<?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">aerial photogrammetry</topic></authority><related type="broader"><topic>photogrammetry</topic></related><variant type="other"><topic>aerial photographic surveying</topic></variant><variant type="other"><topic>photogrammetry, aerial</topic></variant> <note xml:lang="en"><![CDATA[ Technique of using photographs to measure, survey, or map the Earth's surface, specifically employing aerial photographs, which are photographs obtained by cameras mounted on aircraft, rockets, or Earth-orbiting satellites and other spacecraft. The technique typically uses an overlapping series of photographs taken from an aircraft following a systematic flight pattern at a fixed altitude. ]]></note></mads>