Remote Sensing Lab: The Products Point Of View Remote Sensing Lab performs processing of the images acquired with its equipment Different products are available to the users: Standard products On-Request products L0 / L1b / L2 / L3 INTA PROCESSING RESOURCES: HW: SUN WS, PCs... SW: IDL+ENVI, ERDAS, GEOMATICA, MIRAMON, PARGE, 6S, PCMODWIN, MATLAB... OTHER EQUIPMENT: GER1500, GPS receivers...
HARD DRIVE *.bin files backup on tape AHS DATA FLOW Quality check: Ahs_process.m Ingestion: AHSImportUtility Instrument Proc: AHSImportUtility Raw ENVI files ( 753 x L x 80) PARGE MODTRAN ENVI... Mandatory: Optional L1a / L2 /L3 products Dissemination on CD/DVD
Example of AHS quick-looks
AHS STANDARD PRODUCTS identification radiometric correction geometric correction L0 / L1a raw data no process no process L1b at-sensor radiance L1c georeferenced at-sensor radiance L2a georeferenced reflectance apparent temper. & from ND to Ls using test bench + labsphere data for VIS-NIR-SWIR and sensor BlackBodies for TIR bands from ND to Ls using test bench + labsphere data for VIS-NIR-SWIR and sensor BlackBodies for TIR bands from Ls to ρ using MODTRAN no process direct georeferencing PARGE direct georeferencing PARGE using using
AHS PRODUCTS BACKUP PROCEDURES: Transformation from Ls to ρ using field spectroradiometry signatures and a suitable least squares fitting tool (as Empirical Line Method from ENVI) Transformation from Ls to ρ using 6S Use of GCPs and a suitable transformation (for example thin plate spline from Geomatica ) EXAMPLES OF AHS ON-REQUEST PRODUCTS S-Bend corrected images Surface brightness temperature via MODTRAN Level 3 data: thematic classifications, emissivity images... Formats: ERDAS-IMG, GEOMATICA-PCI...
AHS PRODUCTS METADATA All image products will be delivered with a metadata file - there will be a different file per flight line 90% of the metadata elements derived from ISO19115:2003 "Geographic information: metadata" A few extra elements documented following the draft standards ISO19130 and ISO19115-part 2 File format: excel and XML files
AHS image (RGB 15/8/2) September 2003
Remote Sensing Lab capabilities: hyperspectral sensors Cáceres RGB combination of thermal images. Channels 77, 73, 71.
Remote Sensing Lab capabilities: hyperspectral sensors Temperature plot at different wavelengths. Natural vs artificial material behaviour
Doñana marshlands (RGB 15/8/3) 27 April 2004
Doñana marshlands (RGB 15/8/3) 27 April 2004
Doñana marshlands (RGB 77/75/72) 27 April 2004
Doñana marshlands (RGB 77/75/72) 27 April 2004