- 更多网络例句与具有卫星的相关的网络例句 [注:此内容来源于网络,仅供参考]
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Finally, applications of the anomalous propagation of microwave in tropospheric ducts are discussed: in connection with concrete radar parameters, effects of ducts on radar range and detection performance are discussed, the results obtained are of great value for the overall design of radar systems; by use of the interference standards of ITU-R, the co-ordination area of satellite earth-station under tropospheric ducts environment is studied ; by explaining the relationship between evaporation duct and advection fog, a new way to forecast sea advection fog from evaporation duct is provided.
最后讨论了对流层大气波导环境下电波异常传播特性的应用:结合具体的雷达系统参数,模拟计算了大气波导对雷达作用距离及发现概率的影响,对雷达系统的总体设计具有重要的参考价值;对表面大气波导环境下的卫星地球站通信协调区域进行了确定,从理论上很好地给出了协调距离量级的概念,为卫星地球站与地面微波站之间的协调提供了依据和参考;分析了利用海面蒸发波导来快速预测平流海雾的新方法,完善了平流海雾的预报方法,对海上安全作业和生产具有重要的意义。
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with the development of satellite navigation communication,antenna is a very important unit,performance of the satellite navigation communication system is affected by it partly.a new type of bifilar helix for satellite navigation communication system is introduced,and the traving-wave bifilar helix is analyzed briefly.meanwhile,the design and the test results are given.the results show that the antenna possesses excellent circular hemispherical beam with wide angle circular polarization and better impedance match,and has a compact structure and high integration.it can be applied in caps systems successful.
小 摘要:随着卫星导航通信技术的迅速发展,天线作为卫星导航通信系统中的重要部分,在一定程度上决定着卫星导航通信系统的性能。介绍一种用于卫星导航通信系统的双臂螺旋天线,讲述爬行波式螺旋天线的设计过程,并给出最终测试结果。结果表明,该天线具有优良的圆对称半球波束,良好的广角圆极化特性和优良的阻抗匹配特性,其结构简单、紧凑,为通信入站回传提供了一种优良的选择。
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Satellite lesions were found in most films. the x-ray appearances of pulmonary tuberculosis post kidney transplanation included patch and larger confluent consolidation (6 cases), and miliary tuberculosis(4 cases).
结果 糖尿病并发肺结核的ct表现为:大片融合性肺实变(10例),在单一病变区内有多发小空洞(9例),病变不按肺段分布(2例),多数病变具有卫星灶。
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Propellant tank and high pressure vessel are important component of satellite prolusion system .
1引言卫星用推进剂贮箱和高压气瓶是卫星推进系统的一个重要部件,对卫星推进系统的性能,可靠性和具有举足轻重的影响。
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Customers are now demanding end-to-end service. When Inmarsat acquired Segovia in 2009, the new company gained the capability to offer ground equipment and facilities to go alongside its satellite services.
顾客也正在要求一对一的服务。2009年海事卫星组织收购了塞戈维亚,新组建的公司就具有向卫星的地面设备和设施提供服务的能力。
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Classic hardtop styling, with no B-pillar CTS production windshield laid at a faster angle to create a sleeker profileChrome, split seven-spoke wheel design; 20-inch front wheels and 21-inch rear wheels Sculpted lower front fascia with unique brake-cooling vents Slim-profile outside mirrors XLR-type hidden door handles with proximity remote opening Unique front fender vents Diamond-cut rear fascia with mesh lower grilles and center-outlet exhaust Taillamps with a subtle fin profile and are highlighted with LED lighting technology with light pipes Rear spoiler integrated into the center high-mounted stop lamp Sculpted roof-mounted antenna for OnStar, XM Satellite Radio, etc.
经典硬顶的设计风格,没有B柱,挡风玻璃生产中旅以更快的角度作出规定,以创造一个更光滑profileChrome,分7辐轮毂设计,20英寸前轮和21英寸后轮向内凹陷下具有独特的前仪表板刹车冷却喷口轻薄外后视镜XLR型隐蔽接近门把手的远程开放独特的前挡泥板通风口钻石切割与网格的微妙鳍配置较低的格栅和中心排气出口筋膜后尾灯,并与照明技术,突出了光管后扰流器集成到中央高位安装停止灯设计的弧线车顶安装了卫星导航,XM卫星收音机,天线等
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According to the energy conservation theory, BOM and CSIM4 were coupled. The BOM has no treatment on transmission solar radiation, which is of great importance when the model is adapted to Arctic Ocean. So the treatment was introduced to BOM. Through numerical test on different lead albedos, it was found that sea ice thickness is not so sensitive to lead albedo, which may be contribute to the lead occupies little ratio within multiyear sea ice pack. The reason of summer over-melt of arctic sea ice is the NCEP reanalysis downward solar radiation being larger than its reality. Then the arctic sea ice climate variability was simulated. Results showed that: simulated ice thickness change is in accord with the submarine investigated mean sea-ice draft changes. Simulated annually maximum ice thickness along the Eurasian continental oceans are closely related to the observed ones. The long-term mean simulated ice motion has the same features of the SSM/I derived ice motion. Sea ice extents in differential sub-regions have same trends comparing to the satellite passive-microwave data derived ones. Simulated ice concentration is closely related to the observed in the Arctic sub-regions. Sea ice flux through the Fram Strait involves ice concentration, motion and thickness. It is a composite criterion for sea ice model evaluation. The simulated ice area and volume export through the strait accord with the satellite derived or statistically reconstructed ones.(5) The simulated ice thickness climate variability and mean sea surface current of the coupled model were analyzed, results showed: the total ice volume in the Arctic Ocean has a significant decreasing trend. The volume variability is of a 10-year timescale oscillation, with two major periods of 12-13a and 18-20a. Mean ice thickness in the arctic sub-seas has different tendencies. It has an increasing trend in the Barents-Kara Sea and Baffin Bay-Labrador Sea, and decreasing in the others. The characteristic time scale of 7-10a wherein the river discharges leads the Fram Strait ice volume export is about the period that river water takes to be conveyed across the Arctic Ocean.(6) Using the simulated ice distribution in the Arctic Ocean and China precipitation, air temperature and SST in tropical key regions, the climate teleconnection were studied. Result showed: When the mean sea ice thickness is large in the central Arctic Ocean and Chukchi-Beaufort Sea , and small in the Barents-Kara Sea and Baffin Bay-Labrador Sea , the precipitation in South China, Tibetan Plateau, and the north part of Northeastern China are always smaller than normal, and v. v. When the mean ice thickness is small in CA, BC, East Siberian Sea and Greenland-Iceland-Norwegian Sea , and large in BL, The air temperature in north-eastern China, the southern of Tibetan Plateau, and Hainan Island, are always lower than normal, and v. v. In addition, when the sea ice is thick in BC and BL, the SST is larger in the middle and eastern Pacific Ocean, and is smaller in the tropical Southeastern Indian Ocean.
由于BOM没有考虑透射太阳辐射的物理过程,研究表明透射太阳辐射对北冰洋的能量收支起到重要作用,因此在BOM模式中引入了对透射太阳辐射的处理;通过对不同水道反照率的数值试验表明海冰厚度对水道反照率的敏感性不强,可能与海冰区水道面积占的比率很小有关;而模式模拟的北极海冰夏季&过度融化&主要源于NCEP再分析资料提供了偏大的太阳短波辐射;对北极海冰的气候变率进行了模拟研究,结果表明:模拟的海冰厚度变化与潜艇探测的海冰吃深度变化具有一致性;模拟和观测的亚欧大陆沿海的年内最大海冰厚度有很好的相关;模拟的海冰移速与长期平均的卫星反演的海冰移速具有相同的速度分布特征;模拟的各个海区海冰面积的变化趋势与卫星反演资料分析的结果基本一致;模拟与观测的主要海洋分区的海冰密集度具有很好的相关:弗瑞姆海峡的海冰体积和面积的输送涉及到海冰密集度、厚度和移动速度,是判断模式模拟能力的一个综合的指标,模式模拟的结果与卫星反演或重建的面积输送、体积输送具有很好的一致性;(5)分析了模拟的北极海冰厚度的气候变率及气候平均表层海流场,结果表明:北极海冰的总体积有显著减少的趋势,北极海冰总体积的变化具有10a际尺度振荡的特点,存在18-20a和12-13a两个主周期;北极海冰的平均厚度在各个海区的变化趋势不同,在巴伦支—喀拉海和巴芬湾—拉布拉多海地区海冰厚度有显著的增加趋势,而其它海区存在减少的趋势;通过对模拟的气候平均表层海流的分析表明,北极河流流量超前弗瑞姆海峡海冰流量7-10年的特征时间尺度与表层海流的气候分布存在着必然联系:(6)利用模拟结果以及中国降水、气温和热带关键区SST资料,讨论了北极各海区海冰平均厚度与中国降水、气温以及热带关键区SST的关系,结果表明:在北极中心海区和楚科奇—波弗特海海冰厚度偏大,在巴伦支—喀拉海以及巴芬湾—拉布拉多海海冰厚度偏小,则中国降水在华南地区、青藏高原和东北北部降水偏少,反之相反;在北极中心海区、东西伯利亚海、楚科奇—波弗特海以及格陵兰海海冰厚度偏小,在巴芬湾—拉布拉多海海冰厚度偏大,则在中国东北地区、高原南部地区和海南岛附近气温偏低,反之相反;另外,北极楚科奇—波弗特海和巴芬湾—拉布拉多海海冰厚度偏大时,在热带中东太平洋海温偏高,而在热带东南印度洋海温偏低。
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The author has made a detailed analysis of the satellite gravity data over Wenchuan, Motuo, Zhongba, Jiashi and Taiwan Areas in China, where earthquakes more than magnitude of 6 took place in recent several decades. It is surprising that the gravity field patterns over these areas are extremely similar, which is characterized by the following features:(1)Paired positive and negative anomaly.(2)Epicenters usually were located between the pairs where the gradient of gravity field was the steepest.(3)The value of positive peak increased and its width decreased at higher order field.(4)The distance between positive and negative peaks varies in different tectonic background.(5)Different styles of crustmantle material diapirism in different stress fields. Geologically, rheological diapirism of high density crustmantle material could be a reasonable explanation to this unique pattern.
笔者详细分析了中国汶川、墨脱、仲巴、伽师和台湾等地的卫星重力资料(这些地区在近几十年来均发生过6级以上的大地震),惊奇地发现,在这些地区,卫星重力场的样式具有极大的相似性,它们表现在:(1)卫星重力场的正负异常值成对出现;(2)震中通常位于重力场峰值间的陡梯度带;(3)由低阶到高阶的重力场正异常的峰值增大而宽度变窄;(4)正、负峰值间的距离随所处的大地构造背景而变;(5)不同应力场壳幔物质底辟的样式不同,从地质上看,高密度壳幔物质的流变底辟作用,可以合理地解释这种独特的样式变化。
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Its multiple moons also have civilizations of their own, including the Hive moon, which is controlled by a green-skinned, slightly insectoid race of humanoids related to the main species on Nebulon.
它的多个复合的卫星也具有自己的文明,包括Hive卫星。该卫星被一种绿色皮肤的,和Nebulon上的主要生物种类——类人生物相比来说不足道的类昆虫生物所占据着。
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These sensors can be used in the area such as ship, vehicle, tank, satellite stability platform, robotics and many other areas.
此类传感器具有结构简单、抗振性好、性能价格比高等优点,可用于舰船、车辆、坦克、卫星稳定平台、机器人和自动化控制的各个领域,具有广阔的发展前景。
- 更多网络解释与具有卫星的相关的网络解释 [注:此内容来源于网络,仅供参考]
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Chinook salmon:大鳞大麻哈鱼
Banks等用微卫星对于冷水性大鳞大麻哈鱼(Chinook salmon)在人工繁育和捕获育种过程进行的描述和管理,证明微卫星技术在管理和保护濒临灭亡群体中具有较高的可靠性,是对鱼类进行群体遗传研究可信的分子标记.
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digital data network:数字数据网
数字数据网(Digital Data Network)是利用数字信道传输数据信号的数据传输网,他的传输媒介有光缆、数字微波、卫星信道及用户端可用的普通电缆和双绞线. 利用数字信道传输数据信号和传统的模拟信道相比,具有传输质量高、速度快、带宽利用率高等一系列好处.
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information era:信息时代
大多数人认为信息时代(Information Era)比较恰当. 虽然空间科学技术在今天具有很重要的作用,但不如信息技术那么普及、覆盖面广,信息技术可以包括空间科学技术的主要内容,如遥感卫星、全球定位系统、遥测卫星都是为获取信息与传输信息服务的,
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satellite geodesy:卫星大地测量
与传统导航、定位方法比较,使用NNSS导航和定位具有不受气象条件的影响、自动化程度较高和定位精度高的优点,它开创了海空导航的新时代,也揭开了卫星大地测量(satellite geodesy)的新篇章.
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Janus:土卫十
说明: 土卫十 (Janus)是一个较为怪异的土星卫星. 首先,土卫十绕行土星的轨道相当特殊,它定期和距离它五十公里远的同伴姐妹卫星-土卫十六(Epimethus)互换位置. 土卫十比土卫十六略大,具有马铃薯状的外观,直径190公里. 其次,
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karat:克拉
俄罗斯拉沃奇金科研生产联合体建造的一个名为"克拉"(Karat)小卫星通用平台,包括燃料和结构后备资源在内,整个平台重量仅为96公斤. 在当今世界越来越重视研制小型卫星的背景下,俄罗斯科学家们的这一研究成果具有特殊的意义.
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oersted:厄斯特
1980年,磁场卫星(Magsat)测量了地球表面上的磁场;另一枚卫星厄斯特 (Oersted)则是在1999年起进行同样的测量. 假设地函的电流可以忽略,研究者可利用卫星观测到的结果,以数学方法推算出磁场在地核顶部的分布. 地核内具有更为剧烈、复杂的磁场,
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Titan:(提坦)
"提坦"(Titan)既不是一个家喻户晓的名称,亦不是一个人人皆知的世界. 当我们测览一张熟悉的太阳系天体表时,我们通常很少考虑到它的. 但是,最近几年来,这颗土星的卫星已经作为一个令人感到特别兴趣并且对于未来探索具有重大意义的地方而出现在人们面前.
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Vicente:韦森特
利用气象海洋数据资料和卫星遥感图片,分析研究了2005年第16号热带气旋"韦森特"(VICENTE)的特征,从最先的初始扰动到自身环流的分裂发展重组过程,以至当时周围相对应的大气环流,发现该热带气旋活动过程具有很多特性.对其移动过程进行的综合分析表明,
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warm start:温启动
它每天更新一次,有效时间可达数周. 对于GPS终端来说,启动开机时本身是否具有有效的卫星信息,将决定它第一次定位的速度. GPS的启动分为三种类型,冷启动(Cold Start)、温启动(Warm Start)和热启动(Hot Start).