STK FOR CUBESATS PRESENTED BY ALEX RIDGEWAY

Launch Vehicle State Vector

Modelling

Solar Panel power generation analysis

Total Vehicle Lifetime Analysis

Two Line Element Monitoring

Satellite Overflight and Contact

Schedule

Simulate attitude commanding

Constellation Modelling and

Simulation

Integration with other Tools

like Matlab & Excel

Real-time Monitoring

Trade study Capabilities

Utilize attitude control schemes

from external tools

Evaluate Radiation Dosage

Evaluate the Thermal

Environment

Entrance and Exit times through SAA

Compute Safety of Flight

Compute the local magnetic field

Optimal Satellite Tasking

Ground Station Uplink/Downlink

Plans

Ops Crew and On-Orbit Activity

Planning

Calibration and Maneuver resource

availability

Mission Analysis from Launch to End-of-Mission

Collision Probabilities

Satellite Tracking Determine Satellite orbit and Propagate

accurately

Analysis Areas for Cubesat Operators

Free & SatPro

Advanced Orbit Design with tools for

mission planning and effective operations

Launch Vehicle State Vector Modelling

Solar Panel power generation analysis

Lifetime Analysis

TLE Monitoring

Satellite Overflight

Simulate attitude commanding

Constellation Modelling using Walker

Constellation Tool

Integration

Complete Integration with external tools for extending, automating & increasing usability

Integrate all other Tools with STK

• Matlab/Similink

• ESRI

• Excel

Real-time Monitor the Position, Attitude and Sensor Pointing of the

cubesat

Cost Modelling and other custom models fed with

STK generated data

Simulate and Analyze attitude control with advanced control

diagrams in tools like Simulink

SEET

Complete set of Space Environment Modelling

and Analysis Tools within STK Framework

Computes expected dose rate and total dose due to energetic particle fluxes

Computes the thermal environment energy with

any internal heat dissipation

Identify a spacecraft's entrance and exit times

through SAA

Computes the total mass distribution of meteor and

orbital debris particles that impact

Compute the local magnetic field at your

satellite

Scheduler

Optimal Satellite Tasking for the entire

mission utilizing advanced algorithms

and complex

Ground Station Uplink/Downlink Plans

Crew, Event and Special Activity Planning

Calibration, Maneuver and Special Tasking

resource timing

Total Mission Scheduling including all time and resource constrained

Astrogator* & CAT

Comprehensive maneuver planning

for the entire Lifecycle and advanced Collision

Detection

LifeCylce Includes

• Launch

• LV separation

• Initialization

• Station keeping

• Collision avoidance

• Anomalous thrusting

Supports all engine types from conventional, ion

and custom engine models

Collision Detection with probability and

uncertainty

ODTK**

Accurate Orbit Determination and Prediction use raw

tracking data for high orbit accuracy

Ingest and process satellite tracking data

Estimate

• Satellite orbit

• Tracking equipment biases

• Environment affecting satellite motion

Provide ephemeris & covariance

Provide analysis graphs, reports and data to be

ingested in other planning or engineering tools

*For Maneuvering

Satellites

**Requires satellite

tracking &/or GPS

STK Baseline Workflow

Search database of models Create platforms & payloads

Line of sight calculations Geometry constraints

1

2

3 4

3D windows Timeline view

Open API File interoperability

Custom data products HD videos

5 6

7

8

9 10

1

2

3 4

5 6

7

8

9 10

STK Free “Top 10” Capabilities for Space

Supercharged Free Offering

Define dynamic

vehicle motion

Import external

trajectories Dynamic 3D Display

Pre-defined

coordinate frames

Point-to-point

analysis

Custom

reports & graphs

Dynamic 2D Display

STK – the FREE baseline

Search and import

from TLE Database

Analyze system relationships Timeline View

Relative Time Events

SatPro SatPro is a collection of tool and propagators specifically focused

on satellite owners & operators

Use STK’s High Precision Orbit Propagator (HPOP) – for advanced orbit propagation taking external force models into consideration Gravitational, Third-

body, Atmospheric Drag, Solar Radiation Pressure, and Customizable external forces

Include SP3 propagation to support precise GPS and other GNSS orbits

Solar Panel Tool – For predicted power generation based on available on-board solar panel areas

Attitude Simulator – For Advanced attitude profiles available for targeted, aligned, spinning, & axis specific slew rate modes

Lifetime Tool – For predicting satellite altitude decay over large time duration

Lighting & Power Systems Advanced Orbit Propagation Lifetime Tool Attitude Simulator

Integration STK Integration allows external connection of STK to applications and external data

Real-Time satellite position, attitude, and sensor pointing can be visualized and analyzed

in STK from a telemetry feed

Direct interface to third-party applications to Extend STK Analysis

– Utilizing MATLAB, MS Excel and others.

Ingest industry-standard GIS data

– from ESRI© map documents locally or served

Link STK Simulations with other software, hardware, or legacy systems

Utilize custom algorithms to extend AGI’s off-the-shelf analysis

Automate repetitive tasks for increased usability and for ease of operations

Build Custom interfaces for increased usability and ease of operations

Space Environments and Effect Tool (SEET)

• STK Space Environment and Effects Tool (SEET) is designed for use by spacecraft designers, analysts and operators to evaluate the effects of the space environment on their spacecraft

• Radiation Environment • Computes expected dose rate and total dose due to energetic

particle fluxes for a range of shielding thicknesses and material

• Magnetic Field • Compute the local magnetic field at satellite

• Vehicle Temperature • Computes the thermal environment energy with any internal

heat dissipation

• South Atlantic Anomaly (SAA) modeling • Identify a spacecraft's entrance and exit times through the SAA

• Particle Impacts • Computes the total mass distribution of meteor and orbital

debris particles that impact a spacecraft

Thermal / Radiation Effects

Scheduler STK Scheduler product is used to deconflict mission, facility and constellation

schedules for efficient operations

Define schedule possibilities based on mission geometry, constraints and resources

Optimize resource allocation for efficient tracking and TT&C

Utilize multiple industry-leading scheduling algorithm – Multi-pass

– Neural network

– Random Walk

Define real-world constraints based on STK analysis

Fully scalable from single satellite to large constellations and facility networks

Animation of schedule solutions in STK environment for visual analysis

Total Mission Scheduling including all time and resource constrained system – Total Satellite Tasking

– Ground Station Uplink/Downlink Plans

– Crew, Event and Special Activity Planning

– Calibration, Maneuver and Special Tasking resource timing

TT&C Modeling

Astrogator & Conjunction Analysis Tool

STK Astrogator: models launch sequences,

satellite maneuvers & full mission planning of satellites

Orbital maneuvers analysis with resulting trajectory

Targeting sequences for optimal mission analysis

required for desired orbital parameters

Fuel-usage calculations for enhanced lifetime analysis

of on station operations

Advanced maneuver profiles to model impulsive and

finite burns

High-fidelity numerical integration of force models:

including Runge-Kutta, Burlisch-Stoer and others

Industry-standard atmospheric density models: Harris-

Priester, Jaccia-Roberts, Cira 72 and others

Built-in trajectory optimization tools

and an advanced Scripting Tool

STK Conjunction Analysis Tool: for rapid predictions of satellite conjunctions

Leverages customer ephemeris and JSPOC satellite

database for conjunction analysis between 15,000+

Resident Space Objects and your cubesat

Generates detailed analysis including close approach

reports by time, proximity, and collision probability

Uncertainty analysis through error ellipsoids and

covariance

3D visualization of error volumes and close approach

geometry

Historical trending for RSO objects

Collision Avoidance Maneuver Propulsion Systems

Tools utilized for satellites

with maneuver capability

Orbit Determination Tool Kit Ingest and process satellite tracking data from Customer’s Tracking Sites

Estimate

– Satellite orbit

– Tracking equipment biases

– Environment affecting satellite motion

Provide ephemeris & covariance

Provide analysis graphs & reports

ODTK utilizes

– Optimal sequential filter: Extended Kalman Filter with Customized process noise

– Matched optimal sequential smoother and Variable lag smoother

– Matched simulator

– Initial orbit determination tools: Batch least squares & Gooding Angles,

Scripts utilize STK & ODTK capabilities

Process multiple satellites simultaneously

Allows processing of tracking through maneuvers

– Finite and impulsive burns

– No need to stop your OD process and wait “in the dark”

Provides orbit plus realistic covariance

– Physical processes modeled and measured

Biases, atmospheric drag, solar pressure, etc.

– Maneuver calibration

– Used to assess accuracy vs. requirements

Automation for ‘lights-out’ operation

ODTK Output in STK

NRO Operations Squadron (NOPS) Cygnus

Navy Space Operations Center Aqua

NASA Goddard Aura

Applied Defense Solutions (ADS) Terra

Missile Defense Agency (MDA) EO-1

AFRL MMSOC Landsat V

3 SES MMSOC Landsat VII

Johns Hopkins Applied Physics Lab GLAST/Fermi

Canadian Space Agency TDRS

MDA IBEX

Orbital Sciences RBSP

SkyBox Imaging MMS

Artemis LRO

JWST LADEE

QUESTIONS?