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STK/SOLIS
Advanced Solutions Inc. (ASI) has created a user interface plug-in to the Analytical Graphics, Inc (AGI) Satellite Toolkit (STK™) mission analysis software that will provide integrated dynamic end-to-end spacecraft simulation. STK/SOLIS™ (Spacecraft Object Library in STK™) provides a full spacecraft simulation within the STK™ Analysis Software and is empowered by an integrated desktop version of the STK/ODySSy™ Flight Software. STK/ODySSy™ is a modular flight software architecture that provides a means for rapid spacecraft development, assembly, test, and integration as well as providing highly autonomous on-board operations. The STK/SOLIS™ and STK/ODySSy™ products provide a unified and validated toolset for mission, spacecraft and operations teams to use from mission design through operations.
STK/SOLIS™ expands current capabilities beyond the traditional mission planning and trajectory simulations by including full rotational dynamics and closed-loop attitude determination and control transforming STK™ into a full six degree-of-freedom (6 DOF) mission simulator. STK/SOLIS™ also contains sensor, actuator, propulsion, power, communications and payload modeling which are configured in easy to use graphical user interface. An example of some of the models available is given below:
Sensor Models
- Rate Sensors and IMU's
- Earth Sensors
- Sun Sensors
- Star Trackers
- Magnetometers
- GPS Receivers
Actuator Models
- Reaction Wheels
- Magnetic Torquers
- Attitude Control Thrusters
- Main Propulsion
Power Models
- Solar Arrays (Gimballed and Fixed)
- Power System Modeling (Battery State-of-Charge)
An example of the additional analysis capabilities enabled by the STK/SOLIS™ user interface plug-in is given below:
Rotational Dynamics Modeling
- Gyroscopic effects
- Appendage articulation effects
Environmental Torque Modeling
- Gravity gradient
- Solar
- Magnetic
- Aerodynamic
Attitude Dependent Aerodynamic Force and Torque Modeling
Attitude Dependent Solar Pressure Force and Torque Modeling
Slew Maneuver Profile Modeling
Configurable Levels of Attitude Determination and Control System Modeling
- Ideal (perfect) attitude control, simple attitude control modeling or closed-loop PID control with user defined controller parameters
- Ideal (perfect) attitude determination, simple attitude determination or extended Kalman filter attitude determination
Momentum Accumulation and Dumping
Power Modeling (i.e., battery state-of-charge)
Spacecraft templates can be preconfigured in STK/SOLIS™ enabling rapid configuration and analysis of spacecraft requirements when a mission need arises. After an accelerated design and analysis cycle using STK/SOLIS™, the resulting flight software configuration can be targeted for actual flight avionics at the touch of a button, enabled by the STK/SOLIS™ architecture which embeds a desktop version of the on-board flight software (STK/ODySSy™).
