Which of the following is NOT a type of imagery used in GEOINT?

Doppler is not considered a type of imagery used in Geospatial Intelligence (GEOINT). Instead, it refers to various techniques that utilize the Doppler effect, often related to the measurement of changes in frequency or wavelength of signals in motion, which is not a method of capturing visual data for geospatial analysis.

In contrast, optical imagery involves capturing images in the visible spectrum using cameras or satellites, allowing for detailed visual representation of the Earth’s surface. Infrared imagery captures energy at infrared wavelengths, useful for detecting heat and vegetation analysis, while multispectral imagery gathers data across multiple wavelengths, enabling more comprehensive analyses across various spectral bands, which can enhance the ability to discern different land types, materials, or changes in the environment. Each of these methods serves a specific purpose in geo-spatial analysis, while Doppler does not fit into the category of imagery used directly for GEOINT applications.