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Low Earth Orbit Numerical Analysis & Research Tools

LEONART (Low Earth Orbit Numerical Analysis and Research Tools) is a software framework for the system level design and analysis of multi-satellite communication systems in low or medium earth orbit (LEO or MEO). It has been developed since 1992, by the Ecole Nationale Superieure des Telecommunications (E.N.S.T. - France), and the first version was developed under contract with C.N.E.S., the French space agency.

The LEONART framework design tool has been made to configure the different parts of the system, to simulate the behavior of the system, and to analyze the simulation results. The design fields covered by LEONART are: Earth coverage, inter-satellites links, mobile radio channel fading, and antenna patterns.

LEONART Architecture

The LEONART framework is made of a set of system level configuration, simulation and analysis tools that communicate via a database as displayed on the figure here below. Each application is independent, and offers a convivial X-Window, MOTIF, interface to the designer.

The applications that can be accessed by the LEONART Framework General Interface are:

• CAT (Coverage Analysis Tools)
• ISL (Inter-Satellite Links Tools)
• FAT (Fade Analysis Tools)
• AGAT (Antenna Generation and Analysis Tools)
• Graphical Tools

Leonart Architecture