Annotation is not part of Change SAR Basic product Logging tracks Canopy gapslogged trees Figure: TerraSAR-X Change SAR Basic Product Amplitude Change Component (change layers) including annotation of changes* 18
19 Unique Selling Propositions USP Quick change information Reliable and repeatable change information Precise spatial information on changes Tailor-made product generation targeting smallest changes to largest overview Subtle changes (e.g. earthworks prior to construction) detectable Product extendable to recognition or even identification of changes Reasoning No feasibility study necessary beforehand the project due to active SAR character of input data, fast automatic processing, Reliable change monitoring possible with regular results also for regions challenging for optical sensors (e.g. polar regions, tropical belts) Cloud- and daylight independent input data Automatic processing, not biased by human interaction One-stop-shop data acquisition and processing within Airbus DS Very high geo-location accuracy of TerraSAR-X input data, Flexible Input from TerraSAR-X: From Staring SpotLight (highest commercial resolution) to StripMap or even ScanSAR (large coverage), Standard delivery contains coherence change detection component Product from Airbus DS operator of the strongest fleet of SAR and optical sensors, up to very high resolution 19
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