Windowing provides best spatial distance resolution for revealing closely spaced events, but the side lobes close to any major event (large reflection) may mask smaller events which are close to the major event. Excellent choice if you suspect multiple faults of similar amplitudes close together.

 

This Distance To Fault graph has Return Loss (dB) on the vertical scale (y‑axis) and distance in feet on the horizontal scale (x‑axis).

This view of Rectangular Windowing shows the maximum side lobe display and the greatest waveform resolution.

 

This Distance To Fault graph has Return Loss (dB) on the vertical scale (y‑axis) and distance in feet on the horizontal scale (x‑axis).

This view of Nominal Side Lobe Windowing shows less side lobe resolution than Rectangular Windowing and more side lobe resolution than Low Side Lobe Windowing. This level of windowing displays intermediate resolution.

 

This Distance To Fault graph has Return Loss (dB) on the vertical scale (y‑axis) and distance in feet on the horizontal scale (x‑axis).

This view of Low Side Lobe Windowing shows less side lobe resolution than Nominal Side Lobe Windowing and more side lobe resolution than Minimum Side Lobe Windowing. This level of windowing displays intermediate resolution.

This Distance-To-Fault graph has Return Loss (dB) on the vertical scale (y‑axis) and distance in feet on the horizontal scale (x‑axis).

This view of Minimum Side Lobe Windowing shows less side lobe resolution than Low Side Lobe Windowing and displays the lowest side lobe and waveform resolution.

For the Kaiser-Bessel window, a larger Beta value leads to lower side lobes, but a wider main lobe width (and hence poorer resolution). For the Dolph-Chebyshev window, the side lobe level is parameterized explicitly (in absolute dB) and a larger value leads to a wider main lobe width as well.