参数

In addition, the transformation formulas among many classes of baseline position parameter solution is deduced, and the relation formulas among precisions of many classes of baseline position parameter solution is also deduced in this section.

另外，还推导出了各类基线位置参数解之间的换算关系公式，以及各类基线位置参数解精度之间的关系公式。

This paper utilizes FFT after undersampling to analyze the relationship between the estimation of sinusoidal parameters and corresponding actual values on the basis of bandpass sampling theorem. In addition, the errors of parameter estimation using phase difference are deduced strictly.

摘要该文从带通采样定理出发，分析了欠采样后利用FFT估得的正弦信号参数与真实值之间的关系，并对欠采样下基于相位差分法的参数估计的误差进行了严格的推导。

In this paper, the group additive method of repeated unit is used to calculate the solubility parameter of alkyd resin from its oil length. Equations of three dimension solubility parameter of alkyd resin calculated from its oil length are derived.

本文采用重复单元基团加和法计算了醇酸树脂不同油度的溶度参数，进而整理出一组随油度改变的醇酸树脂的二维溶度参数的方程式。

This Recommendation does not address the mapping of various cause values in reason parameters contained in primitives and the handling of parameters contained in primitives.

本建议未涉及原语中的原因参数不同原因值的映射以及原语中参数的处理。

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。

In the first part,we use adjoint operator method and matrixrepresentation method to compute normal forms of higher order for nonlinear dynamicalsystems with Z2—symmetry and Z2—asymmetry.

在第二部分里，利用多尺度法、规范形理论、普适开折理论、Melnikov方法和Petrov方法分别研究了参数激励作用下非线性振子、参数激励与强迫激励联合作用下非线性振子的局部分岔、余维2退化分岔、余维3退化分岔和全局分岔。

The paper put forward segmentation method of wood surface disfigurement based on fractal parameter and the adjunction of spring and mass of matrix directing at disadvantages of segmentation method of traditional surface disfigurement and calculation methods of fractal parameter.

论文主要针对传统表面缺陷分割方法的不足，提出了基于分形参数的木材表面缺陷分割方法，并针对分形参数计算方法的缺点做了相应改进，提出了增容矩阵的计算方法。

The method is easy to set kernel parameters and has adjustability to a certain extent.

该方法设定核参数相对容易，而且核参数具有一定的自动调节能力。

Aerodynamical parameters in longitudinal model of a certain type of helicopter are identified in the paper.

直升机气动参数辨识是气动参数辨识研究的热点和难点之一。

In the third part, we discuss a simple class of Sturm-Liouville problems with Dirichlet boundary condition in the first boundary condition and an affine function in the second one.

第三部分我们讨论了一类参数边界条件的Sturm-Liouville问题，其第一边界条件为Dirichlet条件，第二个边界条件为特征值参数的线性函数。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐