波

This kind of oceanic energy has allured the most attentions in the field of oceanic energy utilization.

针对海洋波浪能发电技术的基本原理、能量转换系统等作了全面综述，介绍了国内外海洋波能发电技术的进展和主要波能装置，而其中一些计划的成功实施，有力地推动了波能转换的技术进步及其在世界范围内的竞争力。

By the way, different radar clutters are used in the hardware.The real time clutter is good for radar clutter simulation.

另外，本系统对各种分布杂波进行了硬件实现，实时产生的杂波序列更好的模拟了真实雷达回波。

The SAR imaging algorithm of moving spot targets in the background of ground clutter s;2. To perform the simulation of ground clutter received by space-based pulse doppler radar,a method based on the analysis of cohered video is illustrated in this paper.

针对星载脉冲多普勒雷达的地杂波仿真问题，介绍了基于视频信号的模拟方法，并且给出了具体的计算公式、原理和步骤；从理论上分析了星载PD雷达的地杂波谱；最后通过仿真分析了主瓣杂波与天线视角的关系，以及主瓣杂波与地球转动之间的关系。

Seismic imaging in Northeast Sichuan is greatly influenced by the widely distributional carbonate,strata juxtaposition with swelling and concaving,superimposition and connection between different wave fields,complex interlayer contact conditions,static corrections, high and steep structure ,as well as rapid change of seismic velocity in the area.

针对川东北地区碳酸盐岩高度发育，地层隆凹相间，各种波场交叉叠置，层间接触关系复杂，以及静校正问题、高陡构造及速度变化快等影响因素突出的特点，通过分析地表因素、有效波频率、静校正量及膏岩层效应对地震资料品质和成像的影响，研究和开发出三维折射波静校正以及构造建模层速度约束偏移成像等一系列处理技术，消除了众多因素对地震成像的影响，并在宣汉达县地区得到良好的应用效果，为普光特大气田的大规模开发奠定了基础。

By conjoining the wavelet coefficient absolute value with the local area energy, a new image fusion algorithm is proposed based on the techniques of wavelet decomposition.

在小波分解的基础上，将小波系数绝对值与局部能量二个激活度量相结合，提出了一种新的小波图像融合算法。

multi-channel correlators are widely used in traditional pseudo-random code cw radar,which makes the ranging system more complicated.this paper proposes a method of digitalizing the return signal directly and then convoluting the signals on dsp,which can replace multi-channel correlation in analog circuit.but the computation of convolution is too huge for the dsp to fulfill.to solve this problem,this paper analyzes five fast algorithms including fft,and then chooses one according to the characters of prc-cw radars.the digital method and fast algorithm have been verified by simulated signal and real signal.

一种提高空间伪码扩谱测距精度的实用。。。摘要：传统的伪码调相连续波雷达采用多路模拟相关电路实现对回波信号的相关接收，通过多路试探搜索各距离单元的目标，电路复杂。提出的数字化方案，对回波信号直接数字化，利用高速dsp实现数字卷积，可替代多路模拟相关电路。但是直接卷积的运算量过大，dsp无法承受。本文对此进行了研究，分析了包括fft在内的五种快速算法，结合prc-cw雷达的具体情况，确定了一种适于dsp实现的快速卷积算法。仿真和实测数据证实了数字化方案及快速算法的正确性。

multi-channel correlators are widely used in traditional pseudo-random code cw radar,which makes the ranging system more complicated.this paper proposes a method of digitalizing the return signal directly and then convoluting the signals on dsp,which can replace multi-channel correlation in analog circuit.but the computation of convolution is too huge for the dsp to fulfill.to solve this problem,this paper analyzes five fast algorithms including fft,and then chooses one according to the characters of prc-cw radars.the digital method and fast algorithm have been verified by simulated signal and real signal.

摘 要：传统的伪码调相连续波雷达采用多路模拟相关电路实现对回波信号的相关接收，通过多路试探搜索各距离单元的目标，电路复杂。提出的数字化方案，对回波信号直接数字化，利用高速dsp实现数字卷积，可替代多路模拟相关电路。但是直接卷积的运算量过大，dsp无法承受。本文对此进行了研究，分析了包括fft在内的五种快速算法，结合prc-cw雷达的具体情况，确定了一种适于dsp实现的快速卷积算法。仿真和实测数据证实了数字化方案及快速算法的正确性。

Wavelet transform is Mallat algorithm in substance but a key point of Mallat algorithm is that wavelet's filter is convolved with function, so the calculation of coefficients of impulse response of filter of wavelet is very importment for Mallat algorithm.

在信号和图象处理中小波变换的实质是Mallat算法，而Mallat算法中其基点是小波所对应的滤波器和原函数作卷积，因此小波所对应的滤波器的冲激响应系数的计算对Mallat算法的实现具有现实的意义。

The wavelet function corresponding to a certain scale can be regarded as the transfer function of a band-pass filter according to the definition of CWT, thus, sampling the signal and the wavelet function respectively, the wavelet coefficients at this scale can be obtained by convolving the two time series.

根据CWT的定义，可将某一尺度下的小波函数看作一带通滤波器的传递函数，于是对信号和小波函数分别进行采样后，再利用快速傅里叶变换实现两个序列的线性卷积，便能求出相应尺度下的小波系数。

In the paper Wavelet Transform was performed on the Steel Board picture,and combining the Fractal Brownian Model,computing the Fractal Dimensions of the Wavelet Coefficient pictures of different frequencies resulted from Wavelet decompounding,and make it the feature to differentiate Side Wave defect and nick detect.

本文在对镀锌钢板图像进行小波变换的基础上，结合分形布朗模型，计算小波分解得到的不同频率下的小波系数图像分形维数，以此作为区分边浪与划痕缺陷的特征。

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％。