（雙語）《2016中國的航天》白皮書（5）
（九）空間碎片
Space debris
空間碎片監測、預警、減緩及防護技術體系逐步完善，標準規範體系不斷健全。空間碎片監測預警實現業務化運行，爲在軌航天器安全運行提供有力保障；防護設計技術取得突破，開展航天器空間碎片防護工程應用；全面實施“長征”系列運載火箭末級鈍化，對廢棄航天器採取有效離軌處置措施，切實保護空間環境。
China has improved the monitoring and mitigation of and early warning and protection against space debris. It has also enhanced standards and regulations in this regard. The monitoring of and early warning against space debris have been put into regular operation, ensuring the safe operation of spacecraft in orbit. China has also made breakthroughs in protection design technologies, applying them to the protection projects of spacecraft against space debris. In addition, all Long March carrier rockets have upper stage passivation, and discarded spacecraft are moved out of orbit to protect the space environment.
三、未來五年的主要任務
III. Major Tasks for the Next Five Years
未來五年，中國將加快航天強國建設步伐，持續提升航天工業基礎能力，加強關鍵技術攻關和前沿技術研究，繼續實施載人航天、月球探測、北斗衛星導航系統、高分辨率對地觀測系統、新一代運載火箭等重大工程，啓動實施一批新的重大科技項目和重大工程，基本建成空間基礎設施體系，拓展空間應用深度和廣度，深入開展空間科學研究，推動空間科學、空間技術、空間應用全面發展。
In the next five years, China plans to expedite the development of its space endeavors by continuing to enhance the basic capacities of its space industry, strengthen research into key and cutting-edge technologies, and implement manned spaceflight, lunar exploration, the Beidou Navigation Satellite System, high-resolution earth observation system, new-generation launch vehicles and other important projects. Furthermore, the country is to launch new key scientific and technological programs and major projects, complete, by and large, its space infrastructure system, expand its space applications in breadth and depth, and further conduct research into space science, promoting the integrated development of space science, technology and applications.
（一）航天運輸系統
Space transport system
研製發射無毒無污染中型運載火箭，完善新一代運載火箭型譜，進一步提升可靠性。
We will develop and launch medium-lift launch vehicles which are non-toxic and pollution-free, improve the new-generation launch vehicle family, and enhance their reliability.
開展重型運載火箭關鍵技術攻關和方案深化論證，突破重型運載火箭總體、大推力液氧煤油發動機、氫氧發動機等關鍵技術，啓動重型運載火箭工程實施。
Endeavors will be made to research key technologies and further study the plans for developing heavy-lift launch vehicles. Breakthroughs are expected in key technologies for the overall system, high-thrust liquid oxygen and kerosene engines, and oxygen and hydrogen engines of such launch vehicles. Thereafter the heavy-lift launch vehicle project will be activated.
開展低成本運載火箭、新型上面級、天地往返可重複使用運輸系統等技術研究。
China will conduct research into the technologies for low-cost launch vehicles, new upper stage and the reusable space transportation system between the earth and low-earth orbit.
（二）空間基礎設施
Space infrastructure
提升衛星系統水平和基礎產品能力，構建形成衛星遙感、衛星通信廣播、衛星導航定位三大系統，建設天地一體化信息網絡，基本建成空間基礎設施體系，形成連續穩定的業務服務能力，促進衛星及應用產業發展。
China is to improve its satellite systems and their basic related items, develop the three major satellite systems of remote-sensing, communications and broadcasting, and navigation and positioning, and build a space-ground integrated information network. In this way, a space infrastructure system capable of providing steady and sustained services will take shape, boosting the satellite and related applications industrial sector.
1、衛星遙感系統。按照一星多用、多星組網、多網協同的發展思路，發展陸地觀測、海洋觀測、大氣觀測3個系列，研製發射高分辨率多模式光學觀測、L波段差分干涉合成孔徑雷達、陸地生態碳監測、大氣環境激光探測、海洋鹽度探測、新一代海洋水色觀測等衛星，逐步形成高、中、低空間分辨率合理配置、多種觀測手段優化組合的綜合高效全球觀測和數據獲取能力。統籌建設和完善遙感衛星接收站網、定標與真實性檢驗場、數據中心、共享網絡平臺和共性應用支撐平臺，形成衛星遙感數據全球接收服務能力。
(1) Satellite remote-sensing system. In accordance with the policy guideline for developing multi-functional satellites, and creating networks of satellites and integrating them, we will focus on three series of satellites for observing the land, ocean and atmosphere, respectively. China is to develop and launch satellites capable of high-resolution multi-mode optical observation, L-band differential interferometric synthetic aperture radar imaging, carbon monitoring of the territorial ecosystem, atmospheric Lidar detection, ocean salinity detection and new-type ocean color observation. We will take steps to build our capabilities of highly efficient, comprehensive global observation and data acquisition with a rational allocation of low-, medium- and high-spatial resolution technologies, and an optimized combination of multiple observation methods. China will make overall construction and improvement on remote-sensing satellite receiving station networks, calibration and validation fields, data centers, data-sharing platforms and common application supporting platforms to provide remote-sensing satellite data receiving services across the world.
2、衛星通信廣播系統。面向行業及市場應用，以商業模式爲主，保障公益需求，發展固定通信廣播、移動通信廣播、數據中繼衛星，建設由高軌寬帶、低軌移動衛星等天基系統和關口站等地基系統組成的天地一體化信息網絡，同步建設測控站、信關站、上行站、標校場等地面設施，形成寬帶通信、固定通信、電視直播、移動通信、移動多媒體廣播業務服務能力，逐步建成覆蓋全球、與地面通信網絡融合的衛星通信廣播系統。
(2) Satellite communications and broadcasting system. This system is oriented toward industrial and market applications, and mainly operates through business models while meeting public welfare needs. China will develop both fixed and mobile communications and broadcasting as well as data relay satellites, build a space-ground integrated information network consisting of space-based systems such as high-earth-orbit broadband satellite systems and low-earth-orbit mobile satellite systems, and ground-based systems such as satellite-access stations. TT&C stations, gateway stations, uplink stations, calibration fields and other satellite ground facilities are to be built synchronously. These efforts are expected to bring about a comprehensive system capable of providing broadband communications, fixed communications, direct-broadcast television, mobile communications and mobile multimedia broadcast services. A global satellite communications and broadcasting system integrated with the ground communications network will be established step by step.
3、衛星導航系統。持續提升北斗二號系統服務性能。繼續開展北斗全球系統建設，計劃於2018年面向“一帶一路”沿線及周邊國家提供基本服務；2020年前後，完成35顆衛星發射組網，爲全球用戶提供服務；持續統籌推進北斗地基、星基增強系統建設，爲各類用戶提供更高精度、更爲可靠的服務。
(3) Satellite navigation system. China is to continuously enhance the service capacities of the Beidou-2. With sustained efforts in building the Beidou global system, we plan to start providing basic services to countries along the Silk Road Economic Belt and 21st-century Maritime Silk Road in 2018, form a network consisting of 35 satellites for global services by 2020, and provide all clients with more accurate and more reliable services through advancing the ground-based and satellite-based augmentation systems in an integrated way.
