Automatic range gating for v-beam radar
First Claim
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1. A V-BEAM RADAR SYSTEM COMPRISING:
- A V-BEAM ANTENNA ASSEMBLY ROTATABLE IN AZIMUTH, A VERTICAL BEAM RECEIVING CHANNEL AND A SLANT BEAM RECEIVING CHANNEL FOR VERTICAL BEAM VIDEO AND SLANT BEAM VIDEO RESPECTIVELY FROM THE ANTENNA ASSEMBLY, A PPI EQUIPMENT INCLUDING A CATHODE RAY TUBE DISPLAY OPERATIVELY COUPLED TO THE ANTENNA ASSEMBLY AND OPERABLE TO PRODUCE A CURSOR SWEEP THAT TRACKS THE ANTENNA ASSEMBLY IN AZIMUTH, SAID PPI EQUIPMENT FURTHER INCLUDING AN ADJUSTABLE AZIMUTH CURSOR, A RANGE STROBE GENERATOR COUPLED TO THE PPI AND HAVING A RANGE ADJUST FOR SELECTIVELY LOCATING A RANGE MARK ALONG THE CURSOR SWEEP, A MONOSTABLE MULTIVIBRATOR COUPLED TO THE RANGE STROBE GENERATOR FOR GENERATING A VERTICAL BEAM RANGE GATE, A DIFFERENTIAL GEAR HAVING INPUT, OUTPUT, AND MEANS FOR ADJUSTING THE RELATIVE ANGULAR ORIENTATION BETWEEN INPUT AND OUTPUT, THE INPUT BEING OPERATIVELY COUPLED TO SAID ANTENNA ASSEMBLY FOR ROTATION THEREWITH, THE MEANS FOR ADJUSTING THE RELATIVE ANGULAR ORIENTATION AND THE AZIMUTH CURSOR BEING COUPLED FOR ANGULARLY DISPLACING INPUT AND OUTPUT OF THE DIFFERENTIAL GEAR IN EQUAL AMOUNT TO THE AZIMUTH DISPLACEMENT OF THE AZIMUTH CURSOR, A CIRCUIT INCLUDING A CONTINUOUS-TURN POTENTIONMETER WITH A ROTATABLE WIPER FOR PROVIDING A TRIANGULAR WAVEFROM FOR EACH COMPLETE ROTATION OF THE WIPER, FOR USE IN VERTICAL BEAM AZIMUTH GATING, THE WIPER BEING OPERATIVELY COUPLED TO THE DIFFERENTIAL OUTPUT FOR ROTATION THEREWITH AND ANGULARLY ADJUSTABLE RELATIVE THERETO, ANOTHER CIRCUIT INCLUDING A CONTINUOUS TURN POTENTIOMETER WITH A ROTATABLE WIPER FOR PROVIDING A SAWTOOTH WAVEFORM FOR EACH COMPLETE ROTATION OF THE WIPER, FOR USE IN SLANT BEAM AZIMUTH GATING, THE WIPER BEING OPERATIVELY COUPLED TO THE DIFFERENTIAL OUTPUT FOR ROTATION THEREWITH AND ANGULARLY ADJUSTABLE RELATIVE THERETO, A VERTICAL BEAM AZIMUTH GATE GENERATOR AND A SLANT BEAM AZIMUTH GATE GENERATOR COUPLED TO THE OUTPUTS OF THE RESPECTIVE CIRCUITS, EACH GATE GENERATOR HAVING AN INDEPENDENT GATE WIDTH ADJUST FOR SELECTING A THRESHOLD LEVEL FOR THE INPUT WAVEFORM, AND PROVIDING A RECTANGULAR WAVEFORM FOR EACH INPUT WAVEFORM, THE EDGES OF THE RECTANGULAR WAVEFORM BEING IN TIME COINCIDENCE WITH THE INTERSECTIONS OF THE THRESHOLD LEVEL AND THE INPUT WAVEFORM, A COINCIDENCE CIRCUIT COUPLED TO OUTPUTS OF SAID VERTICAL BEAM AZIMUTH GATE GENERATOR AND SAID MONOSTABLE MULTIVIBRATOR AND RESPONSIVE THERETO TO GENERATE A VERTICAL BEAM SPACE GATE,
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1 Claim
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1. A V-BEAM RADAR SYSTEM COMPRISING:
- A V-BEAM ANTENNA ASSEMBLY ROTATABLE IN AZIMUTH, A VERTICAL BEAM RECEIVING CHANNEL AND A SLANT BEAM RECEIVING CHANNEL FOR VERTICAL BEAM VIDEO AND SLANT BEAM VIDEO RESPECTIVELY FROM THE ANTENNA ASSEMBLY, A PPI EQUIPMENT INCLUDING A CATHODE RAY TUBE DISPLAY OPERATIVELY COUPLED TO THE ANTENNA ASSEMBLY AND OPERABLE TO PRODUCE A CURSOR SWEEP THAT TRACKS THE ANTENNA ASSEMBLY IN AZIMUTH, SAID PPI EQUIPMENT FURTHER INCLUDING AN ADJUSTABLE AZIMUTH CURSOR, A RANGE STROBE GENERATOR COUPLED TO THE PPI AND HAVING A RANGE ADJUST FOR SELECTIVELY LOCATING A RANGE MARK ALONG THE CURSOR SWEEP, A MONOSTABLE MULTIVIBRATOR COUPLED TO THE RANGE STROBE GENERATOR FOR GENERATING A VERTICAL BEAM RANGE GATE, A DIFFERENTIAL GEAR HAVING INPUT, OUTPUT, AND MEANS FOR ADJUSTING THE RELATIVE ANGULAR ORIENTATION BETWEEN INPUT AND OUTPUT, THE INPUT BEING OPERATIVELY COUPLED TO SAID ANTENNA ASSEMBLY FOR ROTATION THEREWITH, THE MEANS FOR ADJUSTING THE RELATIVE ANGULAR ORIENTATION AND THE AZIMUTH CURSOR BEING COUPLED FOR ANGULARLY DISPLACING INPUT AND OUTPUT OF THE DIFFERENTIAL GEAR IN EQUAL AMOUNT TO THE AZIMUTH DISPLACEMENT OF THE AZIMUTH CURSOR, A CIRCUIT INCLUDING A CONTINUOUS-TURN POTENTIONMETER WITH A ROTATABLE WIPER FOR PROVIDING A TRIANGULAR WAVEFROM FOR EACH COMPLETE ROTATION OF THE WIPER, FOR USE IN VERTICAL BEAM AZIMUTH GATING, THE WIPER BEING OPERATIVELY COUPLED TO THE DIFFERENTIAL OUTPUT FOR ROTATION THEREWITH AND ANGULARLY ADJUSTABLE RELATIVE THERETO, ANOTHER CIRCUIT INCLUDING A CONTINUOUS TURN POTENTIOMETER WITH A ROTATABLE WIPER FOR PROVIDING A SAWTOOTH WAVEFORM FOR EACH COMPLETE ROTATION OF THE WIPER, FOR USE IN SLANT BEAM AZIMUTH GATING, THE WIPER BEING OPERATIVELY COUPLED TO THE DIFFERENTIAL OUTPUT FOR ROTATION THEREWITH AND ANGULARLY ADJUSTABLE RELATIVE THERETO, A VERTICAL BEAM AZIMUTH GATE GENERATOR AND A SLANT BEAM AZIMUTH GATE GENERATOR COUPLED TO THE OUTPUTS OF THE RESPECTIVE CIRCUITS, EACH GATE GENERATOR HAVING AN INDEPENDENT GATE WIDTH ADJUST FOR SELECTING A THRESHOLD LEVEL FOR THE INPUT WAVEFORM, AND PROVIDING A RECTANGULAR WAVEFORM FOR EACH INPUT WAVEFORM, THE EDGES OF THE RECTANGULAR WAVEFORM BEING IN TIME COINCIDENCE WITH THE INTERSECTIONS OF THE THRESHOLD LEVEL AND THE INPUT WAVEFORM, A COINCIDENCE CIRCUIT COUPLED TO OUTPUTS OF SAID VERTICAL BEAM AZIMUTH GATE GENERATOR AND SAID MONOSTABLE MULTIVIBRATOR AND RESPONSIVE THERETO TO GENERATE A VERTICAL BEAM SPACE GATE,
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Current AssigneeJoseph R. Vadus
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Original AssigneeJoseph R. Vadus
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InventorsVadus, Joseph R.
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Application NumberUS04/357,829Time in Patent Office862 DaysField of SearchUS Class Current342/123CPC Class CodesG01S 1/02 using radio waves G01S19/00...
