---
title: "Scintillation Analysis"
method: POST
path: "/api/v1/cross-physics/helium-starlink/scintillation"
tags: ["Helium-Starlink Coupling"]
---

# Scintillation Analysis

`POST /api/v1/cross-physics/helium-starlink/scintillation`

## Request

- Base URL: `https://www.deepmapai.com`
- URL: `https://www.deepmapai.com/api/v1/cross-physics/helium-starlink/scintillation`
- Auth: none declared

Ionospheric scintillation analysis at 915 MHz.

Estimates S4 scintillation index at Helium LoRaWAN frequency
using Starlink-derived thermospheric density and NOAA Kp index.
Higher S4 values indicate stronger amplitude fading on the
ground RF link.

Physics:
    S4_915 = 0.8 * (rho/rho_quiet)^0.6 * (Kp/9)^1.2

Severity thresholds:
    low      S4 < 0.2
    moderate 0.2 <= S4 < 0.4
    high     0.4 <= S4 < 0.6
    severe   S4 >= 0.6

**Pricing:** Included in subscription tiers (legacy list price: GET /api/v1/billing/pricing).

## Query parameters

- `x_api_key` string, nullable

## Request body

- HSCAnalysisRequest: Request body for Helium-Starlink coupling analysis endpoints.
  - `lat` number, required: Latitude in decimal degrees (WGS84)
  - `lon` number, required: Longitude in decimal degrees (WGS84)
  - `radius_km` number: Analysis radius in kilometres (default 50)
  - `include_training` boolean: If True, trigger model retraining with latest data

## Response `200`

Successful Response

- unknown

## Other responses

- `422`: Validation Error

---

[API](https://skmtc.dev/deepmapai/apis/deepmap-ai.md) · [All operations](https://skmtc.dev/deepmapai/apis/deepmap-ai/llms.txt) · [OpenAPI document](https://skmtc.dev/deepmapai/apis/deepmap-ai/revisions/dab995d977d0?raw)