MicroCosm® Software System

MicroCosm® is a high precision orbit and geodetic parameter determination software system. Using partitioned Bayesian least squares and Cowell's method of numerical integration, MicroCosm® performs solutions of satellite orbit and geodetic parameters without compromises in physical modeling.

MicroCosm® is available for use on Sun SPARC® computers, HP 9000 PA-RISC® computers, Silicon Graphics MIPS® IRIX® computers, Silicon Graphics Altix® Itanium2® SUSE^TM Linux® computers, IA-32 & AMD64® Solaris® computers and Intel Pentium® and Xeon® PC's. Documentation consists of four volumes with an additional three part volume for MicroCosm® Limited Source Code licensees.

The physical models used include: atmospheric drag, solar radiation pressure, Earth gravitation, polar motion, Earth rotation, solid Earth tides, ocean tides, tectonic plate motion, ocean loading, third body gravitation, Earth precession & nutation, tropospheric refraction, transmitter & receiver clock variations and instrumentation biases & ambiguities.

Measurements modeled include: laser range, GLRS laser range, radar range, TDRS range, GPS and GLONASS pseudorange and carrier phase (including single, double and triple differences), radar range rates, TDRS range rate, TRANET / GEOCEIVER Dopplers, DORIS Doppler, radar altimeter range, topocentric right ascension / declination, direction cosines, X / Y angles and azimuth / elevation angles.

MicroCosm® has been designed to permit the inclusion in a single data arc of as many as 99 satellites. With this capability, orbits for the entire constellation of GPS spacecraft and multiple "user" spacecraft may be simultaneously determined by MicroCosm®. The partitioned parameter estimation algorithms employed, permit the solution of global parameters based upon the combination of data from multiple arcs, each with its own set of satellite specific arc parameters.

To learn more about MicroCosm® please contact:

®SPARC is a registered trademark of SPARC International, Inc.
®Solaris is a registered trademark of Sun Microsystems, Inc.
®HP 9000 PA-RISC is a registered trademark of Hewlett-Packard Co.
®HP-UX is a registered trademark of Hewlett-Packard Co.
®MIPS is a registered trademark of MIPS Technologies, Inc.
®IRIX and ALTIX are registered trademarks of Silicon Graphics, Inc.
^TMSUSE is a trademark of SUSE Linux, AG
®Linux is a registered trademark of Linus Torvalds.
®AMD64 is a registered trademark of Advanced Micro Devices, Inc.
®Pentium, Xeon and Itanium are registered trademarks of Intel Corp.
®Windows is a registered trademark of Microsoft Corp.
®MicroCosm is a registered trademark of Van Martin Systems, Inc.

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