Terrain avoidance system

Abstract

Abstract 1. A TERRAIN AVOIDANCE RADAR SYSTEM FOR AIRCRAFT, COMPRISING AN ANTENNA FOR TRANSMITTING AT A PREDETERMINED REPETITION RATE PULSES OF ELECTROMAGNETIC ENERGY TO BE REFLECTED FROM BODIES IN THE PATH OF THE TRANSMITTED PULSE ENERGY AND FOR RECEIVING THE REFLECTED PULSES, MEANS FOR CYCLICALLY MOVING SAID ANTENNA THROUGH A PREDETERMINED VERTICAL ANGLE WITH RESPECT TO THE FLIGHT VECTOR OF THE AIRCRAFT AND AT A RATE CONSIDERABLY LESS THAN THE REPETITION RATE OF SAID PULSES, MEANS TO GENERATE A SIGNAL INDICATIVE OF THE VERTICAL SCAN ANGLE OF THE ANTENNA, MEANS RESPONSIVE TO SAID SIGNAL INDICATIVE OF THE VERTICAL SCAN ANGLE TO DIVIDE THE VERTICAL SCAN PROFILE OF SAID ANTENNA INTO AT LEAST AN UPPER SECTOR, A LOWER SECTOR AND A MIDDLE SECTOR, SAID MIDDLE SECTOR BEING CONTIGUOUS WITH SAID UPPER AND LOWER SECTOR, MEANS FOR PRODUCING A FIRST ELECTRICAL SIGNAL OF A PREDETERMINED CHARACTER WHEN A REFLECTED PULSE SIGNAL IS RECEIVED BY SAID ANTENNA FROM AT LEAST ONE OBJECT AT ANY POINT IN SAID UPPER SECTOR, MEANS FOR PRODUCING A SECOND ELECTRICAL SIGNAL OF A DIFFERENT PREDETERMINED CHARACTER WHEN NO REFLECTED PULSE SIGNALS ARE RECEIVED BY SAID ANTENNA FROM OBJECTS IN SAID UPPER SECTOR AND SAID MIDDLE SECTOR AND A REFLECTED PULSE SIGNAL IS RECEIVED BY SAID ANTENNA FROM AT LEAST ONE OBJECT AT ANY POINT IN SAID LOWER SECTOR, AND MEANS FOR PRODUCING A THIRD ELECTRICAL SIGNAL OF A THIRD PREDETERMINED CHARACTER WHEN A REFLECTED PULSE SIGNAL IS RECEIVED BY SAID ANTENNA FROM AT LEAST ONE OBJECT AT ANY POINT IN SAID MIDDLE SECTOR AND NO REFLECTED PULSE SIGNAL IS RECEIVED BY SAID ANTENNA FROM AN OBJECT IN SAID UPPER SECTOR.

Inventors

• 👤 Bartow Bechtel

Bibliographic Details