方位

A motion parameter estimation method by fitting the phase history of the moving target is proposed for airborne dualchannel SAR systems. The crosstrack velocity, alongtrack velocity, crosstrack acceleration and alongtrack acceleration can be estimated, respectively.

针对机载双通道合成孔径雷达(synthetic aperture radar， SAR)系统中运动目标参数估计，提出了一种利用目标相位历程拟合目标运动参数的方法，包括距离向速度、方位向速度、距离向加速度和方位向加速度估计。

Based on the kinematic characteristics analysis of 3 degrees of freedom mobile robot with two drivable and steerable wheels and automatic driving experiences of experts, four sub-fuzzy tracking controllers are designed which realizes independent control of position between orientation of mobile robots to satisfy the desire posture requirements with the simplified fuzzy logic inference and shortened computing time simultaneously.

在平面目标跟踪过程中，将移动机器人跟踪的目标期望位姿分解为4种位置和方位组合，在分析总结了具有2个可操舵驱动轮的3自由度移动机器人运动特性的基础上，根据自动驾驶控制的专家经验知识，针对4种位姿的要求设计了4个子模糊跟踪控制器，这样大大简化了模糊逻辑推理过程，并减少了计算时间，实现了位置和方位的独立跟踪控制，同时满足了跟踪目标的位姿要求。

We analytically study a simple network model that incorporates both orientation-selective input from the lateral geniculate nucleus and orientation-specific cortical interactions.

我们分析性的研讨简易的网络模型，得以从侧面膝状弯曲之细胞核将选择性方位的输入与明确方位之皮质互动加以连接。

In this paper, we introduced the method and set of cat perceptual learning and research the character of orientation discrimination and contrast detection of cat, and we also research the effect of visual perceptual learning on the response of the Dorsal Lateral Geniculate Nucleus neuron with the method of single-neuron in vivo recording techniques, by which to the ends of knowing the mechanism of neuron in the perceptual learning. Perceptual learning in orientation discrimination and contrast detection was first observed by psychophysics method in cat in the following two experiments.

本研究介绍猫的视觉学习实验装置和训练方法，观察了方位辨别和对比度检测两种知觉学习的特点，并结合在体细胞外单细胞记录技术研究了视知觉学习对外膝体神经元反应特性的影响，初步探讨猫视知觉学习的神经机制。1、运用心理物理学方法进行了两个知觉学习实验，分别观察了猫对正弦光栅方位辨别和对比度检测的知觉学习。

We investigated the receiver functions in a horizontally-layered medium with arbitrary oriented hexagonally symmetric anisotropy, and discussed the phenomenon of shear-wave splitting and energy deviation in an anisotropic medium. The anisotropic structure yields patterns of receiver function amplitudes and arrival times on both the radial and transverse components that are a systematic function of source-receiver back azimuth. We also investigated the influence of varying anisotropy parameters, e.g.

采用具有任意方向对称轴的横向各向同性介质系统，探讨了各向异性介质中接收函数表现出的横波分裂、能量偏离等特征，并系统剖析了各向异性介质对称轴方位角、倾角以及各向异性层位分布对接收函数方位变化花样的影响。

The research results showed that the effects of personality characteristics on kinesthesis position accuracy of elbow joints and stability of hand action were not significant,the kinesthesis position accuracy of elbow joints obviously increased by using the rationing motor load, but the stability of hand action did not obviously change.

研究结果表明：个性特征对肘关节动觉方位准确性和手动作稳定性的影响不显著；定量运动负荷可以使肘关节动觉方位准确性明显提高，而手动作稳定性变化不显著。

For precision azimuth, as in gunfire control, a double-lobe pattern (figure 3) can give great directional precision by finding the direction in which the echo "pips" for both lobes are of equal heights. This is called "lobing".

当需要精确的方位角，如指挥火炮时采用双波瓣发射，两波瓣回迹强度相等时便可获得精确的目标方位角，这被成为&波瓣法&。

This paper is a study of the polysemy of a localizer 头 as distributed in different Chinese dialects.

本文研究了汉语方言中&头&的几种方位义，认为这些方位义形成于南北朝到宋代这段时间。

Good as a half-wave dipole, and in addition will give highgain in the most favored directions, even though that is overnarrow azimuths.

另外它也能在不少的方向上给出高的增益，甚至超出窄的方位角（也可意译成：它的方位角不一定狭窄

The composition and distribution of lichens were influenced by the aspects of the trucks, host trees and their sizes. Richer number and amounts of lichens are found on southern aspect of trunks. Vaccinium duclouxii was the host tree with the richest epiphytic lichens in the forests in the area . Most epiphytic lichens occurred on medium stems of DBH 5.0–25.0 cm.

树干方位、宿主种类和宿主径级等都对附生地衣的物种组成和多样性有着重要影响，附生地衣更多地出现于树干南向方位，云南越桔的附生地衣最为丰富，胸径5.0–25.0 cm 的树木上附生地衣较多。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。