Scintillation is a fluctuation in the amplitude of a target on a radar display. It is closely related to target glint, or wander, an apparent displacement of the target from its mean position. This effect can be caused by a shift of the effective reflection point on the target, but has other causes as well. The fluctuations can be slow (scan-to-scan) or rapid (pulse-to-pulse).[1]
It appears especially at seaside level.
Scintillation and glint are actually two manifestations of the same phenomenon and are most properly linked to one another in target modeling.[2][3]
References
^Dunn, J.H.; Howard, D.D. (September 1968). "RADAR Target Amplitude, Angle, and Doppler Scintillation from Analysis of the Echo Signal Propagating in Space". IEEE Transactions on Microwave Theory and Techniques. 16 (9): 715–728. doi:10.1109/TMTT.1968.1126776.
^Skolnik, Merrill I. (1990). Radar Handbook (2nd ed.). McGraw-Hill. ISBN0-07-057913-X.