Complete GN&C,
re-imagined.

Proprietary intelligent tools that take you from architecture to certified flight code.

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The Challenge: GN&C Today

Modern missions still rebuild GN&C stacks for each program—leading to delays, rework, and high integration risk.

1

Manual & Brittle

Every mission rebuilds GN&C stacks from scratch.

2

Slow Development Cycles

Simulation and verification take months—even for small changes.

3

High Rework, Low Reuse

Non-modular architectures; a sensor/actuator swap triggers redesign.

4

Expensive & High Risk

GN&C is a top cost and schedule driver, especially for high-autonomy or human-rated missions.

5

Talent Bottleneck

Deep GN&C engineers are scarce; teams burn time on integration instead of innovation.

6

Poor Scalability

Small changes ripple across design and test cycles.

How Astro Fixes It

We use a proprietary, integrated GN&C toolchain—navigation, guidance, control, simulation, V&V, and certification utilities—deployed by our engineers on your program.

✓

Integrated Toolchain

Unified state/message schema (frames, units, timing, covariance) across navigation, guidance, control, and simulation—no ad-hoc glue or file conversions.

✓

Continuous Verification

Always-on Monte-Carlo & scenario sweeps with captured evidence artifacts.

✓

Modular Architecture

Interface-driven modules with change tracking: when requirements or code change, impact points are surfaced and affected models/constraints are re-validated across nav/guidance/control.

✓

Schedule Compression

Parallelized design↔verify loop; automated documentation and ops planning.

✓

Reduced Cost & Risk

Early FDIR, regression packs, and coverage analysis cut late-phase churn.

✓

Flight-Cert Outputs

C/C++ flight code and NASA-aligned compliance dossier generation.

The Complete GN&C Stack

Ten proprietary tools, one integrated workflow.

AstroNav

Mission‑grade state estimation for position, velocity, and attitude.

  • High‑fidelity sensor fusion (IMU, GNSS, star tracker, sun sensor, LiDAR)
  • Fault‑tolerant propagation through outages, eclipses, and mis‑alignments
  • On‑orbit calibration and alignment utilities

AstroGuidance

Optimal trajectories and maneuvers—from concept to execution.

  • Low‑thrust, multi‑body, and rendezvous trajectory solvers
  • Constraint‑aware targeting with duty‑cycle, plume, and keep‑out limits
  • Closed‑loop guidance hooks for on‑board replanning

AstroControl

Deterministic control laws for precision pointing and orbit keeping.

  • Linear, nonlinear, and robust designs with anti‑windup handling
  • Actuator allocation with saturation and rate‑limit constraints
  • Jitter‑suppression and stability envelopes validated via Monte‑Carlo

AstroSim Twin

Six‑DOF digital twin for design, verification, and ops rehearsal.

  • High‑order rigid‑body dynamics with environmental torques & perturbations
  • Scenario scripting, failure injection, and Monte‑Carlo batch drivers
  • Time‑synchronised I/O layers for bench or processor‑in‑the‑loop tests

GN&C Integrator

Combines navigation, guidance, and control into a validated stack.

  • Interface contracts and real‑time scheduling budgets auto‑checked
  • Auto‑generated mode/state sequencing and data‑flow diagrams
  • Continuous regression test‑packs with pass/fail dashboards

AstroFDIR

Detects, isolates, and recovers from off‑nominal events.

  • Rule‑ and model‑driven monitors with tunable thresholds
  • Safe‑mode entry and recovery state machines
  • Failure‑family coverage analysis and dwell‑time metrics

AstroForge

Generates flight‑ready C/C++ from verified GN&C designs.

  • Targets core‑Flight (cFS) and integrates with Trick‑based sims
  • Auto‑emitted unit‑test scaffolds and stubs
  • Static‑analysis profiles (e.g., MISRA‑C 2012) selectable

Ops Planning

Constraint‑aware command timelines, end‑to‑end.

  • Phase templates: commissioning → cruise → proximity → EOL
  • Scheduler honours thermal, power, antenna and keep‑out zones
  • Exports to common Mission‑Planning‑System (MPS) formats

Astro V&V

Verification and validation—integrated from day one.

  • Bidirectional requirements trace from spec to evidence
  • High‑coverage Monte‑Carlo and worst‑case search campaigns
  • Comprehensive verification reports with margin accounting

Astro Certification Toolkit

Streamlines evidence and compliance reporting.

  • NASA‑aligned compliance matrices and checklists
  • Evidence tracking, electronic sign‑offs, and audit trails
  • One‑click dossier export for authority submission

How We Work

We deliver flight‑ready GN&C systems end‑to‑end using our proprietary engineering toolchain.

  1. 01 — Discovery
    Capture mission objectives, operational environments, constraints, and heritage hardware; translate them into quantified GN&C requirements.
  2. 02 — Architecture
    Develop system architecture, mode/state diagrams, interface‑control documents, timing budgets, and performance allocations.
  3. 03 — Simulation & Design
    Build mission‑specific digital twins; synthesize navigation filters, guidance profiles, and control laws; stress‑test against worst‑case dispersions.
  4. 04 — Flight Code
    Autogenerate MISRA‑compliant C/C++ for the target flight computer, complete with unit‑test harnesses and hardware‑abstraction layers.
  5. 05 — Verification & Validation
    Execute high‑coverage Monte‑Carlo campaigns and formal analyses; produce requirements‑to‑evidence trace and performance‑margin reports.
  6. 06 — Certification & Ops
    Compile NASA‑aligned compliance dossiers, support integration and commissioning, and provide on‑orbit GN&C updates as required.

Industries & Mission Types We Serve

From low‑Earth orbit constellations to deep‑space exploration, our GN&C expertise spans a wide mission spectrum.

Earth Observation

Precision pointing, agile retargeting, and high‑duty revisit cycles for imagery and analytics.

Deep‑Space Probe

Long‑arc navigation, low‑thrust guidance, and fault‑tolerant autonomy beyond GEO.

Formation‑Flying

Tight relative‑motion control for distributed apertures and synthetic constellations.

Docking & Rendezvous

Safe‑mode approach corridors, sensor fusion, and close‑range GN&C for on‑orbit servicing.

Station‑Keeping

High‑accuracy orbit maintenance for GEO, cislunar halo, and L1/L2 libration missions.

Lunar & Surface Ops

GN&C solutions for lunar orbit insertion, descent, and surface mobility platforms.

What You Get

Tangible, mission-ready outputs at each milestone.

GN&C Architecture Specification

Interface Control Documents, task‑timeline budgets, mode & contingency states, and allocation of performance margins across guidance, navigation, and control.

Digital‑Twin Analysis Report

High‑fidelity 6‑DOF mission simulations with environment models, scenario definitions, assumption logs, and validated performance envelopes under worst‑case dispersions.

GN&C Models & Algorithms

Navigation filter formulations (EKF/UKF/particle), trajectory‑planning algorithms, and attitude/orbit control laws with tuned gains and formal stability proofs.

Flight‑Ready Embedded Code (C/C++)

MISRA‑compliant C/C++ sources and build system, cFS/Trick compatible, with autogenerated unit tests and benchmark configurations.

Verification & Validation Evidence

Requirements trace matrix, automated regression results, Monte‑Carlo coverage statistics, worst‑case search artifacts, and static‑analysis or formal‑proof logs.

Certification Compliance Dossier

NASA‑aligned compliance matrices, quality‑assurance records, signed verification evidence, and configuration‑management baselines ready for authority submission.

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