Module estimation 

GNSS estimation substrate (Phase-2).

The Phase-2 redesign collapses the three thick estimator stacks (spp, rtk/rtk_filter, precise_positioning) onto one shared estimation substrate plus thin, runtime-selectable strategies. The mechanism that keeps every external reference bit-exact through the migration is the NAMED recipe: a strategy selects the floating-point operation order it needs by enum value, never by owning a private copy of a parity-sensitive helper.

P0 landed recipe - the taxonomy of operation-order variants, each documented against the current code path it names and defaulting to current behavior. P1 adds [substrate] with the frame and range kernels; P2 adds the parameter layout, the weighted measurement row, the measurement covariance block, and the normal-equation assembler; P3 adds the shared ambiguity and qc kernels, all routed through by the existing strategies via their current recipe. P4 adds strategies: the runtime StrategyId selector (strategies::estimate) that resolves a strategy into its recipe and screen/ambiguity policy data and dispatches to the technique’s reference entry point, leaving every existing 0-ULP golden unchanged.

Re-exports

pub use recipe::AmbiguityIdPolicy;

pub use recipe::DifferencingMode;

pub use recipe::EstimationRecipe;

pub use recipe::FrameRecipe;

pub use recipe::NormalRecipe;

pub use recipe::PartialResolution;

pub use recipe::RangeRecipe;

pub use recipe::ReferenceTarget;

pub use recipe::ResidualNormRecipe;

pub use recipe::SagnacRecipe;

pub use recipe::ScreenKind;

pub use recipe::SolverRecipe;

pub use recipe::StrategyId;

pub use recipe::Technique;

pub use strategies::estimate;

pub use strategies::EstimateError;

pub use strategies::EstimateInput;

pub use strategies::EstimateOptions;

pub use strategies::EstimateOutput;

pub use strategies::ResolvedStrategy;

Modules

recipe

Named operation-order recipes for the GNSS estimation substrate.

strategies

Runtime-selectable estimation strategies (Phase-2 P4, driving in 2b).