Self-referencing radar pulse detector
AssigneeMcEwan Technologies, LLC
InventorThomas Edward McEwan
Life of this patent
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Abstract
An automatic pulse detector compares a radar video pulse to a delayed and amplified version of itself. The radar video pulse serves as an amplitude reference for a comparator. A delayed and amplified version of the same pulse serves as the pulse to be detected. Time of detection is amplitude independent and is not degraded by flat-topped pulses. Pulse detection occurs at a fixed, fractional point on the leading edge of a pulse where noise has less temporal influence than at the top of a pulse. Unlike a time-of-peak detector, the self-referencing pulse detector is well-suited to detecting wide, flat-topped pulses produced by expanded-time, pulse-echo radars operating in relatively narrow ISM bands.
Claims5
A method of detecting a radar video pulse (RVP), comprising:
- coupling a RVP to a first input of a comparator;
- delaying the RVP to produce a delayed RVP;
- amplifying the delayed RVP to produce a delayed and amplified RVP;
- coupling the amplified and delayed RVP to a second input of the comparator;
- and,
- providing a detected output pulse from the comparator.
A self-referencing radar pulse detector, comprising:
- a detection comparator having a first and a second input for producing a detected radar pulse;
- an input line for coupling a radar video pulse (RVP) to the first input of the comparator;
- a delay circuit having an input coupled to the input line for producing a delayed RVP;
- and,
- an amplifier having an input coupled to the delay circuit and an output coupled to the second input of the comparator for producing a delayed and amplified RVP.
Dependencies are inferred from the claim text.