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Processing Services

This section of the user manual aims to describe the processing services available in the ESA Charter Mapper. Each of the services are described one by one with the provision of all essential information for their correct usage and related examples. This introduction aims to provide all the necessary information required to better understand product specifications and tutorials of the multiple services.

List of processing services

Multiple EO data pre-processing services are currently available in the ESA Charter Mapper.

Image-001

All the services are mapped in the below table 1 with service number, service name and short name.

# Service name Short name Mode EO data Combine multi-sensor assets Owner
1 Optical Products Calibration OPT-Calib Systematic Optical No (intrasensor) Terradue
2 Optical Pan sharpened Image Generation PAN-Sharp On-demand Optical No (intrasensor) Terradue
3 Radar Products Calibration SAR-Calib Systematic Radar No (intrasensor) Terradue
4 Multi-Sensor Band Composite COMBI On-demand Optical and SAR Yes (multi-sensor, multitemporal) Terradue
5 Advanced Multi-Sensor Band Composite COMBI-Plus On-demand Optical and SAR Yes (multi-sensor, multitemporal) Terradue
6 Optical Spectral Index Generation OPT-Index On-demand Optical No (intrasensor) Terradue
7 Co-located Stacking STACK On-demand Optical and SAR Yes (multi-sensor, multitemporal) Terradue
8 Co-registered Stacking Co-Register On-demand Optical and SAR Yes (multi-sensor, multitemporal) Terradue
10 Coherence and Intensity Composite SAR-COIN On-demand SAR No (intrasensor, multitemporal) Terradue
11 SAR Amplitude Change SAR-Change On-demand SAR No (intrasensor, multitemporal) Terradue
12 Flood Extent Mapping (HASARD) HASARD On-demand SAR No (intrasensor, multitemporal) LIST
13 Change Detection Analysis (IRIS) IRIS On-demand Optical No (intrasensor, multitemporal) Nhazca
14 DInSAR Displacement Mapping DInSAR On-demand SAR No (intrasensor, multitemporal) Terradue
15 Hotspot Detection HOTSPOT On-demand Optical No (intrasensor) Terradue
17 Burned Areas Severity Analysis BAS On-demand Optical No (intrasensor, multitemporal) Terradue

Table 1 - Outlook of the ESA Charter Mapper processing services. For each service are given: service number, name, short name, production mode, possibiliy to combine multi-sensor assets, and service owner.

Employment of services according to the type of disaster

Table 2 summarizes how these services are employed in the ESA Charter Mapper according to the type of disaster.

Short name Flood large Flash flood Tsunami Storm / Hurricane Earthquake Landslide Wildfire Volcano
OPT-Calib S S S S S S S S
PAN-Sharp OD OD OD OD OD OD OD OD
SAR-Calib S S S S S S S S
COMBI S and OD S and OD S and OD S and OD S and OD S and OD S and OD S and OD
COMBI-Plus S and OD S and OD S and OD S and OD S and OD S and OD S and OD S and OD
OPT-Index S and OD S and OD S and OD S and OD S and OD S and OD S and OD S and OD
Co-Register S and OD S and OD S and OD S and OD S and OD S and OD S and OD S and OD
STACK OD OD OD OD OD OD OD OD
SAR-COIN OD OD OD OD OD
SAR-Change OD OD OD OD OD OD OD OD
HASARD OD OD OD OD
IRIS OD OD OD OD OD OD OD OD
DInSAR OD OD
HOTSPOT S and OD OD
BAS OD OD

Table 2 - Application of the ESA Charter Mapper processing services to specific disaster types. 'S' stands for Sytematic and 'OD' for On-Demand production modes.

Different types of output products

In the ESA Charter Mapper two main types of Product can be derived from both systematic and on-demand processing services:

  1. Visual Products (Overview images as grayscale or RGB composite).
  2. Physical meaning Products (TOA reflectance, Brightness Temperature, Sigma Nought in dB, interferometric phase and coherence, LOS displacement, indexes, and flood/hotpsot bitmasks).

Each of them is given by following a dedicated data structure (e.g. unit, data type, scale factor, valid range) with respect to the nature of the product, as described in Table 3.

Product Type EO data Description Unit Data type Scale factor Valid Range From service #
Overview Visual OPT, SAR Overview image as RGBA band composite or grayscale product Uint 8 [0, 255] all
Reflectance Physical OPT TOA reflectance for VIS, RE and SWIR CBNs (e.g. blue, nir) Uint 16 0.0001 [0, 10000] 1
Brightness temperature Physical OPT TOA brightness temperature for LWIR CBNs (e.g lwir11) K Uint 16 0.01 1
Spectral index Physical OPT Spectral index (NDVI, NDMIR, NBR, NDWI, NDWI2, MNDWI, NDBI) as normalized difference of CBNs in TOA reflectance Float 32 [-1,1] 6, 17
Sigma nought Physical SAR Sigma nought for L-, C-, X-band SAR data in each polarization (e.g. sigma0-HH-db) dB Float 32 3, 10, 11, 12
SSI Physical OPT SSI value from change detection assigned to every pixel of the image Float 32 13
Coherence Physical SAR Interferometric Coherence from SAR complex imagery (a pair of SLC Datasets). Asset name is: coh_b_pp_YYYYMMDD_YYYYMMDD, where b the SAR-band [x,c,l], pp is the polarization [hh, vv], YYYYMMDD is the date of Reference and Secondary SLC Dataset - Float 32 [0,1] 10, 14
Wrapped Phase Physical SAR Interferometric Phase from SAR complex imagery (a pair of SLC Datasets). Asset name is: phase_b_pp_YYYYMMDD_YYYYMMDD, where b the SAR-band [x,c,l], pp is the polarization [hh, vv], YYYYMMDD is the date of Reference and Secondary SLC Dataset. rad Float 32 [-3.14,3.14] 14
LOS displacement Physical SAR Line of Sight Displacement in centimeters from SAR complex imagery (a pair of SLC Datasets). Asset name is: displacement_b_pp_YYYYMMDD_YYYYMMDD, where b the SAR-band [x,c,l], pp is the polarization [hh, vv], YYYYMMDD is the date of Reference and Secondary SLC Dataset. cm Float 32 14
Hotspot bitmask Physical OPT Hotspot bitmask from hotspot detection based on nir and swir22. (bitmask defined as 0=no-hotspot, 1=hotspot) 1-bit [0,1] 15
Flood bitmask Physical OPT Flood bitmask from the HASARD flood detection service. (bitmask defined as 0=flood, 1=no-flood) 1-bit [0,1] 12
dNBR Physical OPT Difference between the pre and post Normalized Burn Ratio Float 32 17
RBR Physical OPT Relativized Burn Ratio using the pre and post Normalized Burn Ratio Float 32 17
Asset from band arithmetic OPT, SAR A single-band asset generated from a co-located/co-registered stack of N-images (reference plus all secondary assets) produced by the co-location /co-registered processors Float 32 7, 8

Table 3 - Description, unit, bit-depth, scaling factor, valid range and originated service for all ESA Charter Mapper product types.

More details about each of the physical meaning or visual products of the ESA Charter Mapper can be found in the specifications of each service.