Distance measuring system
First Claim
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1. A SYSTEM OF MEASURING DISTANCE OF THE TYPE WHEREIN A CARRIER WAVE MODULATED BY A SIGNAL OF A MEASURING FREQUENCY IS TRANSMITTED FROM A MASTER STATION POSITIONED AT A FIRST POINT TO A SLAVE STATION POSITIONED AT A SECOND POINT AND THE TRANSMITTED WAVE IS REFLECTED AT THE SECOND POINT, SAID SYSTEM COMPRISING, IN COMBINATION, A FIRST TRANSMITTING MEANS TO TRANSMIT FROM SAID MASTER STATION TO SAID SLAVE STATION A FIRST CARRIER WAVE MODULATED BY A SIGNAL OF A FIRST MEASURING FREQUENCY AND A SIGNAL OF A REFERENCE FREQUENCY;
- FIRST RECEIVING MEANS AT SAID SLAVE STATION TO RECEIVE SAID MODULATED FIRST CARRIER WAVE TRANSMITTED FROM SAID MASTER STATION;
A SECOND TRANSMITTING MEANS AT SAID SLAVE STATION, TO TRANSMIT FROM SAID SLAVE STATION A SECOND CARRIER WAVE MODULATED BY A SIGNAL OF A SECOND MEASURING FREQUENCY, A FIRST MIXER DETECTOR AT SAID SLAVE STATION TO DETECT SID MODULATED SECOND CARRIER WAVE TOGETHER WITH SAID MODULATED FIRST CARRIER WAVE TO DERIVE THEREFROM A FIRST DIFFERENCE SIGNAL SIMULTANEOUSLY WITH THE DETECTION OF SAID REFERENCE FREQUENCY SIGNAL;
MEANS TO CONTROL THE SIGNAL OF SECOND MEASURING FREQUENCY SO AS TO MAINTAIN THE PHASE RELATION BETWEEN SAID FIRST DIFFERENCE SIGNAL AND SAID REFERENCE FREQUENCY SIGNAL AT A PREDETERMINED VALUE, A SECONE RECEIVING MEANS IN SAID MASTER STATION TO RECEIVE SAID SECOND MODULATED CARRIER WAVE TRANSMITTED FROM SAID SLAVE STATION, A SECOND MIXER DETECTOR IN SAID MASTER STATIO TO DETECT SID FIRST MODULATED CARRIER WAVE TOGETHER WITH SAID SECOND MODULATED CARRIER WAVE TRANSMITTED FROM SID SLAVE STATION TO DERIVE THEREFROM A SECOND DIFFERENCE SIGNAL;
AND, PHASE DIFFERENCE MEASURING MEANS, TO MEASURE THE PHASE DIFFERENCE FREQUENCY SIGNAL.
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1 Claim
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1. A SYSTEM OF MEASURING DISTANCE OF THE TYPE WHEREIN A CARRIER WAVE MODULATED BY A SIGNAL OF A MEASURING FREQUENCY IS TRANSMITTED FROM A MASTER STATION POSITIONED AT A FIRST POINT TO A SLAVE STATION POSITIONED AT A SECOND POINT AND THE TRANSMITTED WAVE IS REFLECTED AT THE SECOND POINT, SAID SYSTEM COMPRISING, IN COMBINATION, A FIRST TRANSMITTING MEANS TO TRANSMIT FROM SAID MASTER STATION TO SAID SLAVE STATION A FIRST CARRIER WAVE MODULATED BY A SIGNAL OF A FIRST MEASURING FREQUENCY AND A SIGNAL OF A REFERENCE FREQUENCY;
- FIRST RECEIVING MEANS AT SAID SLAVE STATION TO RECEIVE SAID MODULATED FIRST CARRIER WAVE TRANSMITTED FROM SAID MASTER STATION;
A SECOND TRANSMITTING MEANS AT SAID SLAVE STATION, TO TRANSMIT FROM SAID SLAVE STATION A SECOND CARRIER WAVE MODULATED BY A SIGNAL OF A SECOND MEASURING FREQUENCY, A FIRST MIXER DETECTOR AT SAID SLAVE STATION TO DETECT SID MODULATED SECOND CARRIER WAVE TOGETHER WITH SAID MODULATED FIRST CARRIER WAVE TO DERIVE THEREFROM A FIRST DIFFERENCE SIGNAL SIMULTANEOUSLY WITH THE DETECTION OF SAID REFERENCE FREQUENCY SIGNAL;
MEANS TO CONTROL THE SIGNAL OF SECOND MEASURING FREQUENCY SO AS TO MAINTAIN THE PHASE RELATION BETWEEN SAID FIRST DIFFERENCE SIGNAL AND SAID REFERENCE FREQUENCY SIGNAL AT A PREDETERMINED VALUE, A SECONE RECEIVING MEANS IN SAID MASTER STATION TO RECEIVE SAID SECOND MODULATED CARRIER WAVE TRANSMITTED FROM SAID SLAVE STATION, A SECOND MIXER DETECTOR IN SAID MASTER STATIO TO DETECT SID FIRST MODULATED CARRIER WAVE TOGETHER WITH SAID SECOND MODULATED CARRIER WAVE TRANSMITTED FROM SID SLAVE STATION TO DERIVE THEREFROM A SECOND DIFFERENCE SIGNAL;
AND, PHASE DIFFERENCE MEASURING MEANS, TO MEASURE THE PHASE DIFFERENCE FREQUENCY SIGNAL.
- FIRST RECEIVING MEANS AT SAID SLAVE STATION TO RECEIVE SAID MODULATED FIRST CARRIER WAVE TRANSMITTED FROM SAID MASTER STATION;
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Current AssigneeKyoji Kobayashi, Susumu Nojima, Takashi Enomoto
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Original AssigneeKyoji Kobayashi, Susumu Nojima, Takashi Enomoto
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InventorsKYOJI KOBAYASHI, TAKASHI ENOMOTO, SUSUMU NOJIMA
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Application NumberUS04/330,832Time in Patent Office673 DaysField of SearchUS Class Current342/125CPC Class CodesG01S 13/84 for distance determination ...
