Reflections off of the ocean surface leads to multi-path effects when receiving radar signals from high altitude space.
在高空接收从海上发射的雷达信号时,由于海面的反射作用,信号将会出现多径效应。
参考来源 - 基于FRFT的线性调频多径信号分离算法·2,447,543篇论文数据，部分数据来源于NoteExpress
Underground wireless signal transmission belongs to the transmission of limited space, and its multi-path effects are more serious.
井下无线信号的传输属于有限空间的信号传输，多径效应的影响是比较严重。
For the problem of multi-path effects, firstly the low-angle target tracking model of sea-surface is built up, and the geometric relationship among target, image and radar is analyzed.
针对多径效应的问题，首先建立海面低空目标的跟踪模型，分析了目标、镜像和雷达之间几何关系。
OFDM has the ability of transforming the frequency-selective channel into a collection of parallel flat-fading subchannels and therefore can be adopted in MIMO systems to combat multi-path effects.
OFDM技术可以把频率选择性衰落的信道转化成一组正交的平坦衰落的信道，因此可将OF DM技术应用在MIMO系统中来克服多径衰落的影响。
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