Dwell time (TD) in surveillance radar is the time that an antenna beam spends on a target.
[1] The dwell time of a 2D–search radar depends predominantly on Dwell time is calculated by: A block of constant PRF and coherently phased RF pulses, is referred to as a coherent dwell interval or coherent dwell time.
[2] This article incorporates text by Christian Wolff available under the CC BY-SA 3.0 license.