Continuous visibility between field visits.
IDRCIN is for places where repeated ground access is expensive, disruptive, or scientifically limiting. The observatory combines distributed fibre sensing, endpoint sensing, drone mapping, and terrain reconstruction into one coherent research layer.
Minimum Necessary Presence
Observe more while entering the forest less often.
Canopy-to-Terrain Context
Link canopy behaviour with terrain, slope, drainage and temporal change.
Research Question First
Technology selection follows the observation need, not the other way around.
One drone-laid ultra-light canopy corridor.
The approved physical architecture is a single ultra-light cable containing approximately 5–6 optical fibres, primarily laid over the canopy, with no intermediate electronic nodes, no intermediate DAQ, and no repeaters unless future validation explicitly requires them.
Three operational modes, one platform.
Sets A/B/C describe where the terminal sensing lives and how much human involvement the endpoint requires. They are deployment modes, not different brands or different websites.
Set A · Canopy Observation
Main cable remains canopy-laid. Terminal sensing stays canopy-focused. Best for distributed canopy microclimate, DTS and DAS research.
Set B · Autonomous Canopy-to-Ground Drop
Canopy cable remains primary, but the terminal section drops vertically to ground. For forest-floor and interface research where autonomous deployment and retrieval are validated.
Set C · Human-Assisted Precision Endpoint
Drone still lays the corridor, but a researcher is present only at the endpoint for calibration, precision placement and reference sensing.
Reconnaissance, lay, validate, observe, retrieve.
Every observatory run follows the same scientific sequence: survey, route planning, cable lay, chainage registration, sensing, QA/QC, temporal comparison, and retrieval when the campaign ends.
LiDAR, RGB, route candidate detection and validation windows.
Drone lays the ultra-light fibre corridor along the canopy.
Set A, B or C activates distributed or endpoint sensing.
Camp complete; corridor is inspected, recovered and redeployed elsewhere.
Distributed fibre sensing and endpoint sensing are not the same thing.
DTS and DAS are core distributed optical sensing functions. Endpoint sensors are separate devices that sit at the terminal site. The observatory must never imply all sensing modes can coexist without compatible hardware.
Distributed Temperature Sensing (DTS)
Observe thermal response along the cable chainage. Exposed canopy fibre may reflect solar load, shade, wind and rain, so raw readings are not automatically ambient air temperature.
Distributed Acoustic / Vibration Sensing (DAS)
Observe canopy sway, branch impacts, storm response and disturbance candidates. Performance depends strongly on mechanical coupling.
Chainage turns fibre into a map.
Distributed readings must be georeferenced back to the route so researchers can interpret chainage, elevation, slope, aspect and canopy context instead of treating the corridor as an anonymous line.
UAV data becomes DSM, DTM and CHM.
LiDAR and photogrammetry support computational terrain and canopy reconstruction. Dense tropical canopy may limit ground returns, so the Digital Terrain Model must be treated as a derived product with explicit bounds.
DSM
Digital Surface Model from canopy and surface returns.
DTM
Digital Terrain Model from filtered ground returns where available.
CHM
Canopy Height Model derived from DSM minus DTM.
One platform, three research positions.
Set A is canopy-centric, Set B introduces autonomous canopy-to-ground terminal deployment, and Set C adds human-assisted precision at the endpoint for calibration and reference work.
| Capability | Set A | Set B | Set C |
|---|---|---|---|
| Main cable above canopy | Yes | Yes | Yes |
| Drone deployment | Yes | Yes | Yes |
| Human at endpoint | No | No | Yes |
| Ground sensing | No | Yes | Yes |
| Autonomous retrieval | High | Target | Human-assisted |
| Precision placement | Low | Moderate | High |
| Calibration role | Medium | Medium | High |
| Deployment complexity | Low | Medium/High | Medium |
1 cable × 6 optical fibres.
One ultra-light physical cable contains six optical fibres. F1 and F2 are distributed sensing paths; F3 to F5 are configurable endpoint channels; F6 is spare, redundancy or experimental capacity.
F1 baseline
Distributed Temperature Sensing (DTS) along the full corridor. The fibre itself is the sensing medium; raw temperature interpretation requires calibration and context.
Tap each fibre to show its role in the observatory architecture.
~40 classes support 60 studies.
Sensor count does not equal study count. Many studies are direct fibre measurements, others are endpoint measurements, derived variables or sensor-fusion products.
Fibre-based
- DTS interrogator
- DAS interrogator
- DSS / strain interrogator
Canopy / atmospheric
- Temperature / RH sensor
- PAR sensor
- Solar irradiance sensor
- UV sensor
- Pressure sensor
- IMU / accelerometer
- Acoustic recorder
- Wind sensor
- Rainfall sensor
- Leaf-wetness sensor
Soil / water / tree
- Soil-moisture probe
- Soil-temperature probe
- EC / pH / ORP / oxygen probes
- Soil CO₂ & respiration instruments
- Groundwater / water-level sensors
- Flow / turbidity / DO / TDS sensors
- Sap-flow / dendrometer / inclinometer
More useful than a flat sensor list.
Researchers often need derived variables and connected datasets, not isolated sensor names.
From distributed fibre observations to terrain intelligence.
Each programme maps to a deployment set, measurement source, fibre/channel where relevant, direct or derived data, maturity, and a short limitation note.
| Coverage | Value |
|---|---|
| 60 defined research programmes | 1 cable × 6 optical fibres |
| Deployment sets | Set A, Set B, Set C |
| Potential corridors | 100 observation corridors |
| Instrument classes | ~40 classes |
What researchers can obtain continuously.
Deliverables should remain grounded in real capture modes: distributed chainage data, georeferenced terrain products, temporal change records and validated sensor streams. Explore 60 research programmes in the observatory catalogue.
Distributed data
Temperature vs chainage, vibration vs chainage, and event streams over time.
Spatial data
Orthomosaic, point cloud, DSM, DTM, CHM, canopy gap map, slope and aspect.
Temporal data
Seasonal trends, before/after maps, disturbance history and long-term environmental change.
Observed science must stay honest about uncertainty.
Raw data remains immutable. AI interprets; it does not rewrite raw scientific measurements. Every fusion product must retain provenance and the limits of the capture method.
Established technology
DTS, DAS, UAV LiDAR and photogrammetry are established techniques. IDRCIN integrates them in a new deployment system.
Pilot validation required
Ultra-light canopy corridor deployment, autonomous retrieval, canopy DAS coupling and long-duration survivability need field validation.
Canopy occlusion
Dense canopy may reduce ground returns and complicate DTM accuracy.
Georeferencing drift
Chainage must be tied to GNSS/RTK and survey control where available.
Weather windows
Wind, rain and access constraints affect deployment, sensing and retrieval.