APEX Airborne Prism Experiment Operational aspects

Transcription

1 APEX Airborne Prism Experiment Operational aspects Koen Meuleman 1, Sindy Sterckx 1, Bart Bomans 1, Jan Biesemans 1, Dries Raymaeckers 1, Andreas Hüni 2, Michael E. Schaepman 2 1 VITO TAP, Mol, Belgium 2 Remote Sensing Laboratories, University of Zurich, Switzerland

2 Table of Content 1. APEX team 2. APEX Operations a. Organization and planning b. Instrument Setup and Aircraft installation c. APEX PAF en dissemination d. Validation 3. APEX website

3 APEX team: organization APEX Operations Team based at VITO, Mol,B APEX team Prodex Office Team taks: a. Flight planning and preparation b. Aircraft and ATC planning and coordination c. Instrument Operation and handling Science Team Operations team d. APEX Processing and Archiving and Data dissemination e. Laboratory calibration together with RSL f. Website

4 APEX Operations - Flight organization and planning 1. VITO is in charge of the operations: a. Flight planning and execution: including aircraft, airworthiness, ATC coordination, Website ( will be portal for flight requests: a. Flight request forms available on website: only based on this info a more detailed planning and price estimation can be provided

5 APEX Operations - Flight organization and planning - Workflow User request form submitted Processing request Users get s: -) possibilities -) priority -) kml + settings -) price (max.) For final approval Official approval by user -)Flight officially listed and planned -) Processing planned

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7 APEX Operations - aircraft installation

8 APEX Operations Instrument setup

9 Instrument Set-up in Aircraft Operator APEX Instrument with Stabilizing Platform integrated in Environmental Thermal Control Box Monitor Flight Management System Navigation Sub System Control and Storage Unit Power Distribution Unit Aircraft I/F

10 APEX Operations - aircraft installation Environmental Thermal Control (ETC) Box Thermal Control Unit (TCU) Optical Subsystem Unit (OSU) Stabilising Platform (Leica PAV30)

11 APEX Operations - aircraft installation Operator s Interface Flight Management System (FMS, TrackAir) Navigation Sub-System (Applanix POS/AV) Power Distribution Unit Main Control Computer (CSU) Storage Unit (SSD and tape)

12 APEX Operations - Aircraft 1. APEX is currently certified to fly on DLR s DO- 228 aircraft (D-CFFU, certification D-CODE ongoing) 2 aircraft available 2. Ongoing activities to certify APEX on several other platforms (CAE Aviation Cessna; DLR Halo Gulfstream; RUAG DO-228NG; etc.). 3. Airworthiness certification costs per aircraft range from approx keur depending on type and rules. 4. Export license rules apply for the operation of APEX in certain countries. 5. EUFAR European Facility for Airborne Research ( offers aircraft + APEX within a EC FP7 project.

13 APEX Processing and Archiving Facility (PAF) 1. VITO is in charge of operational level 0-1 (RSL development) processing and additional level 2-3 processing 2. APEX PAF disposes of dedicated hardware and supports all levels of processing (Level 0-3) 3. Hardware concept is based on VITO s processing experience and various instruments and activities (Pegasus, Medusa, AGIV, CASI, Hymap, AHS, etc.) 4. Middleware based concept supporting parallel computing approaches: Master/Worker and Task/Data decomposition 5. Applications are preserved as is (lean approach), while middleware can be parallelized.

14 Hardware: development + operational environment Development Platform Operational Platform Total 172 cores on 19 machines

15 APEX PAF organizational flow Applanix PosPac Processing Instrument Data Stream APEX PAF Level 0 1X Processor: provided RSL, hosted and Automated by VITO Level 1X Product Calibrated Uniform Image Cubes Level 3 Products Higher Order Products APEX PAF Level 3 Processors: tbd APEX PAF Level 2 Processor: VITO chain Level 2 Products PAF HW VITO (Mol, Geo-located/ Atmospherically Corrected cube

16 APEX PAF - level 0-1 Processing RSL development VITO development PosPac Processing -) Level 1 X data -) Applanix data -) XML s Archiving workflow APEX level 1 standard product (HDF5) Can be delivered to the users (ftp, harddisk)

17 APEX PAF - level 1 HDF5 product

18 APEX PAF - level 1 2 APEX level 1 HDF5 Standard Level 2 product G E O A T M O S R E S APEX Level 2 PAF Direct Georeferencing (ortho production through forward projection): custom VITO software, for better interfacing with MODTRAN4. Integration of Applanix POSPAC for dgps/imu corrections. Smile correction module (optional) VITO has its own C++ implementation of the ATCOR4 model. No pre-compiled LUTs needed, MODTRAN4 is used on-the-fly : all 176 MODTRAN4 parameters become available for AC. Water vapor determination (user or image) Visibility determination (user of image) All algorithms in an optimal workflow perform their work on the raw scene geometry and image resampling to a certain projection system and projection datum is done at the very end USER: APEX level 2 HDF5: ftp, harddisk

19 APEX validation: geometric Oostende, B Inputs: 1. Specific flight pattern 2. GPS/IMU processing (lever arms, dgps,) 3. GCP selection 4. APEX sensor model (FOV, IFOV, CCD size,...) Residual boresight parameters (+/-1 pixel accuracy) Thun, CH

20 Validation: radiometric/spectral Monitoring spectral and radiometric performance Radiometric Spectral at-sensor radiance 8 6 O2 H20 H20 4 Fraunhofer line O2 2 H wavelength (nm)

21 New APEX website: online end of April

22 APEX Airborne Prism Experiment Thank you for your attention!