  In this work, lateral displacements of transmitted and reflected spin waves
at a 360 degree domain wall (360DW), which is referred to as the spin-wave
Goos-H\"{a}nchen effect (SWGHE), are systematically investigated in magnetic
heterostructures with perpendicular easy/hard axis and wall-extension
direction. Similar to the counterpart at heterochiral interfaces, the
interfacial Dzyaloshinskii-Moriya interactions (IDMI) originating from a
heavy-metal substrate is important for the emergence of SWGHE. More
interestingly, the SWGHE can even survive in ferromagnets with biaxial
anisotropy (either intrinsic or caused by shape anisotropy) in the absence of
IDMI due to the unique 360DW-induced potentials which are distinct to the
well-known P\"{o}schl-Teller ones. Numerics shows that these lateral
displacements are generally fractions of the spin-wave wavelength. They can be
further enhanced by an array of well-separated 360DWs thus provide a large
variety for spin-wave manipulation.
