Struct AllanVarianceModel 

pub struct AllanVarianceModel {
    pub h_white: f32,
    pub h_flicker: f32,
    pub h_rw: f32,
    pub label_str: &'static str,
}

Allan variance frequency-stability model for oscillator aging.

σ_y²(τ) = h₀/(2τ) + h₋₁·2·ln2 + h₋₂·(2π²/3)·τ

Pre-defined Constants

• OCXO_CLASS_A: Ultra-stable oven-controlled XO (h₀=1e-20, h₋₁=1e-22, h₋₂=1e-28)
• TCXO_GRADE_B: Temperature-compensated XO (h₀=1e-18, h₋₁=1e-20, h₋₂=1e-26)

Fields

h_white: f32

White phase noise coefficient h₀.

h_flicker: f32

Flicker phase noise coefficient h₋₁.

h_rw: f32

Random walk FM noise coefficient h₋₂.

label_str: &'static str

Human-readable identifier.

Implementations

impl AllanVarianceModel

pub const OCXO_CLASS_A: Self

Ultra-stable OCXO Class A oscillator (normalised residual-norm units).

h-coefficients scaled so σ_y(τ=1) ≈ 2.2×10⁻⁵ (detectable in f32).

pub const TCXO_GRADE_B: Self

GPS-grade TCXO Grade B oscillator (normalised residual-norm units).

h-coefficients scaled so σ_y(τ=1) ≈ 2.2×10⁻⁴ (100× worse than OCXO).

Trait Implementations

impl Clone for AllanVarianceModel

fn clone(&self) -> AllanVarianceModel

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for AllanVarianceModel

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

Formats the value using the given formatter.

impl PhysicsModel for AllanVarianceModel

fn predict_drift_rate(&self, tau: f32) -> f32

Averaging time τ [s] → Allan deviation σ_y(τ) = √AVAR(τ).

fn label(&self) -> &'static str

Short human-readable label for this model instance.

fn reference(&self) -> &'static str

Primary literature reference for the model.

fn maps_to_reason(&self) -> ReasonCode

The DSFB ReasonCode this model most directly corresponds to.

impl Copy for AllanVarianceModel