> ## Documentation Index
> Fetch the complete documentation index at: https://docs.axiomancer.io/llms.txt
> Use this file to discover all available pages before exploring further.

# SAR Satellite

> Check Sentinel-1 radar satellite imagery coverage for dark fleet verification — query upcoming overpasses, archive coverage, and tip-and-cue requests.

Check Sentinel-1 radar satellite imagery coverage for dark fleet verification.

## `GET` `/api/v1/sar-coverage`

<Note>Requires API key.</Note>

Query Copernicus Sentinel-1 SAR catalog to check if radar imagery exists near a location and time. Used to verify dark fleet events.

**Parameters**

| Name     | Type   | Required | Description                      |
| -------- | ------ | -------- | -------------------------------- |
| `lat`    | number | ✓        | Latitude                         |
| `lng`    | number | ✓        | Longitude                        |
| `date`   | string |          | ISO date (default: now)          |
| `radius` | number |          | Search radius in km (default 50) |

**Response**

```json theme={null}
{ "has_coverage", "products": [{ "name", "start", "size_mb" }], "closest_pass_hours", "verification_potential": "high|medium|low|none" }
```

**Example**

```bash theme={null}
curl -X GET -H "X-API-Key: YOUR_KEY" \
  https://axiomoverwatch.io/api/v1/sar-coverage?lat=VALUE&lng=VALUE
```