查询词典 signals

These Lorenz systems are built, which are relevant and can be switched each other via the choicer. Chaotic synchronization of these systems is realized using same nonlinear feedback control method. The transmitter can be switched discretionarily among several chaotic systems, bring on ceaseless changing of the chaotic carriers in transport channel. In the receiver, the chaotic carriers are retrieved from the received signals, then the information signals are recovered.

构建了有一定关联的两个Lorenz混沌系统，并通过选择器在系统间随机切换；用同一种控制方法既能实现不同Lorenz系统的混沌同步，又能实现相同Lorenz系统的混沌同步；发送系统可以在Lorenz混沌系统间随机转换，传输信道中混沌调制信号也随之不断变化；接收系统将混沌调制信号解调后，即可获取有用信号。

Then, based on the properties of DSTM signals, the new algorithm analyzes the demodulated signals and finishes fine-grained CFO estimation.

并且鉴于差分空时调制信号的特点，对解调后的信号进行分析，估计出残余的载波频率偏差。

An important feature of electronic detection system is to intercept more wireless signals and digitizes the analog signals for further processing.

电子侦察系统的一个重要特点是要截获大量的无线信号，将其数字化之后再进行处理，这就是软件无线电的思想。

Aimed at the difficulty to extract the fault information of a low speed shaft in a large gearbox, wavelet analysis was used to realize the local analysis of signals in a time and frequency domain simultaneously. The signals were dissembled to a sieres of compactly supported wavelet bases non-redundantly and without leaking.

针对大型齿轮箱低速轴故障信息难以提取的问题，采用小波分析方法对故障数据进行处理以实现信号在时/频域的局域性分析，将其无冗余、无泄漏地分解到一组具有紧支撑性的小波基上。

Thereinto, the analog receiver, the main body of the UATS preprocessor, conditions the output signals of the receiving transducer, which are amplified and filtered.And the driving circuit implements the low-pass filtering of the D/A converters output signals and offers the result to the power amplifier circuit as its input.In addition, the fathoming circuit acquires the depth information of the underwater electronic equipment cabin to ensure a relatively convenient way to adjust and recover the underwater parts of the system.

其中，模拟接收机完成对接收换能器输出信号的放大、滤波等调理工作，是水声靶标系统预处理机的主体部分；驱动电路实现对D/A转换器输出信号的低通滤波，用以产生功率放大电路的输入信号；测深电路用来获取水下电子舱的深度信息，便于系统水下部分的调整和回收。

The results show that both methods of wavelet and EMD are effective, while the method based on EMD, which filters signals and eliminates the noise selectively according to spectrum character of decomposition signal, is the optimal method that can sufficiently keep the non-stationary character inhered in signal and provide well auto-a-daptability, flexibility and affectivity and feasibility in filtering and denoising of rock blasting and impact fragmentation signals.

结果表明：采用小波与EMD 2种滤波、消噪的方法都能获得较好的效果，而基于EMD滤波、消噪法是依据信号分解结果的频谱特性进行选择性的滤波和消噪，更能充分保留信号本身所固有的非平稳特征，具有自适应强和灵活、有效的特点，是一种更好的爆破振动信号滤波、消噪法。

The signals were separately processed by means of three kinds of ICA algorithm of MSNR, GOSA and JADE. Some noise processing was interfused into a group of recorded vibration signals and the independent performance index was used to measure the reliability of the modal frequency separated by ICA.

使用MSNR，GOSA和JADE这3种ICA算法分别对信号进行处理；对记录的一组振动信号进行加噪处理；用独立性评价指数衡量了ICA分离模态频率的可靠性。

The experiment results show that the PRI tracker can track signals with constant, staggered PRI and PRI jittered signals with a APRI smaller than 10% of the average PRI.

实验结果表明PRI跟踪器能跟踪上固定PRI、PRI参差和PRI抖动或滑变范围小于平均PRI的10％的脉冲序列。

When signals breakdown, and when noise overtakes the signals, then chaos results and disorder prevails.

当信号故障，并超越时的噪声信号，然后混乱和无序的结果为准。

An instrument that converts voice and other sound signals into a form that can be transmitted to remote locations and that receives and reconverts waves into sound signals.

电话机：将话音和其它声音信号转变成能传送到远方地点的形式，而远处能接收电波并将电波还原成声音信号的仪器

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。