A simple device for long-term radar cross section recordings

Eskelinen, Pekka; Ruoskanen, Jukka; Peltonen, Jouni
May 2009
Review of Scientific Instruments;May2009, Vol. 80 Issue 5, p056102
Academic Journal
A sample and hold circuit with settable delay can be used for recording of radar echo amplitude variations having time scales up to 100 s at the selected range bin in systems utilizing short rf pulses. The design is based on two integrated circuits and gives 1% uncertainty for 70 ns pulses. The key benefit is a real-time display of lengthy amplitude variations because the sample rate is defined by the radar pulse repetition frequency. Additionally we get a reduction in file size at least by the inverse of the radar's duty cycle. Examples of 10 and 100 s recordings with a Ka-band short pulse radar are described.


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