WHERE EARTH MEETS SIGNAL.
Site-Readiness for
Off-Grid RF.
Will the link close? Will the power last? FresnelPath answers both — before you mobilize. ITU-R propagation, GLO-30 terrain, and PVGIS solar viability, built for LoRaWAN today and extending to the wider LPWAN family as our customers ask.
30–40%
of IoT deployments require unplanned re-siting
2–5
field revisits eliminated per gateway
Weeks → Hours
planning time with physics-based analysis
The Deployment Team
One tool. Three working conditions.
Plan → Install → Launch.
Most RF tools stop at the desk. FresnelPath follows your team into the field — under the sun at 3,200 m and in the dark at a remote site.
RF Engineers & Network Planners
Model every ridge before touching a wrench. Six ITU-R propagation models, Fresnel zone clearance overlays, knife-edge diffraction, and full link budgets — at a desk, with maximum information density.
- 6 Propagation Models + 5-Method Diffraction
- Fresnel Zone Clearance · dBm Precision
- LoRaWAN SF/ADR Dimensioning
Field Installation Technicians
High-contrast sunlight-readable display with 2px borders and bold typography. Geomorphon terrain turns the map into a deployment guide — spur = mount point, peak = gateway candidate, hollow = dead zone.
- High-Contrast Sunlight-Readable Display
- Azimuth & Tilt Optimization
- Field Report Exports
Remote Ops & After-Hours Review
True-black UI for OLED screens — no glare, preserves dark adaptation at remote sites. A binary go/no-go verdict and a printable deployment brief for site handover and stakeholder review.
- True-Black OLED Display Mode
- Remote System Telemetry
- Deployment Brief PDF
BUILT FOR HARD TERRAIN
Designed for These Scenarios.
Built for where signals are hardest — mountain terrain, rough ground, remote sites.
Hydropower & Dam Safety
Continuous LoRaWAN telemetry for structural integrity monitoring in deep canyon topographies with complex diffraction requirements.
Eliminate wasted site visits · Confirm coverage before ordering hardware
Alpine Hydrology Networks
High-reliability microwave backhaul for remote mountain weather stations above 4,000 m — factoring in extreme multipath fading and knife-edge diffraction.
Plan a 20-node network in an afternoon, not a week
Remote Energy Monitoring
Solar and micro-hydro generation sites beyond the grid — validate LoRaWAN coverage and solar viability for SCADA telemetry before mobilizing a field crew at elevation.
Model the link · Confirm the margin · Deploy with confidence
The FresnelPath Advantage
Professional-grade RF planning,
at zero cost.
Advanced computational models designed for high-consequence wireless infrastructure. Built on ITU-R physics.
ITU-R Propagation Models
6 path models: FSPL, Okumura-Hata, COST-231, ITM, ITWOM 3.0 with P.2108-1 clutter, and full ITU-R P.1812-6 with gaseous absorption. Regional sweep via ITU-R P.1546-6.
5-Method Knife-Edge Diffraction
ITU-R P.526-15: single knife-edge, Bullington, Deygout, Epstein-Peterson. Auto-routes to the correct method based on obstacle count and terrain roughness.
GLO-30 3D Terrain
Copernicus 30 m DEM — 4× finer than SRTM, ~4 m vertical accuracy globally. MapLibre GL 3D terrain with pitch, exaggeration, hillshade, and contour overlays.
LoRaWAN Network Planning
SF7–SF12 ToA analysis, Aloha/Slotted-Aloha capacity, ADR simulation, channel plan with graph-coloring, and 5-step network dimensioning. 12 regional plans.
Asymmetric Link Budget
TalkOut / TalkBack Friis analysis. Configurable fade margin, P.840-8 snow/ice attenuation, 8-pattern antenna database with polar chart visualization.
Interference & Channel Planning
C/(I+N) ratio with multiple interferer aggregation, coordination distance calculator, and automatic channel assignment using greedy graph-coloring.
Solar & Power Viability
PVGIS irradiance + battery SoC simulation for off-grid sensor nodes. Validate that the site has enough sun-hours before ordering panels — including seasonal worst-case and cloudy-day autonomy.
Coverage Intelligence
Multi-gateway coverage heatmaps with best-server selection, P.1546-6 regional sweeps, and viewshed analysis. Identify dead zones and optimize gateway placement before a single pole is installed.
Regulator-Ready Reports
PDF path profiles, link budgets, and equipment snapshots with ITU-R model citations. Structured for submission to national telecoms regulators — frequency coordination, site approval, and compliance documentation.
Real ITU-R Reference Engines
Wraps the published Py1812 ITU reference code and itmlogic ITM v1.2.2 — not a re-implementation.
Copernicus GLO-30 Elevation
30 m resolution terrain data — same dataset used by the European Space Agency for global DEM products.
Tested to 4,000 m ASL
Developed and validated in Central Asian mountain terrain — including deployments above 4,000 m.
Common Questions
Questions from project teams
Do I need to be an RF engineer to use this?
No. Enter two coordinates, select a radio standard, and FresnelPath returns a go/no-go result with a link margin in plain numbers. Engineers on your team can go deeper into the propagation models when they need to.
How accurate is the terrain data?
FresnelPath uses the Copernicus GLO-30 dataset at 30 m spatial resolution — four times finer than the widely used SRTM, with approximately 4 m vertical accuracy globally. For mountainous terrain, this is the highest-quality freely available elevation source.
What radios and regions does it support?
LoRaWAN across 12 regional frequency plans including EU868, US915, and RU864. For point-to-point backhaul, the tool supports link analysis at any frequency — microwave, UHF, or custom bands.
Can my team use it in the field without an internet connection?
Currently FresnelPath requires a connection to fetch terrain tiles and run propagation calculations. Offline field mode is planned for the Pro tier — register your interest using the Early Access form in Pricing.
Do I need an account to use FresnelPath?
The core planning tool (path profile, link budget, LoRaWAN analysis, coverage heatmaps) is completely free with no account required. Some collaboration features — saving projects, sharing links, and export to PDF — require a free registration.
Can I export this for a regulator submission?
Yes. FresnelPath generates PDF path profile reports and link budgets that include the ITU-R model name, input parameters, path loss breakdown, and link margin — the core elements most telecoms regulators require for frequency coordination and site approval. The Regulatory Matrix (roadmap v2.2) will add country-specific submission templates.
How do you handle atmospheric ducting and tropospheric refraction?
The ITU-R P.1812-6 model accounts for tropospheric refraction through the effective Earth radius factor (k = 4/3 standard) and includes time-variability statistics for the planned location. Gaseous absorption from O₂ and H₂O is computed per ITU-R P.676-12 for all path lengths.
What other LPWAN technologies do you support beyond LoRaWAN?
LoRaWAN has the deepest planning suite today — 12 regional plans, SF/ADR analysis, and full ToA capacity modeling. The propagation and terrain engine already works at any frequency, so NB-IoT, LTE-M, Wi-Fi HaLow, and satellite IoT link analysis are on the roadmap as customers ask for them. Register early access in the Pricing section if you need these now.
Is the source code open?
FresnelPath is open to use — the hosted version is free with no account required for core analysis. The propagation backend is licensed CC-NC (non-commercial). Commercial licensing is available for Pro customers who need it for paid engagements.
⚠ Pricing subject to change
Platform Tiers
Start free. Scale when you need to.
Community
OPEN TO USE- check All ITU-R propagation models & diffraction
- check Path profile · link budget · Fresnel zone analysis
- check Full LoRaWAN planning suite (12 regions)
- check GLO-30 30 m terrain tiles — any region
- check Cloud-hosted — no installation required
Pro (Hosted)
- check Everything in Community
- check Private Enterprise Clusters & Team Workspaces
- check Large-Scale Coverage Heatmaps
- check API Access for GIS Integration
- check Offline Field Mode (planned)
Register interest — we'll notify you when Pro launches:
PRODUCT FEEDBACK & IDEAS
Talk to me about FresnelPath
Feature ideas, edge cases, bugs, missing regulatory data — I want to hear them. The goal is for you to be satisfied with the product itself.
Feature ideas & feedback
New analysis flows, UI improvements, missing model parameters
Custom regulatory matrix
Country-specific frequency plans, power limits, and submission templates
Training for your team
RF fundamentals, LoRaWAN dimensioning, and ITU-R model interpretation
FresnelPath does not sell RF consulting or on-prem deployment services.