Radar jamming simulator

Claim 1

IN A RADAR DISPLAY SIMULATOR, THE COMBINATION COMPRISING: COORDINATE SIGNAL GENERATOR MEANS FOR GENERATING COORDINATE SIGNALS REPRESENTATIVE OF TARGET POSITIONS AND OWN SHIP POSITION; A FIRST CATHODE RAY TUBE HAVING BEAM DEFLECTION MEANS AND OPERATIVELY CONNECTED TO COORDINATE SIGNAL GENERATOR MEANS TO PROVIDE DEFLECTION OF THE BEAM OF SAID FIRST CATHODE RAY TUBE TO POSITIONS ON THE FACE THEREOF CORRESPONDING TO SIMULATED NON-JAMMER TARGETS; A SECOND CATHODE RAY TUBE HAVING BEAM DEFLECTION MEANS AND OPERATIVELY CONNECTED TO SAID COORDINATE SIGNAL GENERATOR MEANS TO PROVIDE DEFLECTION AND INTESIFICATION OF THE BEAM OF THE SECOND CATHODE RAY TUBE SO THAT SAID NON-JAMMER TARGETS ARE INDICATED AS LUMINOUS SPOTS ON THE FACE OF SAID SECOND CATHODE RAY TUBE; LIGHT RESPONSIVE MEANS DISPOSED TO RECEIVE LIGHT EMITTED FROM SAID LDUMINOUS SPOTS ON SAID SECOND CATHODE RAY TUBE AND OPERATIVELY CONNECTED TO SAID FIRST CATHODE RAY TUBE SO AS TO INCREASE THE INTENSITY OF THE BEAM THEREOF IN RESPONSE TO INCREASES IN LIGHT RECEIVED BY SAID LIGHT RESPONSIVE MEANS; ROTATABLE MASK MEANS DISPOSED BETWEN THE FACE OF SAID SECOND CATHODE RAY TUBE AND SAID LIGHT RESPONSIVE MEANS, SAID MASK MEANS COMPRISING AN APERTURE;