European Facility For Airborne Research

European Facility For Airborne Research July 5, 2022, 00:33

Terms - I



IAGOS: In-service Aircraft for a Global Observing System. IAGOS is a new European Research Infrastructure conducting longterm observations of atmospheric composition, aerosol and cloud particles on a global scale from commercial aircraft of internationally operating airlines.

image: A two dimensional grid of data. A more complete definitions is "an ordered set of data arranged in a way that when displayed represents the pattern of the measured variable through the earth surface".

imaging spectrometer: An array sensor capable of imaging in as many as several hundred discrete spectral bands simultaneously. Also called a hyperspectral scanner.

IMU: Inertial Measurement Unit. An IMU measures the rate and direction of motions and is used on sensor platforms to calculate its movement (roll, pitch, yaw). The IMU data is then used for georeferencing of remote sensing data.

INS: Inertial navigation system. See IMU.

in situ: Latin for “in original place”. Refers to measurements made at the actual location of the object or material measured.

instantaneous field-of-view (iFOV): The solid angle through which a detector or pixel is sensitive to radiation, commonly expressed in milliradians.

instrument operator: Any institution offering access to hyperspectral instruments operated over an area of interest determined by a user or a data provider.

IDL: The Interactive Data Language (IDL) is a data analysis language popular for science applications.

in-flight calibration: Validation of band centre wavelengths and radiometric calibration of airborne sensors based on overflights and ground measurements.

IR: Infrared - Pertaining to or designating the portion of electromagnetic spectrum with wavelengths from the red end of the visible spectrum to the microwave portion of the spectrum, or from 0.7 µm to 1mm.

irradiance: The measure of radiant flux incident on a surface in units of power or energy per unit time.

ISARRA: International Society for Atmospheric Research using Remotely piloted Aircraft. ISARRA is being organized by a group of volunteer researchers as a non-fee member-based organization. Its aim is to provide a forum for the exchange of knowledge, experience, and ideas on the various aspects of atmospheric and related environmental research using remotely piloted aircraft.

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