Recently, several researchers have studied a vector tracking loop, such as a vector delay lock loop (VDLL) and a vector frequency lock loop (VFLL), to obtain an improved tracking performance in GPS receiver [1~6]. The vector based tracking loop technique uses the correlation of each satellite signal and user dynamics. The receiver with the vector tracking loop can get enough total signal power ...

GPS vector receive make the tasks of signal tracking and navigation state estimation are integrated into an algorithm which can complement traditional scalar receiver tracking independent and parallel tracking disadvantage. Through integration with INS, the GPS signal in jamming or weak environment based on vector tracking ultra-tightly coupled GNSS/INS integration system has significant advant...

Visual attention and movement have evolved by many ways in eye tracking system. With the mechanism and functionality of eye movement, tracking human eye with high accuracy is possible. In eye tracking system, calibration technique can be considered as the first crucial step to be taken before eye can be tracked. The technique highly depends on a number of calibration points used and the selecti...

We address the problem of tracking points in dense vector fields. Such vector fields may come from computational fluid dynamics simulations, environmental monitoring sensors, or dense point tracking of video data. To track points in vector fields, we capture the distribution of higher-order properties of vector fields (e.g., properties derived from the gradient of the velocity vector field) in ...

This study investigated whether there were individual differences in within-category sensitivity to the voicing contrast and, if so, whether these differences were related to listeners‟ differential sensitivity to different acoustic cues. To do this, we conducted two speech perception experiments with English-speaking adults: visual analogue scaling (VAS) and anticipatory eye movement (AEM). St...

Feature Flow Fields (FFF) are an approach to tracking features in a time-dependent vector field v. The main idea is to introduce an appropriate vector field f in space-time, such that a feature tracking in v corresponds to a stream line integration in f . The original approach of feature tracking using FFF requested that the complete vector field v is kept in main memory. Especially for 3D vect...

Multipath interference and non-line-of-sight (NLOS) reception are major error sources when using global navigation satellite systems (GNSS) in urban environments. A promising approach to minimize the effect of multipath interference and aid NLOS detection is vector tracking. Therefore the objective of this research is to assess vector tracking in a dense urban environment to determine its effec...

Vector time pairs are a new method for tracking synchronization metadata. A vector time pair consists of two vector times: one tracking file modification history and one tracking file synchronization history. Because the vector times are maintained separately and used for different purposes, different algorithms and optimizations can be applied to each. As a result, vector time pairs impose no ...

Vector time pairs are a new method for tracking synchronization metadata. A vector time pair consists of two vector times: one tracking file modification history and one tracking file synchronization history. Because the vector times are maintained separately and used for different purposes, different algorithms and optimizations can be applied to each. As a result, vector time pairs impose no ...