Continuous wave frequency modulation distance measuring apparatus
First Claim
1. IN A CONTINUOUS-WAVE FREQUENCY-MODULATION RADIO DISTANCE MEASURING SYSTEM HAVING MEANS FOR RADIATING A FREQUENCY-MODULATED CARRIER WAVE, MEANS FOR RECEIVING SAID FREQUENCY-MODULATED CARRIER WAVE AFTER REFLECTION FROM A SPACED BODY, AND MEANS FOR PRODUCING FROM SAID RECEIVED WAVE A SIGNAL HAVING THE WAVEFORM OF A FREQUENCY-MODULATED WAVE WHOSE MODULATION INDEX IS A FUNCTION BOTH OF RANGE TO SAID BODY AND OF THE FREQUENCY DEVIATION OF SAID RADIATED CARRIER WAVE, THE IMPROVEMENT COMPRISING MEANS, INCLUDING MEANS FOR ADJUSTING A CHARACTERISTIC OF SAID RADIATED WAVE FOR MAINTAINING A PREDETERMINED SIDE BAND OF SAID PRODUCED SIGNAL AT A MAXIMUM AMPLITUDE DESPITE CHANGES IN DISTANCE TO SAID BODY, AND A DISTANCE INDICATOR RESPONSIVE TO SAID ADJUSTING MEANS.
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1 Claim
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1. IN A CONTINUOUS-WAVE FREQUENCY-MODULATION RADIO DISTANCE MEASURING SYSTEM HAVING MEANS FOR RADIATING A FREQUENCY-MODULATED CARRIER WAVE, MEANS FOR RECEIVING SAID FREQUENCY-MODULATED CARRIER WAVE AFTER REFLECTION FROM A SPACED BODY, AND MEANS FOR PRODUCING FROM SAID RECEIVED WAVE A SIGNAL HAVING THE WAVEFORM OF A FREQUENCY-MODULATED WAVE WHOSE MODULATION INDEX IS A FUNCTION BOTH OF RANGE TO SAID BODY AND OF THE FREQUENCY DEVIATION OF SAID RADIATED CARRIER WAVE, THE IMPROVEMENT COMPRISING MEANS, INCLUDING MEANS FOR ADJUSTING A CHARACTERISTIC OF SAID RADIATED WAVE FOR MAINTAINING A PREDETERMINED SIDE BAND OF SAID PRODUCED SIGNAL AT A MAXIMUM AMPLITUDE DESPITE CHANGES IN DISTANCE TO SAID BODY, AND A DISTANCE INDICATOR RESPONSIVE TO SAID ADJUSTING MEANS.
Specification
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Current AssigneeHarold Goldberg
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Original AssigneeHarold Goldberg
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InventorsGoldberg, Harold
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Application NumberUS03/704,153Time in Patent Office2,167 DaysField of SearchUS Class Current342/83CPC Class CodesG01S 13/342 using sinusoidal modulation
