Shoran Indicator

4-4-320

Indicator (in Shoran)

A circular sweep cathode ray display, used on the vessel.

The 360 degrees arc of the sweep is, by applying the proper frequency derived from the time base, made to be equivalent to various distances, for example, 1 mile, 10 miles, 100 miles.

A marker pulse related to the transmitted pulse and the received pulse are displayed as deflections of the sweep so that the distance from ship to shore station is directly indicated.

By shifting the transmitted pulse by a known amount the two displayed pulses can be superimposed for the more accurate measurement of distance.

Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)

English