Privacy Protection in the Relative Position Determination for Two Spatial Geometric Objects

2006 ◽  
Vol 43 (3) ◽  
pp. 410 ◽  
Author(s):  
Yonglong Luo
Keyword(s):  
Relative Position ◽  
Privacy Protection ◽  
Position Determination ◽  
Geometric Objects ◽  
Relative Position Determination

Relative position determination of a lunar rover using high-accuracy multi-frequency same-beam VLBI

2010 ◽  
Vol 53 (3) ◽  
pp. 571-578 ◽  
Author(s):  
QingHui Liu ◽  
Ming Chen ◽  
WeiMing Xiong ◽  
ZhiHan Qian ◽  
JinLing Li ◽  
...  
Keyword(s):  
Relative Position ◽  
High Accuracy ◽  
Position Determination ◽  
Lunar Rover ◽  
Relative Position Determination

Privacy Preserving for Location-Based Services in Road Networks

2014 ◽  
Vol 998-999 ◽  
pp. 1165-1168
Author(s):  
Kan Gong Liu ◽  
Jian Pei Zhang ◽  
Jing Yang
Keyword(s):  
Theoretical Analysis ◽  
Relative Position ◽  
Privacy Protection ◽  
Road Network ◽  
Euclidean Distance ◽  
Location Based Services ◽  
Experimental Results ◽  
Network Characteristics ◽  
The Road ◽  
Projection Distance

The existing road network privacy protection models do not consider the density of the user and the road length. To solve this problem, we propose a Euclidean distance-based road network privacy protection model. First, we put the projection distance of sections in the road network context as the actual distance between two users located in this section. For users in different sections, we put the sum of distance with respect to the length of sections as the relative position between them. Secondly, combining traditional anonymity models and road network characteristics, we propose the road network (k, l)-anonymous model and design algorithms to implement it. Finally, we use the experimental verify performance of the algorithm. Theoretical analysis and experimental results show that the algorithm is correct and effective.

scholarly journals Pose estimation for the case of prolonged under-ice based AUV

2021 ◽  
Vol 2131 (3) ◽  
pp. 032068
Author(s):  
D Frolov ◽  
S Polovko
Keyword(s):  
Mathematical Modeling ◽  
Pose Estimation ◽  
Deep Water ◽  
Relative Position ◽  
Image Synthesis ◽  
Underwater Vehicle ◽  
Positioning System ◽  
System Of Equations ◽  
Technological Operation ◽  
Position Determination

Abstract The technological operation of AUV docking is considered. An approach to its solution and modeling is proposed. A system for determining the relative position based on cameras and active-light markers is described. Active markers are offered to improve detection in dark deep water. A system of equations for modeling the dynamics of an underwater vehicle is described and a complete mathematical modeling of the whole pipeline of the positioning system is performed: image synthesis based on scene geometry, position determination based on the solution of the PnP problem, generating control based on synthesized measurements and modelling of the corresponding movement of the AUV. The presented model can be used to test various scenarios for the execution of a docking operation.

Proposal Tightens Privacy Protection

2010 ◽  
Vol 43 (13) ◽  
pp. 77
Author(s):  
MARY ELLEN SCHNEIDER
Keyword(s):  
Privacy Protection
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