In order to decrease the mirror frequency interference, cross interference and inter-modulation interference, double IF (Intermediate frequency) is adopted in the receiver.
为了降低镜频干扰、交调和互调干扰，接收机采用了双中频方案。
The paper describes the mechanism of origination of cross-modulation interference in CATV and a method for fixing it. The formulae on mathematics of cross-modulation interference are derived.
从数学角度出发，推导出了CATV系统交调干扰电平的数学表达式，并阐述了CATV系统交调干扰的产生机理以及排除方法．。
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。
The optic fiber sensors of phase modulation type developed by the interference theory in traditional optics are high sensitive.
根据传统光学干涉原理研制出的相位调制型光纤传感器，其突出优点是灵敏度高。
While a noise modulation module used for canceling range ambiguity and mutual interference was proposed, modeled and analyzed.
同时加入了一种噪声调制以解决距离模糊和同类系统相互干扰，并加以建模分析。
The automatic identification of the modulation types has been applied to many fields such as signal identification, interference identification, radio interception, signal monitoring, etc.
通信信号调制类型的自动识别广泛应用于信号确认、干扰识别、无线电侦听和信号监测等领域。
In addition to alternating phase difference between two aims of interferometer, the intensity of light of the interference fringes will vary in the same frequency, which is called as phase modulation.
当两相干光附加一按固定频率变化的相位差时，其干涉条纹的光强将随之交变，即为相位调制干涉。
As it is to OFDM, WMCM has lower time complexity in baseband modulation, good PAPR distribution, and takes on more robust to pulse interference.
与OFDM相比较，WMCM的基带调制时间复杂度降低，峰均功率比更优，对抗脉冲干扰的能力更强。
The passive interference in receiving station of amplitude modulation (AM) broadcasting from UHVAC transmission lines is mainly caused by towers.
特高压输电线路对调幅广播台站的无源干扰主要是由垂直杆塔引起的。
This article mainly offers a method to achieve high-accuracy and anti-interference remote measuring circuit in which the principle of pulse-direction modulation is used.
本文主要提出了利用调节脉冲宽度的原理来实现高精度、抗干扰遥测电路的一种方法。
Broadband noise frequency modulation signal with high precision is commonly used in modern electronic interference system.
宽带高精度的噪声调频信号在现代电子干扰系统中应用广泛。
The key technology in it, such as interference discrimination, self-adaptive modulation strategy and channel quality estimation are discussed in this paper particularly.
对其中的关键技术：干扰辨识、自适应调制策略和信道质量估计进行了详细的讨论。
The modulation types of data link for UAV are simple, such as BPSK, 2FSK , direct spread spectrum. The transmitted rate and anti-interference performance of them are limited.
目前，无人机数据链系统采用的调制模式都比较简单，如2FSK、BPSK、直接扩频技术等，传输速率与抗干扰能力有限。
The master control chip uses AT89C51, the communication mode adopts DTMF signal with strong anti-interference and high reliability, and simplex frequency modulation.
主控芯片采用AT89C51单片机，通信方式采用抗干扰能力强、可靠性高的DTMF信号和单工调频的无线通信方式。
A heterodyne interference is caused by a frequency modulation of a laser diode (LD) with a ramp injection current, and a linear phase detection is realized.
传感器利用注入结电流直接调频的半导体激光(LD)产生外差干涉，从而实现了干涉相位的线性检测。
The paper analyzes the interference rejection of Quadrature amplitude modulation signals in the presence of carrier phase jitter, sinusoidal interference and white Gaussian noise.
文章分析了存在载波相位起伏、正弦干扰、高斯白噪声时正交调幅数字系统的抗扰性。
In this paper, we start from the energy point of view, use AM-FM modulation model and formant frequency, to remove the vocalic interference which vast majority of energy in the useful speech.
本文从能量角度入手，利用调频-调幅模型和共振峰特征，滤除混叠在有用语音中的含绝大部分能量的元音干扰。
Classical direct torque control method adopts the technique of 6 polygon flux linkage voltage modulation. It will generate torque pulsation and harmonic interference.
传统直接转矩控制技术采用的六边形磁链电压矢量调制方法，这会引起较大的转矩脉动和谐波干扰。
At last. it argues the best interference-free code and mode of modulation in interface circuit.
最后，讨论了接口电路中最佳抗干扰编码及调制方式。
The interference and its processing method of long sequence phase-modulation signal of multitargets in pulse compression are studied emphatically.
重点研究了长序列调相信号多目标对脉冲压缩的相互影响及其处理方法。
The interference and its processing method of long sequence phase-modulation signal of multitargets in pulse compression are studied emphatically.
重点研究了长序列调相信号多目标对脉冲压缩的相互影响及其处理方法。
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