Results 61 to 70 of about 1,636 (211)

Linear Track Underwater Carrier SINS Correction Method Based on Hydroacoustic Single Beacon

IEEE Access, 2022
Precise positioning of underwater vehicles using only a single beacon for range measurement is one of the toughest challenges for underwater navigation, especially when the underwater vehicle travels along a straight path resulting in the system ...
Enfan Lin, Jiangning Xu, Feng Zha, Hongyang He, Miao Wu   +4 more
doaj   +1 more source

Passive Target Motion Analysis With Own‐Ship Location Uncertainty in the Presence of Non‐Gaussian Sensor Noise

IET Radar, Sonar &Navigation, Volume 19, Issue 1, January/December 2025.
This work explores underwater TMA by incorporating time delay and Doppler frequency measurements along with angle data, eliminating the need for own‐ship manoeuvre and improving estimation accuracy in presence of non‐Gaussian sensor noise. Furthermore, since the own‐ship's position is inherently uncertain due to navigation errors, this work addresses ...
Rohit Kumar Singh, Shreya Das, Shovan Bhaumik   +2 more
wiley   +1 more source

Fault Detection and Isolation for Redundant Inertial Measurement Unit under Quantization

Applied Sciences, 2018
Fault detection and isolation with redundant strapdown inertial measurement unit is critical for ensuring the reliability of the guidance or navigation system in the fields of both aeronautics and astronautics.
Tong Zhang, Fenfen Wang, Wenxing Fu
doaj   +1 more source

Multiframe Target Localization With Strapdown Seeker Based on Self‐Adaptive L‐SHADE

International Journal of Aerospace Engineering, Volume 2025, Issue 1, 2025.
Strapdown seekers are increasingly used in the terminal guidance for the advantages of small size and low cost. However, due to the coupling of the seeker with the missile and its limited field of view, there is a risk of losing the target. This paper proposes a multiframe fusion target localization method for missiles with strapdown seekers, which can
Jiayang Wu, Huabo Yang, Hao Yang, Jiexin Zhou, Shifeng Zhang, Zhang Jiaying   +5 more
wiley   +1 more source

SmokeNav: Millimeter‐Wave‐Radar/Inertial Measurement Unit Integrated Positioning and Semantic Mapping in Visually Degraded Environments for First Responders

Advanced Intelligent Systems, Volume 6, Issue 12, December 2024.
In this work, SmokeNav, a system that fuses inertial sensor and millimeter‐wave radar for accurate user localization and metric map reconstruction in visually degraded environments, is presented. Using a foot‐mounted inertial sensor with human motion constraints, SmokeNav leverages inertial positioning to construct occupancy maps from radar data.
Changhao Chen, Zhiqiang Yao, Junlin Jiang, Xianfei Pan, Xiaofeng He, Ze Chen, Bing Wang   +6 more
wiley   +1 more source

Robust adaptive non‐linear alignment algorithm for SINS/DVL integrated navigation system based on variational Bayesian

IET Science, Measurement &Technology, Volume 18, Issue 9, Page 524-539, November 2024.
The proposed algorithm VBRAUKF is useful for dynamic alignment of SINS/DVL. According to the inaccurate modelling of the observation model, an adaptive estimation strategy for the measurement noise covariance is designed by Variational Bayesian algorithm based on unscented Kalman filter algorithm to solve dynamic attitude alignment for SINS/DVL ...
Bing Zhu, Jingshu Li, Guoheng Cui, Zuohu Li, Ge Tian, Xia Guo   +5 more
wiley   +1 more source

A Robust Self-Alignment Method for Ship’s Strapdown INS Under Mooring Conditions

Sensors, 2013
Strapdown inertial navigation systems (INS) need an alignment process to determine the initial attitude matrix between the body frame and the navigation frame. The conventional alignment process is to compute the initial attitude matrix using the gravity
Tong Cao, Guangtao Zhou, Naser El-Sheimy, Chunyang Yu, Haiyu Lan, Feng Sun, Hang Liu   +6 more
doaj   +1 more source

Analysis of the Strapdown Inertial Navigation System (SINS) Error Genesis

, 2021
Analysis and simulation of the Strapdown Inertial Navigation System (SINS) error genesis revealed that the East Feedback Contour has the greatest influence on the development of an error in this model, and angular velocity sensor is the critical element.
Trifonovs-Bogdanovs, Pjotrs, Zabirov, Anvar   +1 more
core   +1 more source

Data‐driven observability analysis and enhancement for radome slope estimation with constraints on impact angle and terminal acceleration

IET Radar, Sonar &Navigation, Volume 18, Issue 10, Page 1887-1907, October 2024.
The authors propose a data‐driven observability analysis method for radome aberration estimation systems with LOS‐angle‐only measurements, and an observability‐enhanced guidance law that considers both impact angle and terminal acceleration constraints.
Bingyu Jin, Kelin Lu, Yuping Lu
wiley   +1 more source

SHAKF‐PU: Sage–Husa Adaptive Kalman Filtering‐Based Pedestrian Characteristic Parameter Update Mechanism for Enhancing Step Length Estimation in Pedestrian Dead Reckoning

Applied Bionics and Biomechanics, Volume 2024, Issue 1, 2024.
Step length estimation (SLE) is the core process for pedestrian dead reckoning (PDR) for indoor positioning. Original SLE requires accurate estimations of pedestrian characteristic parameter (PCP) by the linear update, which may cause large distance errors.
Chinyang Henry Tseng, Jiunn-Yih Wu, Francesca Cordella   +2 more
wiley   +1 more source