The Wigner Ville time frequency analysis in conjunction with properly selected OFDM parameters is applied to evaluate the signal dynamic range performance over the low voltage power line network.
为了研究OFDM信号在低压电力线上的传输情况，运用基于维格纳分布的时频分析方法对电力线上的信号进行分析。
Then, it introduces the applications of the IF sampling in radar signal processing, and the over sampling and noise shaping techniques and FFT to improve the receiver dynamic range technology.
其次，介绍了中频采样在雷达信号处理中的应用和过采样技术及其噪声整形、FFT提高接收机动态范围的技术。
The refraction effect on positioning of the over-the-horizon radar signal is analyzed. The charts of the refractive error(elevation error and range error) are also given.
主要分析对流层的折射效应对超视距雷达信号定位的影响，并且给出相应的折射误差图（仰角误差和距离误差）；
High signal to noise ratios (SNR) long range microphone, similar to the FOM 1140, intended for operation at low acoustic signal levels and over long distances.
高信噪比的远程麦克风，类似于FOM 1140，用于低噪音信号水平和远距离的运用。
High signal to noise ratios (SNR) long range microphone, similar to the FOM 1140, intended for operation at low acoustic signal levels and over long distances.
高信噪比的远程麦克风，类似于FOM 1140，用于低噪音信号水平和远距离的运用。
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