Navigational aid

Details Navigational aid Navigational aid

1978-06-28

1979-05-15

Buczinski, S. C.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343112PT, 358103, G01S 902, H04N 700

Patent

active

041550854

ABSTRACT:
For use with a ship's radar having a plan position indicator display, a navigational aid providing a selected output signal for the radar for displaying two selected pairs of a plurality of stored pairs of parallel left and right selected navigational guide lines of different direction and of different ranges-from-ship. It includes a manual direction input switch for inputting a direction for each of the plurality of pairs of guide lines, a manual range-from-ship input switch for inputting a range-from-ship for each of the guide lines, storage for each of the input directions and their associated ranges-from-ship of the pairs of parallel left and right guide lines, a manual selection switch for selecting the output signal for the two selected pairs, and a digital display for displaying the direction and ranges-from-ship of one of the selected pair.

REFERENCES:
patent: 3188631 (1965-06-01), Birtley
patent: 3725918 (1973-04-01), Fleischer et al.
patent: 3971018 (1976-07-01), Isbister et al.
patent: 4128834 (1978-12-01), Katagi

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