Beacon-on-demand radar transponder
First Claim
Patent Images
1. A radar transponder, comprising:
- an amplifier operable to amplify a received radar pulse train to provide an amplified received radar pulse train;
an envelope detector operable to detect the envelope of the amplified received radar pulse train;
an edge detector operable to detect pulse edges in the envelope;
a code generator operable in a first made of operation for the transponder to provide code words synchronously to the detection of the pulse edges by the edge detector; and
aa multiplier configured to multiply the synchronously provided code words with the amplified received radar pulse train to provide an encoded pulse train signal.
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Abstract
A radar transponder is provided that synchronizes the encoding of repeated radar pulses using an envelope detector to detect the envelope of received radar pulse signals. An edge detector detects the pulse edges in the envelope so that code words may be multiplied with the received radar pulse signals synchronously with the detected pulse edges to provide an encoded pulse train that may be transmitted to a radar interrogator.
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Citations
14 Claims
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1. A radar transponder, comprising:
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an amplifier operable to amplify a received radar pulse train to provide an amplified received radar pulse train; an envelope detector operable to detect the envelope of the amplified received radar pulse train; an edge detector operable to detect pulse edges in the envelope; a code generator operable in a first made of operation for the transponder to provide code words synchronously to the detection of the pulse edges by the edge detector; and
aa multiplier configured to multiply the synchronously provided code words with the amplified received radar pulse train to provide an encoded pulse train signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of encoding, comprising:
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receiving a train of radar pulses; envelope detecting the received train of radar pulses to provide an envelope pulse signal; edge detecting the envelope pulse signal; generating code words substantially synchronously to the edges detected in the envelope pulse signal; and multiplying the generated code words with the received train of radar pulses to provide an encoded pulse train. - View Dependent Claims (10, 11, 12, 13, 14)
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Specification