# `Sidereon.GNSS.Fusion.TightRangeRateObservation`
[🔗](https://github.com/neilberkman/sidereon-ex/blob/main/lib/sidereon/gnss/fusion.ex#L151)

Doppler-derived range-rate row for one satellite in a tight update.

# `t`

```elixir
@type t() :: %Sidereon.GNSS.Fusion.TightRangeRateObservation{
  measured_range_rate_m_s: number(),
  satellite_clock_drift_m_s: number(),
  sigma_m_s: number()
}
```

# `new`

```elixir
@spec new(number(), number(), number()) :: t()
```

Build a tight range-rate observation row.

---

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