echo frequency
英 [ˈekəʊ ˈfriːkwənsi]
美 [ˈekoʊ ˈfriːkwənsi]
回声频率
双语例句
- The user has the ability to echo in the desired frequency to this file or allow some userspace daemon to set this value.
用户可以把所需的频率echo到这个文件中，一些用户空间守护进程也可以设置这个值。 - Radar echo frequency spectrum estimation based on α stable distribution covariation Application of Changing Chirp Rate Sign in Eliminating Range Blur of SAR
基于α稳定分布自共变的雷达回波频率谱估计变线性调频斜率符号在合成孔径雷达中的应用 - Unambiguous SAR Echo Reconstruction Based on Decomposed Frequency Spectrum in Multiple-Phase-Center SAR
基于谱分解的多相位中心SAR回波无模糊重建 - A way to measuring the vector miss distance using echo signal from Multiple Frequency CW-Tracking Radar is described in this paper.
本文详细介绍了利用多频连续波测量雷达回波信号进行脱靶量测量的方法。 - This paper discusses the application of joint estimation of DOA and Doppler velocity in passive bistatic radar, and analyzes emphatically the passive detection of target echo frequency in passive bistatic radar.
将DOA与多普勒速度的联合估计定位应用于双基地雷达，重点分析双基地雷达系统中对目标回波频率量的无源检测方法。 - In this paper echo signal of linear frequency modulation ranging radar is the middle frequency signal which is from 0~ 40 MHz. The accurate algorithm of the spectrum analysis is the premise that realizes high precision location.
线性调频测距雷达回波信号是频偏0～40MHz的中频信号，精确的谱分析算法是实现精确测距的前提。 - Describes a distance simulator of echo signal used in radio frequency simulation system.
描述了射频仿真系统中使用的目标回波距离处理器。 - The basic work principle of a certain kind of Doppler radar is introduced, the relation between the echo Doppler frequency and other parameters is given.
介绍了多卜勒导航雷达的基本工作原理，推导了回波信号多卜勒频移与系统其它参量间的关系。 - Base band radar transmits a narrow pulse sequence, and in the same way receives echo pulse, then converts high frequency echo pulse into low frequency image, from which target information is obtained, and used to detonating warhead.
基带雷达引信发射一个超窄脉冲序列，用采样的方法接收目标回波脉冲，把高频回波脉冲变换成低频图象，从低频图象中提取目标信息，并在精确的距离上引爆战斗部。 - A Research on Echo Simulation of Frequency Modulated Continuous Wave SAR
调频连续波SAR回波模拟研究 - Precise acquisition and storage of radar echo signal are prerequisite to accomplish radar target recognition and imaging well. Nowadays, with fast development of A/ D sampling rate and computer bus technique, it's already possible to sample real-time radar echo signals at intermediate frequency.
精确的雷达回波信号采集存储是完成目标识别和雷达成像的必要前提，随着A/D采样率和计算机总线技术的高速发展，已经可以在中频直接对雷达回波信号进行实时采集。 - Based on discussing the characteristic of the echo frequency spectrum, signal generation principle of the echo signal and the hardware constitute of the ATE system are introduced.
在讨论回波信号频谱特性的基础上，介绍了回波信号的产生原理及自动检测设备的硬件组成。 - In this paper, time series cepstrum is introduced, and echo identification and low frequency fuzz diagnosis in machine tool noise analysis are taken as illustrative examples.
本文介绍了时序倒频谱，给出了在机床噪声分析中识别回声和诊断低频杂音的应用实例。 - The narrow-beam HF radar sea echo cross section equation is improved in theory when ocean surface current is considered. The sea echo Doppler frequency spectrum is simulated and the numerical results analysis and discussion are given.
考虑有海水表面流的情况下，从理论上对窄波束高频（HF）雷达海面回波的截面方程作出改进，并模拟出此时的回波多普勒频率谱，同时对结果进行分析和讨论。 - Echo Simulator of Frequency Modulation Radio Fuze
调频无线电引信回波模拟器 - While the methods of SAR echo in time and frequency domain been presented, the precision and realization of them are analyzed.
给出了SAR目标模型以及原始回波信号的时域和频域模拟方法，并分析了其精度和可实现性。 - Calculation of Echo Doppler Frequency for Satellite-Borne SAR
星载合成孔径雷达回波多普勒频率的计算 - Along with the technical development in modern radar and further researches on ground echo frequency domain characteristics, all achievements are prerequisite for developing airborne pulse Doppler radar altimeter.
随着对大地回波频域等特征研究的进一步深入，为弹载脉冲多普勒雷达高度表的研究提供条件。 - Influence factors of ultrasonic piezoelectric transducer echo wave frequency and the way of controlling
影响超声波换能器回波频率的因素及控制方法 - The complex data samples are directly extrapolated to obtain the extrapolated echo data in the frequency domain.
对于频域，直接对散射场回波复数据进行外推，可获得外推散射场。 - Radio frequency simulation system ( RFSS) is mainly used to simulate echo signal of radio frequency target in laboratory.
射频仿真系统（RFSS）主要是用在实验室里模拟空中射频目标信号。 - The third chapter discusses the Ground Moving Target Indicator technique. First, founds the model of moving point target and discusses the effect of the movement to the echo Doppler center frequency and Doppler rate.
第二，建立了运动目标回波模型，并分析了目标运动对回波多普勒中心频率和调频率的影响，进而分析了目标运动特性对成像造成的影响。 - The foundation of distinguishing targets and clutters is the difference in speed. That it reflects in echo is their different Doppler frequency.
区分运动目标的和杂波干扰的基础是它们在速度上的差别，这一差别反映在回波中是它们所具有的不同多普勒频移。 - Wind profiling radar is a radar echo Doppler frequency shift measure high-altitude wind direction, wind speed distribution equipment.
风廓线雷达是一种利用雷达回波多普勒频移测量高空风向、风速分布的设备。 - Echo signal is high frequency and narrow pulse width signal, the data acquisition method is based on equivalent-time sampling technique, and high-frequency of echo signal is converted to low-frequency signal by the receiver circuit, and then sent to the A/ D converter for data acquisition.
回波信号是高频窄脉冲信号，接收电路主要利用等效时间采样技术对回波信号进行采集，让高频信号变为低频信号，在送至A/D转换器进行数据采集。 - The higher the pH value of gelatin solution is, the larger the peak values of ultrasonic echo signal frequency spectrum. The offset of frequency spectrum is small and the molecules in gelatin solution have a open coil conformation.
明胶溶液的pH值较大时，超声回波信号频谱主频幅值较大，频谱主频偏移量较小，明胶溶液内部分子呈开放线团构象。 - After getting the echo delay of target, this paper derives the expression of target echo in radio frequency and intermediate frequency, and then analyses the meaning of phases in the expression and the relationship to the motion of target and radars.
在得到目标回波延迟的表达式之后，推出了目标回波的表达形式及其在经过差频后的中频表达形式，然后分析了其中的各个相位项的物理含义及其与目标和平台运动的关系。 - Digital echo signal intermediate frequency processing platform also need further inspection for actual effect with simulated meteorological echo signal or real echo signal.
数字回波信号中频处理平台也需要进一步的利用模拟气象回波信号或真实回波信号进行实际效果检验。 - The larger the grains are, the more serious the scattering is. Echo frequency spectrum decreases and structure noise frequency spectrum increases as the grain grows up.
晶粒越大，散射越严重，回波频谱的频率随晶粒尺寸的增大而降低，结构噪声频谱的频率随晶粒尺寸的增大而增大。