# `Sidereon.GNSS.Fusion.GnssFixMeasurement`
[🔗](https://github.com/neilberkman/sidereon-ex/blob/main/lib/sidereon/gnss/fusion.ex#L80)

GNSS PVT measurement used by loose-coupled fusion updates.

# `t`

```elixir
@type t() :: %Sidereon.GNSS.Fusion.GnssFixMeasurement{
  covariance: [[number()]],
  fix_status: :single | :float | :fixed | String.t(),
  position_ecef_m: Sidereon.GNSS.Fusion.vec3(),
  satellites_used: non_neg_integer(),
  solution_valid: boolean(),
  t_j2000_s: number(),
  velocity_ecef_mps: Sidereon.GNSS.Fusion.vec3() | nil
}
```

# `position`

```elixir
@spec position(
  number(),
  Sidereon.GNSS.Fusion.vec3(),
  [[number()]],
  non_neg_integer(),
  keyword()
) :: t()
```

Build a position-only GNSS fix measurement.

# `position_velocity`

```elixir
@spec position_velocity(
  number(),
  Sidereon.GNSS.Fusion.vec3(),
  Sidereon.GNSS.Fusion.vec3(),
  [[number()]],
  non_neg_integer(),
  keyword()
) :: t()
```

Build a position-velocity GNSS fix measurement.

# `with_fix_status`

```elixir
@spec with_fix_status(t(), :single | :float | :fixed | String.t()) :: t()
```

Return the measurement with a different GNSS fix status.

---

*Consult [api-reference.md](api-reference.md) for complete listing*