Results 211 to 220 of about 73,817 (260)
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Relative Constrained SLAM for Robot Navigation
2019 American Control Conference (ACC), 2019This paper presents a relative-constrained SLAM formulation where partial a priori landmark information is built into the SLAM problem. Incorporating a priori relative constraints is motivated by the desire to avoid drawbacks of global constraints and to reduce uncertainty in the overall map and pose estimates.
Duowen Qian +2 more
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Journal of Navigation, 1974
Liverpool has long been a major seaport and the present centre of nautical education at the Department of Maritime Studies of Liverpool Polytechnic has developed from the Liverpool Nautical College over several decades. Most of the students have a background of experience in merchant shipping and the port industry.
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Liverpool has long been a major seaport and the present centre of nautical education at the Department of Maritime Studies of Liverpool Polytechnic has developed from the Liverpool Nautical College over several decades. Most of the students have a background of experience in merchant shipping and the port industry.
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Journal of Navigation, 1972
The following discussion took place at an open session of the Technical Committee held at the Royal Aeronautical Society in London on 19 January 1972 with Mr. H. E. Smith in the Chair.The Chairman: Relative navigation has a wide connotation, but for the purpose of our discussion it may be applied firstly to aircraft management in the positive or ...
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The following discussion took place at an open session of the Technical Committee held at the Royal Aeronautical Society in London on 19 January 1972 with Mr. H. E. Smith in the Chair.The Chairman: Relative navigation has a wide connotation, but for the purpose of our discussion it may be applied firstly to aircraft management in the positive or ...
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Relative Navigation Technology
2018Relative navigation of spacecraft refers to determine the relative position and relative velocity between the two spacecraft (Yang et al. in Aerosp Shanghai (02):45–54 [1], Yang et al. in Aerosp Shanghai 27(2):38–45 [2], Shi et al. in Aerosp Control 28(6):43–48 [3]) by using spaceborne measuring equipment and combining with the relative motion equation
Fucheng Liu, Shan Lu, Yue Sun
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Spacecraft navigation and relativity
American Journal of Physics, 1985Special relativity relates measurements in a ‘‘moving’’ frame to measurements in a ‘‘rest’’ frame. Navigation, as it is performed in practice, uses neither pure a ‘‘rest’’ nor pure a ‘‘moving’’ frame, but instead measures distance in the fixed, Earth, frame and time in the moving, ship, frame.
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Relative Navigation of Air Vehicles
Journal of Guidance, Control, and Dynamics, 2008This paper derives the full equations of motion for relative navigation of air vehicles. An extended Kalman filter is used for estimating the relative position and attitude of two air vehicles designated leader and follower. All leader states are assumed known, whereas the relative states are estimated using line-of-sight measurements between the ...
Adam M. Fosbury, John L. Crassidis
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Relative indoor spatial tracking and navigation
International Journal of Wireless and Mobile Computing, 2015Indoor Positioning and Indoor Navigation IPIN is a topic of research and industrial interest. Towards the direction of indoor positioning there are two main alternatives: absolute and relative. Absolute positioning requires infrastructure whereas relative positioning is based on dead reckoning and does not require any infrastructure.
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Multispectral Sensing for Relative Navigation
2019A relative navigation system based on multispectral sensing device, for non-cooperative rendezvous between a chaser and a target, as well as for the descent and landing on an asteroid, is presented. Firstly, the advantages of using a multispectral camera capable of detecting different spectral signatures are discussed.
FIENGO, A. +5 more
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Relative navigation with passive underwater acoustic sensing
2015 12th International Conference on Ubiquitous Robots and Ambient Intelligence (URAI), 2015Navigation in an underwater environment is challenging because global positioning system (GPS) is not available due to the rapid attenuation of electro-magnetic waves in water. Acoustic baseline systems have been good alternatives to GPS for correcting dead-reckoning errors. However, their deployment and recovery generally require much effort.
Yeonjoo Shim +2 more
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Mars Rendezvous Relative Navigation Implementation for SINPLEX
AIAA/AAS Astrodynamics Specialist Conference, 2014In this work the development of the navigation solution for the Mars rendezvous scenario for the SINPLEX system is described. SINPLEX is a miniaturized integrated navigation system comprised of an IMU, laser range finder, navigation camera and star tracker.
Sagliano, Marco +2 more
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