| 1. | It has a signal - to - noise ratio ( snr ) of at least 75 db
它有一个信号杂讯比（信噪比）的至少有75分贝。 |
| 2. | Many approaches have been adopted to enhance the signal - to - noise ratio ( snr ) of the recorded signal
Anfis可直接应用于建模、决策、信号处理和控制领域。 |
| 3. | It is difficult to estimate doppler rate accurately when the signal - to - noise ratio ( snr ) of sar echo is low
摘要当sar回波数据的信噪比较低时，准确估计多普勒调频率变得十分困难。 |
| 4. | Nanc has two adaptive filters : a main filter ( mf ) and a subfilter ( sf ) . the signal - to - noise ratio ( snr ) of the input signals is estimated using the sf
该自适应噪声抵消系统由主自适应滤波器( mf )与分自适应滤波器( sf )组成。 |
| 5. | It is shown that the performance of dbmusic is superior to that of the original beamspace music ( bmusic ) in the low signal - to - noise ratio ( snr ) case
研究表明，在低信噪比的条件下， dbmusic法的高分辨性能明显高于原波束域music ( bmusic )法。 |
| 6. | Speech enhancement as the front - end processing module is used to improve the signal - to - noise ratio ( snr ) of the input signal for recognition in the latter stages
为了让语音识别系统在安静的环境和有噪声的环境中都获得令人满意的工作性能，研究了一个将语音增强器和语音识别器级连起来的系统。 |
| 7. | A kind of switch algorithm from cma to decision directed ( dd ) algorithm is studied , and the selecting method of the decision circle , according to signal - to - noise ratio ( snr ) , is presented
从信噪比的角度，研究了从常数模算法向判决导引算法的切换算法，提出了一种切换判决圆半径的选取方法。 |
| 8. | Noise and interference are inevitable in radar channel . they enter the received system through side or main beams , and reduce the system ’ s receiving signal - to - noise ratio ( snr )
在雷达信道中,不可避免地存在着噪声和干扰,它们通过天线方向图的边波束或主波束进入接收系统,从而降低系统的接收信噪比。 |
| 9. | It is found that the signal - to - noise ratio ( snr ) of the system is affected not only by the coupling coefficient between two noise terms , but also by the noise correlation time t
研究结果表明，系统的信噪比不仅受到两种噪声之间的祸合系数兄的影响，而且受到噪声相关时间公的影响，即噪声有色性的影响。 |
| 10. | Direct sequence spread spectrum ( dsss ) system usually operates in the condition of low signal - to - noise ratio ( snr ) . the receiver extracts information from the signal through correlation operation by the spread code
直接序列扩频通信系统通常工作于低信噪环境中，接收机以扩频码对信号相关解扩提取信息。 |
