Glossary Item

Frequency Distance of Arrival (FDOA)

Frequency Difference of Arrival (FDOA) is a technique for estimating the location of a moving radio emitter based on Doppler frequency shift observed from multiple location points. The FDOA emitter target must be in relative motion with respect to each observation point. Time Difference of Arrival (TDOA) and FDOA are sometimes used together to improve location accuracy.

Reference- DHS Counter-UAS Technology Guide

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