Enum GnssScheduler 

pub enum GnssScheduler {
    PassThrough,
    FixedInterval {
        interval_s: f64,
        phase_s: f64,
    },
    DutyCycle {
        on_s: f64,
        off_s: f64,
        start_phase_s: f64,
    },
}

Scheduler for controlling when GNSS measurements are emitted into the simulation.

This models denial- or jamming-like effects that reduce the rate of available GNSS updates, independent of their content (which is handled by GnssFaultModel).

By separating scheduling from corruption, you can experiment with outages, degraded update rates, or duty-cycled availability while keeping the measurement noise model orthogonal.

Usage

• PassThrough → GNSS data is delivered at its native logging rate.
• FixedInterval → Downsample the GNSS stream to a constant interval, simulating jamming that allows only low-rate fixes.
• DutyCycle → Alternate between ON and OFF windows of fixed length, simulating periodic outages.

See also GnssDegradationConfig for how this is combined with a GnssFaultModel and a random seed.

Examples

use strapdown::messages::GnssScheduler;

// Keep all GNSS fixes (no scheduling)
let sched = GnssScheduler::PassThrough;

// Deliver a GNSS fix every 10 seconds, starting at t=0
let sched = GnssScheduler::FixedInterval { interval_s: 10.0, phase_s: 0.0 };

// Alternate 5 s ON, 15 s OFF, starting in ON state at t=0
let sched = GnssScheduler::DutyCycle { on_s: 5.0, off_s: 15.0, start_phase_s: 0.0 };

Variants

PassThrough

Pass every GNSS fix through to the filter with no rate reduction.

Useful as a baseline when you want to test only fault injection without simulating outages or reduced update rates.

FixedInterval

Emit GNSS measurements at a fixed interval, discarding those in between.

This simulates reduced-rate operation under jamming or low-power conditions.

• interval_s — Desired interval between emitted GNSS fixes, in seconds.
• phase_s — Initial time offset before the first emission, in seconds.

Fields

interval_s: f64

Desired interval between GNSS fixes (seconds).

phase_s: f64

Initial phase offset before the first emitted fix (seconds).

DutyCycle

Alternate between ON and OFF windows to create duty-cycled outages.

This simulates conditions like periodic GNSS denial or environments where reception is available only intermittently (e.g., urban canyon).

• on_s — Duration of each ON window (seconds).
• off_s — Duration of each OFF window (seconds).
• start_phase_s — Initial time offset before the first toggle (seconds).

Fields

on_s: f64

Duration of each ON window (seconds).

off_s: f64

Duration of each OFF window (seconds).

start_phase_s: f64

Initial phase offset before the first ON/OFF toggle (seconds).

Trait Implementations

impl Clone for GnssScheduler

fn clone(&self) -> GnssScheduler

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for GnssScheduler

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

Formats the value using the given formatter.