Results 21 to 30 of about 1,198,194 (418)
Geo-spatial Information Science, 2022 With the development of the Low Earth Orbit (LEO) communication constellations, it has become a hot area of research to provide additional navigation augmentation services.
Ziqian Wu +5 more
doaj +1 more source
The space–time references of BeiDou Navigation Satellite System
Satellite Navigation, 2021 The BeiDou Navigation Satellite System (BDS) is essentially a precise time measurement and time synchronization system for a large-scale space near the Earth.
Chunhao Han +3 more
doaj +1 more source
The Potential of LEO Satellite-Based Opportunistic Navigation for High Dynamic Applications
Italian National Conference on Sensors, 2022 Resilient navigation in Global Navigation Satellite System (GNSS)-degraded and -denied environments is becoming more and more required for many applications. It can typically be based on multi-sensor data fusion that relies on alternative technologies to
N. Jardak, Quentin Jault
semanticscholar +1 more source
Satellite Navigation, 2020 The BeiDou system (BDS) plays a significant role in people’s lives, but its security is easily affected by spoofing attacks. The radio determination satellite service (RDSS) is a special service of BDS that provides two-way communication, positioning ...
Fei Wang +4 more
doaj +1 more source
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
Data-Driven Meets Navigation: Concepts, Models, and Experimental Validation [PDF]
, 2022 The purpose of navigation is to determine the position, velocity, and orientation of manned and autonomous platforms, humans, and animals. Obtaining accurate navigation commonly requires fusion between several sensors, such as inertial sensors and global navigation satellite systems, in a model-based, nonlinear estimation framework.
arxiv +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
Navigation Grade MEMS IMU for A Satellite [PDF]
Micromachines, 2021 This paper presents a navigation grade micro-electromechanical system (MEMS) inertial measurement unit (IMU) that was successfully applied for the first time in the Lobster-Eye X-ray Satellite in July 2020. A six-axis MEMS gyroscope redundant configuration is adopted in the unit to improve the performance through mutual calibration of a set of two-axis
Zhao, Wanliang +6 more
openaire +3 more sources
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
Ground Truth Generation Algorithm for Medium-Frequency R-Mode Skywave Detection [PDF]
, 2023 With the advancement of transportation vehicles, the importance and utility of navigation systems providing positioning, navigation, and timing (PNT) information have been increasing. Global navigation satellite systems (GNSS) are widely used navigation systems, but they are vulnerable to radio frequency interference (RFI), resulting in disruptions of ...
arxiv +1 more source