Results 31 to 40 of about 63,188 (310)

High symbol-rate polarization interference cancelation for satellite-to-ground remote sensing data transmission system

EURASIP Journal on Wireless Communications and Networking, 2018
To remove the impacts of polarization interference on satellite-to-ground high-speed data transmission systems, the major factors that affect polarization interference are concluded, the deteriorations of bit error rate (BER) of different modulation ...
Zhisong Hao, Zhiming Zheng
doaj   +1 more source

Methodology to Enhance the Predictability of I/O Data Exchange Between Device and Tasks [PDF]

Journal of Astronomy and Space Sciences, 2007
Data coming from devices shall be transported to a specific task to be used in a software with the most accurate time and data integrity. During this process, a potential cause for invoking structured hazard and performance degradation is dormant.
Cheol-Hea Koo, Koon-Ho Yang, Seong-Bong Choi   +2 more
doaj   +1 more source

Optical High-Capacity Satellite Downlinks via High-Altitude Platform Relays

, 2007
Earth-observation (EO) satellite missions produce a large amount of data using high-resolution optical or radar sensors. During the last decades the amount of data has steadily increased due to improved sensor technologies with increased temporal ...
Florian Moll, Bischl, Hermann, Markus Knapek, Giggenbach, Dirk, Joachim Horwath, Horwath, Joachim, Courville, Nicolas, Knapek, Markus, Bernd Epple, Moll, Florian, Nicolas Courville, Hermann Bischl, Epple, Bernhard, Dirk Giggenbach   +13 more
core   +1 more source

Encrypted malicious traffic detection based on neural network

Dianzi Jishu Yingyong
With the widespread application of encrypted communications, traditional malicious traffic detection methods based on content analysis have gradually become ineffective.
Xia Longfei, Zhang Qihao, Wu Xianyun, Zhu Xuetian, Gu Xin, Tian Min   +5 more
doaj   +1 more source

A Study on Fuel Estimation Algorithms for a Geostationary Communication & Broadcasting Satellite [PDF]

Journal of Astronomy and Space Sciences, 2000
It has been developed to calculate fuel budget for a geostationary communication and broadcasting satellite. It is quite essential that the pre-launch fuel budget estimation must account for the deterministic transfer and drift orbit maneuver ...
Jong Won Eun
doaj  

On the Achievable Rates for the Return-Link of Multi-Beam Satellite Systems Using Successive Interference Cancellation

, 2011
This paper investigates the theoretically reachable rates in the return-link of multi-user multi-beam satellite systems. The return-link can actually be analyzed by means of multiple-input multiple-output signal processing techniques. While MIMO inspired
Michael Joham, Matteo Berioli, Rossetto, Francesco, Francesco Rossetto, Boussemart, Vincent, Berioli, Matteo, Joham, Michael, Vincent Boussemart   +7 more
core   +1 more source

Threat analysis and secure communication design for search and rescue satellite communication system

, 2023
The International COSPAS-SARSAT Programme is responsible for a global satellite-based search and rescue (SAR) distress alert detection and information distribution system, best known for detecting and locating emergency beacons activated by aircraft ...
Ur Rehman, S., Gardner Stephen, P., Rice, M., Nguyen, K.   +3 more
core   +1 more source

Wideband Cooperative Localization Through Generalized Cross-Correlation

IEEE Access
This work proposes a novel algorithm for robust cooperative localization using wideband time difference of arrival (TDoA) measurements and information coupling between nodes.
Andreas Fuchs, Lukas Wielandner, Klaus Witrisal   +2 more
doaj   +1 more source

Analysis of Raindrop Shapes and Scattering Calculations: The Outer Rain Bands of Tropical Depression Nate

Atmosphere, 2020
Tropical storm Nate, which was a powerful hurricane prior to landfall along the US Gulf coast, traversed north and weakened considerably to a tropical depression as it moved near an instrumented site in Hunstville, AL.
Merhala Thurai, Sophie Steger, Franz Teschl, Michael Schönhuber   +3 more
doaj   +1 more source

RTUAV-YOLO: A Family of Efficient and Lightweight Models for Real-Time Object Detection in UAV Aerial Imagery

Sensors
Real-time object detection in Unmanned Aerial Vehicle (UAV) imagery is critical yet challenging, requiring high accuracy amidst complex scenes with multi-scale and small objects, under stringent onboard computational constraints.
Ruizhi Zhang, Jinghua Hou, Le Li, Ke Zhang, Li Zhao, Shuo Gao   +5 more
doaj   +1 more source