Ground proximity warning system with time and altitude based...

Details Ground proximity warning system with time and altitude based... Ground proximity warning system with time and altitude based...

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G01S 11/00 (2006.01) G01C 5/00 (2006.01) G01S 13/94 (2006.01) G08B 23/00 (2006.01)

Patent

CA 1205167

GROUND PROXIMITY WARNING SYSTEM WITH TIME AND ALTITUDE BASED MODE SWITCHING Abstract To increase the effectivity of warnings and to decrease nuisance warnings in a ground prox- imity warning system having several modes of oper- ation, the switching from one mode to another is done as a function of radio altitude and time. In addi- tion, in a ground proximity warning system where a warning signal is generated in accordance with a pre- determined relationship between flight parameters, one or more of these parameters can be varied as a func- tion of radio altitude and time in order to, for ex- ample, increase the altitude above ground as a func- tion of radio altitude and time from take-off that a terrain clearance warning is generated or to decrease as a function of radio altitude and time, the radio altitude below which a negative climb after take-off warning is generated.

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