An overview of teh EnMAP Ground Segment services of interest for the users of the EnMAP data products

Carmona, Emiliano

Engelbrecht, Sabine

Habermeyer, Martin

Mühle, Helmut

Pato, Miguel

Pinnel, Nicole

Wirth, Katrin

Institute of Transport Research:Publications

The Ground Segment of the EnMAP Mission: from Tasking to Product Download1 Remote Sensing Technology Institute, DLR, 82234 Weßling, Germany2 German Remote Sensing Data Center, DLR, 82234 Weßling, Germany3 German Space Operations Center, DLR, 82234 Weßling, Germany1st EnMAP User Workshop10 – 11 October 2023E. Carmona1, S. Engelbrecht2, M. Habermeyer2, H. Mühle2, M. Pato1, N. Pinnel2, K. Wirth3 and the EnMAPGround Segment TeamThe EnMAP Ground Segment• Under DLR responsibility and led by the Earth Observation Center (DFD and IMF institutes) and the German Space Operation Center (GSOC)10 October 2023● The Ground Segment of the EnMAP mission ● 1st EnMAP User Workshop DLR.DE    2EnMAP MissionThe EnMAP Ground Segment• Under DLR responsibility and led by the Earth Observation Center (DFD and IMF institutes) and the German Space Operation Center (GSOC)• GSOC: Mission operations, generate and send telecommands, receive telemetry, flight dynamics, mission planning10 October 2023● The Ground Segment of the EnMAP mission ● 1st EnMAP User Workshop DLR.DE    3The EnMAP Ground Segment10 October 2023● The Ground Segment of the EnMAP mission ● 1st EnMAP User Workshop DLR.DE    4• Under DLR responsibility and led by the Earth Observation Center (DFD and IMF institutes) and the German Space Operation Center (GSOC)• GSOC: Mission operations, generate and send telecommands, receive telemetry, flight dynamics, mission planning• DFD: Payload data reception, data processing, data archiving and user interfaces (Instrument Planning and EOWEB)The EnMAP Ground Segment10 October 2023● The Ground Segment of the EnMAP mission ● 1st EnMAP User Workshop DLR.DE    5• Under DLR responsibility and led by the Earth Observation Center (DFD and IMF institutes) and the German Space Operation Center (GSOC)• GSOC: Mission operations, generate and send telecommands, receive telemetry, flight dynamics, mission planning• DFD: Payload data reception, data processing, data archiving and user interfaces (Instrument Planning and EOWEB)• IMF: Processor development, in-flight calibration and quality control (processed data and instrument)ObservationsHow to registerUser RegistrationProposalEnMAP Instrument Planning Portalhttps://planning.enmap.org/Where users can register, submit proposals (necessary to task the instrument) and request future EnMAP acquisitions10 October 2023● The Ground Segment of the EnMAP mission ● 1st EnMAP User Workshop DLR.DE    6How to plan an EnMAP acquisitionEnMAP Instrument Planning Portalhttps://planning.enmap.org/Creating a request does not guarantee entering the satellite schedule. Tasking decision depends on cloud statistics and forecast, satellite restrictions (e.g. maneuvers), priority and quota and number of competing requests10 October 2023● The Ground Segment of the EnMAP mission ● 1st EnMAP User Workshop DLR.DE    7How to get archived EnMAP dataGerman Satellite Data Archivethrough EOWEBhttps://eoweb.dlr.de/egp/Where users can browse the EnMAPcatalogue and order the products.Products are processed on-demand,  according to different processing options of their choice like:• Processing level (L1B, L1C, L2A)• Map projection• Resampling options• L2A processing mode (land, water, combined)• Atmospheric correction parameters 10 October 2023● The Ground Segment of the EnMAP mission ● 1st EnMAP User Workshop DLR.DE    8Timeline10 October 2023● The Ground Segment of the EnMAP mission ● 1st EnMAP User Workshop DLR.DE    9Launch 01.04.2022 • 01.04.2022 EnMAP Launch• Start LEOP Phase until 14.04.2022• 15.04.2022 Start of commissioning Phase• 27.04.2022 First light916 kg3.1 m × 2.0 m × 1.7 m Source: SpaceXFirst light, 27.04.2022LEOP 01.04.2022 –15.04.2022 Commissioning 15.04.2022 – 01.11.2022Source: SpaceXTimeline• Start routine phase after successful FQR• Data requirements satisfied, except for VNIR-SWIR co-registration  (error ~0.7-0.8 pixel)• Request to improve image striping and mitigate effect of VNIR degradation10 October 2023● The Ground Segment of the EnMAP mission ● 1st EnMAP User Workshop DLR.DE    10Launch 01.04.2022Commissioning 15.04.2022 – 01.11.2022LEOP 01.04.2022 –15.04.2022Start Routine Phase 02.11.2023Commissioning dataL1B, Band 7Timeline• Start routine phase after successful FQR• Data requirements satisfied, except for VNIR-SWIR co-registration  (error ~0.7-0.8 pixel)• Request to improve image striping and mitigate effect of VNIR degradation• Failure occurred at the end of a Sun calibration on 13.12.2022. Two months outage to update on-board software10 October 2023● The Ground Segment of the EnMAP mission ● 1st EnMAP User Workshop DLR.DE    11Launch 01.04.2022Commissioning 15.04.2022 – 01.11.2022LEOP 01.04.2022 –15.04.2022Start Routine Phase 02.11.2023Outage 13.12.2022End of Outage13.02.2023Commissioning dataL1B, Band 7Timeline• Operations resumed on 13.02.2023. No consequences on mission functionality or data quality• Processor update V01.02.00 on 29.03.2023 with several improvements. Among them:• Improved VNIR-SWIR co-registration for newly archived products (<0.1 pixel)• De-striping algorithm• Dynamic calibration coefficient• VNIR degradation was reducing and by end of Q1 2023 had virtually disappeared10 October 2023● The Ground Segment of the EnMAP mission ● 1st EnMAP User Workshop DLR.DE    12Launch 01.04.2022LEOP 01.04.2022 –15.04.2022Start Routine Phase 02.11.2023Outage 13.12.2022 – 13.02.2023After29.03.2023L1B, Band 7, striping correctedProcessor V01.02.00Commissioning 15.04.2022 – 01.11.2022Timeline• Processor update V01.03.00 on 02.05.2023. Improved geometric accuracy along-track and other small improvements or bugfixes• 27.06.2023, start archive re-processing:• New versions > V01.03.00• Highly recommended for commissioning data• Update of SWIR band configuration on 05.07.2023• Processor V01.04.00 on 25.09.2023. Correction of L2A-water adjacency effect10 October 2023● The Ground Segment of the EnMAP mission ● 1st EnMAP User Workshop DLR.DE    13Launch 01.04.2022LEOP 01.04.2022 –15.04.2022Start Routine Phase 02.11.2023Outage 13.12.2022 – 13.02.2023Commissioning 15.04.2022 – 01.11.2022Processor V01.02.00Processor V01.03.00 Processor V01.04.00SWIR bandupdate, 05.07.2023Start reprocessing of archived data1st UserWorkshopEnMAP acquisitions10 October 2023● The Ground Segment of the EnMAP mission ● 1st EnMAP User Workshop DLR.DE    14~39000 Earth products archived by 30.09.2023Background Mission10 October 2023● The Ground Segment of the EnMAP mission ● 1st EnMAP User Workshop DLR.DE    15• The EnMAP Mission assigns high priority to user requests (priority 6 and 7 assigned to proposals)• Proposals that run out of quota get priority reduced• Time not used by user requests is assigned to background mission• BG mission acquisitions are typically longer but with lower priority than user requests, considering the input from the Science Team (list of targets)Background Mission 2022 + 2023Science Team targetsUser acquisitions• Typical user acquisitions are very small (1-3 tiles) and not geographically uniformly distributed. High demand over certain areas (e.g. Europe)• EnMAP needs ~3000 km (7 minutes) between acquisitions, making the short requests very inefficient• Only 1 order gets a slot in the instrument timeline over areas highly requested. High competition between orders• Short requests reduce the data volume acquired over the highly demanded areasUser requests 202310 October 2023● The Ground Segment of the EnMAP mission ● 1st EnMAP User Workshop DLR.DE    16User acquisitions• Typical user acquisitions are very small (1-3 tiles) and not geographically uniformly distributed. High demand over certain areas (e.g. Europe)• EnMAP needs ~3000 km (7 minutes) between acquisitions, making the short requests very inefficient• Only 1 order gets a slot in the instrument timeline over areas highly requested. High competition between orders• Short requests reduce the data volume acquired over the highly demanded areas• Background mission acquisitions are longer, but with lower priority and don’t compete with user requests• Temporary implemented “foreground mission” to take high priority long acquisitions over certain geographic areas• Longer-term changes are under evaluation at Mission levelUser requests 2023Backgroundmission 2023Foregroundmission 202310 October 2023● The Ground Segment of the EnMAP mission ● 1st EnMAP User Workshop DLR.DE    17Getting information and news: www.enmap.org• Main channel to get informed about mission status and news• Contains additional useful resources for the EnMAP Users10 October 2023● The Ground Segment of the EnMAP mission ● 1st EnMAP User Workshop DLR.DE    18Getting information and news: www.enmap.org• Main channel to get informed about mission status and news• Contains additional useful resources for the EnMAP Users• Mission Quarterly Reports• Mission Status and News• User and Data Statistics • Instrument calibration• Data Products quality10 October 2023● The Ground Segment of the EnMAP mission ● 1st EnMAP User Workshop DLR.DE    19Getting information and news: www.enmap.org• Main channel to get informed about mission status and news• Contains additional useful resources for the EnMAP Users• Mission Quarterly Reports• Mission Status and News• User and Data Statistics • Instrument calibration• Data Products quality• Ground tracks (KML files)10 October 2023● The Ground Segment of the EnMAP mission ● 1st EnMAP User Workshop DLR.DE    20Getting information and news: www.enmap.org• Main channel to get informed about mission status and news• Contains additional useful resources for the EnMAP Users• Example Data Products• 3 Scenes (Tyrol, Groningen and Nevada)• 3 processing levels for each scene (L1B, L1C, L2A)10 October 2023● The Ground Segment of the EnMAP mission ● 1st EnMAP User Workshop DLR.DE    21Getting information and news: www.enmap.org• Main channel to get informed about mission status and news• Contains additional useful resources for the EnMAP Users• Additional important notices published at IPS and EOWEB sites• https://planning.enmap.org/• https://eoweb.dlr.de/egp/10 October 2023● The Ground Segment of the EnMAP mission ● 1st EnMAP User Workshop DLR.DE    22Summary• Improvements in Ground Segment services / data quality, specially during 1st year• Check when data were acquired (performance may differ)• When possible use re-processed data• High demand of user acquisitions on certain geographic areas combined with minimum time between EnMAP acquisitions creates a queue of requests not fulfilled. Situation is very inefficient due to very short acquisitions with high priority. Adjustments are necessary to improve the situation for all users• Check www.enmap.org news feed and Mission Quarterly Reports to get latest status of the EnMAP Mission2310 October 2023● The Ground Segment of the EnMAP mission ● 1st EnMAP User WorkshopFunded byThank you !Extra10 October 2023● The Ground Segment of the EnMAP mission ●1st EnMAP User WorkshopDLR.DE    25• In-flight calibration observations are processed to generate updated calibration tables• Three level of users products can be ordered (L1B / L1C / L2A) from Earth observations. Dedicated L2A water processor (2 types of water products)• User products annotated with quality information (metadata) plus periodic quality and validation reports• Quality Control (GS) and Independent Validation (GFZ) performed on user products• EnMAP L2A data complaintwith CEOS CARD4L at threshold specificationProcessing chain and EnMAP Products10 October 2023● The Ground Segment of the EnMAP mission ● 1st EnMAP User Workshop DLR.DE    26EnMAP Acquisitions over time10 October 2023● The Ground Segment of the EnMAP mission ● 1st EnMAP User Workshop DLR.DE    27How bad is competition between user requests?• Example 24.06.2023 between 10:32:10 and 10:33:55 (105 seconds, ~750 km on ground) • Bottom graph shows 22 opportunities in the system. Only one can be acquired• From the 22 opportunities, 15 of them overlapping in 55 seconds• Moreover, the bottom graph also shows the size of users acquisitions (~4.5 seconds = 1 tile) which create Problem-2• 12 are 1-tile requests, 6 are 2-tiles requests, 2 are 3-tiles requestsMore examples of observation requests26 July 2023: 48 requests for 3 minutes time window 26 are 1 tile acquisitions29 July 2023: 55 requests for 7 minutes time window 36 are 1 tile acquisitions30 July 2023: 48 requests for 3 minutes time window 27 are 1 tile acquisitions01 August 2023: 17 requests for 7 minutes time window 6 are 1 tile acquisitionsGetting information and news: www.enmap.org• Main channel to get inform about mission status and news• Contains additional useful resources for the EnMAP Users• Portal User Manual• Algorithm Theoretical Baseline Documents• EnMAP L1B, L1C and L2A Product Specification10 October 2023● The Ground Segment of the EnMAP mission ● 1st EnMAP User Workshop DLR.DE    30In-Orbit ValidationDLR.de  •  Chart 31● The Ground Segment of the EnMAP mission ● 1st EnMAP User WorkshopRadiometric ValidationReflectance ValidationRadiometric StabilityGeometric PerformanceRequirementsRequirementsAbsolute geolocation VNIR  SWIR co-registration

The Ground Segment of the EnMAP Mission: from Tasking to Product Download

https://elib.dlr.de/199475/1/carmona_EnMAP-GS.pdf

The Ground Segment of the EnMAP Mission: from Tasking to Product Download

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