Doppler navigation system with reference signal source diversity

Details Doppler navigation system with reference signal source diversity Doppler navigation system with reference signal source diversity

1976-12-20

1977-12-13

Wilbur, Maynard R.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343106D, 343854, 343108M, H04B 700

Patent

active

040632423

ABSTRACT:
A Doppler Radio Navigation beacon with multi-element reference and main commutated arrays. The reference signal is programmed among the reference array elements irregularly to provide spatial diversity to the reference signal to eliminate or substantially reduce reference masking effects in certain multi-path situations (as observed at a remote receiving station such as on an aircraft on landing approach deriving angle information from said beacon). A similar irregular element excitation program is imposed on the normal array preserving coherence in the relative radiator movement (during commutation) between reference and main arrays.

REFERENCES:
patent: 3728729 (1973-04-01), Overbury

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