The rapid development of smartphone sensors has provided rich indoor pedestrian trajectory data for indoor location-based applications. To improve the quality of these collected trajectory data, map matching methods are widely used to correct trajectories. However, these existing matching methods usually cannot achieve satisfactory accuracy and efficiency and have difficulty in exploiting the r...

This paper presents research on the interoperability of trajectory-based automation concepts and technologies with modern Flight Management Systems and datalink communication available on many of today’s commercial aircraft. A tight integration of trajectory-based ground automation systems with the aircraft Flight Management System through datalink will enable mid-term and far-term benefits fro...

For the parallel parking problem in narrow space, this paper proposes a trajectory tracking control method with novel planning layer for autonomous based on numerical optimization algorithm and model predictive control. In layer, vehicle kinematics suitable low-velocity scene is established. Considering physical constraints, boundary condition obstacle avoidance constraints during process, task...

As the development of location based service, such as GPS and RFID, a great volume of trajectory data can be collected. As a result, mining knowledge from these data has become an attractive topic. The trajectory outlier detection algorithm, proposed in this paper, can be used to detect trajectory outliers by comparing the structure between each trajectory segment pairs. Firstly, a new concept ...

The new positioning and information capture technologies are able to treat data related to moving objects taking place in targeted phenomena. This gave birth to a new data source type called trajectory data (TD) which handle information related to moving objects. Trajectory Data must be integrated in a new data warehouse type called trajectory data warehouse (TDW) that is essential to model and...

Of the many direct numerical methods, the pseudospectral method serves as an effective tool to solve the reentry trajectory optimization for hypersonic vehicles. However, the traditional pseudospectral method is time-consuming due to large number of discretization points. For the purpose of autonomous and adaptive reentry guidance, the research herein presents a multistage trajectory control st...

Efficient storage and retrieval of trajectory indexes has become an essential requirement for moving objects databases. The existing 3DR-tree is known to be an effective trajectory index structure for processing trajectory and time slice queries. Efficient processing of trajectory queries requires parallel processing based on indexes and parallel access methods for the trajectory index. Several...

In this paper, we propose a new technique to enhance the trajectory shape analysis by explicitly considering the speed attribute of trajectory data, as an effective and efficient way for anomaly detection. An object motion trajectory is mathematically represented by the Kernel Density Estimation, taking into account both the shape of the trajectory and the speed of the moving object. An unsuper...

This paper presents cubic spline interpolation based trajectory planning method which is aiming to achieve smooth biped robot walking trajectory. We first characterize the bipedal walking cycle and point out some major issues that need to be addressed to plan a continuous swing leg trajectory by using the concept of cubic polynomial and cubic spline interpolation. By applying these interpolatio...