The design process for the electrical components began with the analysis of three primary heritage systems and concluded with the selection of commercial off-the-shelf (COTS) equipment modified for DANDE's requirements. The combination of the COTS equipment with the optimized quarter-wave shorted patch antennas provide the framework for a down-link data rate of 38, 400 bits per second (bps), and an up-link data rate of 9, 600 bps. Link budget analyses performed for worst-case scenarios periodically throughout the design process indicate positive margin on both the up and down-links. These results indicate that the DANDE Communications subsystem will meet mission requirements throughout the satellite's lifetime.The variation of the thermal envelope over the mission life of the spacecraft for the substrate is [-16, 37]abC. This causes a ... Structures will account for the delta in the change in size of the materials, but it is unknown as to the impact on tuninganbsp;...
|Title||:||Communications Systems Engineering for the Drag and Atmospheric Neutral Density Explorer|
|Publisher||:||ProQuest - 2008|