초록 ▼

The present invention is a method of deriving a ground speed of an aircraft on a descent along a flight path. A vertical speed signal is produced as a function of an altitude signal and a vertical acceleration signal. The vertical speed signal is transformed to a nominal ground speed signal based up

The present invention is a method of deriving a ground speed of an aircraft on a descent along a flight path. A vertical speed signal is produced as a function of an altitude signal and a vertical acceleration signal. The vertical speed signal is transformed to a nominal ground speed signal based upon a glide slope defined by a glide slope beam. A correction is produced based on a glide slope deviation rate representative of deviation of the aircraft from the glide slope. The nominal ground speed signal is corrected with the correction to produce a corrected ground speed signal. The corrected ground speed signal is filtered with a horizontal acceleration signal and a runway heading signal to produce a smoothed ground speed signal.

대표청구항 ▼

1. A method of deriving a ground speed of a descending aircraft, the method comprising:producing a smoothed vertical speed signal based upon an altitude signal and a vertical acceleration signal; transforming the smoothed vertical speed signal to a ground speed signal based upon glide slope data; an

1. A method of deriving a ground speed of a descending aircraft, the method comprising:producing a smoothed vertical speed signal based upon an altitude signal and a vertical acceleration signal; transforming the smoothed vertical speed signal to a ground speed signal based upon glide slope data; and producing a smoothed ground speed signal based upon the ground speed signal and a horizontal acceleration signal.