- 更多网络例句与四元的相关的网络例句 [注：此内容来源于网络，仅供参考]
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A novel direction of arrival and polarization estimation of electromagnetic vector sensors mounted on the airframe is proposed based on biquaternion. The signal processing model for EM-sensor mounted on the airframe is made by biquaternion and then the eigenvalue decomposition of spectral matrix is obtained by means of the EVD of its quaternion adjoint matrix. The memory requirement for data is reduced, and more accurate estimation result is gotten by deducing the stronger orthogonality constraint between the sin- gal and noise subspaces on the field of biquaternion. The performance of the new algorithm is confirmed through numerical examples.
针对机载电磁矢量传感器阵列DOA和极化参数估计问题，提出了一种基于复四元数估计方法，该算法利用四元数建立机载电磁矢量传感器阵列信号处理模型，然后利用四元数联合矩阵的特征分解得到阵列数据相关矩阵的特征分解，一方面使得计算过程中数据的贮存量大大减少，另一方面通过推导得到信号子空间和噪声子空间在四元数域上的正交性从而使DOA和极化参数佑计的精度更高，仿真证实了本算法的有效性。
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The quaternion calculation for spacecraft attitude determination is investigated in this paper,including the transformation between quaternion and the direction cosine matrix,the quaternion differential equation,the selection of time steps for integrating the quaternion equation,and the compensation methods for the noncommutativity error in high dynamic motion.
介绍了四元数计算中的相关问题，包括四元数与方向余弦阵之间的转换、四元数运动方程、求解四元数运动方程时积分步长的选取和高动态应用中非互易误差的补偿，此外还介绍了对偶四元数的发展。
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Our charge for sports facilities is four dol lars per hour.
运动器械以每小时四元的标准收费。
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The reason why quaternion is used in flight simulation of fighter aircraft and the geometric meaning of quaternion are described,according to axis system used in flight simulation of fighter aircraft in China,three problems are introduced as follows:(1) quaternion kinematic equations,(2) relationship of quaternion and coordinate transformation matrix,(3) Euler angles in terms of quaternion.
阐述了在战斗机的飞行仿真中采用四元数的原因和四元数的几何意义，并按照中国战斗机飞行仿真中采用的坐标系，介绍了三个问题：四元数运动学方程；四元数与坐标变换矩阵的关系；用四元数表示的欧拉角。
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The numerical calculations of quaternion matrices The quaternionic quantum mechanics is a new coming disciplines of physics, because of noncommutation of quaternions, some numerical calculation methods of quaternion and quaterinon matrices are complicated and tedious.
四元数矩阵的数值计算问题四元数量子力学是近十几年来才发展起来的一门新兴的物理学科，由于四元数乘法的不可交换性，使得四元数量子力学中的四元数数学理论基础，特别是有关四元数问题的数值计算方法很不完备。
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By comparing the matrix theory over number field,we mainly discussed the quaternion matrix norm theory,the quaternionic determinant,the complex number expression of the quaternion matrix and the quarternion linear matrix equation.
通过对比一般域上矩阵理论，本文主要从四元数矩阵范数理论、四元数矩阵行列式、四元数矩阵的复表示以及四元数线性方程组和线性矩阵方程四个方面阐述了四元数矩阵理论。
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The apparatus further includes a quad-symbol mapper which quad-maps the systematic symbol streams to one symbol stream, a channel interleaver which independently interleaves the quad-mapped systematic symbol stream and the parity symbol streams, quad-demaps the quad-mapped systematic symbol stream, interlaces symbols in parity symbol streams, and serial-concatenates the quad-demapped systematic symbol stream to the interlaced parity symbol streams.
该设备还包括：四码元映射器，其将系统码元流四映射到一个码元流；信道交织器，其独立地交织四映射的系统码元流和奇偶码元流，对四映射的系统码元流进行四逆映射，交错奇偶码元流中的码元，并且将四逆映射的系统码元流串行连接为交错的奇偶码元流。
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From pregnancy to now I have drawn nine bottles of blood, a blood test more dazzling projects, to capacity yesterday seized a doctor of color plus a 421 yuan 5 tests alone, there are three blood is found, a the urine is a post-mortem blood sugar, which add up to five tests a single block四五百Also, I do not have to pay, according to those on the 420 color, color Doppler ultrasound showed good BB, before the pumping amniotic fluid have been excluded from the BB some congenital problem.
从怀孕到现在我已经抽了九瓶血，验血的项目多得眼花缭乱，昨天去产检医生开了一张421元的彩超另加五张化验单，有三张是检血的，一张是验尿的一张是验血糖的，这五张化验单加起来又四五百块，我没有交钱，就照了那四百二的彩超，彩超结果显示BB很好，之前抽过羊水排除了BB先天性方面的一些问题。
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In the last two chapters, this thesis first develops two quaternion-based color image filtering methods that are based on the quaternion rotation theory and quaternion unit transform, respectively, then analyzes the fulfillment algorithm of the QSVD (Quaternion Singular Value Decomposition) and its applications to color image processing, and expands the real number-valued PCA to quaternion-valued PCA.
在论文的最后二章，通过利用四元数旋转和色调抵消机制以及四元数单位变换来表达二个彩色像素的色调差异，提出了二个基于四元数理论的彩色图像滤波的新方法；并分析了四元数奇异值分解QSVD (Quaternion Singular Value Decomposition)的实现算法及其在彩色图像处理中的应用；同时将实数域上的主成份分析扩展到四元数域，形成了四元数版本的主成份分析QPCA (Quaternion Principal Component Analysis)。
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The contents of the first quaternion of Amiatinus coincide so remarkably with descriptions of the celebrated Codex Grandior of Cassiodorus that it has been supposed that the leaves were transferred from it bodily; the conjecture has been rendered more credible by the fact that this codex was actually seen in England by Bede, perhaps before Amiatinus was carried to Rome.
内容的第一次四元的amiatinus不谋而合，所以显描述著名法典grandior的cassiodorus称，它一直以为叶均被转移到它的身体；猜想已变得更为可信的事实，即这一法典，是我们实际上所看到的在英格兰，由贝代，或许之前amiatinus进行了罗马。
- 更多网络解释与四元的相关的网络解释 [注：此内容来源于网络，仅供参考]
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biquaternion：复四元数,八元数
biquadratic | 双二次的,四次的,四次方程,四次幂 | biquaternion | 复四元数,八元数 | biquinary | 二元五进制的,二元五进位的
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quadripartition：四分法
quadrinom ial 四项式 | quadripartition 四分法 | quadruple 四元组,四重的,四倍的
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quartern：四等分
quartermadter corps line 军用油管线 | quartern 四等分 | quarternary 四元的
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Quaternary：四级的;四元的;季
quassin 苦木素 | quaternary 四级的;四元的;季 | quinacrine 喹吖因
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quaternion：四元数
1843年10月16日,在数学史上是一个重要的日子:这一天爱尔兰的数学家哈密尔顿(William Rowan Hamilton)发现了"四元数"(Quaternion). 有一位英国人汤姆斯.修(Thomas Hill)曾经这么说:"牛顿的发现对于英国及人类的贡献超过所有英国的国王;
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quaternion：四个一组, 四人一组, [数] 四元数
barreled 桶装的,(枪,炮)有管的 | quaternion 四个一组, 四人一组, [数] 四元数 | cornstone [地]玉米灰岩
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semiquaternion：半四元数
semiprimitive ring 半本原环 | semiquaternion 半四元数 | semireductive 半可简约的
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tetrahydroxy alcohol：(含有四个羟基的醇)四元醇
tetrahydroxy adipic acid 四羟基己二酸 | tetrahydroxy alcohol (含有四个羟基的醇)四元醇 | tetrahydroxy benzene 四羟基苯
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four-dimensional：[数]四维的, 四次元的
ammonium nitrate powder 硝酸铵炸药 | four-dimensional [数]四维的, 四次元的 | neosternum 新胸骨
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four-dimensional：四维的; 四次元的
four-cornered 四边形的; 有四人参加的 | four-dimensional 四维的; 四次元的 | four-footed 四足的