These radar systems are referred to as over the horizon (OTH) radar systems, capable of viewing targeteyond the point where the majority of modern radar systems are constrained by the radar horizon.

• 这一类型的雷达系统就是超水平面（OTH）雷达系统，它们可以侦测到当今绝大多数雷达系统受雷达水平面限制而无法侦测的空间。