NAVSIM ?

NAVSIM is a scientific project realised by the German Aerospace Centre (DLR) and sponsored by the German Government (BMBF). The project aims at the development of a software simulation tool set to support the design and verification of satellite based navigation systems.

Capabilities ?

NAVSIM is developed as a software simulation system used for design and validation tasks in the field of satellite navigation. NAVSIM gives the capability to analyse the GNSS performance under consideration of significant natural and physical impacts related to specified technical characte-ristics of transmitter and reception components. Additionally it can be used as a verification tool with respect to correction models, navigation algorithms and application methods. Its open architecture enables the support of engineers involved in design and development of new navigation satellite systems up to the creation of user-specific application equipment.

Features

-current and future navigation systems are covered
-static and/or dynamic users
-elevation controlled geometric satellite availability
-regular and irregular atmospheric effects
-several statistic multipath channels
-different antenna types
-generation of different signal structures
-impact of non-linearity / filtering
-selection of different receiver equipment
-receiver specific ranging errors
-system and satellite time aspects
-different algorithms for navigation solution

Architecture

-two layer concept with an Application Simulation Level (*ASL) based on Windows PC and a Signal Simulation Level -based on UNIX Workstation
-connection via TCP/IP interface
-whole system control by ASL
-source code written in ANSI-C (ASL) and MATLAB routines (SSL)
-graphical user interfaces
-automatic simulation run
-modular system design

Extensibility ?

The block based software architecture eases the quick adaptation to future requirements by means of system extension and module substitution.

Analysis

Price?