Known Problems: Ground Clutter

Under conditions of fast low-level winds, the strength of ground clutter signals can excede that of the atmospheric returns at certain altitudes - notably at around 2.5, 3.0 and 7.0 km. Since these ground clutter signals tend to persist over many hours, they are accepted by the time-continuity (reliability) algorithm used in the version-1 signal processing. The version-2 signal processing is effective at blanking these regions, but clearly leaves data gaps.

This problem does not affect version-0 or version-3 data products. Version-3 data products are due to be made available in early 2005.