signal filtering

On the basis of different signals and sampling frequency, after sample pretreatment, this text go on signal aftertreatment by method of mixed filtering which is combined by recursion average filtering and median filtering and wavelet filtering technology.

根据不同的信号以及采样频率，本文在对原始采样信号经过预处理后分别采用递推平均滤波与中值滤波相结合的混合滤波法和小波包滤波技术进行数字信号的再处理。

M estimation is a kind of robust estimator which is used widely in signal filtering.

M估计器是一种广泛应用于信号滤波的稳健性估计器。

The frequency domain algorithm of quadrature interpolation and pulse compression in radar signal processing is derived. Segmental filtering method is studied in view of frequency domain filtering processing of long signal sequence so that optimum segment length is achieved;

推导了雷达信号处理中正交插值和脉冲压缩处理的频域算法，针对长信号序列的频域滤波处理，研究了分段滤波方法，得出了最佳分段长度。

Results Random noise of the signal is depressed and ventricular late potential is enhanced after time sequence adaptive filtering.

结果时序自适应滤波器能有效地降低信号中的随机噪声，滤波后心室晚电位信号得到了相对增强。

The PID program is compiled, Software module design for hybrid maglev system, including: initialization module, control algorithm module, digital signal filtering module, A/ D converting module and PWM module.

并编写了PID控制程序，混合悬浮系统中各软件功能模块设计包括：初始化模块、控制算法模块、ⅡR数字滤波模块、A/D数据采集模块、PWM输出控制模块等。

System hardware and software design idea is presented, the analog front-end chip in hardware is used for sensor signal pre-processing, FPGA is performed signal processing, such as filtering, signal pick-up etc, the analog and digital blocks are connected with bridges.

硬件中的模拟前端器件用于获取传感器信号并进行预处理，数字部分的现场可编程门阵列（FPGA）用于数字信号处理，如滤波、信号提取等，模拟模块与数字模块通过桥路连接。

By means of A/ D conversion and signal filtering to digitize the simulative signal, the realization of digital management in ultrasonic diagnosis is discussed, and through call of API of Windows, the digital management of ultrasonic diagnosis is realized.

讨论了通过A/D转换和信号滤波将模拟信号数字化，通过Windows的API调用，实现超声诊断的图文数字化管理。

After processed by narrow band com-plex filtering or narrow band recurrence filtering and Hilbert trans-formation, real signal is transformed into narrow band complex sig-nal, whose instantaneous spectrum is then used to solve for tensor impedance element.

本文通过对记录上的实信号做窄带复数滤波或窄带递归滤波和希尔伯特变换，转换成窄带复信号，再由复信号的瞬时谱求出张量阻抗元素。

Microwave photonic filters are the key component in the system of photonic signal processing of microwave signals. It uses optical fiber and integrated photonic devices to carry out the filtering of clutter and noise from the wanted signal.

微波光子学滤波器作为全光微波信号处理系统的核心器件，利用光纤和光器件使有用的微波信号通过而抑制噪声和无用的微波频率信号。

According to the spatial character of underwater acoustic signal in far field, a virtual channel is constructed from the observed channel by time delay and filtering. So one single channel is extended to multiple channels, and then the standard BSS methods can be applied.

该方法依据水声信号远场的空间分布规律，通过将单观测通道信号延时和滤波的方法构造虚拟通道，使单通道转化为多通道，以实现单通道的盲源分离。

The convertibility of this decomposition indicates that it can be used for the time domain signal filtering and feature extraction.

希尔伯特变换可有效地对时域信号进行解调，其实质是对原始信号作一次特殊的滤波。

Signal filtering with given frequency using optimum matching frequency method

采用最优频率匹配法实现信号的频段滤波处理

The paper discussed the application of wavelet based thresholding denoising and Wiener filtering for removal of noise in signal.

讨论了基于小波的阈值去噪方法和Wiener滤波方法在信号去噪中的应用。

On the basis of analyzing and improving the dramatic characteristic of fluid drive system of the platform, designing the computer control system of the electro-hydraulic servo control system, and programming the main control program which control the platform. At the same time, filtering signal.

在分析和提高模拟平台液压驱动系统动态性能的基础上，对模拟平台电液伺服控制系统进行计算机控制系统设计，编制了主控制平台运动的主控制程序，并对控制系统进行信号滤波。