Results 21 to 30 of about 19,599 (260)
BOC Signal Acquisition Algorithm Based on Similar Enfoldment
International Journal of Aerospace Engineering, 2020 A BOC signal has been widely used in the Global Navigation Satellite System (GNSS). Although the BOC signal has many advantages, the autocorrelation function (ACF) of the BOC signal has lots of peaks, which makes signal acquisition difficult.
Qi Han +5 more
doaj +1 more source
GNSS Interference Monitoring and Detection (GIMAD) System
Engineering Proceedings, 2023 In the last few years, gradually more systems have relied on the Global Navigation Satellite System (GNSS) for their correct functioning. These systems include safety-critical applications such as airports or emergency services.
Enric Obiols-Bernaus +5 more
doaj +1 more source
A Novel Perspective of the Kalman Filter from the Rényi Entropy
Entropy, 2020 Rényi entropy as a generalization of the Shannon entropy allows for different averaging of probabilities of a control parameter α. This paper gives a new perspective of the Kalman filter from the Rényi entropy.
Yarong Luo +3 more
doaj +1 more source
Chaotic transport of navigation satellites [PDF]
Chaos: An Interdisciplinary Journal of Nonlinear Science, 2019 Navigation satellites are known from numerical studies to reside in a dynamically sensitive environment, which may be of profound importance for their long-term sustainability. We derive the fundamental Hamiltonian of Global Navigation Satellite System dynamics and show analytically that near-circular trajectories lie in the neighborhood of a Normally ...
Ioannis Gkolias +4 more
openaire +3 more sources
End-Cloud Collaboration Navigation Planning Method for Unmanned Aerial Vehicles Used in Small Areas
Sensors, 2023 Unmanned aerial vehicle (UAV) collaboration has become the main means of indoor and outdoor regional search, railway patrol, and other tasks, and navigation planning is one of the key, albeit difficult, technologies.
Huajie Xiong +3 more
doaj +1 more source
Satellite Navigation for the Age of Autonomy [PDF]
2020 IEEE/ION Position, Location and Navigation Symposium (PLANS), 2020 11 pages, 8 figures, 2020 IEEE/ION Position, Location and Navigation Symposium (PLANS)
Tyler G. R. Reid +8 more
openaire +2 more sources
Velocity and Acceleration of NavIC Satellites using Broadcast Ephemeris [PDF]
International Journal of Mathematical, Engineering and Management Sciences, 2018 The current manuscript describes a methodology to derive velocity and acceleration of NavIC satellites from the broadcast ephemeris. A fourth-order central differencing formula is used to derive NavIC satellites’ Earth-Centred-Earth-Fixed (ECEF) velocity
Bidyut B. Gogoi +3 more
doaj +1 more source
Multi-Level Fusion Indoor Positioning Technology Considering Credible Evaluation Analysis
Remote Sensing, 2023 Aiming at the problems of the low robustness and poor reliability of a single positioning source in complex indoor environments, a multi-level fusion indoor positioning technology considering credible evaluation is proposed.
Lu Huang +5 more
doaj +1 more source
Adaptive Spoofing Suppression Algorithm for GNSS Based on Multiple Antennas Array
Sensors, 2020 The signals of navigation satellites are easily affected by spoofing interference, causing the wrong position, speed or Universal Time Coordinate of the receiver to be calculated.
Guangwei Fan +4 more
doaj +1 more source
An Innovative Fingerprint Location Algorithm for Indoor Positioning Based on Array Pseudolite
Sensors, 2019 Since the signals of the global navigation satellite system (GNSS) are blocked by buildings, accurate positioning cannot be achieved in an indoor environment.
Lu Huang +7 more
doaj +1 more source