This paper presents theoretical and experimental results for the estimation of large position and orientation inaccuracies during force-controlled compliant motion. This is a significant improvement over previous results. The estimation is based on position, velocity and force measurements. For large position and orientation inaccuracies, the non-linear estimation problem is not satisfactorily ...

In this paper1, we propose a simple method to introduce a-priori information in position estimation for mobile ad hoc and sensor networks, in order to improve the estimation accuracy. The a-priori information is derived from the movement of the mobile node with respect to the position of fixed anchor nodes, and it is exploited to perform Bayesian estimation procedure. Numerical simulation resul...

This paper describes a position estimation tecnique based on the fusion of data obtained by two independent subsystems in a mobile robot navigation context. The rst subsystem is a self-location one composed of an onboard camera, an onboard image processing unit and artiicial landmarks; the second one is a dead-reckoning subsystem based on odometry. The robot navigation system integrates the pos...

In this paper, we propose a new method to estimate the FOE (Focus of Expansion) from moving camera image sequence for vehicle motion understanding, which does not rely on optical flow vectors. Motion understanding of the camera is very important in many applications. Most of the conventional methods for detection and estimation of the position of FOE rely on estimation of optical flow vector in...

In recent years, position estimation systems using wireless LAN have been actively studied, along with the publication of many contributions. However, most of these location estimation methods require prior knowledge of wireless LAN access point locations. To deploy a location estimation system widely in the real world, it is crucial to develop an efficient pre-acquisition method of wireless LA...

Indoor location estimation system based on existing 802.11 signal strength is becoming increasingly prevalent in the area of mobility and ubiquity. The user-based location determination system utilizes the information of the Signal Strength (SS) received from the surrounding Access Points (APs) to determine the user position. In this paper, we focus on the development of a user position estimat...