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pageClass: is-wide-page
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# OpenDroneIdSystem (UORB message)

**TOPICS:** open_drone_id_system

## Fields

| Name                   | Type        | Unit [Frame] | Range/Enum | Description |
| ---------------------- | ----------- | ------------ | ---------- | ----------- |
| timestamp              | `uint64`    |              |            |
| id_or_mac              | `uint8[20]` |              |            |
| operator_location_type | `uint8`     |              |            |
| classification_type    | `uint8`     |              |            |
| operator_latitude      | `int32`     |              |            |
| operator_longitude     | `int32`     |              |            |
| area_count             | `uint16`    |              |            |
| area_radius            | `uint16`    |              |            |
| area_ceiling           | `float32`   |              |            |
| area_floor             | `float32`   |              |            |
| category_eu            | `uint8`     |              |            |
| class_eu               | `uint8`     |              |            |
| operator_altitude_geo  | `float32`   |              |            |

## Source Message

[Source file (GitHub)](https://github.com/PX4/PX4-Autopilot/blob/main/msg/OpenDroneIdSystem.msg)

::: details Click here to see original file

```c
uint64 timestamp
uint8[20] id_or_mac
uint8 operator_location_type
uint8 classification_type
int32 operator_latitude
int32 operator_longitude
uint16 area_count
uint16 area_radius
float32 area_ceiling
float32 area_floor
uint8 category_eu
uint8 class_eu
float32 operator_altitude_geo
```

:::