signal value

In this paper, phase variation value is defined with help of calculating error energy of adjacent code cells of MPSK signal, so that recognition of MPSK signal phase encoding rule can be realized.

本文通过计算多相编码信号（MPSK）相邻码元间的误差能量的方法来确定相位突变值，从而达到对MPSK信号相位编码规律的识别。

The changing relation between the two restricts the threshold value of signal-to-noise ratio for seismic prospecting.

二者的变化关系制约着地震勘探的信噪比临界门限值。

The article introduces the signal value collect circuit triggered with the arbitrary pulse. By the computer, the circuit made signal collect process with signal arriving at time, then the circuit increases collect frequency and did not occupy memory with empty pulse.

介绍的随机脉冲触发峰值采集电路，在脉冲到来时自动触发进行采样，使信号采样过程和信号到来时间实时配合，在计算机的控制下，提高了采样频率，又不因空脉冲而占据内存。

By peak value sampling the information of baseband signal can be obtained from an AM signal directly. By frequency conversion sampling the carrier wave's frequency of a PSK signal can be cut down.

对AM信号进行峰值采样可以直接获得基带信号的信息，对PSK信号进行变频采样可以降低其载波频率。

It is found that selecting appropriate value of duty cycles of Gauss light pulse signal, frequency chirp and the roll-off factor of raised cosine pulse signal produced by the equalizer of an optical receiver can improve the sensitivity of the optical receiver.

发现适当选取高斯光脉冲信号的占空比、啁啾分量、光接收机均衡滤波器输出的升余弦频谱波形滚降因子的值可以提高光接收机灵敏度；

Set the target value and signal error, the optimal state-feedback coefficient matrix and feed-forward coefficient matrix FR and FD of target signal and disturb signal are educed via error equation and quadric value function which includes error term and input term.

设定目标值和误差信号，通过误差系统方程和含有误差项和输入项的二次型评价函数导出系统最优状态反馈系数矩阵、目标值FR和干扰信号FD的前馈系数矩阵。

The design methodology such as the choice of test signal, sampling frequency and initiative value of the gain matrix is given.

讨论辨识输入信号的设计和采样频率的选择；

Voice conversion is a new branch of the speech signal processing, the technology can be used in text-to-speech system, film dubbing, secure communication and so on, it has very important research value.

语音转换是语音信号处理领域一个较新的分支，该技术可用于文语转换系统、电影配音和保密通信等多个领域，具有很重要的研究价值。

Condition monitoring method based on Fuzzy ART neural network is presented for solving the difficulty of setting threshold value of parameter while signal-space method is used in condition monitoring of spacecrafts.

为解决信号空间法在航天器状态监测中存在的参数阈值难以设定问题，提出一种基于Fuzzy ART神经网络的状态监测方法。

After calculating the analog to digital convert error, each stage processes the next stage input signal immediately, and this increases the value of output signal flow speed.

每一级电路计算完它的模拟转换误差后，马上就可以对下一个输入数据进行计算，提高了随机数产生速度。

For the exactly soluble case of unidirectional ring laser with a homogeneous broadened line, the frequency shift relation, the critical and threshold value of inversion, the phase transition behavior and the features of the two-photon lasers with injected signal are analysed.

就可以精确求解的均匀展宽、单向环形激光器的情形，分析了频率位移关系，反转度的临界值和阈值，相变行为，以及带有外加讯号的双光子激光的特性。