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The Drag-Free and Attitude Control System is a central element of LISA technology, ensuring the very high dynamic stability of spacecraft and test masses required in order to reach the sensitivity that gravitational wave astronomy in space…

广义相对论与量子宇宙学 · 物理学 2022-08-18 Henri Inchauspé , Martin Hewitson , Orion Sauter , Peter Wass

As spacecraft send back increasing amounts of telemetry data, improved anomaly detection systems are needed to lessen the monitoring burden placed on operations engineers and reduce operational risk. Current spacecraft monitoring systems…

机器学习 · 计算机科学 2018-06-08 Kyle Hundman , Valentino Constantinou , Christopher Laporte , Ian Colwell , Tom Soderstrom

Gait recognition is one of the most promising video-based biometric technologies. The edge of silhouettes and motion are the most informative feature and previous studies have explored them separately and achieved notable results. However,…

计算机视觉与模式识别 · 计算机科学 2024-02-22 Yan Sun , Hu Long , Xueling Feng , Mark Nixon

Orbit determination of spacecraft in orbit has been mostly dependent on either GNSS satellite signals or ground station telemetry. Both methods present their limitations, however: GNSS signals can only be used effectively in earth orbit,…

系统与控制 · 电气工程与系统科学 2022-09-13 Pedro Rocha Cachim , João Gomes , Rodrigo Ventura

This paper presents the development of an in situ measurement system known as the Debris Resistive Acoustic Grid Orbital Navy/NASA Sensor (DRAGONS). The DRAGONS system is designed to detect impacts caused by particles ranging from 50…

系统与控制 · 计算机科学 2017-01-03 Michael A. Tsao , Hau T. Ngo , Robert D. Corsaro , Christopher R. Anderson

SHARDS (Survey for High-z Absorption Red & Dead Sources) is an unbiased ultra-deep spectro-photometric survey with GTC@OSIRIS aimed at selecting and studying massive passively evolving galaxies at z=1.0-2.3 using a set of 24 medium-band…

宇宙学与河外天体物理 · 物理学 2012-01-12 Antonio Cava , Pablo G. Pérez González , the SHARDS Team

We present a new space mission concept that is capable of finding, detecting, and tracking 90% of near-Earth objects (NEO) with H magnitude of $\rm H\leq22$ (i.e., $\sim$140 m in size) that are potentially hazardous to the Earth. The new…

天体物理仪器与方法 · 物理学 2017-07-24 Michael Shao , Slava G. Turyshev , Sara Spangelo , Thomas Werne , Chengxing Zhai

Precision space inertial sensors are imperative to Earth geodesy missions, gravitational wave observations and several fundamental physics experiments in space. In these missions, the residual acceleration noise of the test mass(TM) caused…

空间物理 · 物理学 2024-07-11 Fangchao Yang , Yan Zhu , Xiaofei Jin , Yujie Zhao , Shixun Pei , Wei Hong

A novel wireless transmission scheme, as named the reconfigurable intelligent surface (RIS)-assisted received adaptive spatial modulation (RASM) scheme, is proposed in this paper. In this scheme, the adaptive spatial modulation (ASM)-based…

信息论 · 计算机科学 2025-02-26 Chaorong Zhang , Hui Xu , Benjamin K. Ng , Chan-Tong Lam , Ke Wang

Long-term spectroscopic monitoring campaigns on active galactic nuclei (AGNs) provide a wealth of information about its interior structure and kinematics. However, a number of the observations suffer from the contamination of second-order…

星系天体物理 · 物理学 2024-01-23 Wen-Zhe Xi , Kai-Xing Lu , Hai-Cheng Feng , Sha-Sha Li , Jin-Ming Bai , Rui-Lei Zhou , Hong-Tao Liu , Jian-Guo Wang

We developed the X-ray, Gamma-ray and Relativistic Electron detector (XGRE) onboard the TARANIS satellite, to investigate high-energy phenomena associated with lightning discharges such as terrestrial gamma-ray flashes and terrestrial…

Despite numerous successful missions to small celestial bodies, the gravity field of such targets has been poorly characterized so far. Gravity estimates can be used to infer the internal structure and composition of small bodies and, as…

天体物理仪器与方法 · 物理学 2022-02-15 Jacopo Villa , Andrew French , Jay McMahon , Daniel Scheeres , Benjamin Hockman

Transit photometry is currently the most efficient and sensitive method for detecting extrasolar planets (exoplanets) and a large majority of confirmed exoplanets have been detected with this method. The substantial success of space-based…

地球与行星天体物理 · 物理学 2024-04-09 Hossein Fatheddin , Sedighe Sajadian

Small Angle-X-ray Scattering Tensor Tomography (SAS-TT) is a relatively new, but powerful technique for studying the multiscale architecture of hierarchical structures, which is of particular interest for life science applications.…

We describe a new space gravitational wave observatory design called LAGRANGE that maintains all important LISA science at about half the cost and with reduced technical risk. It consists of three drag-free spacecraft in the most stable…

The Compressed Baryonic Matter (CBM) experiment at the future Facility for Antiproton and Ion Research (FAIR) is a heavy-ion experiment designed to study nuclear matter at the highest baryonic density. For high-statistics measurements of…

仪器与探测器 · 物理学 2025-05-28 The CBM Collaboration

The Taiji mission, a pioneering Chinese space-borne gravitational wave observatory, requires ultra-precise calibration of its gravitational reference sensors (GRSs) to achieve its targeted sensitivity of $3\times10^{-15} \mathrm{\ m\…

天体物理仪器与方法 · 物理学 2026-04-20 Haoyue Zhang , Chang Liu , Xiaotong Wei , Peng Xu , Li-E Qiang , Ziren Luo , Ye Dong

The Transiting Exoplanet Survey Satellite (TESS) will embark in 2018 on a 2-year wide-field survey mission, discovering over a thousand terrestrial, super-Earth and sub-Neptune-sized exoplanets potentially suitable for follow-up…

地球与行星天体物理 · 物理学 2018-02-28 Dana R. Louie , Drake Deming , Loic Albert , L. G. Bouma , Jacob Bean , Mercedes Lopez-Morales

We are entering a new era for high energy astrophysics with the use of new technology to increase our ability to both survey and monitor the sky. The Soft X-ray Imager (SXI) instrument on the THESEUS mission will revolutionize transient…