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Ultra-wideband (UWB) has been proposed for physical layer standard for high speed wireless personal area networks (WPAN). It has emerged as cost effective and reliable alternative to traditional wireless technologies in WPANs. This paper describes low complexity high data rate Ultra-wideband system based on Wimedia communication protocol. It intends to evaluate the performance of Wimedia-UWB wireless networks communication for spatial and aeronautic systems. The paper suggests a simulation model using NS-2 simulator to assess the feasibility of such networks and analyses it performance by providing high data-rate wireless communication. Experimentations results are done using Wimedia-UWB toolkit to reproduce theses simulations conditions on Airbus wings and EADS-ASTRIUM satellite. A simulation result shows the importance of the simulation approach to illustrate the satisfaction of the communication performance requirements and helps to reproduce simulation conditions in Hardware Test-Beds. Measurements prove the possibility of using such new approaches in aerospace industry.