Radar system for indicating position and course of a moving object relative to a stationary observation point

Claim 1

A SYSTEM FOR INDICATING POSITION AND COURSE OF A MOVING OBJECT RELATIVE TO A STATIONARY OBSERVATION POINT COMPRISING A RADAR TRANSMITTER AND RECEIVER LOCATED AT SAID OBSERVATION POINT HAVING A ROTATING RADIATOR ADAPTED TO SWEEP THE SURROUNDING AREA AT A PREDETERMINED SWEEP FREQUENCY AND ADAPTED TO RADIATE RADAR PULSES AT A SECOND PREDETERMINED PULSE FREQUENCY AND TO RECEIVE ECHO PULSES WHOSE TIME DELAYS ARE PROPORTIONAL TO THE RANGES OF OBJECTS IN SAID AREA, SAID RECEIVER HAVING A FIRST CATHODE-RAY TUBE HAVING AN ELECTRON BEAM AND A SCREEN, MEANS DEFLECTING SAID ELECTRON BEAM LINEARLY TO SCAN SAID SCREEN REPEATEDLY AT SAID PULSE FREQUENCY AND MEANS ENHANCING SAID ELECTRON BEAM BY SAID ECHO PULSES TO PRODUCE LIGHT SPOTS ON SAID SCREEN TIMED AND SPACED IN A MANNER TO REVEAL THE BEARINGS AND RANGES RESPECTIVELY TO SAID OBJECTS, A PICK-UP TUBE POSITIONED TO RECEIVE IMAGES OF LIGHT SPOTS ON SAID CATHODE-RAY TUBE SCREEN, MEANS INCLUDING AN ELECTRON BEAM FOR SCANNING SAID IMAGE ON SAID PICKUP TUBE LINEARLY AT A PREDETERMINED FREQUENCY LOWER THAN SAID PULSE FREQUENCY, TO PRODUCE ELECTRICAL IMPULSES FROM SAID PICKUP TUBE WHOSE TIMING IS RELATED TO THE BEARING AND RANGES OF SAID OBJECTS, A TRANSMITTER AT SAID OBSERVATION POINT ADAPTED TO TRANSMIT A RADIO CARRIER WAVE, MEANS MODULATING SAID RADIO CARRIER WAVE BY SAID IMPLUSES AND BY SIGNALS AT SAID LOWER PREDETERMINED SCANNING FREQUENCY, A SECOND CATHODE-RAY TUBE LOCATED ON ONE OF SAID OBJECTS, A RECEIVER ON SAID OBJECT ADAPTED TO RECEIVE AND DEMODULATE SAID RADIO CARRIER WAVE TO DRIVE THEREFROM SAID IMPULSES AND SAID LOWER SCANNING FREQUENCY SIGNALS, MEANS MODULATING SAID ELECTRON BEAM BY SAID IMPULSES TO PRODUCE SPOTS ON SAID RADIAL SCAN INDICATING RANGES TO SAID OBJECTS, MEANS ROTATING SAID RADIAL SCANS OF SAID RADIATOR AND TO TRANSMIT SAID LAST PULSES TO SAID RECEIVER, AND MEANS IN SAID RECEIVER RESPONSIVE TO SAID LAST PULSES TO PRODUCE INDICATIONS ON THE SCREEN OF SAID SECOND CATHODE-RAY TUBE GIVING RANGES AND BEARINGS OF SAID OBJECTS WITH RESPECT TO SAID OBSERVATION POINT, RECORDING MEANS FOR RECORDING THE LIGHT SPOTS ON SAID FIRST PICK-UP TUBE DURING SUCCESSIVE RADIATOR SWEEPS AND HAVING MEANS TO REPRODUCE A SUCCESSION OF SUCH SPOTS WHEREBY SIGNALS REPRESENTING SUCH SUCCESSION OF SPOTS ARE TRANSMITTED TO SAID SECOND CATHODE RAY TUBE FOR REPRODUCING THEREON A SERIES OF SPOTS REPRESENTING THE COURSE OF SAID OBJECT.

Claim 2

A SYSTEM FOR INDICATING POSITION AND COURSE OF A MOVING OBJECT RELATIVE TO A STATIONARY OBSERVATION POINT COMPRISING A RADAR TRANSMITTER AND RECEIVER LOCATED AT SAID OBSERVATION POINT HAVING A ROTATING RADIATOR ADAPTED TO SWEEP THE SURROUNDING AREA AT A PREDETERMINED SWEEP FREQUENCY AND ADAPTED TO RADIATE RADAR PULSES AT A SECOND PREDETERMINED PULSE FREQUENCY AND TO RECEIVE ECHO PULSES WHOSE TIME DELAYS ARE PROPORTIONAL TO THE RANGES OF OBJECTS IN SAID AREA, SAID RECEIVER HAVING A FIRST CATHODE-RAY TUBE HAVING AN ELECTRON BEAM AND A SCREEN, MEANS DEFLECTING SAID ELECTRON BEAM LINEARLY TO SCAN SAID SCREEN REPEATEDLY AT SAID PULSE FREQUENCY AND MEANS ENHANCING SAID ELECTRON BEAM BY SAID ECHO PULSES TO PRODUCE LIGHT SPOTS ON SAID SCREEN TIMED AND SPACED IN A MANNER TO REVEAL THE BEARINGS AND RANGES RESPECTIVELY TO SAID OBJECTS, A PICK-UP TUBE POSITIONED TO RECEIVE IMAGES OF LIGHT SPOTS ON SAID CATHODE-RAY TUBE SCREEN, MEANS INCLUDING AN ELECTRON BEAM FOR SCANNING SAID IMAGE ON SAID PICKUP TUBE LINEARLY AT A PREDETERMINED FREQUENCY LOWER THAN SAID PULSE FREQUENCY, TO PRODUCE ELECTRICAL IMPULSES FROM SAID PICKUP TUBE WHOSE TIMING IS RELATED TO THE BEARING AND RANGES OF SAID OBJECTS, A TRANSMITTER AT SAID OBSERVATION POINT ADAPTED TO TRANSMIT A RADIO CARRIER WAVE, MEANS MODULATING SAID RADIO CARRIER WAVE BY SAID IMPLUSES AND BY SIGNALS AT SAID LOWER PREDETERMINED SCANNING FREQUENCY, A SECOND CATHODE-RAY TUBE LOCATED ON ONE OF SAID OBJECTS, A RECEIVER ON SAID OBJECT ADAPTED TO RECEIVE AND DEMODULATE SAID RADIO CARRIER WAVE TO DRIVE THEREFROM SAID IMPULSES AND SAID LOWER SCANNING FREQUENCY SIGNALS, MEANS MODULATING SAID ELECTRON BEAM BY SAID IMPULSES TO PRODUCE SPOTS ON SAID RADIAL SCAN INDICATING RANGES TO SAID OBJECTS, MEANS ROTATING SAID RADIAL SCANS OF SAID RADIATOR AND TO TRANSMIT SAID LAST PULSES TO SAID RECEIVER, AND MEANS IN SAID RECEIVER RESPONSIVE TO SAID LAST PULSES TO PRODUCE INDICATIONS ON THE SCREEN OF SAID SECOND CATHODE-RAY TUBE GIVING RANGES AND BEARINGS OF SAID OBJECTS WITH RESPECT TO SAID OBSERVATION POINT, RECORDING MEANS FOR RECORDING THE LIGHT SPOTS ON SAID FIRST PICK-UP TUBE DURING SUCCESSIVE RADIATOR SWEEPS AND HAVING MEANS TO REPRODUCE A SUCCESSION OF SUCH SPOTS WHEREBY SIGNALS REPRESENTING SUCH SUCCESSION OF SPOTS ARE TRANSMITTED TO SAID SECOND CATHODE RAY TUBE FOR REPRODUCING THEREON A SERIES OF SPOTS REPRESENTING THE COURSE OF SAID OBJECT.