同时估计

The former is an iterative method, and quaternion was utilized to simplify the matrix orthogonalization procedure.

改进的单点估计算法是一种迭代算法，它计算简单，收敛速度快，同时由于采用四元数表示姿态矩阵，简化了矩阵的正交化过程。

The multiscale model is not only capturing the several important ways in which a data analysis or signal processing problem can have multiscale characteristic, but also leading to an efficient and highly parallelizable algorithm for optimal estimation of stochastic processes.

此模型的的建立不仅是获取具有多尺度特征的数据分析或信号处理问题的一种重要方式，同时，利用它还可以为最优估计随机过程的状态变量诱导出高度有效、并行迭代算法。

By applying the accumulative method which is a new technique for fitting a curve to parameter estimation of GM (0, N), it avoids complicated matrix operation, reduces operation time and keeps high accuracy and many model characters. Thus it is of great benefit to practical application.

通过将累积法这种新的曲线拟合技术引入到GM（0，N）模型的参数估计之中，避免了复杂的矩阵运算，减小了运算量，同时精度高且不改变模型的许多性质，对于实际应用有一定的意义。

Yet such was the Fright I had taken at the Moors, and the dreadful Apprehensions I had of falling into their Hands, that I would not stop, or go on Shoar, or come to an Anchor; the Wind continuing fair,'till I had sail'd in that manner five Days: And then the Wind shifting to the southward, I concluded also that if any of our Vessels were in Chase of me, they also would now give over; so I ventur'd to make to the Coast, and came to an Anchor in the Mouth of a little River, I knew not what, or where; neither what Latitude, what Country, what Nations, or what River: I neither saw, or desir'd to see any People, the principal thing I wanted was fresh Water: We came into this Creek in the Evening, resolving to swim on shoar as soon as it was dark, and discover the Country; but as soon as it was quite dark, we heard such dreadful Noises of the Barking, Roaring, and Howling of Wild Creatures, of we knew not what Kinds, that the poor Boy was ready to die with Fear, and beg'd of me not to go on shoar till Day; well Xury said I, then I won't, but it may be we may see Men by Day, who will be as bad to us as those Lyons; then me give them the shoot Gun says Xury laughing, make them run wey; such English Xury spoke by conversing among us Slaves; however I was glad to see the Boy so cheerful, and I gave him a Dram (out of our Patroon's Case of Bottles) to chear him up: After all, Xury's Advice was good, and I took it, we dropt our little Anchor and lay still all Night; I say still, for we slept none!

但是，我已被摩尔人吓破了胆，生怕再落到他们的手里；同时风势又顺，于是也不靠岸，也不下锚，一口气竟走了五天。这时风势渐渐转为南风，我估计即使他们派船来追我。这时也该罢休了。于是我就大胆驶向海岸，在一条小河的河口下了锚。我不知道这儿是什么地方，在什么纬度，什么国家，什么民族，什么河流。四周看不到一个人，我也不希望看到任何人。我现在所需要的只是淡水。我们在傍晚驶进了小河口，决定一等天黑就游到岸上去，摸一下岸上的情况。但一到天黑，我们就听到各种野兽狂吠咆哮，怒吼呼啸，不知道那是些什么野兽，真是可怕极了！这可把那可怜的孩子吓得魂飞魄散，哀求我等天亮后再上岸。我说，"好吧，佐立，我不去就是了。不过，说不定白天会碰见人。他们对我们也许像狮子一样凶呢！"佐立笑着说，"那我们就开枪把他们打跑！"佐立在我们奴隶中能用英语交谈，虽然发音不太地道。见到佐立这样高兴，我心里也很快乐。于是我从主人的酒箱里拿出酒瓶，倒了一点酒给他喝，让他壮壮胆子。不管怎么说，佐立的提议是有道理的，我接受了他的意见。于是，我们就下了锚，静静地在船上躺了一整夜。我是说，只是"静静地躺着"，我们事实上整夜都没合过眼。

Among so many synthesis methods for FGN, there are the spectrum-based approaches, spectral simulation and Paxson method, which features and the relation between are explored in this paper. Morever the spectrum-based estimation for hurst exponent, periodogram, is researched.

在众多的合成分形高斯噪声的方法中，研究了基于功率谱的FGN的生成算法，谱模拟方法和Paxson方法的特点以及联系，同时对基于功率谱的Hurst指数的估计方法，周期图法进行了讨论。

According to introduction, they make use of Europe south the astronomical observatory establish in 3.6 meters caliber astronomical telescope of the Chile a set of the mountain lodge of 2400 meters saddle type of an elevation, confirm Be located on south the fixed star"Gliese 581" inside the along while ball scales horoscope see toward the speed because it surroundings can't see fixed star of gravitation function but"perturbation" for appear, subsequently reckon this a red and short star neighborhood of"new the Earth" round a mother fixed star of revolution around sun period and quality.

根据行星的介绍，他们利用欧洲南方使用建立天文台3.6米口径的智利一集的山2400米的海拔马鞍型，提出确认将于南部的恒星"格里斯581"所在的内沿，同时对球尺度占星速度见的天文望远镜因为它周围看不到固定的引力作用，但"摄动出现，随后估计这是一个红色的和短期的"新地球"轮明星邻居母亲围绕太阳固定期限和质量革命之星"的明星。

In this chapter, three kinds of target recognition methods are performed, which are:①Target recognition method based on the description of polarization parameter plane. The echo polarization states of target are projected onto the polarization state plane described by the ellipticity ε and the tilt angle τ of the polarization ellipse, the change of parameter following ferquency becomes the chart. According to the changing trait of the chart, the multidimensional polarization feature space of target has been contructed. Furthermore, a series of polarization feature parameters used in designing the structure of target recognition device are extracted, and they are insensible to the posture of target.②Target recognition method based on the description of Poincare polarization sphere. The echo polarization states of target expressed by Stokes vector are projected onto the Poincare polarization sphere. The conception of polarization ferquency stability, which is used in describing the dynamic distribution characteristics of the target echo polarization states on Poincare polarization sphere, has been defined. A group of polarization feature parameters used in designing the structure of target recognition device are extracted, and they are insensible to the posture of target.③Target recognition method based on the description of frequency sensitivity. In accordance with the conception of the polarization state distance defined on Poincare polarization sphere, the frequency sensibility of the physical structure property of target has been investigated, the frequency distribution feature curves in PSD domain are obtained, and targets'features are extracted by means of the curve-fitting method with Least Square Criterion.

这章具体研究了基于三种极化散射特性描述的相应的目标识别方法：①基于极化参数平面描述的目标识别方法，将目标回波极化状态投影到以极化椭圆参数，即椭圆率角ε和倾角τ表征的极化状态平面上，参数随观测频率的变化就形成了图，根据图的变化特点构造了目标的多维极化特征空间，并提取了不敏感目标姿态变化的极化特征参数组来设计目标的识别器结构；②基于Poincare极化球面描述的目标识别方法，采用Stokes矢量表征目标回波的极化状态，并将其投影到描述极化状态的Poincare极化球面上，定义了极化频率稳定度的概念用以刻画目标回波极化状态在Poincare极化球面上的动态分布信息，提取了准方位不变性的目标极化特征，最后设计了目标的识别器结构；③基于频率敏感性描述的目标识别方法，通过在Poincare极化球面上所定义的极化状态距离的概念，研究的是复杂目标物理结构特性对探测信号频率的敏感程度问题，获得了在极化状态距离下的频率分布特性曲线，采用最小二乘估计曲线拟合方法，它既用于极化特征的降维，同时又直接将拟合参数作为目标的分类特征。

By the priori estimates and degree theory on the positive cone, we obtain some conditions on the existence and non-existence of positive solution, at the same time, we also discussed the properties of the positive solution.

利用先验估计和正锥上的度理论，给出了正解存在的条件，同时，也讨论正解的一些性质。

On the condition that the primary optical axis of the seeker was fixed to the missile top, the expressions of imaging compensation were educed by analyzing imaging laws of the moving target relative to the rotating seeker. An estimation algorithm based on the coupling image was used to realize real-time tracking for the angle velocity. After discussing some relative problems such as glint and fabric noises, a filter based on wavelet decomposition and weighted smoothness was utilized.

通过分析目标相对于旋转导引头的成像规律，推导出图像反旋补偿的公式，研究了基于图像的角速度估计算法，实现了对自旋角速度的实时跟踪；同时对成像过程中产生的闪烁噪声、抖动噪声等进行了分析，并在角速度跟踪时，采用基于小波滤波与加权平滑的方法进行去噪处理。

Segmentation and extraction of the target feature points from the unregistered, noisy data set of human body scanning and measuring are discussed. We have fitted the noise scanned data line with KS principal curve, which is based on the K-means theory. The crossing zero of curvature was used to segment and estimate the position of target feature points. And optimization scheme named variable fuzzy partition is also presented to improve the searching for local feature area.

使用基于K-means思想的KS主曲线算法，对国家人体尺寸测量工作中产生的带噪声扫描线数据集合进行非线性拟合，并依据曲率分布特征提出对目标特征点空间位置进行模糊分区估计的方法；同时提出了变量化模糊分区的优化策略，大幅度地提高了局部特征区域搜索的效率。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失