Source: wikibot/radio-occultation
= Radio occultation
{wiki=Radio_occultation}
Radio occultation is a remote sensing technique used to study the Earth's atmosphere and other planetary atmospheres. It involves the measurement of radio signals transmitted by satellites as they pass behind a planet (or the Earth) relative to a receiving station. When a satellite's signal passes through the atmosphere, it is refracted (bent) by the atmospheric layers due to changes in temperature, pressure, and density.