# `Sidereon.Estimation.TrackRtsHistoryBuilder`
[🔗](https://github.com/neilberkman/sidereon-ex/blob/main/lib/sidereon/estimation.ex#L382)

Builder for a forward track-filter pass that can be RTS-smoothed.

# `t`

```elixir
@type t() :: %Sidereon.Estimation.TrackRtsHistoryBuilder{handle: reference()}
```

# `finish`

```elixir
@spec finish(t()) :: {:ok, Sidereon.Estimation.TrackRtsHistory.t()} | {:error, term()}
```

Finish the builder and return a smoothing-ready history.

# `from_filter`

```elixir
@spec from_filter(Sidereon.Estimation.TrackFilter.t()) ::
  {:ok, t()} | {:error, term()}
```

Start a history builder from the current filter state.

# `new`

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

Start an empty history builder.

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