噪

The available image is found by template matching in original bill image. After the elimination of noise by filter, the image substraction is used to detecting the existence of template in available image.

在原始票据图象上利用模板匹配先得到相应的有效图象，再运用差影技术对滤波去噪后的有效图象进行模板存在与否的检测。

In consideration of the in-pulse phase modulation and Doppler frequency rate-of-change's subtleness, a fast and accurate algorithm is proposed. The influence to parameter estimation with phase modulation is dismissed by time domain correlation between neighboring pulses. Signal noise ratio is increased by frequency domain accumulation.

该文针对信号脉内相位调制和多普勒频率变化率信息非常微弱的特点，提出了一种快速高精度估计算法，通过相邻脉冲间的时域相关消除了相位调制对参数估计的影响，频域积累增强了信噪比，利用脉冲间的相参特性进行频谱相关消除了相位模糊，并放大了多普勒频率变化率信息。

It"s characteristic work to use the correlated synchronal detecting scheme to enhance the system signal to nosie ratio, and it"s referential for the laser guidance weapons development.

为提高系统的信噪比而引入了相关检测是本论文的一大特色，对于半主动激光制导武器的研制有一定的参考价值。

No regrets, no magic numbersWake the tranced one from his slumbers.Wouldst thou wisely and with pleasure,Pass the days of life's short measure

她生前写过一千七百多首无标题短诗（标题为出版时后人所加，一般为原诗的首句），当时不为人知，死后名声大噪。

They are effective in reducing noises of solid transaudient,are applicable for different types of large and small suspending equipment and pipelines.

该产品具有阻尼比大、自振频率低、安装方便、对固体传声有明显的降噪效果，对于各种大小设备及管道的吊装普遍适用。

Results show that it provides more reliable estimation of traveltime on shot-receiver domain.

物理模拟试验表明，在炮检域平面上分析直达波的信噪比与能量分布，可以使处理人员对旅行时的误差有更直观的认识。

The limited Value of specific A-weighted sound level in the present standard JB/ TQh341-84 promulgated by the Ministry, which is applied to determine the unaccuracy of noise characteristics for axial-flow ventilators has been discussed.

论证了现行JB/TQh341-84部颁标准中用比A声级限值来判定轴流通风机噪声特性的不准确性，并提出了A声级限值标准及对高压大流量轴流通风机应采取的降噪措施。

Many new detection techniques are proposed, that include: To overcome the faults of cross-terms and short unambiguity range for the common Wigner-Ville Distribution , short-time Fourier transform and Gabor transform are applied to SAR moving target detection. To improve the detection performance of WVD in noise environment, a new technique based on the Cross-WVD is proposed. The application of fractional Fourier transform to chirp signal detection is analyzed and extended to SAR moving target detection. To eliminate the restriction of chirp-Fourier transform, a new modified definition is proposed and applied to SAR moving target detection. To detect multiple moving targets whose scattering intensities are different heavily, the CLEAN technique is combined with the above techniques and the ideal detection performance is achieved. At last, the whole dissertation is concluded.

具体的研究成果如下：针对常用的Wigner-Ville分布在多目标情况下存在交叉项，并且多普勒不模糊范围小的缺点，提出将短时Fourier变换和Gabor变换应用于SAR运动目标检测，分析了其优势所在；为进一步提高Wigner-Ville分布低信噪比条件下的信号检测能力，提出基于互Wigner-Ville分布的运动目标检测方法；分析了分数阶Fourier变换在线性调频信号检测中的应用，提出基于分数阶Fourier变换的运动目标检测算法；对离散Chirp-Fourier变换的定义进行了修正，提出修正的离散Chirp-Fourier变换，克服了限制其应用的约束条件，并用于SAR运动目标检测当中；强度相差较大的多运动目标检测历来是机载SAR技术的一个重点和难点，我们将CLEAN思想融入上述多种算法当中，良好地解决了该问题。

Then based on SURE unbias estimation, LMS algorithm and the new threshold function, this paper proposes a speech enhancement method called adaptive wavelet coefficients subtraction.

在小波阈值去噪的方法中，为满足时变信号的实时处理要求，本文首先提出一种新的阈值函数，新阈值函数克服了传统阈值函数的缺点，具有无穷阶连续导数。

However it seems that for the same signal-to-noise ratioof phase reference,the sensitivity to phase offset for 8-PSK is more serious than for uncoded QPSK.

然而，就相同的载噪比C/N，8-PSK方式对于相干载波相位偏移的灵敏度要比QPSK方式大得多，将会引入较多的误码。

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％。