frequency selection
英 [ˈfriːkwənsi sɪˈlekʃn]
美 [ˈfriːkwənsi sɪˈlekʃn]
选频
双语例句
- Frequency selection anti-jamming technique
频率选择抗干扰技术 - Calling a registered frequency when the Automatic Frequency Selection function is not used. This example calls a frequency channel 01.
不使用自动频率选择功能时，调出已登记的频率。该例调出01频道的频率。 - Relationship between Frequency Selection and Pipe Characteristics for Guided Waves NDT
管道导波无损检测频率选择与管材特征关系 - A frequency selection method of NIR spectroscopy was proposed in the present paper for discrimination of maize seed varieties.
提出了一种近红外光谱的频率选择方法用于玉米品种鉴别。 - This paper is involved in the analysis of oscillation starting condition, output voltage amplitude adjustment, and frequency selection network composition of sinusoidal coave oscillation circuit.
分析了用运算放大器组成正弦波振荡电路的起振条件和输出电压幅值的调节及选频网络的构成。 - HF adaptive frequency selection controller is a system to improve the performance of HF communication.
短波自适应选频控制器是改善短波通信质量的系统。 - Objective: To study the effects of the frequency selection pulse sequence and inversion recovery pulse sequence in the suppression of fatty tissue.
目的：研究频率选择脉冲序列与反转恢复脉冲序列对脂肪组织抑制的效果。 - Research on transmission characteristics and frequency selection of seismic short wave communication in Liaoning
辽宁区域地震短波通信传播特性和频率选择探讨 - Through cases of animal tracking and medicine management, this paper illustrates the issues we should consider in frequency selection.
本文通过动物跟踪和药品管理两个应用案例，阐述了在选择频率时必须考虑的问题。 - The shortage of the FFT multi-tone envelop method in the adaptive frequency selection system is discussed, the numeric expression of the improved FFT complex envelop method is given, and a comparison between fwo properties is made.
从自适应选频系统中多音FFT包络法的不足和缺点，导出了改进的多音FFT复包络法算法公式，并比较了两者的性能。 - The generator of adaptive FH pattern is designed. By using it and the result of the LQA, adaptive frequency selection is accomplished.
设计了自适应跳频图案发生器，利用信道质量评估结果，完成了自适应频率选择。 - A new model system with multiple source signals is discussed in the paper. which can realize AOA of the multiple source signals and frequency selection. The paper also analyses the feasibility of the engineering of the system and proposes the application prospect.
基于现代谱估计理论与技术，论述了一种新体制多目标信号分选系统，可对多目标信号实现AOA与频率的分选，并分析了系统的工程实现可行性，指出了应用前景。 - One of the crucial techniques in burst communication is adaptive frequency selection.
在这种通信任式中，一个关键技术是自适应选频技术。 - As respects seismic short wave communication network in Liaoning, propagation characteristics and frequency selection of electromagnetic wave in radio communication have never been made a research in theory.
辽宁区域地震短波通信网对电磁波在无线通信中的传播特性及频率选择等问题，没有进行深入的理论研究和探讨。 - In this paper, we have researched the FTP, first we propose an improved FTP based on two-frequency grating projecting, which are involved in the problems of the phase unwrapping and the frequency selection to satisfy the two carrier frequencies no frequency aliasing.
本文研究了FTP的相关问题：（1）提出双频光栅FTP，并深入讨论了为消除频谱混叠，两个载频之间所必须满足的频率选择关系以及相位展开问题； - The author also makes some suggestions for frequency selection of digital carrier and parameters selection of spectrum shaping filter.
对数字载波的频率及频谱成形滤波器的特性参数的选择提出了建议。 - Research and Implementation of Real Time Frequency Selection of Differential Frequency Hopping Communication System Based on DSP
基于DSP的差分跳频通信系统实时选频技术的研究与实现 - The propagation character of HF channel is one of important factors which influence the frequency selection.
本文首先对短波信道的传输特性作了分析，该特性是影响工作频率选择的主要因素。 - To make sure that the input data for the soft sensing algorithm is reliable, frequency selection is introduced, auto range circuit and digital filtering are also used.
同时，为了保证软测量算法输入数据的可靠性，运用了选频方法、加入了量程自动切换设计和数据转换处理，提高了测量精度。 - Result-contrast research of fat-suppression of pulse sequence used with frequency selection and inversion recovery
频率选择脉冲序列与反转恢复脉冲序列脂肪抑制效果对比研究 - Application of Golay Code in Adaptive Frequency Selection and Its DSP Implementation
Golay码在自适应选频系统中的应用及其DSP实现 - Frequency offset's effect on HF adaptive frequency selection system and its estimation
频偏对自适应选频系统的影响及估值方法 - Frequency selective surfaces, is a two-dimensional periodic array structure which can be used to the electromagnetic wave frequency selection, so it is often used as a spatial filter.
频率选择表面（FSS），是一种二维周期性阵列结构，它可以对电磁波进行频率选择，所以经常被用作空间滤波器，可分为带通、带通、低通和高通四类。 - The Fabry-Perot resonator used in the optical domain has frequency selection function on the propagation of electromagnetic waves, adopt this structure to the antenna system can significantly increase the gain of the antenna.
光学中的Fabry-Perot谐振器对电磁波的传播具有选频作用，满足谐振条件的电磁波在穿透谐振腔后能够同相叠加，将该结构应用于天线系统中能够明显提高天线的增益。 - It proposes an improved Dynamic Frequency Selection scheme, in which traffic allocation unit and scheduling information delivery are selected by subchannel domain, modulation and coding domain, subcarrier domain.
提出了一种优化的动态频率选择方案，该方案是对资源分配单元和调度信息传递在子信道域、调制编码域和子载波域的三维选择。 - A re-configurable filter based on microwave multilayer circuit is designed in this paper in order to satisfy the demand of microwave circuits and systems for multi-band frequency selection. The filter merges different methods of electric tunable filter but the conventional one has been improved and innovated.
为满足微波电路系统对多波段选频的需求，实现仪器小型化的发展趋势，本文设计了基于微波多层电路的可重构滤波器，融合了电调滤波器的不同实现方法，并对其进行改进创新。 - And the CDMA can offer more system capacity, restrain frequency selection decline in channel and offer Multi-access conveniently.
而码分多址技术具有系统容量大，能抵抗信道的频率选择性衰落以及提供方便的多用户接入等优势。 - According to the maximization utility theory, first, we analyze the diversity characteristic affecting the system optimization, including frequency selection diversity, location diversity, the time diversity and queue diversity of member nodes.
本文根据最大化效益理论，首先，对影响系统目标优化的分集特性理论进行了分析，其中包括：频率选择型分集、地点分集、时间分集以及成员节点队列分集。 - Improper frequency selection will lead to the radar leakage alarm and detection range reduced.
实际工作中如果选频不当会导致雷达检测不到目标或者探测距离降低。 - As an important frequency selection device, microwave filters are widely used in communication systems.
微波滤波器作为重要的选频器件，在各种微波系统中获得了广泛应用。