Results 31 to 40 of about 1,219,894 (381)
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
Electron density retrieval from truncated Radio Occultation GNSS data [PDF]
, 2019 This paper summarizes the definition and validation of two complementary new strategies, to invert incomplete Global Navigation Satellite System Radio-Occultation (RO) ionospheric measurements, such as the ones to be provided by the future EUMETSAT Polar
Cardellach Galí, Estel +3 more
core +2 more sources
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
Basic performance and future developments of BeiDou global navigation satellite system
, 2020 The core performance elements of global navigation satellite system include availability, continuity, integrity and accuracy, all of which are particularly important for the developing BeiDou global navigation satellite system (BDS-3).
Yuanxi Yang, Yue Mao, Bijiao Sun
semanticscholar +1 more source
Sensors, 2020 In urban canyon environments, Global Navigation Satellite System (GNSS) satellites are heavily obstructed with frequent rise and fall and severe multi-path errors induced by signal reflection, making it difficult to acquire precise, continuous, and ...
Chuanzhen Sheng +3 more
doaj +1 more source
Accurate and automatic NOAA-AVHRR image navigation using a global contour matching approach [PDF]
, 2000 The problem of precise and automatic AVHRR image navigation is tractable in theory, but has proved to be somewhat difficult in practice. The authors' work has been motivated by the need for a fully automatic and operational navigation system capable of ...
Eugenio, F +4 more
core +1 more source
Sensors, 2020 The autocorrelation function (ACF) of the Binary Offset Carrier modulation (BOC) signal for Global Navigation Satellite System (GNSS) has multiple peaks, ambiguity is easily generated during the synchronization of the baseband signal.
Fang Hao +6 more
doaj +1 more source
Demand and key technology for a LEO constellation as augmentation of satellite navigation systems
Satellite NavigationA Low Earth Orbit (LEO) constellation augmenting satellite navigation is important in the future development of Global Navigation Satellite System (GNSS).
Yuanxi Yang +4 more
semanticscholar +1 more source
Doppler Differential Positioning Technology Using the BDS/GPS Indoor Array Pseudolite System
Sensors, 2019 A Global Satellite Navigation System (GNSS) cannot provide normal location services in an indoor environment because the signals are blocked by buildings.
Xingli Gan +7 more
doaj +1 more source