Results 21 to 30 of about 3,559,681 (331)

Photonic Image-free Mixer Based on a Dual-Parallel Mach-Zehnder Modulator and Fiber Dispersion for Radio-Over-Fiber System

open access: yesIEEE Photonics Journal, 2019
In this paper, a simple image rejection mixer based on the dispersion effect in the single mode fiber is proposed and experimentally demonstrated for the radio-over-fiber (RoF) system.
Tao Lin   +9 more
doaj   +1 more source

Interacting Multiple Model UAV Navigation Algorithm Based on a Robust Cubature Kalman Filter

open access: yesIEEE Access, 2020
To improve the precision and robustness of Unmanned Aerial Vehicle (UAV) integrated navigation systems, this paper presents an Interacting Multiple Model (IMM) navigation algorithm based on a Robust Cubature Kalman Filter (RCKF) with modified Zero ...
Xuhang Liu   +3 more
doaj   +1 more source

Scalable Contact-Capacitive MEMS Switches With High Capacitance Ratio for Millimeter-Wave Applications

open access: yesIEEE Access, 2022
This paper proposes a series of optimized scalable contact-capacitive radio frequency micro- electro-mechanical systems (RF MEMS) switches for millimeter wave applications.
Yulong Zhang   +3 more
doaj   +1 more source

MU R-CNN: A Two-Dimensional Code Instance Segmentation Network Based on Deep Learning

open access: yesFuture Internet, 2019
In the context of Industry 4.0, the most popular way to identify and track objects is to add tags, and currently most companies still use cheap quick response (QR) tags, which can be positioned by computer vision (CV) technology.
Baoxi Yuan   +8 more
doaj   +1 more source

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

Ant navigation: resetting the path integrator [PDF]

open access: yesJournal of Experimental Biology, 2006
SUMMARY Desert ants use path integration as their predominant system of long-distance navigation, but they also make use of route-defining and nest-defining visual landmarks. Such landmark-gained information might override the information provided by the path integrator, but nevertheless the path integrator keeps running.
Knaden, M, Wehner, R
openaire   +4 more sources

Classifier Adaptive Fusion: Deep Learning for Robust Outdoor Vehicle Visual Tracking

open access: yesIEEE Access, 2019
Deep auto-encoder (DAE) models have been successfully used in object tracking due to its strong capability of feature representation. However, single deep auto-encoder model would not be robust enough to represent the appearance model of outdoor vehicle ...
Jing Xin, Xing Du, Yaqian Shi
doaj   +1 more source

Autonomous Navigation of Unmanned Aircraft Using Space Target LOS Measurements and QLEKF

open access: yesSensors, 2022
An autonomous navigation method based on the fusion of INS (inertial navigation system) measurements with the line-of-sight (LOS) observations of space targets is presented for unmanned aircrafts. INS/GNSS (global navigation satellite system) integration
Kai Xiong, Peng Zhou, Chunling Wei
doaj   +1 more source

Research on Integrated Navigation System of Agricultural Machinery Based on RTK-BDS/INS

open access: yesAgriculture, 2022
To improve the positioning accuracy and reliability of autonomous navigation agricultural machinery and reduce the cost of high-precision positioning, an integrated navigation system based on Real-Time Dynamic Kinematic BeiDou Navigation Satellite System
Yourui Huang   +4 more
semanticscholar   +1 more source

A Robust Fusion Methodology for MEMS-Based Land Vehicle Navigation in GNSS-Challenged Environments

open access: yesIEEE Access, 2020
How to effectively blend global navigation satellite system (GNSS) and inertial navigation system (INS) data to achieve an optimal solution in harsh environments has always been an urgent task.
Song Yue   +4 more
doaj   +1 more source

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