Systematic EO data Data Ingestion and Processing Frequencies – May 2025 Reference Patterns¶
These time-based definitions are derived from actual data availability patterns observed in May 2025 for products such as Sentinel-1 (SAR), Sentinel-2 (Optical), HLSL30 (Harmonized Landsat-Sentinel), and Sentinel-3 (Thermal and Atmospheric). The system is designed to trigger multiple data ingestion and processing rounds per day, depending on the satellite’s acquisition frequency and revisit characteristics. This approach:
- Ensures efficient use of system resources
- Supports timely catalog availability
- Enables automated workflows to rapidly act on new data
The information aligns with the Hub’s reference implementation and will be further improved in the fully operational environment.
Ingestion & Processing Frequencies Table¶
| Satellite / Product | Sensor Type | Data UID | Daily Frequency & Trigger Intervals | Freq min (Intervals) | Initial Ingestion Timeline (Estimated min) | (ARD) Processing Timeline (min) |
|---|---|---|---|---|---|---|
| Sentinel-1 GRD | SAR | ARD_S1 | 30 min (04:00–08:00) 30 min (16:30–20:00) |
~5 | ~30 | ~30 |
| Sentinel-1 SLC | SAR | — | 30 min (04:00–08:00) 30 min (16:30–20:00) |
~10 | — | — |
| Sentinel-2 L2A | Optical | ARD_S2 | 5 min (02:00–03:30) 5 min (10:30–19:30) |
~5 | ~10 | ~10 |
| Sentinel-2 L1C | Optical | — | 5 min (02:00–03:30) 5 min (10:30–19:30) |
~5 | — | — |
| HLSL30 | Optical | ARD_L8L9 | 30 min (00:00–02:00) 60 min (06:00–08:00) 60 min (12:00–14:00) 60 min (16:00–21:00) |
~5 | ~5 | ~5 |
| S3 SLSTR (Surface Temp.) | Thermal / Other | ARD_S3 | 240 min (00:00–04:00) 120 min (04:00–06:00) ... till 24:00 |
~3 | ~5 | ~5 |
| S3 AOD (Aerosol Optical) | Atmospheric | S3AOD | — | ~2 | ~5 | ~5 |
📊 Trigger Intervals Overview¶
The following chart visually represents the trigger intervals and frequency across the full 24-hour timeline for each satellite/product.
Note:
All ingestion and processing time estimations presented in this section are based on simulations and measurements carried out in a reference implementation environment equipped with a professional workstation (58 GB RAM & 18 CPUs) and a medium-to-high-speed internet connection (~100 Mbps).Actual performance in the final operational system may vary due to: - Network bandwidth
- Processing concurrency
- Storage I/O speed
- Infrastructure-specific parametersThese values are indicative and serve as a baseline for system behavior and latency analysis. They do not represent hard performance guarantees.
Systematic Thematic Services¶
https://planetek.sharepoint.com/:x:/r/Shared%20Documents/Progetti/progetti_h/P24E2841_AXIS_3_GOVERNMENTAL_HUB/01_Management/04_Deliverables/Technical%20Notes/Services%20_%20Schedulling.xlsx?d=wf459c0c6c1f34b4998467dc001da9bc8&csf=1&web=1&e=AKpzKq
On-Demand and Event Based Thematic Services¶
On-Demand and Event Based Thematic Services¶
The analysis of On-Demand and Event-Based Thematic Services reveals the flexibility and responsiveness of the AXIS 3 Governmental Hub in meeting various monitoring and assessment needs across multiple sectors.
In the Water Services sector, several products, such as oil spills and maritime vessel monitoring, are triggered by events or are available on-demand, demonstrating the Hub's ability to respond rapidly to incidents like environmental disasters or maritime activities.
Water Services¶
| Service | Product | Trigger Type |
|---|---|---|
| Inland/Coastal 5m muddy waters | WS-WQ-BE-BD | Triggered by Event or On-demand/Ad-hoc |
| Inland 5m oil spills (triggered) | WS-WQ-IE-BT | Triggered by Event or On-demand/Ad-hoc |
| Maritime vessels 1m (triggered) | WS-MS-MV-1T | Triggered by Event or On-demand/Ad-hoc |
| Maritime vessels 3m (triggered) | WS-MS-MV-3T | Triggered by Event or On-demand/Ad-hoc |
| Aquaculture infrastructure 1m (triggered) | WS-MS-MI-1T | Triggered by Event or On-demand/Ad-hoc |
| Aquaculture infrastructure 3m (triggered) | WS-MS-MI-3T | Triggered by Event or On-demand/Ad-hoc |
| Marine debris (triggered) | WS-MS-MD-BT | Triggered by Event or On-demand/Ad-hoc |
| Oil spills (triggered) | WS-MS-MS-BT | Triggered by Event or On-demand/Ad-hoc |
Note: For the listed water services, it is necessary to clarify whether they are triggered automatically by specific events (e.g., detection of oil spills, marine debris, or maritime vessel presence) or whether they are available on-demand ad hoc, where a user can initiate the service at any given time. The distinction between event-triggered services and on-demand services should be confirmed to ensure accurate operational procedures and user expectations.
Similarly, the Agricultural Monitoring sector features a variety of products—ranging from backscatter calculations to crop growth estimations—that are triggered by events, supporting timely agricultural assessments and interventions.
Agricultural Monitoring¶
| Service | Product | Trigger Type |
|---|---|---|
| Backscatter calculations | AG-SM-BSC-S1 | Triggered by Event |
| NDVI extraction | AG-SM-NDVI-S2 | Triggered by Event |
| Soil Backscatter Coefficient | AG-SM-SBC-S2S1 | Triggered by Event |
| Soil Moisture Estimation | AG-SM-SME-00 | Triggered by Event |
| LAI estimation | AG-CG-LAI-AB | Triggered by Event |
| CCC estimation | AG-CG-CCC-AB | Triggered by Event |
| CDMC estimation | AG-CG-CDMC-AB | Triggered by Event |
| Crop Growth Estimation | AG-CG-CGE-00 |
In the Forest Service, the combination of on-demand services like forest type maps and bi-annual updates for biodiversity indices and health trends highlights the need for both frequent and periodic updates, with the system being adaptable to the dynamic requirements of forest monitoring.
Forest Service¶
| Service | Product | Trigger Type |
|---|---|---|
| Forest Types Maps (5m) | FS-FM-FC-B | On-demand |
| Health trends (5m, on-demand) | FS-HA-HT-B-A2 | On-demand |
| Threat monitoring (5m, on-demand) | FS-TM-TM-B-A2 | On-demand |
The Land Service sector takes an ad-hoc approach, with products like PSI displacement maps and landslide tracking available as needed, enabling precise monitoring of land movements and natural hazards.
Land Service¶
| Service | Product | Trigger Type |
|---|---|---|
| PSI displacement maps (10m) | LS-DF-PS-S1 | Ad-hoc |
| SBAS displacement maps (60m) | LS-DF-SB-S1 | Ad-hoc |
| Co-seismic InSAR (10m) | LS-DF-IT-S1 | Ad-hoc |
| Landslide tracking (10m) | LS-DF-LS-00 | Ad-hoc |
Finally, the Safety and Security sector offers a diverse range of on-demand and event-triggered services, including flood delineation, burn scar mapping, and fire severity mapping. These services allow for immediate analysis following environmental events or ongoing monitoring of disaster zones. The integration of target identification and tracking services further enhances the ability to respond quickly to security and emergency situations.
Safety and Security¶
| Service | Product | Trigger Type |
|---|---|---|
| Flood delineation (2015–2024) | SS-FR-FD-A | On-demand |
| Flood delineation (2024+) | SS-FR-FD-B | On-demand |
| Burn Scar Mapping | SS-WS-BS | On-demand / Trigger by event (Active fire) |
| Fire Severity Mapping | SS-WS-FS | Trigger by event (Active fire) |
| Restoration Monitoring | SS-WS-RR | Trigger by event (Active fire) |
| Fire Spread Prediction | SS-WS-PFS | On-demand |
| Target Identification | SS-TI-TI | On-demand |
| Target Tracking | SS-TI-TT | On-demand |