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Transient event data acquisition apparatus for use with radar systems and the like

  • US 3,973,258 A
  • Filed: 01/24/1975
  • Issued: 08/03/1976
  • Est. Priority Date: 01/24/1975
  • Status: Expired due to Term
First Claim
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1. Data acquisition apparatus for use with radar-type systems having a transmitter driven at a particular pulse repetition rate for producing a series of return signals from targets illuminated by each transmitted pulse, said apparatus providing real-time processing of preselected transient-event targets of a type capable of producing return signals initially greater than other signals in each of said return signal series, comprising:

  • resettably-gated peak detector means trackably acquiring the peak value present in each of said return signal series from one transmitter pulse and holding said peak value until the next transmitter pulse, said held value being produced as a peak detector output signal,transient event detector means generating an output signal marking the occurrence of each of said preselected transient events,sample and hold means triggered by said transient event output signal for producing an output signal representing the range of the transient event and for holding said output signal for a predetermined period of time, andpeak detector control means coupled to the output of said sample and hold means for gating said peak detector into "ON" and "OFF" modes with the "ON" mode centered about the range of said transient event and having a short duration period relative to said transmitter pulse repetition rate whereupon said peak detector samples each series of return signals only during said "ON" period for providing the amplitude of said transient event signal,said hold periods of said peak detector and said sample and hold means facilitating the recording of the transient event amplitude and range.

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