| 1. | This technique is used in modems to make business machine signals compatible with communication facilities
这项技术用在调制解调器里，使商用计算机的信号与通信设备的信号相兼容。 |
| 2. | However , as to the expressions of the real or image parts of the phasor , there are many problems in the relevant documents published in recent years
但从近几年发表的相关傅氏算法的文献来看，很多文章中关于信号相量的实部和虚部表达式有错误。 |
| 3. | But they avoid the cancellation with the cost of degradation in interference - reduction performance . the paper studies a robust adaptive beamformer to avoid the cancellation
但是这些方法避免信号相消现象是以损失波束形成器抑制干扰的性能为代价的。 |
| 4. | To detect the micro particles of metal is based on the phenomenon that when a metal micro particle passes through an electromagnetic field with constant speed the receiving carrier phase is changed
根据电磁场中恒速通过金属微粒会引起接收载波信号相角变化这一现象来检测金属微粒。 |
| 5. | After detailed analysis , the correct expressions are formulated and what the false expressions will bring about to the microcomputer protection is discussed
这里通过详细的数学推导，给出了在不同数学模型下信号相量实部和虚部的具体表达式，并讨论了各种错误在微机保护应用中带来的问题。 |
| 6. | In sce method , a sub - band frequency energy technique has been improved and a new technique which is based on phase plane technique has been proposed . four characteristic quantities have been extracted and used in data - analysis
统计特征量方法中，改进了子带能谱特征量提取方法；独立提出了散射信号相平面特征量提取方法。 |
| 7. | 1 in the research of design of radar waveform , one kind of hybrid radar waveform obtained by combining the chirp waveform with the non - periodic pseudorandom sequences is discussed . through the theoretical analysis and computer simulation , several main characteristics of this kinds of hybrid waveforms are discussed , such as the ambiguity function , ambiguity graph , the spectrum , the weighting methods , the response of the processing filter and the low probability of interception . those are showing the effectiveness of the new hybrid waveforms on the performance of high resolution and low probability of interception
作者在以下几个方面的研究工作中取得了进展及创新： 1 、在雷达波形设计中，介绍了一类新的线性调频信号与非周期随机编码信号相结合的组合波形的组合形式，通过理论分析和大量的计算机模拟研究了这类组合波形的模糊函数(图) 、频谱特性、多普勒频移特性、加权输出特性、低截获等方面的特点，证明了新型的组合波形在高分辨、低截获等方面的有效性。 |
| 8. | The control method was introduced and the hardware of the controller was designed . the controller uses the 89c52 and 89c2051 as the main control unit and produces the on and off and angle signal of each phase . combined with protecting signal and current chopping signal , it can control the igbt on and off
介绍了srd的控制方式和本系统所采用的控制策略，对控制器的硬件电路进行了设计，控制器以89c52和89c2051双cpu为主控单元，采用模糊调节，发出相通断信号和角度信号，并和电流、电压等保护信号以及斩波信号相结合，实现对主功率元件的通断控制。 |
| 9. | Delay line oscillator is composed of broadband amprifer adjustable attenuator and saw sensor device . after output signal of delay line oscillator is smoothed , it mixes with 109mhz local oscillation signal . its differential frequency signal is smoothed by low - pass filter trimmed by shaping circuit and processed by digital processing circuit
延迟线振荡器由宽带放大器、可调衰减器和声表面波质量传感器件构成。延迟线振荡器输出信号经滤波后与109mhz的本机晶体振荡器输出信号相混频，通过低通滤波取其差频，并经整形后由数字信号处理电路处理。 |
| 10. | Satellite overlap communication technique ( i . e . soct ) is a new technique in satellite communications . its signal is overlapped , not only in time domain but also in frequency domain , on the signals of another system supported by the same transponder . moreover , its signal may be non - orthogonal to the others in cdma meaning , but it can be separated from the latter and demodulated by means of some special methods
卫星重叠通信技术是一种特殊的卫星通信新技术，它是在一条卫星链路正在传输的其它信号之上叠加一路微弱信号进行通信，这一微弱信号在时域、频域都与原信号相重叠，与原信号也不一定存在码分正交关系，其收端采用一些特殊技术进行信号分离、解调与译码。 |
