title: A simple device for long-term radar cross section recordings.
abstract: 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.
authors.affiliation: Helsinki University of Technology, PL 3340, 02015 TKK, Finland.
authors.forename: Pekka
authors.initials: P
authors.lastname: Eskelinen
authors.forename: Jukka
authors.initials: J
authors.lastname: Ruoskanen
authors.forename: Jouni
authors.initials: J
authors.lastname: Peltonen