China Space Military：Recon, Satcom, Navi, ASAT/BMD, Orbital Vehicle, SLV, etc.

[My-Analogous]

How much area of earth its cover now?

 

[JSCh]

“It seems that Yutu is currently more retired than deceased, and could yet wake up, with its plutonium heaters apparently protecting its internal electronics during hibernation.”


Best wish to Yutu!

Chinese media reported from ground space-tracking station that signal from Yutu was received recently(around CNY).

Chang'e 5 Test Mission Updates
Detailed Mission Overview, Launch Vehicle Info, Chang'e 3 Mission​

Chinese Chang'e 5 Test Mission begins Transition to Lunar Orbit
January 6, 2015

China's extended Chang'e 5 Test Mission has entered the next phase of its pathfinder mission to assess trajectories and technology for China's first robotic sample return mission to the Moon. After launching in late October atop a Long March 3C/E rocket, the Chang'e 5-T1 Service Module ferried a prototype Return Vehicle around the Moon to demonstrate a high-speed Skip Re-Entry to demonstrate that the vehicle could withstand the entry environment and the entry guidance system provided sufficient accuracy to successfully return lunar samples to Earth.

Avoiding re-entry, the Service Module boosted itself into a highly elliptical orbit around Earth from where it transferred to the Earth-Moon Lagrange Point 2, entering a semi-stable Lissajous Orbit behind the Moon.

On Sunday, the spacecraft conducted a departure maneuver to leave EML-2 and begin a transition into a Lunar Orbit. The maneuver used the spacecraft's smaller attitude control thrusters and the transfer to Lunar Orbit Insertion will take until mid-January. Entering an elliptical orbit around the Moon, the Service Module will conduct orbital adjustment to enter a lower orbit around the Moon, likely around 100 Kilometers in altitude since a similar orbit will be put to use on the Chang'e 5 mission.

Once in an operational orbit, the spacecraft will go through two Virtual Target Rendezvous exercises that will demonstrate trajectories and guidance techniques needed in the Autonomous Lunar Orbit Rendezvous that will be a critical part of the Chang'e 5 mission since the Ascent Vehicle containing samples acquired from the lunar surface will have to automatically link up with its return craft. These two exercises will take place in February and March.

Afterwards, the Chang'e 5-T1 Service Module will conduct imaging operations of the target landing zone for Chang'e 5 which has not yet been disclosed. To be able to gather high resolution imagery, the craft will likely adjust its orbit to set up low-altitude passes over the target area. Images delivered by Chang'e 5-T1 so far have shown the Earth, the lunar surface from a distance, tiny Earth with the Moon in the foreground and the exact opposite picture of Moon with Earth in the foreground.

Chang'e 5 Test Mission Updates - Spaceflight101

*****
中新网北京1月11日电 (姜宁 祁登峰)北京时间1月11日凌晨3时许，在北京航天飞行控制中心科技人员精确控制下，再入返回飞行试验器服务舱成功实施近月制动，进入远月点高度约 5300公里、近月点高度约200公里、飞行周期约8小时的环月轨道，继续为嫦娥五号任务开展在轨验证试验。
China News Network report that on 11 Jan 3 am, the service module successfully perform braking maneuver to enter a 5300 km apolune, 200 km perilune, period approx. 8 hr, lunar orbit.

据了解，北京中心后续还将在12日、13日凌晨连续实施两次近月制动，使服务舱最终进入高度约200公里、周期约127分钟的环月轨道，服务舱后续将在这个环月轨道上开展相关在轨试验，为嫦娥五号任务的关键飞控技术进行先期试验验证。
There will be two more braking maneuver on 12 and 13 Jan to put the service module into a circular 200 km, period 127 min lunar orbit.

再入返回飞行试验器服务舱回到环月轨道-中新网

Media also reported that Chang'e 5-T1 service module is currently still orbiting the moon.

 

[TaiShang]

How much area of earth its cover now?

I think this is the current coverage map:

***

Directions 2017: BeiDou’s road to global service

December 6, 2016 - By Li Wang

An effective approach has been taken by the BeiDou Navigation Satellite System (BDS), and significant progress has been witnessed in 2016, from the aspects of launching new satellites, verifying new technologies, promoting applications and industrialization, strengthening international cooperation, and formulating fundamental policies.

Construction Update. In March 2016, a BDS satellite was launched into an inclined geo-synchronous orbit (IGSO); another geosynchronous orbit (GEO) satellite was launched in June. These became the 22nd and 23rd BDS satellites overall and further enhanced service capability. The BDS has been maintaining stable operation, and the performance of BDS Open Services has steadily improved. The availability and continuity surpass 99.9%, which can satisfy the nominal requirements of 95% and 99.5%.

The deployment of a BDS global constellation has progressed steadily. Five new-generation BDS satellites have been successfully launched so far, to verify advanced signal structure, crosslink, on-board clocks with higher accuracy, and other new technologies. Test results showed that the inter-system technical status is coordinated, the accuracy of orbit prediction was increased by 50%, and accuracy of time maintenance was upgraded by about 60% due to crosslink.

Meanwhile, the construction of augmentation systems is being accelerated. A nationwide reference station network has been built, and the construction of the basic system has been completed. System performance is under test, including meter and decimeter level for wide-area real-time services, centimeter level for areas within Beijing, and millimeter level for post-processing services.

As for satellite-based augmentation system (SBAS), BDS is actively participating in the design and international coordination activities for the next generation dual-frequency multiple-constellation (DFMC) SBAS standards. The 30th SBAS Interoperability Working Group (IWG) meeting was successfully held in China.

The document “Development of BDS and Applications of Multi-Frequency Multi-Constellation Navigation Satellite Systems” was submitted by the Civil Aviation Administration of China (CAAC) during the 39th meeting of International Civil Aviation Organization. This represents Chinese civil aviation authority’s official support of construction of BDSBAS. Development of applications of multi-frequency multi-constellation has been proposed to the international civil aviation community.

BDS Applications. With the enhancement of BDS service capability, its applications are also making remarkable progress, already producing a BDS industrial chain which comprises the basic products, application terminals, application systems and operational services.

BDS-based chips have been upgraded in quality and quantity. Great efforts are being made to carry out demonstrations of BDS industrial and regional applications. Mass market applications are flourishing. Chinese industrial production in the field of satellite navigation reached 190 billion renminbi yuan (US$28 billion) in 2015, of which BDS would contribute about 30%. So far, BDS-related products have already been exported to more than 70 countries, and applications and services are available in over 30 countries along the Silk Road Economic Belt and 21st-Century Maritime Silk Road (the Belt and Road) region.

International Cooperation Activities. BDS continuously carries out bilateral and multilateral exchanges and cooperation, in line with the principle that “BDS is developed by China, and dedicated to the world.”

To provide better services for global users, BDS carries out exchanges and coordination with the other navigation satellite systems in terms of compatibility and interoperability, monitoring and assessment, frequency resource, augmentation systems and other areas. It also strives to implement applications cooperation with countries in the Asia-Pacific region, members in the Association of South-East Asian Nations (ASEAN) and the League of Arab States (LAS), to bring more benefits to a wider range. On multilateral platforms, BDS continuously contributes to efforts and meetings of the International Committee on Global Navigation Satellite Systems (ICG) and the Committee on the Peaceful Uses of Outer Space (COPUOS). In addition to these international academic activities, China has also been organizing the China Satellite Navigation Conference for seven sessions.

Fundamental Policies. A whitepaper on BDS released in June 2016 interprets its development concepts and propositions, and is available on the official BDS website. The major content includes: to provide open services for global users free of charge; to continuously improve service performance and enhance the service quality; to promote compatible applications with other navigation satellite systems and to improve users’ benefits; to disseminate BDS information in a timely manner; to protect the radio-navigation satellite frequency spectrum according to law and to firmly reject harmful interference; to enhance BDS applications, industrial development and international application; to actively carry out international cooperation and exchanges, to participate in multilateral activities in the field of international satellite navigation and to promote the ratification of the BDS by international standards.

The “BeiDou Navigation Satellite System Signal In Space Interface Control Document” (Version 2.1) was published in November.

As for the standardization process, the “BeiDou Satellite Navigation Standard System” (Version 1.0) has been released, and BDS has been included in the Receiver Independent Exchange Format (RINEX, Version 3.03), approved by the Radio Technical Commission for Maritime Services Special Committee 104 on GNSS Service, RTCM SC-104.

Follow-up Deployment Plans. In 2017, three to four launches of BeiDou satellites will occur. BDS will provide basic services to the countries along the Belt and Road region by 2018, and possess global service capability by 2020.

BDS will keep improving its nationwide reference station network and steadily enhance its service performance. The dense reference stations for the nationwide frame network will be constructed by 2018, providing meter and decimeter level real-time location services for users in China, even centimeter level service in some areas.

BDS will carry out the design, validation and construction of SBAS in accordance with international civil aviation standards. The first GEO satellite of BDSBAS will be launched in around 2018. The satellite-based augmentation services covering China and surrounding regions will be provided from 2020, to provide CAT-I services to civil aviation users.

China will promote construction of a national comprehensive positioning, navigation and timing (PNT) system based on BDS, and strive to establish such a national PNT system with a united benchmark, no-gap coverage, security and effectiveness by 2030, as well as to upgrade capabilities to provide time and space information.

Summary. BDS will boost the deployment of a global constellation, continuously enhance performance, fulfill its service commitments, make all efforts to advance satellite navigation applications, promote the development of GNSS, and better serve the world and benefit mankind.

 

[My-Analogous]

I think this is the current coverage map:

View attachment 374000

***

Directions 2017: BeiDou’s road to global service

December 6, 2016 - By Li Wang

An effective approach has been taken by the BeiDou Navigation Satellite System (BDS), and significant progress has been witnessed in 2016, from the aspects of launching new satellites, verifying new technologies, promoting applications and industrialization, strengthening international cooperation, and formulating fundamental policies.

Construction Update. In March 2016, a BDS satellite was launched into an inclined geo-synchronous orbit (IGSO); another geosynchronous orbit (GEO) satellite was launched in June. These became the 22nd and 23rd BDS satellites overall and further enhanced service capability. The BDS has been maintaining stable operation, and the performance of BDS Open Services has steadily improved. The availability and continuity surpass 99.9%, which can satisfy the nominal requirements of 95% and 99.5%.

The deployment of a BDS global constellation has progressed steadily. Five new-generation BDS satellites have been successfully launched so far, to verify advanced signal structure, crosslink, on-board clocks with higher accuracy, and other new technologies. Test results showed that the inter-system technical status is coordinated, the accuracy of orbit prediction was increased by 50%, and accuracy of time maintenance was upgraded by about 60% due to crosslink.

Meanwhile, the construction of augmentation systems is being accelerated. A nationwide reference station network has been built, and the construction of the basic system has been completed. System performance is under test, including meter and decimeter level for wide-area real-time services, centimeter level for areas within Beijing, and millimeter level for post-processing services.

As for satellite-based augmentation system (SBAS), BDS is actively participating in the design and international coordination activities for the next generation dual-frequency multiple-constellation (DFMC) SBAS standards. The 30th SBAS Interoperability Working Group (IWG) meeting was successfully held in China.

The document “Development of BDS and Applications of Multi-Frequency Multi-Constellation Navigation Satellite Systems” was submitted by the Civil Aviation Administration of China (CAAC) during the 39th meeting of International Civil Aviation Organization. This represents Chinese civil aviation authority’s official support of construction of BDSBAS. Development of applications of multi-frequency multi-constellation has been proposed to the international civil aviation community.

BDS Applications. With the enhancement of BDS service capability, its applications are also making remarkable progress, already producing a BDS industrial chain which comprises the basic products, application terminals, application systems and operational services.

BDS-based chips have been upgraded in quality and quantity. Great efforts are being made to carry out demonstrations of BDS industrial and regional applications. Mass market applications are flourishing. Chinese industrial production in the field of satellite navigation reached 190 billion renminbi yuan (US$28 billion) in 2015, of which BDS would contribute about 30%. So far, BDS-related products have already been exported to more than 70 countries, and applications and services are available in over 30 countries along the Silk Road Economic Belt and 21st-Century Maritime Silk Road (the Belt and Road) region.

International Cooperation Activities. BDS continuously carries out bilateral and multilateral exchanges and cooperation, in line with the principle that “BDS is developed by China, and dedicated to the world.”

To provide better services for global users, BDS carries out exchanges and coordination with the other navigation satellite systems in terms of compatibility and interoperability, monitoring and assessment, frequency resource, augmentation systems and other areas. It also strives to implement applications cooperation with countries in the Asia-Pacific region, members in the Association of South-East Asian Nations (ASEAN) and the League of Arab States (LAS), to bring more benefits to a wider range. On multilateral platforms, BDS continuously contributes to efforts and meetings of the International Committee on Global Navigation Satellite Systems (ICG) and the Committee on the Peaceful Uses of Outer Space (COPUOS). In addition to these international academic activities, China has also been organizing the China Satellite Navigation Conference for seven sessions.

Fundamental Policies. A whitepaper on BDS released in June 2016 interprets its development concepts and propositions, and is available on the official BDS website. The major content includes: to provide open services for global users free of charge; to continuously improve service performance and enhance the service quality; to promote compatible applications with other navigation satellite systems and to improve users’ benefits; to disseminate BDS information in a timely manner; to protect the radio-navigation satellite frequency spectrum according to law and to firmly reject harmful interference; to enhance BDS applications, industrial development and international application; to actively carry out international cooperation and exchanges, to participate in multilateral activities in the field of international satellite navigation and to promote the ratification of the BDS by international standards.

The “BeiDou Navigation Satellite System Signal In Space Interface Control Document” (Version 2.1) was published in November.

As for the standardization process, the “BeiDou Satellite Navigation Standard System” (Version 1.0) has been released, and BDS has been included in the Receiver Independent Exchange Format (RINEX, Version 3.03), approved by the Radio Technical Commission for Maritime Services Special Committee 104 on GNSS Service, RTCM SC-104.

Follow-up Deployment Plans. In 2017, three to four launches of BeiDou satellites will occur. BDS will provide basic services to the countries along the Belt and Road region by 2018, and possess global service capability by 2020.

BDS will keep improving its nationwide reference station network and steadily enhance its service performance. The dense reference stations for the nationwide frame network will be constructed by 2018, providing meter and decimeter level real-time location services for users in China, even centimeter level service in some areas.

BDS will carry out the design, validation and construction of SBAS in accordance with international civil aviation standards. The first GEO satellite of BDSBAS will be launched in around 2018. The satellite-based augmentation services covering China and surrounding regions will be provided from 2020, to provide CAT-I services to civil aviation users.

China will promote construction of a national comprehensive positioning, navigation and timing (PNT) system based on BDS, and strive to establish such a national PNT system with a united benchmark, no-gap coverage, security and effectiveness by 2030, as well as to upgrade capabilities to provide time and space information.

Summary. BDS will boost the deployment of a global constellation, continuously enhance performance, fulfill its service commitments, make all efforts to advance satellite navigation applications, promote the development of GNSS, and better serve the world and benefit mankind.

Thank you my Iron Brother

 

[cirr]

TK-1(new technology experimental satellite) to be launched by the KT-2A launch vehicle on 28.02.2017.

 

[Akasa]

TK-1(new technology experimental satellite) to be launched by the KT-2A launch vehicle on 28.02.2017.

Hadn't the KT-series been retired (or canceled)?

 

[onebyone]

https://twitter.com/x/status/830256322373382144

OMG

https://forum.nasaspaceflight.com/index.php?topic=34122.80

The first Yuanzheng-1 rocket stage, lost since it deployed Beidou-17 in Mar 2015, now tracked in 27018 x 157986 km x 41.2 deg orbit

 

[Daniel808]

https://twitter.com/x/status/830256322373382144

OMG

https://forum.nasaspaceflight.com/index.php?topic=34122.80

The first Yuanzheng-1 rocket stage, lost since it deployed Beidou-17 in Mar 2015, now tracked in 27018 x 157986 km x 41.2 deg orbit

What that's mean?

 

[egodoc222]

What that's mean?

Lost space junk....found and tracked!!
All the space trash is tracked...to protect the satellites in orbit!!

 

[onebyone]

China to launch night light observing satellite
China is set to launch its first remote-sensing satellite capable of detecting large lighted structures on the ground at night.

The satellite, to be launched this year, will be capable of detecting large lighted structures on the ground within its designated observation area. (Image for representation, Source: AP)

China is set to launch its first remote-sensing satellite capable of detecting large lighted structures on the ground at night.

The Luojia-1A, a 10-kilogramme mini satellite, is being developed by scientists at Wuhan University in Hubei province and will carry a highly sensitive night light camera with a 100-meter ground image resolution, Li Deren, chief scientist of the project was quoted as saying by state-run China News Service.

The satellite, to be launched this year, will be capable of detecting large lighted structures on the ground within its designated observation area, such as bridges over the Yangtze River, Li, a professor of remote-sensing surveys at the university and an academician of the Chinese Academy of Sciences, said.

He added that images taken by Luojia-1A will be clearer than those by US-developed satellites. Luojia-1A will be used to help economic planners and analysts with their research and to provide data to policymakers when they determine overseas trade measures, Li said.

Wuhan University is also working with China Aerospace Science and Industry Corp to design the Luojia-1B, a remote-sensing radar satellite, and plans to send it into orbit in 2019, the report said.

China plans to conduct a record number of 30 space launch missions this year as part of its efforts to expand its ambitious space programme. The record-breaking number space launches will be launched by Long March-5 and Long March-7 rockets, China Aerospace Science and Technology Corporation said earlier.

Also Read: China to build world’s brightest synchrotron light source facility

Last August China successfully launched the world’s first quantum satellite which boosts of hack proof ultra high security features to prevent wiretapping and intercepts.
http://indianexpress.com/article/te...unch-night-light-observing-satellite-4518845/

 

[lcloo]

What that's mean?

It means it is orbiting around the Earth at an orbit with nearest distance of 27,018KM and farthest desitance of 157, 986 KM at a tilt angle of 41.2 degree.

IMO, that is a great distance from Earth. If it is deployed as interceptor, is it possible to hit an enemy satellite positioned far away from Earth?

May be or may be not, that it was disguised as a failed satellite launch when it was actually for a satellite intercept test because normally a failed launched rockets/satellites would be near Earth orbit, and would fall back to the Earth.

 

[cirr]

 

[cirr]

【力星一号】(Lixing-1)在力学所科研人员与中科院兄弟单位的协同努力下，突破了一系列关键技术，实现了过渡流区22马赫的超高速长时间飞行，获取了该流区全球范围稀薄大气环境的原位测量数据，成功铸就了我国空间科学探索新的里程碑。

 

[Daniel808]

It means it is orbiting around the Earth at an orbit with nearest distance of 27,018KM and farthest desitance of 157, 986 KM at a tilt angle of 41.2 degree.

IMO, that is a great distance from Earth. If it is deployed as interceptor, is it possible to hit an enemy satellite positioned far away from Earth?

May be or may be not, that it was disguised as a failed satellite launch when it was actually for a satellite intercept test because normally a failed launched rockets/satellites would be near Earth orbit, and would fall back to the Earth.

Thanks so much for the Explanation
already make sense now.

 

[GS Zhou]

【力星一号】(Lixing-1)在力学所科研人员与中科院兄弟单位的协同努力下，突破了一系列关键技术，实现了过渡流区22马赫的超高速长时间飞行，获取了该流区全球范围稀薄大气环境的原位测量数据，成功铸就了我国空间科学探索新的里程碑。

the Institute of Mechanics of CAS (中科院力学所) is responsible for the aero-dynamics experiments for China's ultra-high speed space vehicles. Previously, I'm only aware of its progress regarding wind tunnel design and experiments. See the news below.

Now this news about Lixing-1 confirms that, in addition to the wind tunnel tests, the Institute of Mechanics also completed a real test for its ultra high speed vehicles. Fantastic!!!