| Output/Visualization |
Design |
Engineer |
Mission |
| Full 2D and 3D visualization with customizable view points |
x |
x |
x |
| Customizable view points |
|
x |
x |
| Custom/user defined XY plots, polar plots |
x |
x |
x |
| Custom/user defined ASCII reports |
x |
x |
x |
| Monitor window for "strip chart" type data |
x |
x |
x |
| Watch window for real-time constraint checking |
|
x |
x |
| Over 1300 parameters available for reporting and plotting |
x |
x |
x |
| Ground station masking and sensor swaths |
x |
x |
x |
| 3D Proximity Zone for station keeping/relative motion visualization |
|
x |
x |
| Spacecraft Modeling |
Design |
Engineer |
Mission |
| Full mass properties definition |
x |
x |
x |
| Sensors (see sensor features for more information) |
x |
x |
x |
| Tanks (spherical, interpolated, or electrical) |
|
x |
x |
| Thrusters (mono-propellant, bi-propellant, ion) |
|
x |
x |
| Antennas (conical FOV) |
x |
x |
x |
| Antennas (irregular polygon FOV, obscuration masking) |
x |
x |
x |
| Transceivers |
|
|
x |
| Collision avoidance calculations (Proximity Zones) |
|
x |
x |
| Multi-spacecraft |
x |
x |
x |
| Formation modeling |
|
x |
x |
| Sensors |
Design |
Engineer |
Mission |
| Simple conic |
x |
x |
x |
| Complex conic, irregular polygon, rectangular |
x |
x |
x |
| Obscuration masking |
x |
x |
x |
| Scanning sensor |
|
x |
x |
| Custom/user-defined sensor patterns |
|
x |
x |
| Attitude |
Design |
Engineer |
Mission |
| LVLH (nadir pointing with orbit-normal constraint), Mean of J2000 Earth Equator, Geodetic (geodetic pointing with orbit-normal constraint) |
x |
x |
x |
| User defined / Custom Coordinate Systems |
|
x |
x |
| Euler angles |
x |
x |
x |
| Quaternion, Attitude matrix, Spinner |
x |
x |
x |
| Target pointing attitude |
|
x |
x |
| Attitude history file (AHF) |
x |
x |
x |
| Maneuvers |
Design |
Engineer |
Mission |
| Impulsive maneuvers |
x |
x |
x |
| Finite maneuvers |
|
x |
x |
| Maneuver targeting/optimization |
x |
x |
x |
| Orbit Propagation |
Design |
Engineer |
Mission |
| Fixed or Variable Step (step size is user definable) |
x |
x |
x |
| Runge Kutta 4(5), VOP, Two Body, NORAD/SGP4 |
x |
x |
x |
| Runge Kutta 7(8), 8(9), Bulirsch Stoer, J2 Mean Elements |
|
x |
x |
| Use Air Force Space Command supplied SP & SGP4 DLL |
|
|
x |
| Planetary ephemeris (DE200 or DE405) |
x |
x |
x |
| SPICE ephemeris |
|
x |
x |
| Atmospheric drag/lift, Solar radiation pressure |
x |
x |
x |
| Atmospheric density - Analytic |
x |
x |
x |
| Atmospheric density - Jacchia Roberts, Harris Priester |
|
x |
x |
| Earth potential & Moon potential up to 100x100 |
x |
x |
x |
| NORAD two line elements (TLEs), FreeFlyer ephemeris/state, STK ephemeris/state |
x |
x |
x |
| User-defined ephemeris/state |
|
|
x |
| Orbit Calculations |
Design |
Engineer |
Mission |
| Over 150 orbit/trajectory parameters calculated at each integration step |
x |
x |
x |
| Unlimited user defined parameters using embedded math libraries or MATLAB connection |
|
x |
x |
| Dynamic real-time feedback available during each run |
x |
x |
x |
| Ground Station Modeling |
Design |
Engineer |
Mission |
| User defined location and masking or read from geodetics file |
x |
x |
x |
| Station bias parameters |
|
|
x |
| Station antenna parameters |
|
|
x |
| Ground Network Modeling |
|
x |
x |
| Visibility/Access Analysis |
Design |
Engineer |
Mission |
| Visibility period calculations between any objects (s/c to s/c, s/c to ground station, s/c to ground region, etc.) |
x |
x |
x |
| Field of view, elevation angle, azimuth angle, range & range rate |
x |
x |
x |
| Solar and lunar constraints /Lighting constraints / Beta angle constraints |
x |
x |
x |
| Temporal constraints (interval, duration, GMT, mean local time) |
x |
x |
x |
| Cross track, along track, range, and all associated rates |
x |
x |
x |
| AOS/LOS |
x |
x |
x |
| Sensor to sensor, sensor to s/c, sensor to ground station constraints |
x |
x |
x |
| Sensor tracking |
|
x |
x |
| Magnetic field regions |
x |
x |
x |
| Celestial object interference (all planets & star catalog) |
|
x |
x |
| Rapid performance coverage analysis for coverage and revisit statistics |
|
x |
x |
| Rapid performance close approach analysis |
|
x |
x |
| Logic Control |
Design |
Engineer |
Mission |
| Logic engine to control actions based on any calculated parameter |
x |
x |
x |
| Full-featured Scripting Language |
|
x |
x |
| For, If , While, Pause, Stop, Achieve, Target, Vary commands |
x |
x |
x |
| Fuzzy logic engine for conflicting constraint resolution |
|
x |
x |
| Orbit Determination |
Design |
Engineer |
Mission |
| Extended Kalman Filter, Batch Least Squares |
|
|
x |
| Orbit Determination error analysis |
|
|
x |
| Tracking Data filtering |
|
|
x |
| Ground based range/ range rate/ azimuth/ elevation tracking data |
|
|
x |
| TDRS tracking two-way range/ two-way Doppler tracking data |
|
|
x |
| GPS tracking data |
|
|
x |
| Spacecraft X, Y, Z, Vx, Vy, Vz, Cd, Cr, Transponder delay Solve-fors |
|
|
x |
| Ground station location, antenna bias Solve-fors |
|
|
x |
| Coordinate System Types |
Design |
Engineer |
Mission |
| Mean of J2000 Earth Equator/Earth Ecliptic, True of Date Earth Equator, NORAD |
x |
x |
x |
| Launch Vehicle Coordinates (user definable to ELV vendor specs) |
x |
x |
x |
| Cartesian, Keplerian/nonsingular Keplerian, Spherical/Spherical Lat/Long |
x |
x |
x |
| True Equator Mean Equinox, Equinoctial, Brouwer-Lyddane Mean/ J2 Brouwer-Lyddane, Mean of 1950 |
|
x |
x |
| Conversion functions to convert between systems |
|
x |
x |
| User defined / Custom Coordinate System |
|
x |
x |
| External Interfaces |
Design |
Engineer |
Mission |
| MATLAB interface |
|
x |
x |
| TCP/IP socket interface |
|
|
x |
| SQL 92 database compliant interface |
|
|
x |
| Run command to spawn external applications |
|
|
x |
| Customizable graphic user interface (GUI) |
|
|
x |
| Generic ASCII & Binary File Reader |
|
|
x |
| Automatic e-mail notification based on user defined rules |
|
|
x |
| Links to External Code |
|
|
x |
| Usability/User Interface |
Design |
Engineer |
Mission |
| Drag & Drop Mission Design Sequence |
x |
x |
x |
| Wizards and samples for quick problem set up |
x |
x |
x |
| Ephemeris browser and compare utilities |
x |
x |
x |
| Batch run/Command Line capability |
|
x |
x |
| Fuzzy set designer for fuzzy logic problem set-up |
|
x |
x |
| Miscellaneous |
Design |
Engineer |
Mission |
| Independently validated and verified |
x |
x |
x |
| On-line help files with context sensitive searching |
x |
x |
x |
| Automated parametric studies |
x |
x |
x |
| Monte-Carlo analysis |
|
x |
x |
| Unlimited window tiling output for dynamic user feedback |
x |
x |
x |
| Any parameter can be set/reset real-time during runs |
|
x |
x |
