# Common Types

Configuration, observation, and record types used by the estimation filters.

---

::: brahe.Observation
    options:
      show_root_heading: true
      show_root_full_path: false

---

::: brahe.FilterRecord
    options:
      show_root_heading: true
      show_root_full_path: false

---

::: brahe.EKFConfig
    options:
      show_root_heading: true
      show_root_full_path: false

---

::: brahe.ProcessNoiseConfig
    options:
      show_root_heading: true
      show_root_full_path: false

---

::: brahe.MeasurementModel
    options:
      show_root_heading: true
      show_root_full_path: false

## See Also

- [Estimation Guide](../../learn/estimation/index.md) - Concepts and workflows
- [Custom Models Guide](../../learn/estimation/custom_models.md) - Implementing MeasurementModel in Python