Aircraft collision warning system
First Claim
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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-
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1 Claim
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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-
- A SOURCE OF CARRIER FREQUENCY ENERGY;
Specification