查询词典 signal noise ratio

Simple upper bounds of signal to noise ratio improvement factor are derived for the suppression of a narrowband first-order autoregressive process and analytical conclusions corroborated by numerical examples.

研究了判决反馈滤波器在直扩系统中估计和抑制窄带干扰的性能，给出了判决反馈滤波器抑制一阶自回归干扰时信噪比提高因子的闭合表达式的上界。

As for the practical seismic data,higher signal to noise ratio is a precondition of azimuthal AVO analyzing.

就实际地震数据来说，较高信噪比（＞5）是进行方位AVO分析的前提。

In the experimentation, the circular measurement configuration combined with the filtered back projection algorithm,very high signal-to-noise ratio tomography images can be obtained.

实验中，通过旋转超声探测器进行数据采集，并利用滤波反投影算法重建图像，可得到高信噪比的光声层析图像。

The general principle of RR STAP is addressed in this paper with the result that the output signal to clutter plus noise ratio will be probably near as or even better than that of full rank STAP. Thereby, the final detection performance of practical airborne phased array radar won't necessarily be degraded when rank reduction is operated properly. There exists two basic types of adaptive processor, one is Direct Form Processor and the other is Generalized Sidelobe Canceler .

降维可以在空域、时域或时空联合域进行，无论在哪个域内进行，都可以等效成对全空时数据矢量施以一个降维变换矩阵Q〓，如果Q〓与数据的特征结构无关，那么这类降维处理器的结构预先也是固定的，如果Q〓与数据的特征结构有关，即STAP在特征子空间内进行，那么所选择的子空间不同，STAP性能也不一样。

Chasseur D'Images indicates that there's an improved signal-to-noise ratio and dynamic range.

Chasseur D'Images称将会有改进的信噪比和动态范围。

Based on the similarity of common reflection point trace gathers in one coherent zone, CRS stack can focus more energy on the vicinity of the reflector, and therefore can obtain a high signal-to-noise ratio zero offset section by stacking events with the same phase.

共反射面叠加利用了邻近多个共反射点道集的相似性，提高了资料的覆盖次数，从而压制了随机噪声，增强反射波同相轴的连续性，大幅提高了地震资料的信噪比。

Numerical results show that this new scheme can greatly improve the output Signal to Noise Ratio compared with conventional RAKE receiver or Pre-RAKE combiner.

数值分析表明，采用上述方案的系统的输出信噪比较之通常的RAKE系统或者Pre-RAKE系统有较大的提高。

For example, in a cellular telephone network with frequency reuse, spectrum spreading and forward error correction reduce the spectral efficiency in/Hz but substantially lower the required signal-to-noise ratio in comparison to non-spread spectrum techniques.

例如，在一个频率复用的移动电话网络中，扩频和前向纠错对于非扩频技术来说，虽然减少了频谱效率，但是充分地降低了所要求的信噪比。

Simulations show that when the signal to noise ratio is greater than 0dB, the inverse model algorithm converges rapidly and stably with computational error being within a minimal bound.

仿真结果表明在信噪比大于0dB时，该自适应逆模型算法收敛迅速、稳定，计算误差保持在较小的范围之内。

Objective To find the relationship between correlation and signal to noise ratio of transient evoked otoacoustic emissions.

目的探讨在瞬态诱发耳声发射信号的检测过程中瞬态诱发耳声发射信号总的相关率和信噪比，以及各分频段相关率和信噪比的变化规律和相互关系。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。