Results 101 to 110 of about 843 (194)

Robust GNSS/INS hybrid integration based on multi-state validation of GNSS measurements

Frontiers in Physics
The Global Navigation Satellite System (GNSS) is generally combined with the Inertial Navigation System (INS) to deliver reliable and high-performance navigation, particularly in scenarios where GNSS signals may be compromised. This integration leverages
Shan Wang, Haotang Huang, Fangzhou Tang, Bocheng Zhu   +3 more
doaj   +1 more source

Interference Mitigation of Replay Attacks in GPS Receiver using of Finite Impulse Response Filter

Iranian Journal of Electrical and Electronic Engineering, 2017
The vulnerability of civil GPS receiver to interference may be intentional or unintentional. Among all types of interference, replay attack intended as the most dangerous intentional one.
Z. Shokhmzan, M. R. Mosavi, M. Moazedi
doaj  

Analysis of BDS Coverage Performance in the Arctic and High-Latitude Regions and Methods for Optimization

Applied Sciences
The Arctic region holds immense strategic value in terms of scientific expedition, maritime transportation, and resource development, which makes reliable and secure satellite navigation services in this area crucial.
Tianqiao Zhang, Junyi Xu, Yunxiang Xu, Weinan Zhang   +3 more
doaj   +1 more source

Computationally Efficient Non-linear Kalman Filters for On-board Space Vehicle Navigation

, 2017
The Extended Kalman Filter (EKF) is the most popular non-linear estimation algorithm due to its computational efficiency. It is frequently used in on-board space vehicle navigation.
Biswas, Sanat
core   +1 more source

Contribution of Unesp on broadcast ephemeris and PDOP monitoring for GNSS in the IGMA - Trial Project

, 2020
A modernização do GNSS (Global Navigation Satellite System) com a inclusão de novas constelações e melhorias nos sistemas já disponíveis foi avaliada com grande interesse na última década. A combinação de diferentes constelações de satélite expande as aplicações possíveis; portanto, o termo multi-GNSS apareceu para designar o uso desses múltiplos ...
openaire   +1 more source

Геометрический фактор созвездий геостационарных спутников [PDF]

, 2015
Рассматривается модель для расчета геометрических факторов созвездий гео- стационарных спутников из состава SBAS. Приводятся результаты моделиро- вания PDOP, HDOP, VDOP по данным альманаха для различных регионов.
Конин Валерий, Konin Valeriy
core  

KAJIAN PENGARUH JUMLAH SATELIT SISTEM GNSS DALAM KETELITIAN PENENTUAN POSISI UNTUK PENGUKURAN BIDANG DENGAN METODE RTK

, 2018
Pada saat ini metode penentuan posisi dengan menggunakan sinyal satelit semakin berkembang pesat dengan hadirnya satelit-satelit baru dalam sistem satelit GNSS (Globas Navigation Satelit System).
Satriyo, Pradipa Boby
core  

Tumor-Targeting T₁ MRI Contrast Agents with Antioxidant Effects: Gadolinium Oxide Nanoparticles Grafted with Polydopamine- and Polyserotonin-Conjugated Polyacrylic Acids. [PDF]

ACS Omega
Liu Y, Tegafaw T, Baek A, Ho SL, Zhao D, Chen X, Mulugeta E, Lee H, Nam H, Kim J, Chang Y, Lee GH.   +11 more
europepmc   +1 more source

Analisa Perbandingan Satelit GPS dan Kombinasi Satelit GPS dengan GNSS lainnya di Indonesia

, 2019
Navigasi dapat memanfaatkan satu atau lebih konstelasi satelit. Penelitian ini bertujuan untuk menganalisa perbandingan presisi posisi seseorang yang diambil dari satelit GPS dan kombinasi satelit GPS, satelit GLONASS, dan satelit BeiDou.
Boentoro, Nico
core  

Global Positioning System Network Reference Control Optimization Using Dilution of Precision Variances in Gidan Kwano Area, Minna, Nigeria

, 2014
The precision of Global Positioning System (GPS) observables depends on the satellite geometry, represented by the Dilution of Precision (DOP) values, and range of errors caused by signal strength, ionospheric delay, tropospheric delay, and satellite ...
Bayrak, Temel, Lazarus, M. Ojigi, Etim, E. Eyo   +2 more
core