A traffic collision avoidance system (TCAS), configured to transmit a wide transmit beam of approximately 180 degrees. The wide transmit beam may be, for example at the interrogation frequency or a transponder response frequency. The TCAS of this disclosure includes a directional antenna system with two signal input ports and two or more antenna elements. In some examples, the direction of the 180 degree beam may be controlled by the phase relationship between the signals input to the two port antenna. In other examples, the direction of the transmit beam from the antenna system is predefined to be in two complementary directions (e.g., forward and aft).


    Access

    Download


    Export, share and cite



    Title :

    SIMPLIFIED TCAS SURVEILLANCE


    Contributors:

    Publication date :

    2021-10-21


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    H04B TRANSMISSION , Übertragung / G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS / H01Q Antennen , ANTENNAS, i.e. RADIO AERIALS



    SIMPLIFIED TCAS SURVEILLANCE

    BRANDAO RUY C | European Patent Office | 2023

    Free access

    Simplified TCAS surveillance

    BRANDAO RUY C | European Patent Office | 2021

    Free access

    Development of surveillance techniques for TCAS II

    Harman, W.H. | Tema Archive | 1984