Triangulation

Triangulation was the process of determining a location utilising at least two sensors. (TV: Warriors' Gate ^[+]Loading...["Warriors' Gate (TV story)"], PROSE: Tears of the Oracle ^[+]Loading...["Tears of the Oracle (novel)"]) Multiple tracking stations, or even vehicles like vans could be used to triangulate. (PROSE: No Future ^[+]Loading...["No Future (novel)"], TV: The Ambassadors of Death ^[+]Loading...["The Ambassadors of Death (TV story)"])

By maintaining radio silence it made it impossible to triangulate. (PROSE: The Janus Conjunction ^[+]Loading...["The Janus Conjunction (novel)"])

After the Doctor's TARDIS landed in an apple tree in 1666 the Fourteenth Doctor declared that he "just needs to triangulate". (TV: Wild Blue Yonder ^[+]Loading...["Wild Blue Yonder (TV story)"]

During the 1970s Mars Probe 7 situation Vorograd, Nancy, France and Haystack assisted in triangulation of the message being sent from Earth to the probe. (TV: The Ambassadors of Death ^[+]Loading...["The Ambassadors of Death (TV story)"])

John Benton used triangulation of radio signals to determine the location of a Zygon spacecraft, locating it to a quarry near Brentford in the latter 20th century. (TV: Terror of the Zygons ^[+]Loading...["Terror of the Zygons (TV story)"])

In 2007 the Tenth Doctor constructed a device to triangulate the location of the "ghosts" that had been manifesting on Earth. (TV: Army of Ghosts ^[+]Loading...["Army of Ghosts (TV story)"])

After using the Immortality Gate to create as Master Race in 2009 the Master intended to utilise all "six billion" to triangulate the location of the drum beats that had so obsessed him. (TV: The End of Time ^[+]Loading...["The End of Time (TV story)"])

In 2019 the Thirteenth Doctor used Yasmin Kahn's phone which contained Lin's number in her TARDIS to triangulate Lin's location, and the Dalek's. (TV: Resolution ^[+]Loading...["Resolution (TV story)"])