Doppler-free distance measuring system
First Claim
6. A SYSTEM FOR MEASURING THE DISTANCE TO A TARGET COMPRISING MEANS FOR GENERATING A WIDE BAND ENERGY SIGNAL, SAID WIDE BAND ENERGY GENERATING MEANS COMPRISING MEANS FOR GENERATING A NOISE SIGNAL AND A BANDPASS FILTER RESPONSIVELY CONNECTED TO SAID NOISE GENERATING MEANS, MEANS FOR TRANSMITTING SAID WIDE BAND ENERGY TO THE TARGET, MEANS FOR REPETITIVELY GATING A TIME PORTION OF THE OUTPUT OF SAID GENERATING MEANS TO SAID TRANSMITTING MEANS, MEANS CONNECTING SAID GATING MEANS TO SAID TRANSMITTING MEANS FOR DERIVING A PULSE WHICH IS UNCORRELATED TO A PRESELECTED DEGREE WITH THE OUTPUT OF SAID GATING MEANS, MEANS FOR RECEIVING A WIDE BAND OF ENERGY FROM THE TARGET, MEANS RESPONSIVE TO SAID RECEIVING MEANS FOR PRODUCING A PULSE WHEN THE RECEIVED ENERGY CONTAINS SIGNALS WHICH ARE UNCORRELATED TO THE PRESELECTED DEGREE, AND MEANS FOR MEASURING THE TIME DURATION BETWEEN THE OUTPUT OF SAID GATING MEANS AND THE OUTPUT OF SAID PULSE PRODUCING MEANS.
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13 Citations
6 Claims
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6. A SYSTEM FOR MEASURING THE DISTANCE TO A TARGET COMPRISING MEANS FOR GENERATING A WIDE BAND ENERGY SIGNAL, SAID WIDE BAND ENERGY GENERATING MEANS COMPRISING MEANS FOR GENERATING A NOISE SIGNAL AND A BANDPASS FILTER RESPONSIVELY CONNECTED TO SAID NOISE GENERATING MEANS, MEANS FOR TRANSMITTING SAID WIDE BAND ENERGY TO THE TARGET, MEANS FOR REPETITIVELY GATING A TIME PORTION OF THE OUTPUT OF SAID GENERATING MEANS TO SAID TRANSMITTING MEANS, MEANS CONNECTING SAID GATING MEANS TO SAID TRANSMITTING MEANS FOR DERIVING A PULSE WHICH IS UNCORRELATED TO A PRESELECTED DEGREE WITH THE OUTPUT OF SAID GATING MEANS, MEANS FOR RECEIVING A WIDE BAND OF ENERGY FROM THE TARGET, MEANS RESPONSIVE TO SAID RECEIVING MEANS FOR PRODUCING A PULSE WHEN THE RECEIVED ENERGY CONTAINS SIGNALS WHICH ARE UNCORRELATED TO THE PRESELECTED DEGREE, AND MEANS FOR MEASURING THE TIME DURATION BETWEEN THE OUTPUT OF SAID GATING MEANS AND THE OUTPUT OF SAID PULSE PRODUCING MEANS.
Specification
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Current AssigneeJames J. Spilker Jr, William R. Ramsay
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Original AssigneeJames J. Spilker Jr, William R. Ramsay
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InventorsRamsay, William R., Spilker, James J. Jr.
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Application NumberUS04/017,730Time in Patent Office1,831 DaysField of SearchUS Class Current342/135CPC Class CodesG01S 13/106 using transmission of pulse...
