Design and Testing of a Low-Power DISS Sounder

摘要

The University of Massachusetts Lowell Center for Atmospheric Research investigated the design of a low power Portable Digital Sounder (LP- DPS) that would meet Air Force requirements for replacement of the FMQ-12 Digital Ionospheric Sounder network. The new system contains all the electronics in a single chassis. Multi-Dimensional Processing makes weighted decisions verifying that received signals are sounder echoes before passing them on for post processing analysis. The raw or partially processes samples were moved out of the DSP so that the next measurement could proceed while the Main or Auxiliary computer executes the DSP algorithms in parallel with the sounder's DSP operations. This required high-speed transfer of large quantities of data, which was accomplished by streamlining the data transfer protocol between the DSP board and the main computer. The present analog receivers will be replaced with a digital receiver chip.