查询词典 RCS

The thesis mainly discusses decompounding approach of complicate targets" RCS computation, basing on the consideration of project application. First, the electromagnetic scattering of typical objects is analyzed. Second, The RCS of the complex target is computed using the decompounding approach, after breaking the drone into active parts and passive parts reasonably, then comparing with the result of typical object"s RCS from the faceting approach. Last, statistical characteristics of the drones RCS are deduced.

本文从工程应用方面考虑，采用部件分解法来计算复杂目标的雷达散射截面，主要的研究内容如下：首先对典型目标的电磁散射特性进行分析，然后合理布局靶弹的有源部分和无源部分的结构，采用部件分解法计算靶弹RCS，并与面元法计算的典型目标RCS进行对比分析，最后给出靶弹RCS的统计特性分析。

RCS of facetsof targets coated RAM was resolved by combining Impedance Boundary Condition and Geometric Optics and RCS of those edges were approximated by computing the RCS of edges of impedance wedge through Method of Equivalent Currents.

其中，涂覆目标面元的散射场是通过结合阻抗边界条件和几何光学法而得到；而涂覆目标棱边的散射场则是通过等效电磁流法求解阻抗劈的边缘绕射场近似得到的。

RCS of facets of targets coated RAM was resolved by combining Impedance Boundary Condition and Geometric Optics and RCS of those edges were approximated by computing the RCS of edges of impedance wedge through Method of Equivalent Currents.

其中，涂覆目标面元的散射场是通过结合阻抗边界条件和几何光学法而得到；而涂覆目标棱边的散射场则是通过等效电磁流法求解阻抗劈的边缘绕射场近似得到的。

The result of drone"s RCS is in good agreement with RCS of the typical object, which shows decompounding approach is valid in the project research of drone"s RCS computation.

仿真结果表明：靶弹的RCS与典型目标的RCS基本一致，说明部件分解法可以满足工程应用研究。

In this paper, the statistical characteristics of one plane and one helicopter's RCS dynamic measurement data are studied by using the χ^2 distributing, log-normal distribution and Rayleigh distributing model, along with the Kolmogorov fit test to goodness, the fitting results in some notableness level are acquired by using the three models for different aspect angles for two targets, and the degree of freedom distribution of χ^2 model in all aspect angles is obtained for two targets' RCS data.

文中以某歼击机和直升机为对象，应用χ^2分布、对数正态分布和瑞利分布模型，以及Kolmogorov拟合优度检验方法，研究其RCS动态测量数据的统计分布特征，得到了在一定显著性水平下，两种目标在不同视向角下对三种模型的拟合效果，同时得到应用χ^2分布拟合时模型半自由度随视向角的分布情况。

Experimental result shows that when the incident is vertically polarized, the head direction RCS average's variation along the relative curvature is of "W" shape and has 2 minimum values; when horizontally polarized, the head direction RCS average's variation is different in two bend fashions.

实验结果表明，垂直极化下头向雷达散射截面均值随弯度呈"W"形变化，有两个极小值；水平极化下两种弯折方式头向雷达散射截面均值变化趋势差异较大，上下弯折时呈"W"形变化，水平弯折时单调降低。

The stealth warplane for the microwave radar usually have complicated structures with the coating of wave absorption. On the base of calculation and modeling of the geometrical structure of the warplane in real size, the HF RCS of the air crafts under two different polarizations in different direction have been calculated with the FDTD. The result shows that the above mentioned stealth warplane have the obvious characterstics of frequency resonance, polarization and the relatively large RCS in HF Band 10-30dBm2, which can be used as the theoretical reference for selection of working frequency for sky wave OTH Radar and it also means that the sky wave OTH radar has good capability of anti-stealth targets quantitatively.

对微波雷达具有隐身作用的飞机，其形体较为复杂且表面涂敷有强吸波材料在对一种具有隐身几何外形结构实际尺寸飞机进行计算建模的基础上，文中采用FDTD技术得到了两种极化状态下该飞机无涂敷时不同方向上的短波雷达截面RCS值其结果显示了这种隐身几何外形飞机在短波波段有明显的频率谐振特性、极化特性和较大的RCS10-30dBm2，可为天波超视距雷达在选择工作频率时提供理论参考，并定量地说明天波超视距雷达具有较优的反隐身目标能力

On the contrary, those karyopyknosis could be seen till 17 days after injection in the treatment eyes. CONCLUSION: Z-LEHD-FMK could effectively defer the apoptosis of photoreceptors in RCS rats, which indicate that caspase-9 play an important role in the apoptosis of photoreceptor in RCS rats.

Z-LEHD-FMK能够延缓RCS大鼠感光细胞凋亡，合适的caspases抑制剂在适宜的时机应用对视网膜感光细胞凋亡具有一定的抑制作用。

In Wistar rats, latent period of a-wave in scotopic rod response after 1-week transplantation was shorten (P.05); and latent period of a-wave in scotopic rod response after 2-week transplantation was prolonged (P.05); while latent period of b-wave in scotopic maximum response after 1-week transplantation was shorten (P.05). In RCS rats, amplitude of a-wave in scotopic rod response and photopic response after 4-week transplantation was increased (PO.05); while latent period of a-wave in scotopic rod response after 4-week transplantation was shorten (PO.05).Conclusion 1. At the age of 3 months, photoreceptors of the RCS rat degenerated completely, which leaded to the reduction of amplitudes of a-wave and b-wave.

Wstar大鼠术后1周的暗适应视杆反应，a波潜伏期缩短o叼。05）；术后2周的暗适应视杆反应，a波潜伏期延长o功刀5）：术后1周的暗适应最大反应，b波潜伏期缩短o功刀5卜＊CS大鼠术后4周的暗适应视杆反应和明适应反应，a波振幅增大o功刀匀；术后4周的暗适应视杆反应，a波潜伏期缩短o＜0卜结论1、RCS大鼠在3月龄时感光细胞变性死亡，导致FERG的a、b波振幅明显降低；视网膜下腔仍存在感光细胞外节盘膜碎屑，外丛状层缺乏感光细胞的突触末端，同时Muler细胞出现反应性胶质纤维增生。

It is indicated that: 1 at evidence level of 0.01, the chaffs dynamic RCS presents chi-square distribution at S-band and X-band; 2 the density of chaff cloud would decrease with time, which will result in lower RCS; and 3 with increasing of frequency and decreasing of wavelength, the coherence effect between different chaffs would get less, which will result in weaker fluctuation.

结果表明，当显著性水平为0.01时，该箔条云在S波段和X波段的动态RCS服从χ^2分布；箔条云形成之后，箔条密度随着时间的推移而下降，导致其RCS减小；随着频率升高而波长减小，箔条间互耦效应将减小，箔条云RCS的起伏也将减小。

Vishnu entered a dark fourth dimensional dream that did not support his field or continued life.

毗瑟挐进入了一个第四密度的黑暗梦想，那里并不支持他的能量场或继续生命。

Leaders and decision-making persons use it to collect the data, including the information of unit work, handing in fee, oweing fee, prepaying fee,changing and afterpaying and account transfering of joining-insurance employee, and account paying of all kinds of insurances from hospitalization insurance institutions.The collected data is picked up, organized, switched and showed to user.

该子系统主要面向各级领导、决策分析人员；从各个医疗保险经办机构和定点医疗机构采集数据，包括在各个医疗保险经办机构处理的单位办公信息，单位缴费、欠费、预缴费信息，参保职工变更信息，参保职工增减变动信息，参保职工补缴信息，参保职工帐户划拨信息：包括各定点医疗机构处理的各险种帐户支出信息，各险种的统筹金支付信息等；将采集的数据提取，组织和转换，然后展示给用户。