SETHI : Digital radar system for signal generation and acquisition
2019 International Radar Conference (RADAR)(2019)
Abstract
SETHI is an airborne SAR system developed by ONERA, and integrating various sensors. The microwave ones cover from VHF-UHF to X or Ku Band, full polarimetric and very high resolution for high quality and advanced applications like interferometry and tomography applications. ONERA invest a lot in the entire SETHI platform, and particularly in the new digital system used since 2017, called Système d'Acquisition et de Mesures Expérimentales (SAMEVA). This new system gives us a lot of new perspectives. It is based on a modular PXI platform (PCI eXtension for Instrumentation) which gives us flexibility, modularity, quality and reliability. We also have some real-time streaming capabilities, GPS timestamping and the driving capacity of the entire analogic radar system. This paper presents mainly the digitizers and the new arbitrary waveform generation based on a VST (Vector Signal Transceiver).
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Key words
digital,synchronization,modularity,high-bandwidth,digitizers,FPGA,streaming,GPS,VST,signal,SAR
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