The capabilities of the ASI Guidance, Navigation and Control (GN&C) group include all phases of spacecraft and GN&C subsystem development from conceptual design through in-space operations. Their expertise has been utilized to explore four planets, a comet, an asteroid, as well as enabling complex LEO and GEO missions.


ASI GN&C personnel have played key roles in the development of:

  • LEO & GEO spacecraft; nano, micro, small, & large
  • 3-Axis stable and spin-stabilized spacecraft
  • Large interplanetary imagers
  • Planetary landers
  • Human-rated systems
  • Aerosurface vehicles

Demonstrated technical capabilities include:


  • Spacecraft conceptual, preliminary, and detailed design
  • Component selection, integration, and test
  • Mission, lifetime, and operations analysis
  • Requirements development, verification, and validation
  • Algorithm development, simulation, and implementation
    • Navigation and ephemeris filters
    • Orbital dynamics, rendezvous, docking
    • Linear, phase-plane, modern, and integrated controllers
    • Planetary aerobraking and landing
    • Flexible, slosh, and multi-body dynamics
    • Mechanism and gimbal control
    • Time & frequency domain analysis, large-scale monte-carlo
  • GN&C flight software – requirements, design, build, test and fly
  • Mission operations and autonomy: initial checkout, calibrations, operational phases

Extensive hardware experience with:


  • Actuators: Reaction wheels, RCS & delta-V thrusters, magnetic torquer, CMG’s
  • Sensors: Star trackers, IMU’s, rate gyros, GPS recievers, sun sensors, horizon sensors, magnetometers
  • Mechanisms: Gimbals, motor drives, deployment mechanisms, passive dampers, isolation dampers, bladder systems

ASI has been the GN&C subsystem provider for:

  • AFRL TacSat-2
  • AFRL Demonstration & Science Experiments (DSX) Spacecraft
  • USAFA FalconSAT-5
  • USAFA FalconSAT-6
  • ORBCOMM Gen 2 (Constellation of 18 satellites)

Other programs that ASI’s GN&C personnel have supported include:

  • Mars Reconnaissance Orbiter (MRO)
  • Mars Odyssey
  • Genesis
  • Stardust
  • Mars Climate Orbiter
  • Mars Polar Lander
  • Mars Global Surveyor
  • Mars Atmosphere and Volatile Evolution Misson (MAVEN)
  • Phoenix Lander
  • Classified GEO Spacecraft
  • Magellan
  • FalconSat-5
  • FalconSat-6
  • JUNO
  • OSIRIS-Rex
  • Modular Space Vehicle (MSV)
  • Geostationary Operational Environmental Satellite (GOES-R)