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Guidance, Navigation, and Control (GNC)

Precision pointing and trajectory control across mission phases.

mysimulator teamUpdated June 2026≈ 3 min read▶ Open the simulation

Elements

Sensors: star trackers, IMUs, GNSS

Estimation: EKF/UKF, batch filters

Control: reaction wheels, thrusters

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Example

Example: Fine Pointing for Imager

Design estimator and controller.

Validate jitter budget.

Correlate on-orbit results.

Frequently asked questions

Jitter?

Isolation and control bandwidth.

Momentum dumping?

Magnetorquers/thrusters.

Faults?

FDIR and graceful degradation.

Autonomy?

Onboard planning and safeguards.

GNSS?

LEO vs deep-space nav.

Calibration?

On-orbit alignment.

Thermals?

Bias and drift management.

Simulation?

HIL and Monte Carlo.

Safety?

Keep-out zones and limits.

Outlook?

Vision-based GNC and AI.

Try it live

Everything above runs in your browser — open Spiral Galaxy and change the parameters while it is running. Nothing is installed, nothing is uploaded, the whole model lives in one tab.

▶ Open Spiral Galaxy simulation