Radar system for determining the relative direction of two objects moving in space

• US 3,328,794 A
• Filed: 08/19/1949
• Issued: 06/27/1967
• Est. Priority Date: 08/19/1949
• Status: Expired due to Term

• Current Assignee: Baltzer, Otto J.
• Original Assignee: Baltzer, Otto J.
• Inventors: Baltzer, Otto J.
• Application Number:
  US03/111,313
• Time in Patent Office: 6,521 Days
• US Class Current: 342/62
• CPC Class Codes: F41G 7/2246 Active homing systems, i.e. comprising both a transmitter and a receiver
• CPC Class Codes: F41G 7/2286 using radio waves
• CPC Class Codes: G01S 1/02 using radio waves G01S19/00 takes precedence

Claims

1. AN ANTENNA SCANNING SYSTEM FOR A MOVING MISSILE COMPRISING A PAIR OF MICROWAVE ANTENNAS, SAID ANTENNAS BEING SPACED APART A RELATIVELY LARGE DISTANCE IN COMPARISON TO THE DIMENSION THEREOF, A COMMON DETECTOR FOR SAID ANTENNAS, WAVE GUIDE SECTIONS RESPECTIVELY CONNECTING SAID ANTENNAS TO SAID DETECTOR, A GYRO-STABILIZED PHASE SHIFTING DEVICE IN ONE OF SAID WAVE GUIDE SECTIONS FOR MAINTAINING THE RADIATION PATTERN OF SAID ANTENNAS INDEPENDENT OF ANY ANGULAR MOVEMENT OF THE MISSILE, A SECOND CONTINUOUSLY VARIABLE PHASE SHIFTER IN THE OTHER WAVEGUIDE SECTION, AND MEANS FOR OPERATING SAID SECOND PHASE SHIFTER.

4. A SYSTEM FOR DETERMINING THE CHANGE IN ANGULAR POSITION OF AN OBJECT IN SPACE RELATIVE TO A GUIDED MISSILE, COMPRISING A SOURCE OF RADIO FREQUENCY SIGNALS ILLUMINATING SAID OBJECT, A RECEIVER CARRIED BY SAID MISSILE RECEIVING SIGNALS REFLECTED FROM SAID OBJECT, SAID RECEIVER INCLUDING AT LEAST A PAIR OF MICROWAVE ANTENNAS, SAID ANTENNAS BEING SPACED APART A RELATIVELY LARGE PHYSICAL DISTANCE IN COMPARISON TO THE DIMENSIONS OF THE ANTENNA, A COMMON DETECTING DEVICE, A PAIR OF WAVE GUIDES CONNECTING SAID ANTENNAS TO SAID DETECTING DEVICE, A PHASE SHIFTING DEVICE IN ONE OF SAID WAVE GUIDES, A GYROSCOPE COUPLED TO AND CONTROLLING SAID PHASE SHIFTER FOR MAINTAINING THE RADIATION PATTERN OF SAID ANTENNAS INDEPENDENT OF ANY TURNING MOTION THE MISSILE MIGHT MAKE, A SECOND, ROTATING, PHASE SHIFTING DEVICE DISPOSED IN SAID OTHER WAVE GUIDE SECTION FOR CAUSING THE INTERFERENCE RADIATION PATTERN OF SAID ANTENNAS TO OSCILLATE ABOUT A FIXED BEARING, A SQUARE WAVE VOLTAGE SOURCE COUPLED TO AND CONTROLLING THE ACTION OF SAID ROTATING PHASE SHIFTER, A COMBINING CIRCUIT, MEANS FOR SUPPLYING THE SIGNAL DERIVED IN SAID COMMON NON-LINEAR DETECTING DEVICE TO SAID COMBINING CIRCUIT ALONG WITH A SIGNAL FROM SAID SQUARE WAVE VOLTAGE SOURCE, AND A THIRD PHASE SHIFTER DISPOSED IN THE WAVE GUIDE CONTAINING SAID ROTATING PHASE SHIFTER AND COUPLED TO AND CONTROLLED BY THE OUTPUT OF SAID COMBINING CIRCUIT, SAID COMBINING CIRCUIT ALSO BEING COUPLED TO ENERGIZE THE CONTROL SURFACES OF SAID MISSILE.