- /* Ignore short-range reflectivity from velocity split cuts unless
- * keep_hi_prf_dz is set. The indicators for this type of
- * reflectivity are surveillance mode of 0 and elevation angle
- * below 6 degrees.
+ /* If this field is reflectivity, check to see if it's from the velocity
+ * sweep in a split cut. If so, we normally skip it since we already
+ * have reflectivity from the surveillance sweep. It is kept only when
+ * the user has turned off merging of split cuts. We skip over this
+ * field if all of the following are true: surveillance PRF number is 0,
+ * waveform is Contiguous Doppler with Ambiguity Resolution (range
+ * unfolding), and we're merging split cuts.