This algorithm uses the GPS satellite system for navigation. It is an innovative algorithm, because it employs only the Doppler measurements and starts with a known initial location of the receiver. Initially, this algorithm was developed for fixed point GPS transmitters. In the paper we have successfully attempted to adapt this algorithm for moving satellites. This algorithm appears to perform...

In this paper we describe the design and implementation of a unique proportional whisker sensor and our general behaviour based software architecture. The Architecture for Behaviour Based Agents (ABBA) is used to realise purposive mobile robot navigation in a cluttered indoor environment. The whisker was developed specifically to meet the requirements of high speed and close wall following. We ...

XML Schema defines identity constraints, including key and foreign key constraints. We consider the problem of navigating from a keyed element to its referring ”children” and, conversely, from an element containing a foreign key to the ”parent” it references. Our contributions are as follows. We extend an expressive fragment of XPath, called XPath′, with navigation axes according to foreign key...

In this paper we present a micro-electrical mechanical system (MEMS) based pedestrian navigation system (PNS) for seamless positioning. The sub-algorithms for the PNS are developed and the positioning performance is enhanced using the modified receding horizon Kalman finite impulse response filter (MRHKF). The PNS consists of a biaxial accelerometer and a biaxial magnetic compass mounted on a s...

In this paper, the performance of a Ring Laser Gyro based inertial navigation is investigated. Dynamic and stochastic modeling are applied to gyro simulation and performance evaluation. In the dynamic model, some parameters such as scale factor and environmental sensitivity have been determined, whereas in the stochastic model, the other parameters such as random drift and measurement noise...

STUDY DESIGN Retrospective study. PURPOSE We compared the accuracy of O-arm-based navigation with computed tomography (CT)-based navigation in scoliotic surgery. OVERVIEW OF LITERATURE No previous reports comparing the results of O-arm-based navigation with conventional CT-based navigation in scoliotic surgery have been published. METHODS A total of 222 pedicle screws were implanted in 29...

with the continuous development of the industrialization process, the countries all over the world gradually appeared lack of agricultural labor force and aging phenomenon, which was especially prominent in developed countries. however the agricultural robot with high operating efficiency, high qualities of work will play an increasingly important role in future agricultural production. robot n...

This paper surveys the developments of last 10 years in the area of vision based target tracking for autonomous vehicles navigation. First, the motivations and applications of using vision based target tracking for autonomous vehicles navigation are presented in the introduction section. It can be concluded that it is very necessary to develop robust visual target tracking based navigation algo...

localization of brain lesions and prevention of damage to vital structures are important in operation of brain pathologies. despite development of many techniques including angiography, mri, sonography, and frame base stereotaxy, a more accurate localizing technique is still needed (1, 2). a step forward to achieve this goal is to develop a navigation system. in this manuscript, we explained so...

For the development of mining industry and its urgent demand for positioning and navigation technology, three new underground mine positioning and navigation systems based on the existing positioning technologies would be investigated and studied in this paper, where Wireless Ethernet-based navigation system as a new navigation system is first used in underground mine. Three types of positionin...