Aircraft collision warning system

• US 3,114,147 A
• Filed: 08/04/1959
• Issued: 12/10/1963
• Est. Priority Date: 08/04/1959
• Status: Expired due to Term

• Current Assignee: John A. Kuecken
• Original Assignee: John A. Kuecken
• Inventors: Kuecken, John A.
• Application Number:
  US03/831,571
• Time in Patent Office: 1,589 Days
• US Class Current: 342/29
• CPC Class Codes: G01S 13/933 of aircraft or spacecraft

Claims

1. IN COMBINATION, A COLLISION WARNING SYSTEM COMPRISING:

A SOURCE OF CARRIER FREQUENCY ENERGY;

A SOURCE OF SINUSOIDAL SIGNAL;

A MODULATOR FOR FREQUENCY-MODULATING SAID ENERGY WITH SAID SIGNAL;

MEANS FOR RADIATING SAID FREQUENCYMODULATED ENERGY TOWARD A MOVING TARGET;

MEANS FOR RECEIVING REFLECTIONS OF SAID ENERGY FROM SAID MOVING TARGET;

MEANS FOR COMPARING THE MEDIAN FREQUENCY OF SAID RADIATED ENERGY WITH SAID REFLECTED ENERGY, AND FOR DERIVING A VOLTAGE PROPORTIONAL TO THE DIFFERENCE BETWEEN THE MEDIAN FREQUENCY OF SAID RADIATED ENERGY AND THE FREQUENCY OF SAID REFLECTED ENERGY;

MEANS FOR COMPARING THE PHASE OF SAID SIGNAL WITH THE PHASE OF THE MODULATION SIGNAL OF SAID REFLECTED ENERGY, AND FOR DERIVING A VOLTAGE PRO-