专利名称：RADAR DETECTION AND SIGNAL
PROCESSING CIRCUIT
发明人：MARTINSON, Glen, Douglas申请号：EP85900485.0申请日：19841221公开号：EP0168430A1公开日：19860122
摘要： Signal processing circuits and radar detection possess a local oscillator mixerand HF (16), an intermediate frequency (IF) (18), a swept frequency oscillator (24) and abandpass filter ( 30) whose output goes to a detector (34) for average frequency signalsto frequency modulation. The detector has at least a first output signal that is sent totwo pairs of complementary paired comparators (48; 50, 50) whose outputs are adjustedlevels of low and high threshold. The output of the first complementary pair ofcomparators (48, 48) is examined by a microprocessor (42) for the incidence of low-threshold signal detected in a number of spaced cells determined by a clock whichdivides the output of the detector the time cells of the scan period of the sweptoscillator. A signal processing is provided so that the impact signals in a pair of cellsspaced on a given number of consecutive scans causes the triggering of an alarm.Similarly, an output high threshold is considered so that the impact of a high thresholdsignal detected in a pair of cells spaced around a different number and smallerconsecutive scans causes the triggering of an alarm. The sensitivity of the circuit can beadjusted by increasing or decreasing depending on the number of low threshold signalswhich are detected.
申请人：B.E.L. TRONICS LIMITED,ASQUITH, Anthony
地址：2422 Dunwin Drive Mississauga, Ontario L5L 1J9 CA,173 Westvale DriveWaterloo, Ontario N2T 1B7 CA
国籍：CA,CA
代理机构：Hayward, Denis Edward Peter, et al
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