of the first magnitude
- of the first magnitude的基本解释
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a.
头等重要的
- 相似词
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The computational complexity has been reduced about 5 times over against the original one. Moreover, the interpolation and quantization processing of CW is more reasonable; 2. A secondary power normalization algorithm is proposed in this dissertation. This normalization algorithm ensures that the energy sum of SEW and REW is 1. So, the energy ratio of SEW and REW can be achieved only by using SEW energy. This ratio is applied in REW quantization and CW composition; 3. For more efficient quantization for Slowly Evolving Waveform magnitude, Rapidly Evolving Waveform magnitude and power parameters, firstly, by applying the Equivalent Rectangular Bandwidth theory, classifiable multi-codebooks method, analysis-by-synthesis approach and so on, a predictive AbS multi-codebooks SEW magnitude quantization scheme is proposed. In the scheme, pitch information is exploited to determine which codebook is searched; secondly, for REW magnitude quantization, this dissertation proposed a DCT-matrix multi-codebooks quantization scheme. The classification in muti-codebooks is based on pitch and quantized SEW power. The multi-codebooks structure may offer more the information in quantization and solve the problem of the bit requirement limits in quantization by consuming some extra storage space; Furthermore, for the switch quantization of CW gain, a new classified parameter is proposed.
本文的主要贡献体现为如下几方面:一、为了减少WI模型的计算复杂度,提出了基于快速傅立叶变换、三次B样条插值和周期延拓技术的特征波形(Characteristic Waveform,CW)表示和对齐的快速算法,与原方法相比,计算量下降到原方法的1/5,同时也使得CW在插值和量化时更合理;二、为了严格保证SEW与REW的能量和为1,提出了一种特征波形的二次功率归一化算法,仅需要SEW能量就可以算出二者的能量比,并可应用到后续的REW的分类量化和CW合成中;三、为了对慢渐变波形(Slowly Evolving Waveform,SEW)幅度、快渐变波形(Rapidly Evolving Waveform,REW)幅度和特征波形功率进行有效量化,本文首先采用临界频带理论、分析合成技术、感觉加权技术以及预测式矢量量化技术,提出了一种基于基音周期分类的SEW分析合成预测式多码书量化方法;其次,本文根据基音和量化后SEW的功率信息对REW幅度进行分类,提出了一种基于离散余弦变换的REW矩阵多码书量化方法。
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Disclosed is a leaky-wave dual polarized slot type antenna, including: first and second feeding circuit sections comprised of N-first strip lines and N-second strip lines with a loop every first period along the X-axis on the first dielectric layer and a second period along the Y-axis, in which the N-first strip lines and the N-second strip lines are parallel to each other being alternate, and each length of Ls1 and Ls2 for the first period satisfies the equation of , first and second multi-channel dividers formed at once and the other sides of the first dielectric layer, to connect the N-first strip lines and the N-second strip lines parallel with each other; and first and second central ports formed in the opposite direction of the cavity, each of the feeding circuit sections being connected to the first and second multi-channel dividers; and first and second slot sections being formed by patterning the second shielding layer, in which M-first and M-second slots are arrayed along the direction of the X-axis and each of the first and second slots forms N-row first and N-row second slot arrays, respectively, which cross the first and second strip lines for each, the first slot and the second slot being orthogonal to each other.
公开了一种漏泄波双偏振槽型天线,包括:第一和第二馈电回路部分,其具有沿着X轴在第一介电层每第一周期以及沿着Y轴的第二周期形成具有环路的N第一带状线和N第二带状线,其中N第一带状线和N第二带状线彼此平行并交替,并且对第一周期的各Ls1和Ls2的长度满足等式,第一和第二多通道分配器寻形成在第一介电层的一侧和另外一侧上,以连接彼此平行的N第一带状线和N第二带状线;以及形成在腔的相对方向中的第一和第二中心端口,每个馈电回路部分连接到第一和第二多通道分配器;以及第一和第二槽部分,所述第一和第二槽部分通过对第二屏蔽层形成模式而形成,其中M第一和M第二槽沿着X轴的方向安置,各第一和第二槽分别形成N行第一和N行第二槽阵列,其对每个横过第一和第二带状线,第一槽和第二槽彼此正交。
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Two improvements measurements pointed to the errors to calculating b values have been proposed:(1) to adopt the uniform absolute magnitude scale, seismic moment magnitude MW,(2) to discard the magnitude points for which the earthquakes absent and lose, and then to compute the b value using least square method to fit the data.
针对过去计算b值的误差,提出了两条改进措施:(1)采用统一的绝对震级标度-矩震级标度MW;(2)舍弃缺失地震次数的点,然后用最小二乘拟合求得b值,使b值计算较准确。
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It is an affair of the first magnitude for government of various levels:是各级政府的头等大事
magnitude n.重要性,重大;巨大, 广大;大... | It is an affair of the first magnitude for government of various levels ;是各级政府的头等大事 | to strictly carry out the policy of family planning. ;严格执行...
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magnitude It is an affair of the first magnitude for government of various levels:是各级政府的头等大事
when he bails out the fighter plane. ;歼... | magnitude It is an affair of the first magnitude for government of various levels ;是各级政府的头等大事 | to strictly carry out the policy of family plannin...