BALLISTIC INFORMATION SUPPORTING FOR SPACE CRAFT MISSIONS CONTROL AND SPACE FLIGHT SIMULATING.

Designed by Nasibullin R.R.

This package is applied for information maintenance of various reseach, measuring, commercial ,communication satellites and systems of satellites. This system is applied for navigation,control,monitoring satellites assembled in satellite groups in real-time mode or in simulating mode. This package also may be useful for system analysis and system synthesis of satellite systems meant for various aims such as Earth surface monitoring, telecommunication, Earth's resource exploration, astro navigation, scientific purposes.

Basically the general structure of SMNS is consist from five packages of modules. These are following:

• satellite system visual simulation with displaying cinematic and dynamic parameters, indicating orientation and relative position on Earth map or Celestial map as a background .
• Prediction module comlete integration of motion eguation for inertial geocentric cartesian coordinates the standard epoch J2000 with various parameters of Earth gravitation sphear model. Use dynamic atmosphere model, SUN&MOON gravitation influence and low thrust or high thrust engines actions.
• determination orbital parameters using full or restricted queue of measurements .
• determination service intervals defined by mutual position of space probe relative to external objects such as: SUN , landed measuring centers, celectial bodies
• determination optimal manoeuvres with restrictions on service interval, time and resources of fuel
• calculation of launch conditions and simulating orbital injection with use carrier-missiles.

SMNS provides complete life-cycle of satellite systems including following operations:

• launch carrier-rocket with spaceprobes on a board
• mounting nominal orbit by use engines with impulse approximated thrust or low thrust engines
• orbital parameters determination using treatment external trajectorial measurements(such as distance,distance derivation);
• computing review zones for Instrumental Control Centers (ICC)
• space probes motion prediction, orientation in moving coordinate system with accounting influence of non-central gravitation sphear of Earth and gravitation influence from Sun&Moon, atmosphear resistance, artifical thrust action.
• See functional scheam of SMNS in Fig.1

SMNS consists from following parts:

A.SQL-SERVER (with use ORACLE SERVER 7) with database assembled in following maintain tables:

• satellites
• launch plants
• precomputed SUN&MOON ephemerids
• orbital positions (vector and orbital elements)
• Mission directives log for control, monitoring and maintenance for service.
• standardized space&rocket vehicles
• power thrust plants characteristics

See ER-model for this database in Fig.2 (desiged with use ErWin 3.0)

B. Interface module. Main monitoring and controlling module for representation information for monitoring, navigation and control alone satellite or satellites union.This software provides interaction for various ballistic algorithms in real-time mode or in analysis mode or in time scaling mode. Module was designed with use Borland C++ Builder for Windows 95/NT. Some components were designed in Microsoft Visual C++ 5.0 with MFC4.0.

See demoroll about module B. You may look review of the interface module for SMNS with graphic and voice explanations about all functions, possibillities, issues in interactiv mode review

C. Package of ballistic algorithms to decide on following problems:

• orbital position and orientation prediction. See Fig.3
• radio visual zones for land located Instrumental Control Centers. See Fig.4
• mutual position zones for constrainted direction to various celestial objects;
• launch time definition for optimal scheam for mounting of orbit with desired properties. See Fig.5
• package for optimal manoeuvres determination with applying low thrust or impuls approximated thrust control influention. See Fig.6
• orbital position prediction via treatment radio measurements. See Fig.7
• SUN&MOON ephemerids prediction.See Fig.8;

Package C was designed with use Microsoft Visual C++ & Microsoft Digital FORTRAN-90

For detailed information and demonstration version send query to [email protected]