鉴别、分析各种干扰因素,有利于消除和抑制环境噪音在雷达中产生测试伪信号。
It is useful for controlling the environmental interfering signal or removing it from the radar image by distinguishing and analyzing all kinds of interference factors.
信号一旦产生了伪信号数据,就无法还原:现在还没有办法消除“伪信号”。
Once you have aliased data, you can never go back: There is no way to remove the "aliases."
伪信号将频率有效的引入到你采集的现实信号中不存在数据中(和消除一些数据),从而严重扭曲了原始信号。
Aliasing has the effect of introducing frequencies into your data that didn't exist in the real-world signal (and removing some that did), thereby severely distorting your signal.
检波器的输出信号中存在着非测量的成分,我们称之为检波器的伪信号响应,它严重地影响地震勘探数据的质量。
There is the non-detected component in the output of geophone. This component is called the pseudo signal response, which seriously affects the quality of seismic data.
伪信号,如果采样率慢于某一周期的8.5倍(见图10.24),那么显而易见我们的重建信号与原始信号直观上一点都不像。
Aliasing, while not intuitive, is easy to observe (see Figure 10.24). If we sample 8.5 times slower (the circles), our reconstructed signal looks nothing like the original.
利用伪随机多频信号作为场源的多频相对相位谱观测法拥有相对相位观测法的优点,同时为异常源的区分提供丰富的信息。
PRMF relative phase spectrum IP method with PRMF signal as excitation has the same advantage of relative phase IP method, and offer rich information for the discrimination of anomaly source.
在数字基带处理时,从正常载频信道中提取出导频信号,用于伪导频的发射。
When processing digital base-band, the signal of pilot-frequency was taken out from normal carrier channel and it would be used for transmitting pseudo pilot-frequency.
为了对微波辐射计进行星载条件下的仿真研究,本文采用伪随机信号来仿真微波辐射计的噪声源。
To simulation study microwave radiometer. under spaceborne condition this paper simulates the noise sources of microwave radiometer by artificial random signal.
多频激电相对相位谱法充分发挥了伪随机多频信号作为电法勘探场源的优点,可在找水,找矿等勘探中发挥重要作用。
PRMF relative phase spectrum IP show the advantage of PRMF signal as source of electrical exploration, can play important in groundwater exploration, mineral exploration, and so on.
实验和模拟结果均表明:采用简化方案时转换输出的伪归零信号所包含的时钟分量的强度小于采用抽运探测方案的情况。
Both of them shows that the clock component contained in the converted PRZ signal obtained using the simplified scheme is weaker than that using the pump-probe scheme.
实现区域快速无源导航定位,需要至少四个伪卫星站提供的导航信号。
To bring about local navigation and position, it at least requires navigation signals from four pseudo satellite stations.
给出了数字音频信号中信息隐藏的伪随机序列生成算法。
The information is hidden in digital audio signals by an arithmetic of Preudo-random sequences generation.
本文介绍了在航空发动机闭环控制系统的反馈通路上施加伪随机试验信号时,对发动机模型参数进行辨识的方法。
An aeroengine model can be identified from actual closed-loop engine test data if pseudorandom binary sequence as test signal ACTS on feedback circuit of the closed-loop control system.
本文介绍用伪随机信号进行系统辨识的计算机辅助测试系统。
The system with computer aided test for system identification by pseudo-random signal is introduces in this paper.
事实上,由于伪码的周期性而导致的循环平稳是扩频信号的一个重要特征。
In fact, as the result of the period of a PN code, cyclostationarity is a key property of DSSS signal.
给出了基于序列顺序置乱的信号白化算法:混沌序列乱序白化算法和伪随机序列乱序白化算法。
Present a whitening signal algorithm based on disordering sequence. One bases on chaos sequence, another bases on pseudo random sequence.
该方式给每个用户分配不同的伪随机跳时码,根据跳时码参考信号和数据信号进行相同量的跳时。
It assigns different PN time-hopping codes to different users. The signals for reference and symbol in a frame have the same time-hopping value.
在仿真试验中,比较了给定功率阶跃扰动信号、白噪声信号及伪随机信号分别作为输入信号进行辨识的结果。
In simulation experiment, results of identifying models using step disturbance of given power signal, white noise signal, and pseudorandom signal as input signals have been compared.
简述了采用伪随机及阶跃激励信号进行系统辨识的原理。
This paper briefly gives principles of using PRBS and step signal to identify system and describes methods of constructing IBM-PC/XT-computers identification system.
研究了伪码调相引信信号的解调技术。
伪随机噪声在数字信号处理中具有重要的实用价值,白噪声是产生具有指定概率分布的伪随机噪声的基础。
The pseudo-random data are widely applied in digital signal processing. White noise data is the basis of generating random data, which has the expected probability distribution.
伪码调相-载波调频复合信号的识别特征包括伪码特征和频率调制特征。
The features of pseudo code PM-carrier FM combined signal include the pseudo code and the modulation frequency.
针对伪卫星信号应用中遇到的远近效应问题,研究了时分信号结构方案来解决。
As the solution to the Near-Far problem in Pseudolite application, the TDMA signal structure project has been researched.
研究了伪随机信号的特征及伪随机信号产生的方法,得出了用伪随机信号代替白噪声信号辨识钻柱系统脉冲响应的结论。
The results show that the input white noise can be substitute by pseudo-random signals in identifying the impulse response of a drill-string system.
本文介绍用以辨识船舶运动方程系数的伪随机二进制信号发生器的基本原理、使用方法和精度。
This paper introduces the basic principles, application and precision of PRBS generator which is used for the identification of coefficients of ship motion equation.
在GPS广域差分系统中,参考站需要进行高精度导航信号监测接收,并获得良好的伪距观测数据。
The reference station needs to monitor and receive the high-accuracy navigation signal in the wide area DGPS, and to get more accuracy data of pseudo-range observation.
介绍了一种分段极性相关的方法,并将其应用于DS -BPS K信号的多个参数估计和伪码捕获。
A new method called subsection polar correlation is introduced and then is used in estimation of several DS-BPSK signal parameters and in PN acquisition.
本文先后介绍伪卫星应用中的远近效应问题和常用的解决方案,重点分析了采用时分多路复用技术来对伪卫星信号进行重新设计。
In the paper, firstly introduce the near-far effect of the pseudolites and traditional solutions, then mainly analysis the TDMA technology and redesign the signal of the pseudolites.
目前已经能够研制出测量用户至卫星伪距信号的“北斗”用户接收机,此款接收机可以工作在无源定位的情况下。
The BD receiver can measure the pseudo distance between the satellite and the user, so that it can work in the passive positioning system.
目前已经能够研制出测量用户至卫星伪距信号的“北斗”用户接收机,此款接收机可以工作在无源定位的情况下。
The BD receiver can measure the pseudo distance between the satellite and the user, so that it can work in the passive positioning system.
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