关于卫星导航论文范文资料

2020年高考语文试卷作文题共11道，其中5道由教育部考试中心命制，天津、上海、江苏、浙江等省市各命制1道，北京命制2道。试题以材料作文为主，命题把握时代脉搏，紧贴时代精神，落实立德树人根本任务，加强应用写作能力考查，引导当代青年坚定理想信念、厚植家国情怀、拓宽国际视野、培养奋斗精神。全国Ⅰ卷阅读下面的材料，根据要求写作。春秋时期，齐国的公子纠与公子小白争夺君位，管仲和鲍叔分别辅佐他们。管仲带兵阻击小白，用箭射中他的衣带钩，小白装死逃脱。后来小白即位为君，史称齐桓公。鲍叔对桓公说，要想成就霸王之业，非管仲不可。于是桓公重用管仲，鲍叔甘居其下，终成一代霸业。后人称颂齐桓公九合诸侯、一匡天下，为“春秋五霸”之首。孔子说：“桓公九合诸侯，不以兵车，管仲之力也。”司马迁说：“天下不多（称赞）管仲之贤而多鲍叔能知人也。”班级计划举行读书会，围绕上述材料展开讨论。齐桓公、管仲和鲍叔三人，你对哪个感触最深？请结合你的感受和思考写一篇发言稿。要求：结合材料，选好角度，确定立意，明确文体，自拟标题；不要套作，不得抄袭；不得泄露个人信息；不少于800字。全国Ⅱ卷阅读下面的材料，根据要求写作。墨子说：“视人之国，若视其国；视人之家，若视其家；视人之身，若视其身。”英国诗人约翰•多恩说：“没有人是自成一体、与世隔绝的孤岛，每一个人都是广袤大陆的一部分。”“青山一道同云雨，明月何曾是两乡。”“同气连枝，共盼春来。”……2020年的春天，这些寄言印在国际社会援助中国的物资上，表达了世界人民对中国的支持。“山和山不相遇，人和人要相逢。”“消失吧，黑夜！黎明时我们将获胜！”……这些话语印在中国援助其他国家的物资上，寄托着中国人民对世界的祝福。“世界青年与社会发展论坛”邀请你作为中国青年代表参会，发表以“携手同一世界，青年共创未来”为主题的中文演讲。请完成一篇演讲稿。要求：结合材料内容及含意完成写作任务；选好角度，确定立意，明确文体，自拟标题；不要套作，不得抄袭；不得泄露个人信息；不少于800字。全国III卷阅读下面的材料，根据要求写作。人们用眼睛看他人、看世界，却无法直接看到完整的自己。所以，在人生的旅程中，我们需要寻找各种“镜子”、不断绘制“自画像”来审视自我，尝试回答“我是怎样的人”“我想过怎样的生活”“我能做些什么”“如何生活得更有意义”等重要的问题。毕业前，学校请你给即将入学的高一新生写一封信，主题是“如何为自己画好像”，与他们分享自己的感悟与思考。要求：结合材料，选好角度，确定立意，自拟标题；不要套作，不得抄袭；不得泄露个人信息；不少于800字。全国新高考Ⅰ卷阅读下面的材料，根据要求写作。面对突发的新冠肺炎疫情，国家坚持人民至上、生命至上，果断采取防控措施，全国人民紧急行动。人们居家隔离，取消出访和聚会；娱乐、体育场所关闭；政务服务网上办理；学校开学有序推迟；公共服务场所设置安全“一米线”。防疫拉开了人们的距离。城乡社区干部、志愿者站岗值守，防疫消杀，送菜购药，缓解燃眉之急；医学专家实时在线，科学指导，增强抗疫信心；快递员顶风冒雨，在城市乡村奔波；司机夜以继日，保障物资运输；教师坚守岗位，网上传道授业；新闻工作者深入一线，传递温情和力量。抗疫密切了人们的联系。请综合以上材料，以“疫情中的距离与联系”为主题，写一篇文章。要求：选准角度，确定立意，明确文体，自拟标题；不要套作，不得抄袭；不得泄露个人信息；不少于800字。全国新高考Ⅱ卷阅读下面的材料，根据要求写作。读万卷书，行万里路。无论读书还是行路，我们都会与地名不期而遇。有些地名很容易让你联想到这个地方的自然特征、风土民情、历史文化、著名人物等；有些地名会唤起你的某种记忆与情感，或许是一段难忘的故事，又或它对你有着特殊的意义。电视台邀请你客串《中华地名》主持人。请以“带你走近_________”为题（补充一个地名，使题目完整），写一篇主持词。要求：结合材料，选好角度，确定立意，明确文体，切合身份；不要套作，不得抄袭；不得泄露个人信息；不少于800字。北京卷从下面两个题目中任选一题，按要求作答。不少于700字。将题目抄在答题卡上。（1）2020年6月23日，北斗三号的最后一颗卫星成功发射，标志着我国自主建设、独立运行的北斗卫星导航系统完成全球组网部署。整个系统由55颗卫星构成，每一颗都有自己的功用，它们共同织成一张“天网”，可服务全球。材料中“每一颗都有自己的功用”，引发了你怎样的联想和思考？请联系现实生活，自选角度，自拟题目，写一篇议论文。要求：论点明确，论据充实，论证合理；语言流畅，书写清晰。（2）当今时代，我们每天都会面对各种各样的信息。其中有一条信息，或引发了你的感悟，或影响了你的生活，或令你振奋，或使你愧疚，或让你学会辨别真伪……请以“一条信息”为题，联系现实生活，展开联想或想象，写一篇记叙文。要求：思想健康；内容充实，有细节描写；语言流畅，书写清晰。天津卷阅读下面的材料，根据要求写作。“中国面孔”是全球热播纪录片里充满家国情怀的杜甫，是用中医药造福人类荣获诺贝尔奖的屠呦呦，是医务工作者厚重防护服下疲惫的笑脸，是快递小哥在寂静街巷里传送温暖的双手……也是用各种方式共同形塑“中国面孔”的你和我。走过2020年的春天，你对“中国面孔”又有什么新的思考和感悟？请写一篇文章。要求：①自选角度，自拟标题 ②文体不限（诗歌除外），文体特征明显③不少于800字 ④不得抄袭，不得套作上海卷世上许多重要的转折是在意想不到时发生的，这是否意味着人对事物发展进程无能为力？请写一篇文章，谈谈你对这个问题的认识和思考。要求：（1）自拟题目；（2）不少于800字。江苏卷根据以下材料，选取角度，自拟题目，写一篇不少于800字的文章；除诗歌外，文体自选。同声相应，同气相求。人们总是关注自己喜爱的人和事，久而久之，就会被同类信息所环绕、所塑造。智能互联网时代，这种环绕更加紧密，这种塑造更加可感。你未来的样子，也许就开始于当下一次从心所欲的浏览，一串惺惺相惜的点赞，一回情不自禁的分享，一场突如其来的感动。浙江卷每个人都有自己的人生坐标，也有对未来的美好期望。家庭可能对我们有不同的预期，社会也可能会赋予我们别样的角色。在不断变化的现实生活中，个人与家庭、社会之间的落差或错位难免会产生。对此，你有怎样的体验与思考？写一篇文章，谈谈自己的看法。【注意】①角度自选，立意自定，题目自拟。②明确文体，不得写成诗歌。③不得少于800字。④不得抄袭、套作。

2020高考作文热点速递     链接:

高考作文素材积累：

1、放弃

春秋末期，范蠡助越王勾践实现霸业后果断放弃荣华富贵，下海经商，最终成为一名成功的企业家。而他的亲密战友文种，舍不得放弃，最终导致杀身之祸。

2、威灵顿不惧失败

威灵顿元帅失败而不气馁，他躲在雨中的看到，蜘蛛快结成的网不断被风雨吹坏，仍然继续在结网，于是重振旗鼓在滑铁卢战役一举打垮拿破仑。

3、李时珍与《本草纲目》

明代李时珍，发现以前药物书中有很多错误，立志要编写一部药物书籍。历经艰辛，走千山万水，用了三十多年，终于写成了划时代的医药巨着――《本草纲目》。

4、徐霞客着书

明代地理学家徐霞客，年轻时便立下“探奇于名山大川”的宏愿。后来多次遇险，几乎丧命，但他始终没有畏惧，最终给人留下了具有重大学术价值的《徐霞客游记》。

具体的范文模板链接： 提取码: 7r1w

GPS1. SpaceThe space is part of GPS satellite by 24 work [1], it is located above the surface of the 20 200km, evenly distributed in six track surface (4) each track surface, orbit for 55 ° Angle. In addition, there are four star orbiting satellites active backup. The distribution of satellite in global anywhere at any time can be observed in 4 above, and can keep good satellite positioning accuracy of geometrical image solution. This provides a continuous on time in the global navigation skills. GPS satellite produces two groups, one group called Morse code (C/A Coarse/Acquisition Code11023MHz), A group called the P (Procise Code 10123MHz), P Code for higher frequency, not suffer interference, high precision, so by the U.S. military control, and the password, generally, mainly for folk cannot U.S. military service. C/A code for measures to lower accuracy, and deliberately used mainly open to folk.2. The ground controlThe ground control station by a master, five global stations and 3 ground control station. There are equipped with precision of the station clock and continuous measuring cesium visible satellites to accept machine. The satellite observation stations will obtain data, including the ionosphere and meteorological data, after initial treatment, to master station. Master station from various stations, satellite tracking data calculated the orbit and clock parameters, then will result to 3 ground control station. The ground control station in each satellite run over to the navigation, master station instructions and data into a satellite. The injection of each star GPS satellite, and in every time inject stood range from satellite before finally injection. If a ground fault, so in the satellite navigation of stored information can also be used for a period of time, but the navigation precision will gradually decrease.3. User equipment partsUser equipment parts namely GPS signal receiver. Its main function is to capture by certain Angle of satellite deadline to choose to follow these satellites and satellite, the operation. When the receiver to capture the satellite tracking, after receiving antenna can be measured and satellite pseudo distance and the distance change, satellite orbits parameters, such as the demodulation data. Based on these data, the receiver can handle the computer by positioning solution method and computing the user's position in the longitude and altitude geographical position, speed, time, etc. The hardware and software receivers in GPS data post-processing software package and form a complete GPS user equipment. GPS receiver unit and receiving antenna structure is divided into two parts of the unit. Receiver generally USES machine and together two kinds of dc power supply. Setting machine aims to replace the power supply without interruption continuous observation. In use within the time machine power battery charging automatically. After shutdown, machine battery power for the RAM, memory, in order to prevent the loss of data. At present various types of accept machine, weight and small volume and light, facilitate the field observation.The Ground control system (by now), the Station so the control Station (Master), so now the Antenna (Ground), the Antenna control Station, colo springfield, Colorado (are). The ground control station is responsible for collecting information by satellite, and alex, relative to star satellite data from the atmosphere correction. Secondly, the existing users receiver for two and two, double-frequency due to price factor, general user buys more for single-rate receiver.Aiming at the application of GPS road engineeringThe application of GPS in road construction, is mainly used to establish various road engineering control network and determination of the control points electricity, etc. Along with the rapid development of the highway to survey technology, puts forward a higher request, due to long, known points less, therefore, with the conventional measure method not only, and the net difficulties are hard to meet the requirement of high precision. At present, China has gradually establish lines using GPS technology, then head high precision control network layont wires with conventional methods. Practice has proved, in a few tens of kilometers within the scope of the point error only 2 centimeters, reached the conventional method to realize the accuracy, but also greatly ahead of time. GPS technology also applied to the control measure of large bridge. Since it is unnecessary to tong, can form strong nets, improve accuracy of inspection, via conventional measure fulcrum is effective. GPS technology in the measurement of the tunnel has broad prospect of application, GPS, reduced need through conventional method, the intermediate links, therefore, high speed, high accuracy, significant economic and social benefits.A GPS navigation and traffic management in automotive applicationsThree-dimensional navigation is the primary function, GPS, ships, aircraft and ground vehicles pacers can use GPS navigation device for navigation. Car navigation system is in the global positioning system (GPS developed on the basis of a new technology. Car navigation system by GPS navigation, self-discipline, navigation and microprocessor, speed sensor, gyro sensor and cd-rom drives, LCD display. GPS navigation systems and electronic map, radio communication network, computer vehicle management information system, combining can achieve vehicle tracking and traffic management and many other functions.A GPS in long-distance passenger vehicle management application (for example),In the first set of professional long-haul GPS vehicle management system, and long-distance communication GPS intelligent management system, for example, it is combined with the satellite positioning technology, GPRS/CDMA communications business, GIS, image collection technology, computer network technology, and database in the company to build a passenger control (C/S structure and B/S structure combining), and the other for points, the public security bureau and control YunGuan departments and departments of the control system, established by the control center system, wireless communication system platform (GPRS/CDMA), global positioning system (GPS), four parts and trackside equipment all-weather, a full range of driver and vehicle tracking management platform, System can be registered vehicle dynamic tracking and monitoring implementation, pictures, driving record, management, data analysis and so on the function, monitoring vehicles in electronic map, and display of vehicles running track data, Operating terminal optional internal network or the Internet server to visit and through the center to provide online IE browser integrated passenger management data analysis of the control system (B/S structure), And the capacity of the system software available according to the center of the hardware configuration and operating terminal server, the most greatly expanded, net vehicles 500,000 can not only is long, can the passenger vehicles such social vehicles. And the system still can use group management, different types of vehicles into different groups, facilitate the operation management.GPS technology application examples in the navigatorGPS navigators international leading brand: Ahada YiHang (of) -- from silicon valley, now login China!The core products function:1) map queryA penny saved is a penny gained in operation on a terminal search your destination location.A penny saved is a penny gained can record you always want to place, and retain information, also can be Shared with others and the location information.A penny saved is a penny gained fuzzy query your attachment or a location near the station, hotel, such as ATM.2) route planningA penny saved is a penny gained GPS navigation system will be set according to the starting point and destination, automatic programming line.A penny saved is a penny gained planning routes whether can be set to pass some ways.A penny saved is a penny gained planning routes whether can avoid high-speed etc. Function.3) automatic navigationA penny saved is a penny gained speech navigation:To provide drivers advance in speech, navigation condition intersection traffic information, such as a way to understand the wizard tells you how to drive to the destination. Navigation in one of the most important function, make you need, through watching operation terminal voice prompt can safe destination.A penny saved is a penny gained picture navigation:In the end, will display operate maps and position of the car now, driving speed, the destination of the route, planning, crossing the road to tip.A penny saved is a penny gained redesign line:When you have the line planning, or go wrong when crossing, GPS navigation system according to your present position, for you to plan a new route to the destination.GPS principleGPS navigation system is the basic principle of measuring the satellite to known position of the distance between the user receiver, and then integrated satellite data can know the location of the receiver. To achieve this objective, the position of the satellite can according to record the clock time on satellite star found in a calendar. Visible GPS navigation system is part of the satellite launch navigation ceaselessly. However, due to the use of the user to accept machine with satellite space-borne clock clock synchronization, may not always except user 3d coordinate x, y, z, will also introduce a Δ t is the difference between the satellite and the receiver as unknown, then use four equations will these four unknown. So if you want to know, the receiver's place at least four satellites can receive the signal.GPS receiver can receive the GPS clock can be used to accurately on the two levels of second time information, Used to forecast the next few months in the general position of satellite prediction star alex, Can be used to calculate the location for the satellite radio star alex, the coordinates for a few meters to dozens of accuracy of each different, rice (change) satellite, And the GPS system information, such as satellite.GPS receiver to code measurement can get satellite receiver, because of the distance to the clock contains receiver satellite transmission error, error and the atmosphere is called pseudorange. 0A yards of measured pseudorange called UA yards pseudorange and accuracy for about 20 meters of P yards, measured pseudorange called P yards pseudorange and accuracy for about 2 meters.GPS receiver of received signal, decoding technology, or other information on the carrier modulation in removed, can restore carrier. Strictly speaking, the carrier phase should be called the carrier frequency phase, it is patted the received by doppler frequency influence of satellite signal receiver carrier phase and machine generated signal phase difference oscillations. General bell in the epoch receiver determined to keep time measurement, satellite signal, it can track record of phase change, but start when the value of the receiver and satellite observations of the oscillator is not know the initial phase of the epoch, also don't know phase integers, namely the fuzzy degrees, only in data processing as parameters. Phase observations of high precision and mm, but the premise is a whole week, so only in fuzzy relative positioning, and a continuous observation can use phase observations, and to achieve superior level meters positioning accuracy of also only using phase observations.According to the localization way, GPS positioning and relative into single point positioning (difference). According to a single point positioning receiver is the observation data to determine the position of the receiver, it only USES pseudorange observation, can be used as a compendium of navigation and positioning vehicles. Relative location (difference) is based on the observation data of two above receiver to determine the relative position between the observation methods, it can be adopted pseudorange observation may adopt phase observation and geodesy or engineering measurement shall be made phase observation value relative positioning.In the GPS observation satellite and the receiver is contained in the clock, atmospheric propagation delay, the multipath effect etc, in the positioning error when calculating by satellite radio star alex, the influence of error in relative positioning error when most public offset or weakened by positioning accuracy, so will greatly improve, double-frequency receiver can according to the observation of two frequency offset the atmosphere, the main part of the error of the ionosphere, high accuracy in the distance between the receiver when significant difference (air), should choose double-frequency receiver.