Results 21 to 30 of about 62,456 (245)

Ship Security Relative Integrated Navigation with Injected Fault Measurement Attack and Unknown Statistical Property Noises

open access: yesJournal of Marine Science and Engineering, 2020
In this work, the ship relative integrated navigation approaches are studied for the navigation scenarios with the measurements disturbed by unknown statistical property noises and with the injected fault measurement attacks.
Yongjing Wang, Yi Wang, Xiaoliang Feng
doaj   +1 more source

Relative navigation approach for vision-based aerial GPS-denied navigation

open access: yes2013 International Conference on Unmanned Aircraft Systems (ICUAS), 2013
GPS-denied aerial flight is a popular research topic. The problem is challenging and requires knowledge of complex elements from many distinct disciplines. Additionally, aerial vehicles can present challenging constraints such as stringent payload limitations and fast vehicle dynamics. In this paper we propose a new architecture to simplify some of the
Robert C. Leishman   +2 more
openaire   +2 more sources

High-Precision Collaborative Relative Navigation Method for Multiple Aircraft Based on Geometric Topology Constraints [PDF]

open access: yesHangkong bingqi
Multiple aircraft formation has strong multi operation capability, high reliability and high overall efficiency, which is an important direction for the future development of aviation field.
Lu Kewen, Wang Xinlong, Wang Bin
doaj   +1 more source

Uncooperative Spacecraft Relative Navigation With LIDAR-Based Unscented Kalman Filter

open access: yesIEEE Access, 2019
Autonomous relative navigation is a critical functionality which needs to be developed to enable safe maneuvers of a servicing spacecraft (chaser) in close-proximity with respect to an uncooperative space target, in the frame of future On-Orbit Servicing
Roberto Opromolla, Alessia Nocerino
doaj   +1 more source

A Comparative Analysis of Multi-Epoch Double-Differenced Pseudorange Observation and Other Dual-Satellite Lunar Global Navigation Systems

open access: yesAerospace, 2021
In this study, dual-satellite lunar global navigation systems that consist of a constellation of two navigation satellites providing geo-spatial positioning on the lunar surface were compared.
Toshiki Tanaka   +3 more
doaj   +1 more source

Quantum-Based Relative Inertial Navigation with Velocity-Aided Alignment and Initialization

open access: yesEngineering Proceedings, 2023
Quantum sensors are expected to offer significant advantages in magnetic- and gravity-aided navigation. However, these techniques depend on the local environmental conditions and require an alternative solution to ensure high position accuracy on shorter
Pieter Simke de Vries   +2 more
doaj   +1 more source

Cooperative relative navigation for multi‐UAV systems by exploiting GNSS and peer‐to‐peer ranging measurements

open access: yesIET Radar, Sonar & Navigation, 2021
Multiple unmanned aerial vehicle (UAV) systems have attracted extensive research interest for their potential benefits of scalability and flexibility. To keep all the UAVs in the desired formation, the navigation system must continuously provide highly ...
Jiawen Shen   +3 more
doaj   +1 more source

Spatiotemporal and quantitative analyses of phosphoinositides – fluorescent probe—and mass spectrometry‐based approaches

open access: yesFEBS Letters, EarlyView.
Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho   +3 more
wiley   +1 more source

Inhibiting stearoyl‐CoA desaturase suppresses bone metastatic prostate cancer by modulating cellular stress, mTOR signaling, and DNA damage response

open access: yesFEBS Letters, EarlyView.
Bone metastasis in prostate cancer (PCa) patients is a clinical hurdle due to the poor understanding of the supportive bone microenvironment. Here, we identify stearoyl‐CoA desaturase (SCD) as a tumor‐promoting enzyme and potential therapeutic target in bone metastatic PCa.
Alexis Wilson   +7 more
wiley   +1 more source

Characteristics of Relative Navigation Algorithms Using Laser

open access: yesJournal of Astronomy and Space Sciences, 2018
This paper presents a satellite relative navigation strategy for formation flying, which chooses an appropriate navigation algorithm according to the operating environment.
Dae-Eun Kang, Sang-Young Park, Jihae Son
doaj   +1 more source

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