نتایج جستجو برای: maneuvering movement

تعداد نتایج: 158928  

2004
Jae-Chern Yoo Young-Soo Kim

We present a new data association algorithm using range-pro le, which has maneuver-following capability. In this approach, targets can be identi ed as a by-product of the data association, not requiring a separate step for target identi cation. Early data association cannot identify targets and thus requires a large amount of computation not to miss tracks when targets maneuver and cross each o...

2006
Kamran Mohseni

Compact zero-mass pulsatile jet actuators are proposed for low-speed maneuvering and station keeping of small underwater vehicles. The flow field of such jets are initially dominated by vortex ring formation. Pinched-off vortices characterize the extremum impulse accumulated by the leading vortex ring in a vortex ring formation process. Relevant parameters in this process are identified in orde...

2017
Lifan Sun Baofeng Ji Jian Lan Zishu He Jiexin Pu

The key to successful maneuvering complex extended object tracking (MCEOT) using range extent measurements provided by high resolution sensors lies in accurate and effective modeling of both the extension dynamics and the centroid kinematics. During object maneuvers, the extension dynamics of an object with a complex shape is highly coupled with the centroid kinematics. However, this difficult ...

1999
Kai Virtanen Tuomas Raivio Raimo P. Hämäläinen

We simulate and analyze pilot decision making in one-on-one air combat using an influence diagram. Unlike most of the existing approaches, an influence diagram graphically describes the factors of a decision process and explicitly handles the decision maker’s preferences under conditions of uncertainty. In the pilot decision model, the possible combat situations related to each maneuver alterna...

2017
Liang-Qun Li Xiao-Li Wang Zong-Xiang Liu Wei-Xin Xie

Novel auxiliary truncated unscented Kalman filtering (ATUKF) is proposed for bearings-only maneuvering target tracking in this paper. In the proposed algorithm, to deal with arbitrary changes in motion models, a modified prior probability density function (PDF) is derived based on some auxiliary target characteristics and current measurements. Then, the modified prior PDF is approximated as a G...

2004
Katherine Thornton

E, and Mariton, M. (1991) Tracking a 3-D maneuvering target with passive sensors. IEEE Transactions on Aerospace and Electronic System, (1991), 725-739. [17] Vacher, P., Barret, I., and Gauvrit, M. (1992) Design of a tracking algorithm for an advanced ATC system. In Y. Bar-Shalom (Ed.), Multitarget-Multisensor Tracking: Applications and Advances, Vol. 11. Dedham, M A Artech House, 1992,l-29. [1...

2004
X. Rong Li Vesselin P. Jilkov

This is a part of Part VI (nonlinear filtering) of a series of papers that provide a comprehensive survey of techniques for tracking maneuvering targets without addressing the so-called measurement-origin uncertainty. Part I [52] and Part II [48] deal with target motion models. Part III [49], Part IV [50], and Part V [51] cover measurement models, maneuver detection based techniques, and multip...

2016
Wang Yingyan Zeng Rui Yi Wu

In order to improve the performance of target tracking and solve the defects of unscented Kalman filter, a target tracking algorithm based on improved unscented Kalman filter is proposed in this paper. Firstly, the fading factor is introduced into the filter based on strong tracking filter to avoid the filter divergence, and then wavelet transform is used to estimate the statistical characteris...

2010
Fei Zhou Wei-jun He Xin-yue Fan

This paper deals with the problem of maneuvering target tracking in wireless tracking service. It results in a mixed linear/non-linear Models estimation problem. For maneuvering tracking systems, these problems are traditionally handled using the extended Kalman filter or Particle filter. In this paper, Marginalized Particle Filter is presented for applications in such problem. The algorithm ma...

Journal: :Magnetic resonance in medicine 2006
Jong B Park Bob S Hu Steven M Conolly Krishna S Nayak Dwight G Nishimura

An ungated spiral phase-contrast (USPC) method was used to measure cardiac output (CO) rapidly and conveniently. The USPC method, which was originally designed for small peripheral vessels, was modified to assess CO by measuring flow in the ascending aorta (AA). The modified USPC used a 12-interleaf spiral trajectory to acquire full-image data every 283 ms with 2-mm spatial resolution. The tota...

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