Chinese translation for "窄带信号"
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- narrow band signal
Related Translations:
窄带钢: baling stripribbon ironribbon steelriffled ironstrip iron 窄带掩蔽: narrow band masking 窄带放大器: amplifier, narrowbandnarrow band amplifiernarrowband amplifier 窄带综合: narrow band synthesis 窄带调制: narrow band modulation 窄带激光器: narrow band lasernarrow line laser
- Example Sentences:
| 1. | The method of using a single wideband facility to transmit many relatively narrow - bandwidth signals by subdividing the frequency spectrum used in the wideband channel
使用单个宽带设备传送许多窄带信号的方法。它是通过细分宽带通道上的频谱来实现的。 | | 2. | Broadband array signal processing is a main direction of underwater acoustic signal processing , but the broadband signal processing is more complex than that of narrowband
宽带阵列信号处理是水声信号处理的一个主要研究方向，但是宽带水声信号的处理远比窄带信号复杂的多。 | | 3. | Its basic function is to pick up the narrowband signals from the broadband & high speed digital signals , and transform it to the baseband . then the low speed baseband signals are sent to the following dsps for processing
其基本功能是从输入的宽带高速的数字信号中提取所需的窄带信号,将其下变频为数字基带信号,并转换成较低的数据率,以供后续的dsp作进一步的处理。 | | 4. | Get the approximate and the accurate correlation equations of pressure and velocity for narrowband signal , and the approximate correlation equation for broadband signal . 4 . introduce the method of the genetic algorithms , and perform an improvement
在窄带信号下，得出了近似条件下和精确条件下的相关方程，而在宽带条件下，得出近似条件下的表达式，从理论上推导出了声压和质点振速之间的相关方程组。 | | 5. | The fundamental concepts and theories of array signal processing are discussed . the definition and presentation of the narrowband signal is introduced briefly , and the technology of orthogonal sample is illustrated . then the statistical model of array signal processing is presented
系统概要地论述了阵列信号处理的基本概念和理论，分析了阵列处理中窄带信号的定义和表示方法，阐明了正交采样等采样方法，给出了阵列信号处理的统计模型。 | | 6. | Secondly , ground on the duct noise control , the delayed - lms algorithm , which is actulized easily , is brought forward , then the simulation on pc is achieved . it is shown from the computer simulation that for the single frequency noise , there will be a good effect when choosing the suitable parameters ; but for the narrowband noise , the effect will become worse with increasement of the bandwidth . this result is helpful to analyze the parameters influencing anc
结果表明： ( 1 )随着滤波器长度的增大，系统收敛速度变快； ( 2 )随着值的增大，系统的收敛速度增大，但是当值超过某一范围时会引起系统的发散； ( 3 )次级通路的延迟数与初级噪声频率有关； ( 4 )对于窄带信号， dlms算法可以取得一定的降噪量，但是随着窄带信号带宽的增大，降噪效果明显变差。 | | 7. | Digital down - converter ( ddc ) is one of the key technologies used by sdr receiver . the ddc module is a data processing part , following the ad sampler . the main function of ddc is extracting narrow - band data from broad - band data which is digitalized by ad sampler , down - converting these data to base - band , and decreasing data rate as well
Ddc数字下变频器技术作为软件无线电中的核心技术,是紧跟在ad采样后的一个处理模块,他的主要功能是从输入的宽带高速数字信号中提取所需的窄带信号,将其下变频为数字零中频,并降低数据的速率。 | | 8. | Frequency response , quantization noise , reconstruction error and its sensitivity to mismatch among adcs are studied at length in prqmf banks adc system , and the theoretic results include : ( 1 ) the distortion / aliasing functions of hybrid filter banks adc system is similar with that of switch capacitor filter banks adc system ; ( 2 ) for wide or narrow band input signal , the effective resolution of the two adc systems is 0 . 51og2m bits higher than their adc ; ( 3 ) reconstruction error ' s sensitivity to mismatch among adcs of the two adc systems is reduced effectively than time interleaved adc system
2对prqmf滤波器组adc系统的频响、量化噪声特性、重建误差特性以及重建误差对adc间的失配敏感性进行了理论分析研究，所得到的理论结果为： ( 1 )混合滤波器组adc系统与开关电容滤波器组adc系统的失真/混迭函数一致； ( 2 )无论输入宽带还是窄带信号，这两种adc系统的有效分辨率均比其adc提高了0 . 5log _ 2m比特； ( 3 )这两种adc系统的重建误差对其adc间的失配敏感性均明显低于时间交织adc系统。 | | 9. | Based on fourth - order cumulant , a computationally efficient method for joint estimating both directions of arrival and ranges of near field sources with known carrier frequency is firstly presented . the proposed algorithm need not any spectral peak searching and the 2 - d parameters are automatically paired . lt is suitable for arbitrary additive gaussian noise environment . in the following section , a 3 - d esprit method for jointly estimating of frequencies , doa ' s and ranges of multiple near - field sources with unknown carrier frequencies is proposed . the parameters estimation are given by the eigenvalues of different matrices . furthermore , its performances are confirmed by several computer simulations
利用四阶累积量，第五章首先给出了一种载频已知的情况下基于近场源的距离和波达方向联合估计算法，通过构造的阵列输出信号四阶累量矩阵使空间信号到达方向和距离估计无需谱峰搜索，且参数自动配对，适合于任意高斯噪声环境。进一步在第三节提出了一种载频未知的情况下的多个近场窄带信号源doa 、距离和频率联合估计的3 - desprit算法。 | | 10. | Because of the good sensibility , ultrasonic narrow band signal analysis technique with 1mhz central frequency was chosen to differentiate the heat treatment samples above - mentioned . there are obvious differences among heat treatment products in principal frequency , spectral peak ' s quantity , amplitude and distribution . that is to say , the technique of ultrasonic narrow band power spectral can be applied to characterize the microstructures of multi - phased alloy steels
利用窄带信号频谱分析技术灵敏度高的突出优点，选取中心频率为1mhz的窄带超声信号，对上述不同热处理试样进行超声功率谱分析，发现不同热处理产物在功率谱主频率、谱峰特征(幅度、数量、分布)等方面，都存在不同程度的差异。 |
- Similar Words：
- "窄带系统，窄频带制" Chinese translation, "窄带隙材料" Chinese translation, "窄带信道" Chinese translation, "窄带信道, 窄带通道" Chinese translation, "窄带信道，窄带通道" Chinese translation, "窄带选择伏特表" Chinese translation, "窄带选择接收机" Chinese translation, "窄带选择性伏特计" Chinese translation, "窄带掩蔽" Chinese translation, "窄带遥测" Chinese translation
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