frequency-modulation noise的意思|示意

In this thesis, a Broad Band signal generator based on noise frequency modulation for radar is studied.

本课题主要研究了对雷达信号进行干扰的宽带调频噪声信号源。

This paper presented a new counter-countermeasure method, known as two way anti frequency coherent method, to counter the noise frequency modulation disturbance.

该文针对接近白噪声的小指数调频干扰提出一种新型反干扰的方法：两路倒频相关法。

First, the generation mechanism, components and frequency characteristic of radiated noise of naval ships are studied. There exists periodical modulation for the amplitude of propeller noise.

首先讨论了舰船辐射噪声的产生机理、构成和频率特性，指出螺旋桨噪声的振幅存在周期性调制。

Simulation results show that this method can effectively excise noise frequency modulation interference and the correlation output is improved obviously, especially for the strong interference.

仿真结果表明该方法可以有效地消除干扰，使相关输出得到显著改善，尤其是对强干扰效果更佳。

A single carrier modulation scheme suitable for use in high frequency communication systems is provided that achieves improved residual frequency error and phase noise estimation.

提供了一种实现改进残留频率误差和相位噪声估算的、适合于在高频通信系统中使用的单载波调制方案。

According to frequency spectrum transfer characteristic of modulation and demodulation, we think the position measurement noise is Gaussian narrowband noise.

根据调制解调的频谱转移特性，提出了有效位移噪声是高斯窄带噪声。