Enum MotifClass 

pub enum MotifClass {
    PreFailureSlowDrift,
    TransientExcursion,
    RecurrentBoundaryApproach,
    AbruptOnset,
    SpectralMaskApproach,
    PhaseNoiseExcursion,
    FreqHopTransition,
    Unknown,
    LnaGainInstability,
    LoInstabilityPrecursor,
}

Named temporal motif class.

The syntax layer maps (sign_tuple, grammar_state) → MotifClass. This is the input to the heuristics bank lookup.

Variants

PreFailureSlowDrift

Persistent positive ṙ while norm approaches ρ. Primary pre-transition precursor motif.

TransientExcursion

Brief norm spike above ρ with rapid recovery (< 2 observations).

RecurrentBoundaryApproach

Repeated near-boundary excursions in a rolling window.

AbruptOnset

Abrupt large slew: |r̈| > δ_abrupt. Consistent with jamming onset or hardware fault.

SpectralMaskApproach

Monotone outward drift toward normalized mask boundary (norm → 1.0).

PhaseNoiseExcursion

Oscillatory ṙ with growing amplitude. Consistent with phase noise or oscillator aging.

FreqHopTransition

Abrupt slew followed by rapid stabilization at a new norm baseline. Consistent with FHSS waveform transition (should be suppressed by platform context).

Unknown

No motif pattern matched. Endoductive regime. Operator receives the full σ(k) trajectory; DSFB returns semantic Unknown.

LnaGainInstability

Monotone linear norm increase with near-zero second derivative. Signature: ṙ > threshold, |r̈| ≈ 0 (constant-rate gain ramp). RF context: LNA thermal runaway, progressive gain collapse. Structurally distinct from PreFailureSlowDrift: the gain ramp is linear (no acceleration) and starts below 30% ρ.

LoInstabilityPrecursor

Recurrent boundary grazing with oscillatory slew pattern. Signature: RecurrentBoundaryGrazing reason code AND |r̈| > 0. RF context: LO phase noise excursion, oscillator aging or vibration. Carries an Allan-deviation instability character distinguishable from RecurrentBoundaryApproach (which has no oscillatory slew).

Trait Implementations

impl Clone for MotifClass

fn clone(&self) -> MotifClass

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for MotifClass

impl Debug for MotifClass

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for MotifClass

impl PartialEq for MotifClass

fn eq(&self, other: &MotifClass) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for MotifClass