<?xml version="1.0" encoding="utf-8"?><mads xmlns="http://www.loc.gov/mads/" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/mads/
mads.xsd"><authority><topic authority="http://AATesaurus.cultura.gencat.cat/aat/getty_en">radar</topic></authority><related type="narrower"><topic>ground-penetrating radar</topic></related><related type="narrower"><topic>synthetic aperture radar</topic></related><related type="broader"><topic>exploring and investigating techniques</topic></related><variant type="other"><topic>radio assisted detection and ranging</topic></variant><variant type="other"><topic>radio detecting and ranging</topic></variant><variant type="other"><topic>radio detection and ranging</topic></variant><variant type="other"><topic>ranging, radio assisted detection and</topic></variant><variant type="other"><topic>ranging, radio detecting and</topic></variant><variant type="other"><topic>ranging, radio detection and</topic></variant> <note xml:lang="en"><![CDATA[ Technique using beamed, reflected, and timed radio waves for determining the distance to and direction of objects. ]]></note></mads>