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首页> 外文期刊>The ITEA Journal >Multipath Fading Cancellation: Using a Tap Delay to Improve Signal Spectrum
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Multipath Fading Cancellation: Using a Tap Delay to Improve Signal Spectrum

机译：多径衰落消除：使用抽头延迟来改善信号频谱

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摘要

Multipath fading affects communication and telemetry signals. Multipath propagation distorts receive signal characteristics, primarily signal amplitude. This distortion is the result of path length differences, physical changes in the transmitting medium, reflection, and diffraction. Multipath fading is the sum of these effects - it can be fast" or "slow" fading. Multipath fading reduces the signal-to-noise ratio, resulting in degraded communication or data link capability. An example of this phenomenon on the battlefield is unclear video pictures and subsequent loss of target identification capability. In this article, we investigate the feasibility of using a two-tap delay signal-processing approach to improve signal spectrum purity and illustrate it on example data. This test method is "digital" tap delay; all data has been digitized. The primary emphasis of this article is to develop the concept.
机译：多径衰落会影响通信和遥测信号。多径传播失真会接收信号特征，主要是信号幅度。这种失真是路径长度差异，传输介质中的物理变化，反射和衍射的结果。多径衰落是这些效应的总和-可以是“快”衰落或“慢”衰落。多径衰落会降低信噪比，从而导致通信或数据链路能力下降。这种现象在战场上的例子尚不清楚视频图片和随后的目标识别能力丧失。本文中，我们研究了使用两次抽头延迟信号处理方法来提高信号频谱纯度的可行性，并在示例数据上进行了说明。 ;所有数据均已数字化，本文的主要重点是发展这一概念。

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