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“北斗一号”的若干个地面跟踪站主要是用于导航卫星的轨道跟踪与卫星的完好性监测,在此基础上,我们可以将其改造为新系统的跟踪系统,扩充新的跟踪站,以确保导航和完备性数据的处理... “北斗一号”的若干个地面跟踪站主要是用于导航卫星的轨道跟踪与卫星的完好性监测,在此基础上,我们可以将其改造为新系统的跟踪系统,扩充新的跟踪站,以确保导航和完备性数据的处理。导航控制主要用于:整个星座的轨道确定与轨道外推;监测卫星的工作状况;在轨卫星钟的标准化;在轨信号精度的预测;生成地心参考框架;产生导航数据信息。完备性探测主要包括:对区域(或全球)覆盖的信号进行完备性监测;实时授即可观测到的完备性数据;集中处理生成所有卫星的完备性数据;提供所有卫星的完备性标识符。
我国正在加紧建设区域性GPS导航增强系统。利用 “北斗一号”的卫星导航增强系统是我国计划研制和建设的广域差分GPS系统。利用增强系统的地面设施,对卫星进行监测管理的目的,利用它的通信链路实现卫星和地面段的通信。
我国目前拥有若干个分布全国的GPS跟踪站和人卫激光观测站,经过适当的改造即可执行对我国新一代导航卫星的监测任务。利用人卫观测的高精度特点,完成对我国的导航卫星的高精度定轨,为进一步的导航定位服务创造条件。
由此可见,我国有大量的地面基础设施,经过适当的改造即可为我国的新一代导航定位系统提供地面控制中心站和卫星的监测跟踪站,导航信息的注入站等,为卫星导航系统的建设节省了大量的开支。改造工作要进行严密的统筹规划,必须要考虑到地理的分布和各种不同类型地面站的数量等因素,使其在新系统中承担不同的职责,达到对原有地面设施的最优利用和完成新系统的最优设计。
3.与国外系统兼容,增强我国系统的可靠性与抗干扰性
为了抓住卫星导航系统所拥有的巨大商机,夺回国内市场,进一步参与国际竞争与合作,我国第二代卫星导航系统应该与国际导航系统兼容。

要做到与国外系统的兼容性,主要通过对GPS/GLANASS/Galileo三个系统和我国的卫星导航定位系统的卫星坐标系统、卫星钟时间标准、接收机信号及导航电文格式的研究,制定组合后卫星导航系统的响应信号通讯标准和数据格式标准,达到与国际同步,多星座组合导航坐标框架及时间系统标准及格式。
国家安全、信息战争、航天安全、海洋安全、抗灾救灾、交通安全、紧急救援、突发事故处理、探险等等与国民经济和社会发展许多领域紧密关联的事务,对卫星定位系统的可靠性和抗干扰性要求最高,必需保证在任何时候不受国外敌对势力干扰,且导航系统在空间覆盖和时间连续性两方面都是无缝连接的。
为此,需要采取相应对策:①导航卫星地面跟踪站的跟踪方式采用两种或两种以上,如增加具有抗电子干扰功能的卫星激光测距跟踪方式;②建立能同时跟踪多种导航卫星系统的卫星地面跟踪站网络,并建立星基增强系统,实现信息服务自动化;③开发能接收和处理多种导航卫星信号的多星融合接收设备及硬软件系统,提高定位导航的可靠性。
三、对发展我国民用全球定位系统的建议
我国自主的卫星导航系统的发展,必须立足于我国的基本国情,目标是要建成一个具有世界先进水平的区域(或全球)卫星导航定位系统,以满足高技术条件下局部战争对导航定位的需要,逐步建成一个战术性能良好,运行稳定可靠,于未来军事斗争任务和武器装备发展相适应,完全自主的卫星导航定位系统。该系统应是一个全天候、连续、三维、被动式的高精度全球导航定位和定时系统,支持陆地,海洋和空中用户导航定位的需要,同时能做到与GPS/GLONASS/ GALILEO系统兼容。
1.完全自主,适合中国国情
导航卫星系统必须具有自主的控制能力,不能把未来高技术战争的保障手段掌握在别人手中。系统的建设和发展必须符合中国国情,即要与国防和国民经济建设的需要相适应,又要与技术,经济承受能力相适应。
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2011-06-27
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英文的:

"A number of beidou some ground tracking station is mainly used for navigation satellite orbit satellite tracking and proper monitoring, based on this, we can transform the new system for the tracking system, expansion of new tracking station, to ensure that the navigation and completeness data processing. Navigation control is mainly used in the whole constellation orbit determination and rail outside push; The working conditions of the satellite monitoring; The standardization of on-orbit satellite clock; The accuracy of the predictions; on-orbit signal Generating the reference frame; Produce navigation data information. Completeness detection include: to regional or global) cover (signal completeness monitoring; Real time can be observed award the completeness data; With all the focus on generating satellite data completeness; To provide all of the satellite's completeness identifier.

China is racing to construction regional GPS navigation enhance the system. Use "number one" of beidou satellite navigation and enhance the system is China's development and the construction plan wide-area differential GPS system. Use the facilities, enhance the system of the satellite monitoring management purposes, using its communications link realize satellites and ground segment of the communication.

China now has several distribution of GPS tracking station and the satellite laser observatory, through proper reform of our country can perform a new generation of navigation satellite monitoring task. Using satellite observation of high precision characteristics and the completion of the navigation satellite in high orbit determination, for further navigation and positioning services to create conditions.

Therefore, our country has a lot of ground infrastructure, through proper reconstruction in China can be a new generation of navigation and positioning system to provide the ground control center and satellite monitoring tracking station, navigation information into the station, in the construction of the satellite navigation system can save them a lot of spending. Reconstruction work to carry out a strict overall planning, and must take into account geographical distribution and all kinds of different types of such factors as the number of ground, so that in the new system of different jobs, to bear on the original ground facilities of the optimal utilization and complete the optimal design of the new system.

3. Compatible with foreign system, strengthening our system reliability and anti-interference

In order to catch satellite navigation systems have great business opportunity, back domestic market, further to participate in international competition and cooperation, the country's second generation satellite navigation system should be compatible with the international navigation system.

To do with foreign compatibility, mainly through GPS/Galileo GLANASS/three system in our country and the satellite navigation and positioning system satellites coordinate system, satellite clock time standards, signal and navigation message format of research, make combined satellite navigation system response signal communication standard and data formats, with international standards to sync, many signs coordinate frame and time combined navigation system standards and format.

National security, information security, ocean, and space war safety, devastated regions, traffic safety, emergency rescue and accident treatment, exploration, and so on and the national economic and social development is closely related to many areas of the business of satellite positioning system reliability and anti-interference highest demand, must make at any time from foreign interference, hostile forces and navigation system in space and time continuity covered both the seamless connection.

For this, we need to adopt corresponding countermeasures: (1) the navigation satellite ground tracking station tracking means USES two or more, if increase has the function of electronic jamming satellite laser ranging tracking method; (2) establish can at the same time tracking DuoZhong navigation satellite system ground satellite tracking station network, and establish the star and enhance the system, to realize information service automation; (3) the development can receive and process DuoZhong navigation satellite signal of receiving equipment and star fusion hardware and software system, improve the reliability of the orientation navigation.

Three, to develop China's civil global positioning system suggestion

Our country independent satellite navigation system development, must base on in our basic national conditions, the goal is to build a with the world's advanced level of area (or global) satellite navigation and positioning system, to satisfy the high technology conditions of local war positioning for navigation, and gradually built a tactical performance is good, the operation is stable and reliable, and in the future military mission and weapon equipment development adapt, completely independent satellite navigation and positioning system. The system should be a round-the-clock, continuous, 3 d, passive global navigation and positioning and high precision timing system, support the continents, oceans, and the air navigation positioning for users, and can do it and GPS/GLONASS/GALILEO system compatible.
1. Fully independent, suitable for China's national conditions

Navigation satellite system must have independent control ability, can't take the future high technology war security measure master in someone's hand. The construction and development of the system must accord with China's national conditions, that is, to the national defense and national economic construction and the need to adapt, and technology, economy and affordability.
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" The Big Dipper, first " several ground tracking station is mainly used for tracking and satellite navigation satellite orbits of good monitoring, on this basis, we can turn it into a new system of tracking systems, expansion of the new tracking station, to ensure that the navigation and completeness of the data processing. Navigation controls are mainly used for : the whole constellation of orbit determination and track extrapolation ; monitoring the working conditions of satellite ; standardization of in - orbit satellite clock ; signal accuracy of prediction in orbit ; generate a geocentric reference frame, generation navigation data information. Completeness detection include : signal to regional or global coverage completeness monitoring ; granting of completeness of the data can be observed in real time ; focus on completeness of all satellite data ; provides all satellite completeness of identifiers. Regional enhanced GPS navigation systems is stepping up its construction in China. " The Big Dipper, first " satellite navigation enhancement system is China's development plans and the construction of wide area differential GPS system. With an enhanced system of ground facilities for the purposes of satellite monitoring and management, leveraging its communication links for communication satellites and ground segment. China currently has several distribution GPS tracking stations and satellite laser stations across the country, after appropriate modification to the implementation of China's next - generation navigation satellite monitoring tasks. High - accuracy characteristics from satellite observations, completed in the high - precision navigation satellite orbit, creating conditions for further navigation and positioning services. This shows that China has a lot of ground infrastructure, through appropriate reform for China's new generation of navigation and positioning systems provides ground control center monitoring and satellite tracking station, navigation information into the station, for construction of the satellite navigation system to save a lot of expenses. Renovation work to tighter overall plan, must take into account geographic distribution and the number of different types of ground stations and other factors, so that they assume different responsibilities in the new system, achieving optimal use of existing ground facilities and optimal design of new systems. 3. Compatible with the foreign system, enhanced reliability and anti-interference system in China In order to seize the enormous opportunities of satellite navigation system has, to regain the domestic market, further participate in international competition and cooperation, China's second generation satellite navigation system should be compatible with the international navigation system. To achieve compatibility with systems in foreign countries, mainly by GPSGLANASSGalileo three system and China's satellite navigation and positioning system of satellites, satellite clock time coordinates system standards, research of receiver signal and navigation message format to develop combined satellite navigation signal communication system standards and data formats standards, reach and international synchronization, constellation navigation system standards and coordinate frame and time format. National security , and information war , and space security , and marine security , and disaster disaster relief , and traffic security , and emergency rescue , and burst accident processing , and expedition and so on and national economy and social development many area close associated of affairs , on satellite positioning system of reliability and anti - interference sexual requirements highest , required guarantee in any when does not by abroad hostile forces interference , and navigation system in space cover and time continuity two aspects are is seamless connection of . For this , need take corresponding countermeasures : ① navigation satellite ground track station of track way used two species or two species above , as increased has anti - electronic interference function of satellite laser ranging track way ; ② established can while track multiple navigation satellite system of satellite ground track station network , and established Star base enhanced system , implementation information service automation ; ③ development can received and processing multiple navigation satellite signal of more star fusion received device and the hard software system , improve positioning navigation of reliability . Third, the development of China's civilian global positioning system recommendations In China independent of satellite navigation system of development , must based on Yu in China of basic conditions , target is to built a has world advanced level of regional or global satellite navigation positioning system , to meet high - tech conditions Xia local wars on navigation positioning of need , gradually built a tactical performance good , run stability reliable , Yu future military struggle task and weapons equipment development phase adaptation , full independent of satellite navigation positioning system . The system should be an around-the-clock, continuous, three - dimensional, passive high - precision global positioning and navigation, and timing system, supports terrestrial, marine and air needs of the users navigation and location, at the same time can do GPSGLONASS GALILEO system - compatible. 1. Fully autonomous, suitable for China Navigation satellite systems must have the self control, cannot guarantee future wars means in other hands. System must meet the construction and development of China's national conditions, that is, to adapt to the needs of national defense and economic construction, and technology, and economic capacity to adapt.
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2011-06-27 · TA获得超过177个赞
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这才十分,那么长啊,你坑爹呢。。。
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幫幫忙吧,我急用啊,謝謝了!!
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