Results 31 to 40 of about 977 (177)

Study on project trajectory of air-to-ground missile with strapdown seeker under multi constraints

open access: yesXibei Gongye Daxue Xuebao, 2021
The air-to-ground missile with strapdown seeker may have the problems, including small field of view(FOV), limited overload, and fall angle constraint. To solve the above mentioned problem, a phased guidance scheme is proposed. In this scheme, the attack

doaj   +1 more source

Multi-Body Dynamics Modeling and Control for Strapdown Inertially Stabilized Platforms Considering Light Base Support Characteristics

open access: yesApplied Sciences, 2020
The dynamics model used for inertially or strapdown inertially stabilized platforms is based on the rotor and motor load, and it either does not consider the stator or it implicitly assumes a fixed stator.
Zhongshi Wang   +3 more
doaj   +1 more source

Shearer position and attitude adjustment based on strapdown inertial navigation system

open access: yesGong-kuang zidonghua, 2017
For problems of inaccurate shearer position and attitude adjustment, a shearer position and attitude adjustment method based on strapdown inertial navigation system was researched on the ground with slowly varied angle.
ZHANG Qing   +4 more
doaj   +1 more source

Improving the speed of initial alignment for marine strapdown inertial navigation systems using heading control signal feedback in extended Kalman filter

open access: yesInternational Journal of Advanced Robotic Systems, 2020
In this article, a method was proposed for strapdown inertial navigation systems initial alignment by drawing on the conventional alignment method for stable platform navigation systems.
Hossein Rahimi, Amir Ali Nikkhah
doaj   +1 more source

The Analysis of Spaceborne SAR Interferometry Based on Strapdown Inertial Navigation Mechanism and Maximum Likelihood Method

open access: yesChemical Engineering Transactions, 2016
In this paper, a spaceborne SAR interferometry system operates on the strapdown inertial navigation mechanism, which is based on maximum likelihood phase estimation method. It has been shown using simulated data that phase estimation of cross-track multi-
S.G. Lei, L. Zhang, W.P. Li
doaj   +1 more source

An Algorithm for Affordable Vision-Based GNSS-Denied Strapdown Celestial Navigation

open access: yesDrones
Celestial navigation is rarely seen in modern Uncrewed Aerial Vehicles (UAVs). The size and weight of a stabilized imaging system, and the lack of precision, tend to be at odds with the operational requirements of the aircraft.
Samuel Teague, Javaan Chahl
doaj   +1 more source

An Alignment Method for Strapdown Inertial Navigation Systems Assisted by Doppler Radar on a Vehicle-Borne Moving Base

open access: yesSensors, 2019
In this study, we investigated a novel method for high-accuracy autonomous alignment of a strapdown inertial navigation system assisted by Doppler radar on a vehicle-borne moving base, which effectively avoids the measurement errors caused by wheel-slip ...
Bo Yang   +3 more
doaj   +1 more source

State transformation extended Kalman filter–based tightly coupled strapdown inertial navigation system/global navigation satellite system/laser Doppler velocimeter integration for seamless navigation of unmanned ground vehicle in urban areas

open access: yesInternational Journal of Advanced Robotic Systems, 2023
With the rapid development of unmanned ground vehicle industry, how to achieve continuous, reliable, and high-accuracy navigation becomes very important. At present, the integrated navigation with global navigation satellite system and strapdown inertial
Xue-Yu Du   +4 more
doaj   +1 more source

Research on precise positioning of shield roadheader robot system in coal mine

open access: yesGong-kuang zidonghua, 2022
At present, most of the positioning methods of underground tunneling equipment in coal mines adopt single auxiliary measurement methods such as machine vision, odometer and total station to combine with inertial navigation measurement to suppress the ...
MA Hongwei   +3 more
doaj   +1 more source

Novel Calibration Algorithm for a Three-Axis Strapdown Magnetometer [PDF]

open access: yesSensors, 2014
A complete error calibration model with 12 independent parameters is established by analyzing the three-axis magnetometer error mechanism. The said model conforms to an ellipsoid restriction, the parameters of the ellipsoid equation are estimated, and the ellipsoid coefficient matrix is derived.
Yan Liu, Xi Li, Xiao Zhang, Yi Feng
openaire   +3 more sources

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