Methods of measurement for radio transmitters . part 4 : amplitude frequency characteristics and non - linearity distortion in transmitters for radiotelephony and sound broadcasting 无线电发射机的测量方法.第4部分:无线电话和播音发射机的幅频特性及非线性失真
8 the frequency responses of a function are the plots of the amplitude and phase of this function versus frequency that are called the amplitude response and the phase response 频率特性是这个函数的大小和相位随频率的变化曲线（情况） ，分幅频特性和相频特性。
The method is to judge whether a system is stable by analyzing the amplification of loop circuit based on amplitude frequency response and phase frequency or not 这种方法是将电路的幅频特性和相频特性曲线结合起来对环路增益进行分析，以此作为判断系统是否稳定的依据。
The digital tester for frequency response characteristic , which is also called frequency - sweeping instrument , plays a very important role in modern electronic measurement 扫频仪也称频率特性测试仪,用于测试网络的幅频特性和相频特性,在现代电子测量中占有重要的位置。
Ultimately , we obtained normalized abnormal curves for the frequency responses , through which we could reveal hew the sealed pressure case impacts the responses of the magnetic field sensor 在响应输出端，测取幅频特性和相频特性，获得归一化的对比资料和频响异常曲线，从而对密封前后磁场传感器的性能变化有较清楚的认识。
At first , the algorithms for " nose - to - nose " calibration technology acquiring the parameters are introduced , including the algorithms for acquiring the impulse response , the step response , the rise time , the amplitude response and the phase response 首先,介绍了“ nose - to - nose ”校准技术获取示波器冲激响应、阶跃响应、过渡时间、幅频特性和相频特性的各种算法。
The sensitivity correct and the test of magnitude character for sensor are done by the comparison method , the horizontal sensitivity , linear error and environment character are tested , and the error of indication is calculated in chapter four 第四章采用比较法对传感器进行了灵敏度校准、幅频特性测定，并进行了横向灵敏度、线性误差和环境性能试验，计算出了示值误差。
When we use fft to analyze harmonics and interharmonics , the interharmonics component will result in a phenomenon of frequency spectrum leakage and make the amplitude - frequency image distorted , so we must judge the component of harmonics and interharmonics 在运用fft分析谐波和间谐波时，间谐波的存在会造成“频谱泄漏”的现象，使得幅频特性图像失真，需要对其中谐波和间谐波的含量做出判断。
For the single point suspending system , the double loops - pid control algorithm is given , the asymptotic stable range of the coupling system and vibration caused by the hopf bifurcation near the critical state and the nonlinearity of the system are researched first 针对一维单点问题,给出了双环pid控制算法,研究了单点悬浮控制系统的渐近稳定性、 hopf分岔点附近的振动特性和非线性振动的幅频特性。
For the amplitude - frequency response at the self - oscillation frequency is one , a method to calculate the dynamic accuracy and the index of the servo system is provided , by comparing them , the scheme to design the verifying unit is presented 利用伺服系统在自振荡频率点的幅频特性为1这一特点，将输入信号频率、幅值、系统的自振荡状态和系统的参数联系起来，构建了伺服系统动态精度的计算公式和指标估算经验公式，并根据两者的关系提出动态精度校正方案。
