查询词典 receiver

Double channel bandpass sampling method for wide band IF signal is presented to settle the problem of blind zone,which exchanges one more sampling channel for simplification of clock circuit and band pass filter.As a practical reconnaissance receiver, real-time processing performance must be considered.Digital channelizing method lays the base of parallel processing by multi DSP chips and discarding of the redundant data resulting from double channel bandpass sampling.

针对带通采样存在着频率覆盖盲区的问题，提出了宽带中频信号双通道带通采样的方法，通过增加一个采样通道既解决了传统处理盲区方法中设计复杂采样时钟电路、高矩形系数滤波器的困难，还缓解了后续DSP处理压力。

The simulation results of receiver operating characteristic curve explain that the algorithm has very good detection performance.

由仿真结果给出的接收机工作特性曲线阐明了算法具有很好的检测性能。

We use receiver operating characteristic curve to evaluate the diagnostic value of sB7-H4 and CEA.

同时检测上述标本中CEA的含量，将两者的诊断效率进行比较。

A receiver operating characteristic curve was used to assess the performance of the Logistic regression model.

用ROC曲线法评价Logistic模型的预报能力。

Finally, receiver operating characteristic curves of the four index of blood lipid were used to predict the presence of carotid plaque.

最后对血脂四项指标绘制ROC曲线评价其对颈动脉斑块的预测价值。

The project will develop a bandpass sigma-delta analog-to-digital converter for digital audio broadcasting system in three years. In the first year, we had finished the system simulation for IF receiver using conventional high speed ADC and bandpass sigma-delta ADC, respectively. We also had done the analysis and design of high-order bandpass sigma-delta modulator structure. In this year, we have developed a coefficient synthesis method for high order bandpass sigma-delta modulator using high order filter transfer functions (inverse Chebyshev bandreject filter function).

本计划将在三年内发展一个能应用在数位音讯广播系统的带通sigma-delta类比/数位转换器(analog-to-digital converter，ADC)，在第一年度中我们分别以传统高速类比/数位转换器及带通SD类比/数位转换器的接收系统为例，并结合编码正交多工器(Coded Orthogonal Frequency Division Multiplex，COFDM)的技术，建立一套DAB系统模拟的方法，同时并研究有关高阶带通SD类比/数位调变器的架构及电路，并已成功开发出一个由高阶滤波器合成的高阶带通调变器。

Was established in January 1994, is the production, development of frequency / switch power transformers, matching transformer, IC card sensor coils, communications equipment receiver coil, Choke / depositors can, to linear inductance and Air Core coil, EMC filter frequency energy-saving system and the professional manufacturers.

金竹电子有限公司成立于一九九四年一月，是生产、开发工频/开关电源变压器、匹配变压器、IC卡传感器线圈、通讯设备接收线圈、扼流/存能、行线性电感、空芯线圈，EMC滤波器及变频节电系统的专业厂家。

Combined with the test of one kind of GPS receiver, this paper puts forward a method of evaluation on interior noise level using Chorology and Statistics and a new testing method by revolving the horizontal table-board between multi-sessions on the field of Mini-baseline.

论文结合某品牌GPS接收机检测实例，提出了GPS接收机内噪声水平分布统计的评价方法，以及在超短基线场内GPS接收机内噪声水平的全新检测方法－多时段旋转检测台法。

A receiver extracts the bit of watermark data from the selected bit position of the average value of the chrominance portion.

接收机从色度部分的平均值的选择比特位置中提取水印数据的比特。

C/A codeˉacquisition ; FFT ; circular correlation ; realˉtime sof tware receiver

伪码捕获； FFT ；循环相关；实时软件接收机

But GST= 0.156, Nm=1. 588. As a result, the foundation of Youyongchi Avicennia marina population was the result of the migration of hypocotyles and human factors.

这项工作可以为海岸防护林中新引进种类的判定以及为研究种群建立者效应方法的确定提供科学依据。

The two-dimensional CDRC-ADI-FDTD update equations for collision unmagnetized plasma are induced. The unconditional stability of the CDRC-ADI-FDTD formulation for collision unmagnetized plasma is obtained by the examples.

推导了碰撞非磁化等离子体中的二维CDRC-ADI-FDTD迭代公式，并用算例验证了碰撞非磁化等离子体CDRC-ADI-FDTD算法也是无条件稳定的。