Radar target simulator

Claim 1

THE METHOD OF ADAPTING INSTALLED RADAR SYSTEMS TO PRESENT SIMULATED MOVING TARGETS COMPRISING THE STEPS OF: PROVIDING INPUT SIGNALS REPRESENTATIVE OF SIMULATED TARGET MOTION IN AZIMUTH AND ELEVATION; COMBINING ANTENNA AZIMUTH AND SIMULATED TARGET AZIMUTH INFORMATION INTO A FIRST GRID CONTROL SIGNAL; COMBINING ANTENNA ELEVATION AND SIMULATED TARGET ELEVATION INFORMATION INTO A SECOND GRID CONTROL SIGNAL; SUPERIMPOSING ON SAID FIRST AND SECOND GRID CONTROL SIGNALS A SIGNAL REPRESENTATIVE OF RADAR BEAM CONICAL REFERENCE; DISPLACING SAID FIRST AND SECOND GRID CONTROL SIGNALS NINETY DEGREES OUT OF PHASE; CONTROLLING THE GRIDS OF RESPECTIVE VACUUM TUBES RECEIVING SAID FIRST AND SECOND SIGNALS SO AS TO FORM ONE END OF A GATE SIGNAL; CONTROLLING THE CATHODES OF SAID VACUUM TUBES SO AS TO FORM THE OTHER END OF A GATE SIGNAL; AND COMBINING THE RESPECTIVE GATE SIGNALS TO FORM A TARGET SIGNAL GATE WHEREBY TARGET SIGNALS ARE PERMITTED TO PASS WHEN SAID GATE SIGNALS ARE IN COINCIDENCE, AND TARGET ERROR TO THE RIGHT OR LEFT OF THE RADAR BEAM CONE IS INDICATED BY IN-PHASE OR OUT-PHASE RELATIONSHIP OF GATE MOTION WITH RESPECT TO ONE PHASE OF THE RADAR BEAM CONICAL REFERENCE SIGNAL; AND TARGET ERROR ABOVE OR BELOW THE RADAR BEAM CONE IS INDICATED BY IN-PHASE OR OUT-OF-PHASE RELATIONSHIP OF GATE MOTION WITH RESPECT TO THE 90 DEGREE PHASE OF THE CONICAL REFERENCE SIGNAL.

Claim 2

THE METHOD OF ADAPTING INSTALLED RADAR SYSTEMS TO PRESENT SIMULATED MOVING TARGETS COMPRISING THE STEPS OF: PROVIDING INPUT SIGNALS REPRESENTATIVE OF SIMULATED TARGET MOTION IN AZIMUTH AND ELEVATION; COMBINING ANTENNA AZIMUTH AND SIMULATED TARGET AZIMUTH INFORMATION INTO A FIRST GRID CONTROL SIGNAL; COMBINING ANTENNA ELEVATION AND SIMULATED TARGET ELEVATION INFORMATION INTO A SECOND GRID CONTROL SIGNAL; SUPERIMPOSING ON SAID FIRST AND SECOND GRID CONTROL SIGNALS A SIGNAL REPRESENTATIVE OF RADAR BEAM CONICAL REFERENCE; DISPLACING SAID FIRST AND SECOND GRID CONTROL SIGNALS NINETY DEGREES OUT OF PHASE; CONTROLLING THE GRIDS OF RESPECTIVE VACUUM TUBES RECEIVING SAID FIRST AND SECOND SIGNALS SO AS TO FORM ONE END OF A GATE SIGNAL; CONTROLLING THE CATHODES OF SAID VACUUM TUBES SO AS TO FORM THE OTHER END OF A GATE SIGNAL; AND COMBINING THE RESPECTIVE GATE SIGNALS TO FORM A TARGET SIGNAL GATE WHEREBY TARGET SIGNALS ARE PERMITTED TO PASS WHEN SAID GATE SIGNALS ARE IN COINCIDENCE, AND TARGET ERROR TO THE RIGHT OR LEFT OF THE RADAR BEAM CONE IS INDICATED BY IN-PHASE OR OUT-PHASE RELATIONSHIP OF GATE MOTION WITH RESPECT TO ONE PHASE OF THE RADAR BEAM CONICAL REFERENCE SIGNAL; AND TARGET ERROR ABOVE OR BELOW THE RADAR BEAM CONE IS INDICATED BY IN-PHASE OR OUT-OF-PHASE RELATIONSHIP OF GATE MOTION WITH RESPECT TO THE 90 DEGREE PHASE OF THE CONICAL REFERENCE SIGNAL.