Results 151 to 160 of about 172,120 (188)

Space debris: modeling and detectability

SPIE Proceedings, 2017
High precision orbit determination is required for the detection and removal of space debris. Knowledge of the distribution of debris objects in orbit is necessary for orbit determination by active or passive sensors. The results can be used to investigate the orbits on which objects of a certain size at a certain frequency can be found.
C. Wiedemann, J. Lorenz, J. Radtke, C. Kebschull, A. Horstmann, E. Stoll   +5 more
openaire   +1 more source

Space debris detection in optical image sequences

Applied Optics, 2016
We present a high-accuracy, low false-alarm rate, and low computational-cost methodology for removing stars and noise and detecting space debris with low signal-to-noise ratio (SNR) in optical image sequences. First, time-index filtering and bright star intensity enhancement are implemented to remove stars and noise effectively.
Xi, Jiangbo, Wen, Desheng, Ersoy, Okan K., Yi, Hongwei, Yao, Dalei, Song, Zongxi, Xi, Shaobo, Xi, Jiangbo (xi15@purdue.edu)   +7 more
openaire   +3 more sources

Simulation System for Space Debris Intelligent Detecting

2021
Space debris has become a major potential safety hazard to the on-orbit spacecraft, which must be considered when launching a spacecraft. A simulation verification system which ground-based and can simulate the debris detecting onboard was established. The system consists of three sub-systems.
Feng Shi, Yuee Chang, Donglei He, Kunpeng Wang, Huaifeng Li   +4 more
openaire   +1 more source

Space-borne radar detection of orbital debris

Proceedings of GLOBECOM '93. IEEE Global Telecommunications Conference, 2002
Orbital debris in low-Earth-orbit (LEG) poses an increasing threat to the Space Station Freedom (SSF). A combined ground-based/on-orbit radar detection system can provide adequate warning to minimize the collision threat. The paper discusses the unique features on an on-board radar, its contributions to solving the problem, simulation results from ...
J.R. Carl, G.D. Arndt, B.A. Bourgoise, I. Paz   +3 more
openaire   +1 more source

Space debris detection with fast grid-based learning

2020 IEEE 3rd International Conference of Safe Production and Informatization (IICSPI), 2020
Fast space debris detection is valuable to space safety and space vehicle operation. In this paper, we proposed a fast space debris detection method with grid-based learning. The image divided into 14×14 grids, and then the fast grid-based neural network (FGBNN) is used to locate the position of the space debris in the grids. The experiments show that,
Yaobing Xiang, Jiangbo Xi, Ming Cong, Yun Yang, Chaofeng Ren, Ling Han   +5 more
openaire   +1 more source

Space Debris Detection and Analysis

1994
Abstract : A 40 cm telescope with an intensified CCD detector and video recording was used to detect space-debris objects. Participation in the ODERACS experiment showed that objects as small as 5 cm could be detected with this size telescope. Image analysis techniques were tested to enhance the low S/N debris streaks in the recorded video signals, and
Ronald Siewert, Robert H. Eather
openaire   +1 more source

Analysis of Defocus in Space Based Space Optical Debris Detection

ACTA PHOTONICA SINICA, 2016
the reasons of the generation of defocus were discussed and the defocus change was analysed from the relative distance, atmospheric pressure and temperature change. the modulation transfer function model was proposed to study the image quality influenced by defocus. then different defocus value leading image blurry was simulated. the simulation results
曾德贤 ZENG De-xian, 胡炳梁 HU Bing-liang, 宋海军 SONG Hai-jun   +2 more
openaire   +1 more source

Coherent Integration Detection Algorithm Research of Space Debris

2006 CIE International Conference on Radar, 2006
In this paper, the problem of coherent integrative detection of high velocity moving target-space debris by a space-based chirp radar is investigated. It is pointed out that during coherent integrative detection the space debris target returns may migrate in radar resolution cells.
Fengsen Deng, Xuegang Wang
openaire   +1 more source

Space debris detection using Laser Communications Demonstration Equipment

2000 IEEE Aerospace Conference. Proceedings (Cat. No.00TH8484), 2002
In order to know the potential hazard of the space debris around the orbit of the International Space Station (ISS) and to develop the technology to detect small-sized space debris (1-1.0 cm), an observation experiment is currently planned to detect space debris around the ISS.
Y. Arimoto, J. Uchida, A. Semerok
openaire   +1 more source

The application of lidar in detecting space debris

SPIE Proceedings, 2008
The accumulation of space debris is expected to present an increasing threat to orbital aerostat. To develop and use space resource continually and in security the detecting technology for space debris has to be improved. The paper firstly introduces the concept of space debris and their common detection means, and then introduces the application of
Yang Wang, Qianqian Wang
openaire   +1 more source