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An online error calibration method for spaceflight TT&C systems based on LEO-ground DDGPS Research Papers

Qiao WANG, Xiao-jun JIN, Wei ZHANG, Shi-ming MO, Zhao-bin XU, Zhong-he JIN

Frontiers of Information Technology & Electronic Engineering 2019, Volume 20, Issue 6,   Pages 829-841 doi: 10.1631/FITEE.1800308

Abstract: spaceflight telemetry, tracking and command (TT&C) systems, an online error calibration method based on lowEarth orbit satellite-to-ground doubledifferential GPS (LEO-ground DDGPS) is proposed in this study.with a pair of forward and backward adaptive robust Kalman filters (ARKFs) is adopted to solve the LEO-ground

Keywords： Spaceflight     low Earth orbit (LEO)     Filter     Optimization     Calibration    

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Satellite Internet of Things: challenges, solutions, and development trends Review

Xiaoming CHEN, Zhaobin XU, Lin SHANG,chen_xiaoming@zju.edu.cn,zjuxzb@zju.edu.cn,shangl@microsate.com

Frontiers of Information Technology & Electronic Engineering 2023, Volume 24, Issue 7,   Pages 935-944 doi: 10.1631/FITEE.2200648

Abstract: ., , wide coverage, high mobility, low power, and stringent delay, are analyzed in detail.

Keywords： Internet of Things     Satellite communications     Low Earth orbit (LEO)     Massive connectivity     Random access    

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Low Earth Orbiter (LEO) Navigation Augmentation: Opportunities and Challenges

Wang Lei, Li Deren, Chen Ruizhi, Fu Wenju, Shen Xin, Jiang Hao

Strategic Study of CAE 2020, Volume 22, Issue 2,   Pages 144-152 doi: 10.15302/J-SSCAE-2020.02.018

Abstract: ’s Beidou satellite navigation system (Beidou system) achieves a primary global coverage, the lowearth orbiter navigation augmentation (LEO-NA) technique becomes a hot research topic, since it canThis paper analyzed the demand for and status of the LEO-NA technique, and focused on the in-orbit validationIt also studied the challenges faced by the LEO-NA system, including interoperability of signal frequenciesenhancing the top-level design of the LEO-NA system while focusing on the synergy of the LEO-NA and

Keywords： satellite navigation augmentation     low earth orbiter constellation     Beidou system     collaborative development    

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China - Brazil Earth Resources Satellite

Chen Yiyuan

Strategic Study of CAE 2001, Volume 3, Issue 3,   Pages 9-15

Abstract:

This paper introduces the general situation of China-Brazil Earth Resources Satellite (CBERS), whichThe payload of some instruments, the service module, and the in orbit testing performance are described

Keywords： China-Brazil Earth Resources Satellite     payload     service module     in orbit test    

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Response to Risk of Near-Earth Asteroid Impact

Wu Weiren, Gong Zizheng, Tang Yuhua, Zhang Pinliang

Strategic Study of CAE 2022, Volume 24, Issue 2,   Pages 140-151 doi: 10.15302/J-SSCAE-2022.02.015

Abstract:

 Near-Earth asteroid (NEA) impacts on the Earth have caused overIn this paper, the hazards and risks of NEA impact on the Earth are described, and the significance ofanalyzed, involving response procedures, monitoring and early warning, impact hazard assessment, and on-orbitproposed, and the key tasks are summarized and discussed involving monitoring and early warning, on-orbit

Keywords： near-Earth asteroid     impact hazards     impact risk response     monitoring and early warning     on-orbit disposal    

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Regeneration of vernacular architecture: new rammed earth houses on the upper reaches of the Yangtze

Jiaping LIU, Rongrong HU, Liu YANG, Runshan WANG,

Frontiers in Energy 2010, Volume 4, Issue 1,   Pages 93-99 doi: 10.1007/s11708-010-0002-4

Abstract: In rural areas of western China, most of the vernacular architectures are made of earth.earth house cannot meet their requirement for higher standard of living.As a result, much more energy will be consumed if industrial building materials are used instead of earthThis paper briefly describes a project about creating a new prototype of earth house for the migrantshouses with the concept of low-energy housing.

Keywords： earth house     low-energy housing     upper reaches of the Yangtze River     passive solar technique    

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Precise Orbit Determination for the FY-3C Satellite Using Onboard BDS and GPS Observations from 2013, Article

Xingxing Li , Keke Zhang, Xiangguang Meng, Wei Zhang, Qian Zhang, Xiaohong Zhang, Xin Li

Engineering 2020, Volume 6, Issue 8,   Pages 904-912 doi: 10.1016/j.eng.2019.09.001

Abstract: determination (POD) for a low-Earth orbit (LEO).the GC combined POD presents a significant accuracy improvement after the exclusion of geostationary Earthorbit (GEO) satellites.GC combined POD can significantly improve the reliability of LEO POD, simply due to system redundancyAn increased contribution of BDS to LEO POD can be expected with the launch of more BDS satellites and

Keywords： Fengyun-3C     LEO precise orbit determination     Onboard BDS and GPS     BDS code bias     BDS/GPS combined POD    

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The Polar Orbit Meteorological Satellite in China

Meng Zhizhong

Strategic Study of CAE 2004, Volume 6, Issue 10,   Pages 1-5

Abstract: The development of polar orbit meteorological satellite in China has experienced the processes from experiment

Keywords： polar orbit meteorological satellite     FY-1 satellite     FY-3 satellite    

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Effect of earth reinforcement, soil properties and wall properties on bridge MSE walls

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 5,   Pages 1209-1221 doi: 10.1007/s11709-021-0764-2

Abstract: Mechanically stabilized earth (MSE) retaining walls are popular for highway bridge structures.They have precast concrete panels attached to earth reinforcement.The effects of pore pressure, soil cohesion, earth reinforcement type and length, breakage/slippage of

Keywords： mechanically stabilized earth walls     precast concrete panels     backfill soil     finite element modeling     earth reinforcement    

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Temperature Prediction for Sun Synchronous Satellite on Orbit

Wei Chuanfeng,Li Yunze,Yuan Lingshuang,Wang Jun,Ning Xianwen

Strategic Study of CAE 2005, Volume 7, Issue 2,   Pages 73-75

Abstract:

Temperature prediction on-line for sun synchronous satellite is very essential. In this paper, satellite's temperature is predicted on-line after the analysis to the cycles of orbital external thermal current and average temperature. Temperature distribution predicted by last two circles can be the basis on thermal fault diagnosis for satellites. Meanwhile the error accumulation can be avoided. Fly experiment data show that the method is reliable.

Keywords： sun synchronous satellite     on orbit     temperature predict    

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Numerical analysis of nonlinear dynamic behavior of earth dams

Babak EBRAHIMIAN

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 1,   Pages 24-40 doi: 10.1007/s11709-010-0082-6

Abstract: A numerical study is conducted to investigate the dynamic behavior of earth dams.For the latter, the Long Valley (LV) earth dam subjected to the 1980 Mammoth Lake earthquake as a realsoil behavior, strength of the shell materials and dam reservoir condition on the dynamic response of earth

Keywords： earth dam     numerical     nonlinear response     dynamic analysis     earthquake     dam height    

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Simulation and Evaluation of Real-Time and Intelligent Space-Based Information Service System of China

Jiang Hao, Li Deren, Shen Xin, Wu Jing

Strategic Study of CAE 2020, Volume 22, Issue 2,   Pages 153-160 doi: 10.15302/J-SSCAE-2020.02.019

Abstract: the distributed simulation and evaluation system, the transmission support capabilities of different low-orbit

Keywords： space-based information     real-time services     simulation     evaluation     low-orbit communication satellite system    

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Deviation correction strategy for the earth pressure balance shield based on shield–soil interactions

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 2, doi: 10.1007/s11465-022-0676-4

Abstract: decision-making approach for the deviation correction trajectory and posture rectification load for an earth

Keywords： additional position change     deviation correction trajectory     earth pressure balance shield     mechanical    

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Soil spatial variability impact on the behavior of a reinforced earth wall

Adam HAMROUNI, Daniel DIAS, Badreddine SBARTAI

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 2,   Pages 518-531 doi: 10.1007/s11709-020-0611-x

Abstract: This article presents the soil spatial variability effect on the performance of a reinforced earth wall

Keywords： reinforced earth wall     geosynthetic     random field     spatial variability     Monte Carlo simulation    

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Upper bound solution to seismic active earth pressure of submerged backfill subjected to partial drainage

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 6,   Pages 1480-1493 doi: 10.1007/s11709-021-0776-y

Abstract: This paper proposes a general analytical method to evaluate the seismic active earth pressure on a retainingthe following steps: i) determination of the total head, ii) upper bound solution of seismic active earththrust, and iii) deduction for the earth pressure distribution.>x,z) relies on the Fourier series expansions, and the expressions of the seismic active earthstudies reveal that insufficient drainage and earthquakes are crucial factors that cause unfavorable earth

Keywords： seismic active earth pressure     partial seepage flow     pore pressure     anisotropy     upper bound theorem    

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Title Author Date Type Operation

An online error calibration method for spaceflight TT&C systems based on LEO-ground DDGPS

Qiao WANG, Xiao-jun JIN, Wei ZHANG, Shi-ming MO, Zhao-bin XU, Zhong-he JIN

Journal Article

Satellite Internet of Things: challenges, solutions, and development trends

Xiaoming CHEN, Zhaobin XU, Lin SHANG,chen_xiaoming@zju.edu.cn,zjuxzb@zju.edu.cn,shangl@microsate.com

Journal Article

Low Earth Orbiter (LEO) Navigation Augmentation: Opportunities and Challenges

Wang Lei, Li Deren, Chen Ruizhi, Fu Wenju, Shen Xin, Jiang Hao

Journal Article

China - Brazil Earth Resources Satellite

Chen Yiyuan

Journal Article

Response to Risk of Near-Earth Asteroid Impact

Wu Weiren, Gong Zizheng, Tang Yuhua, Zhang Pinliang

Journal Article

Regeneration of vernacular architecture: new rammed earth houses on the upper reaches of the Yangtze

Jiaping LIU, Rongrong HU, Liu YANG, Runshan WANG,

Journal Article

Precise Orbit Determination for the FY-3C Satellite Using Onboard BDS and GPS Observations from 2013,

Xingxing Li , Keke Zhang, Xiangguang Meng, Wei Zhang, Qian Zhang, Xiaohong Zhang, Xin Li

Journal Article

The Polar Orbit Meteorological Satellite in China

Meng Zhizhong

Journal Article

Effect of earth reinforcement, soil properties and wall properties on bridge MSE walls

Journal Article

Temperature Prediction for Sun Synchronous Satellite on Orbit

Wei Chuanfeng,Li Yunze,Yuan Lingshuang,Wang Jun,Ning Xianwen

Journal Article

Numerical analysis of nonlinear dynamic behavior of earth dams

Babak EBRAHIMIAN

Journal Article

Simulation and Evaluation of Real-Time and Intelligent Space-Based Information Service System of China

Jiang Hao, Li Deren, Shen Xin, Wu Jing

Journal Article

Deviation correction strategy for the earth pressure balance shield based on shield–soil interactions

Journal Article

Soil spatial variability impact on the behavior of a reinforced earth wall

Adam HAMROUNI, Daniel DIAS, Badreddine SBARTAI

Journal Article

Upper bound solution to seismic active earth pressure of submerged backfill subjected to partial drainage

Journal Article