Results 21 to 30 of about 4,258 (194)

Model‐based clustering reveals patterns in central place use of a marine top predator

Ecosphere, 2020
Satellite telemetry data are commonly used to quantify habitat selection, examine animal movements, and delineate home ranges. These data also contain valuable information concerning dens, nests, roosts, and other central places that are often associated
Brian M. Brost, Mevin B. Hooten, Robert J. Small   +2 more
doaj   +1 more source

Research on fault detection and principal component analysis for spacecraft feature extraction based on kernel methods

Open Astronomy, 2022
Satellite anomaly is a process of evolution. Detecting this evolution and the underlying feature changes is critical to satellite health prediction, fault early warning, and response.
Fu Na, Zhang Guanghua, Xia Keqiang, Qu Kun, Wu Guan, Han Minzhang, Duan Junru   +6 more
doaj   +1 more source

Validation and Evaluation of Ocean Calibration Accuracy of FY-3G Precipitation Measurement Radar

应用气象学报
FY-3G precipitation satellite launched in April 2023 is the first dedicated precipitation measurement satellite in China. The dual-frequency precipitation measurement radar (PMR) is the core instrument on the satellite.
Yuan Mei, Yin Honggang, Shang Jian, Jiang Baisen, Yang Runfeng, Gu Songyan, Zhang Peng   +6 more
doaj   +1 more source

A Novel Framework for Anomaly Detection for Satellite Momentum Wheel Based on Optimized SVM and Huffman-Multi-Scale Entropy

Entropy, 2021
The health status of the momentum wheel is vital for a satellite. Recently, research on anomaly detection for satellites has become more and more extensive. Previous research mostly required simulation models for key components.
Yuqing Li, Mingjia Lei, Pengpeng Liu, Rixin Wang, Minqiang Xu   +4 more
doaj   +1 more source

Station-Keeping Maneuvers for a Geostationary Satellite Using Linear Quadratic Regulator [PDF]

Journal of Astronomy and Space Sciences, 1997
This paper applied one of the well-known optimal control theory, namely, linear quadratic regulator(LQR), to the station-keeping maneuvers(SKM) for a geostationary satellite.
Sunik Lee, Kyu-Hong Choi, Sanguk Lee
doaj  

A Deep Learning Anomaly Detection Framework for Satellite Telemetry with Fake Anomalies

International Journal of Aerospace Engineering, 2022
Reducing satellite failures and keeping satellites healthy in orbit are important issues. Current satellite systems have developed modules to detect anomalies on board.
Yakun Wang, Jianglei Gong, Jie Zhang, Xiaodong Han   +3 more
doaj   +1 more source

EMG‐Driven Telemetry and Inference System for Fish: Pose Reconstruction and Flow Sensing

Advanced Intelligent Systems, EarlyView.
This work introduces an electromyography (EMG)‐driven telemetry framework that reconstructs body pose and infers hydrodynamic conditions in freely swimming fish. A custom 16‐channel archival system records intramuscular EMG, enabling deep‐learning models to decode joint kinematics, classify flow regimes, and reveal channel‐efficient sensing strategies.
Rahdar Hussain Afridi, Waqar Hussain Afridi, Muhammad Hamza, Ahsan Tanveer, Mingxin Wu, Xingwen Zheng, Liang Li, Guangming Xie   +7 more
wiley   +1 more source

Optimizing Strategies for Non‐Invasive Prospection of Settlements in the Intertidal Zone: A Case Study From the Centre of the Drowned Medieval Village of Tolsende (Scheldt Estuary, the Netherlands)

Archaeological Prospection, EarlyView.
ABSTRACT Medieval and early modern drowned villages in the intertidal zone of the Scheldt estuary (the Netherlands) constitute intriguing yet largely understudied components of north‐western Europe's underwater cultural heritage. Despite their high archaeological potential as time capsules of past settlement landscapes, research has remained limited ...
Jan Trachet, Sarah Bäumler, Stefan Krojer, Jeroen Verhegge, Wim De Clercq, Philippe De Smedt, Wouter H. Maes, Bente S. Majchczack, Immo Trinks, Dennis Wilken   +9 more
wiley   +1 more source

Hybrid Frequency–Temporal Modeling with Transformer for Long-Term Satellite Telemetry Prediction

Applied Sciences
Reliable forecasting of satellite telemetry is critical for spacecraft health management and mission planning. However, conventional data-driven methods often struggle to effectively capture both the long-term dependencies and local dynamics inherent in ...
Zhuqing Chen, Jiasen Yang, Zhongkang Yin, Yijia Wu, Lei Zhong, Qingyu Jia, Zhimin Chen   +6 more
doaj   +1 more source

Simulation of Tracking Process and Communication Link with Satellite [PDF]

فصلنامه علوم و فناوری فضایی, 2010
What is done in this paper is simulation of telemetry and telecommand communication between satellite and earth station as what exists in real earth station.
M. Nasirian, R. Saleh, R. Shojaee
doaj