API

Link Budget API

Integrate HAPS RF calculations directly into your workflow. RESTful endpoints for free-space path loss, atmospheric absorption, rain attenuation, and complete link budgets — all ITU-R compliant.

  • Link budget, coverage & SINR endpoints under /v1/
  • JSON responses: point results & coverage grids
  • S, Ka, Q, V band support (2–75 GHz)
  • Sub-second response times
  • Standards-traceable calculations
Simulator

NTN Simulator

Validate your HAPS network design against 3GPP specifications. Time-stepping simulation with Doppler modeling, A3 event handover, and HARQ feedback loops.

  • Monte Carlo statistical analysis
  • Multi-beam antenna modeling
  • 3GPP TR 38.811/38.821/38.822 compliant
  • KPI reporting: RSSI, SNR, handover rate, Doppler
  • Configurable simulation parameters
See a real POST /v1/calculate-link response
# request
{
  "frequency_ghz": 28.0,
  "haps_altitude_km": 20.0,
  "elevation_deg": 40.0,
  "tx_power_dbm": 33.0,
  "tx_gain_dbi": 22.0,
  "rx_gain_dbi": 12.0,
  "rain_rate": 5.0,
  "cloud_type": "Clear Sky",
  "sensitivity_dbm": -100.0
}

# 200 OK
{
  "calculation_id": "3f8a1c9e4b2d4e6f9a0b1c2d3e4f5a6b",
  "distance_km": 31.11,
  "fspl_db": 151.25,
  "gas_loss_db": 1.35,
  "rain_loss_db": 3.73,
  "cloud_loss_db": 0.0,
  "total_losses_db": 156.34,
  "rssi_dbm": -89.34,
  "margin_db": 10.66,
  "is_link_up": true
}