Dwell time (''T_D'') in surveillance

radar Radar is a system that uses radio waves to determine the distance ('' ranging''), direction ( azimuth and elevation angles), and radial velocity of objects relative to the site. It is a radiodetermination method used to detect and track ...

is the time that an antenna beam spends on a target. The dwell time of a 2D–search radar depends predominantly on * the antenna's horizontal beam width ''θ_AZ'', and * the turn speed ''n'' of the antenna (in rotations per minute or rpm, i.e. 360 degrees in 60 seconds = multiplied by a factor of 6). Dwell time is calculated by: :

T_D = \frac \quad\quad \text

A block of constant PRF and coherently phased RF pulses, is referred to as a coherent dwell interval or coherent dwell time.P.E. Rademacher; B.H. Cantrell; G.C. Tavik
Clutter filtering and processing techniques for EMI detection and angle measurement in pulse Doppler radars
2021,

References

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