GPS pinpoints a location by measuring how long it takes for messages from at least three of the satellites to arrive at a receiver -- almost akin to an automatic version of the sextant measurements ...
Modern transport-category jets navigate using advanced Inertial Reference Systems (IRS) equipped with laser-ring gyros, replacing older sextant and INS methods. Position data from the IRS is combined ...
Chronicles the author's first transatlantic voyage, when he learned to navigate using a sextant, and traces how this indispensible navigational tool was used by daring mariners to explore and map the ...
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