scholarly journals NON-TAYLOR SERIES BASED POSITIONING METHOD FOR LOCATION BASED SERVICES

2008 ◽  
Author(s):  
Tan Kim Geok ◽  
Ahmed Wasif Reza ◽  
San Choy Liew
Keyword(s):  
Global Positioning System ◽  
Taylor Series ◽  
Taylor Series Expansion ◽  
Location Based Services ◽  
Service Availability ◽  
Position Information ◽  
Linear Distance ◽  
Global Positioning ◽  
Assisted Gps ◽  
Positioning Method

Location Based Services (LBS) has gained increasing popularity in major cities. Due to blocking from man-made structures, the existing Global Positioning System (GPS) could not satisfy LBS applications, especially in street canyon and indoor surroundings. This has lead to the development of Assisted GPS (A-GPS) which can provide better service availability and accuracy gain. In the conventional positioning method, Taylor series expansion is applied to solve non-linear distance equations. This method requires an initial estimation of A-GPS receiver’s position. This paper investigates the positioning method for LBS based on hybrid E-OTD/GNSS. The proposed positioning method is non-Taylor series based. Therefore, it involves less complicated mathematical expansion and substitution. A flexible LBS positioning tool is developed which can generate position information in convenient way. It supports both Taylor series and non-Taylor series based positioning methods. The obtained results showed that the proposed non-Taylor series based positioning method can achieve better positioning accuracy.  

scholarly journals Traffic Flow Pattern in Road Network Using Clustering

2020 ◽  
Vol 5 (8) ◽  
pp. 229-230
Author(s):  
Ganga Gudi ◽  
Dr. Hanumanthappa M
Keyword(s):  
Traffic Flow ◽  
Global Positioning System ◽  
Road Network ◽  
Location Based Services ◽  
Positioning System ◽  
Specific Time ◽  
Real World Problem ◽  
Time Period ◽  
Global Positioning ◽  
Enormous Amount

Wireless communication has become important in location-based services. The enormous amount of data is extracted for useful information to solve the real world problem. Global positioning system, is used to captures the position of an object at specific time period. The scheme is finding the congested route by considering the number of vehicles in a road segment. It consists of two methods, firstly it finds the group of points based on consistency of route points and second it arranges the groups in sequence of values for each route

scholarly journals A Multi-Robot Formation Platform based on an Indoor Global Positioning System

2019 ◽  
Vol 9 (6) ◽  
pp. 1165
Author(s):  
Hong’an Yang ◽  
Xuefeng Bao ◽  
Shaohua Zhang ◽  
Xu Wang
Keyword(s):  
Mobile Robot ◽  
Global Positioning System ◽  
Formation Control ◽  
Transmission Control Protocol ◽  
Indoor Navigation ◽  
Wheeled Mobile Robot ◽  
Positioning System ◽  
Position Information ◽  
Global Positioning ◽  
Multi Robot

Aimed at the problem that experimental verifications are difficult to execute due to lacking effective experimental platforms in the research field of multi-robot formation, we design a simple multi-robot formation platform. This proposed general and low-cost multi-robot formation platform includes the indoor global-positioning system, the multi-robot communication system, and the wheeled mobile robot hardware. For each wheeled mobile robot in our platform, its real-time position information in the centimeter‑level precise is obtained by the Marvelmind Indoor Navigation System and orientation information is obtained by the six-degree-of-freedom gyroscope. The Transmission Control Protocol/Internet Protocol (TCP/IP) wireless communication infrastructure is selected to support the communication among robots and the data collection in the process of experiments. Finally, a set of leader–follower formation experiments are performed by our platform, which include three trajectory tracking experiments of different types and numbers under deterministic environment and a formation-maintaining experiment with external disturbances. The results illustrate that our multi-robot formation platform can be effectively used as a general testbed to evaluate and verify the feasibility and correctness of the theoretical methods in the multi-robot formation. What is more, the proposed simple and general formation platform is beneficial to the development of platforms in the fields of multi-robot coordination, formation control, and search and rescue missions.

scholarly journals Seamless Guidance System Combining GPS, BLE Beacon, and NFC Technologies

2016 ◽  
Vol 2016 ◽  
pp. 1-12 ◽  
Author(s):  
Rung-Shiang Cheng ◽  
Wei-Jun Hong ◽  
Jheng-Syun Wang ◽  
Kawuu W. Lin
Keyword(s):  
Global Positioning System ◽  
Near Field ◽  
Smart Phone ◽  
Location Based Services ◽  
Guidance System ◽  
Campus Environment ◽  
Accurate Localization ◽  
Global Positioning ◽  
Graphic Information ◽  
Outdoor Environments

Users rely increasingly on Location-Based Services (LBS) and automated navigation/guidance systems nowadays. However, while such services are easily implemented in outdoor environments using Global Positioning System (GPS) technology, a requirement still exists for accurate localization and guidance schemes in indoor settings. Accordingly, the present study proposes a system based on GPS, Bluetooth Low Energy (BLE) beacons, and Near Field Communication (NFC) technology. Through establishing graphic information and the design of algorithm, this study develops a guidance system for indoors and outdoors on smart phones, wishing to give user perfect smart life through this system. The proposed system is implemented on a smart phone and evaluated on a student campus environment. The experimental results confirm the ability of the proposed app to switch automatically from an outdoor mode to an indoor mode and to guide the user to requested target destination via the shortest possible route.

scholarly journals An Empirical Recommendation Framework to Support Location-Based Services

2020 ◽  
Vol 12 (9) ◽  
pp. 154 ◽  
Author(s):  
Animesh Chandra Roy ◽  
Mohammad Shamsul Arefin ◽  
A. S. M. Kayes ◽  
Mohammad Hammoudeh ◽  
Khandakar Ahmed
Keyword(s):  
Global Positioning System ◽  
Recommendation System ◽  
Spatial Clustering ◽  
Location Based Services ◽  
Point Of Interest ◽  
Dbscan Algorithm ◽  
Global Positioning ◽  
Similarity Calculation ◽  
Single User ◽  
Interest Profile

The rapid growth of Global Positioning System (GPS) and availability of real-time Geo-located data allow the mobile devices to provide information which leads towards the Location Based Services (LBS). The need for providing suggestions to personals about the activities of their interests, the LBS contributing more effectively to this purpose. Recommendation system (RS) is one of the most effective and efficient features that has been initiated by the LBS. Our proposed system is intended to design a recommendation system that will provide suggestions to the user and also find a suitable place for a group of users and it is according to their preferred type of places. In our work, we propose the Density-Based Spatial Clustering of Applications with Noise (DBSCAN) algorithm for clustering the check-in spots of the user’s and user-based Collaborative Filtering (CF) to find similar users as we are considering constructing an interest profile for each user. We also introduced a grid-based structure to present the Point of Interest (POI) into a map. Finally, similarity calculation is done to make the recommendations. We evaluated our system on real world users and acquired the F-measure score on average 0.962 and 0.964 for a single user and for a group of user respectively. We also observed that our system provides effective recommendations for a single user as well as for a group of users.

Eliminating Linear Positioning Bias with Polynomial Approximation in AGPS Method

2012 ◽  
Vol 263-266 ◽  
pp. 383-386 ◽  
Author(s):  
Ji Zhong Li ◽  
Yan Zhao Li
Keyword(s):  
Objective Function ◽  
Global Positioning System ◽  
Polynomial Approximation ◽  
Mobile Station ◽  
Positioning System ◽  
Reference Time ◽  
Positioning Errors ◽  
Global Positioning ◽  
Positioning Method ◽  
Positioning Algorithm

An AGPS (assisted global positioning system) positioning method was researched with polynomial approximation in this paper. Linear positioning errors were found through the analysis of an AGPS positioning algorithm with mobile station (MS) clock error. These errors were engendered to induce a bias of reference moment. The value of an objective function can be quadratically related to the deviation of reference time. Thus, the objective function curve was fitted with three reference time values, and the lowest point of curve to amend the reference time is determined. This method can eliminate linear positioning error.

scholarly journals Aplikasi Pencarian Lokasi Fasilitas Umum Berbasis Foursquare APIv2 pada Sistem Operasi Android

2013 ◽  
Vol 7 (2) ◽  
pp. 209
Author(s):  
Nur Rokhman ◽  
Iqnatius Dimas Nugroho
Keyword(s):  
Operating System ◽  
Social Network ◽  
Global Positioning System ◽  
Location Based Services ◽  
Positioning System ◽  
Public Facility ◽  
Test Results ◽  
Public Facilities ◽  
Global Positioning ◽  
Android Operating System

AbstrakSebuah smartphone umunya dilengkapi dengan Global Positioning System (GPS). Pengguna smartphone  disamping dapat mengetahui lokasi dirinya, umumnya juga ingin mengetahui lokasi sekitarnya. Foursquare merupakan salah satu jejaring sosial yang menyediakan layanan berbasis lokasi. Foursquare memiliki fitur check-in, untuk menandai lokasi pengguna.Dalam penelitian ini akan dikembangkan aplikasi pada perangkat dengan sistem operasi Android yang dapat mencari lokasi fasilitas umum di sekitar pengguna dengan memanfaatkan teknologi layanan berbasis lokasi. Aplikasi ini memanfaatkan data dari Foursquare. Hasil pengujian terhadap aplikasi yang dibangun menunjukkan filter data dan sistem auto check-in berjalan dengan baik sehingga duplikasi data dalam Foursquare dapat diminimalkan.  Kata kunci— Layanan berbasis lokasi,  Android, Foursquare, Fasilitas umum  AbstractA smartphone is equipped with Global Positioning System (GPS). A smartphone user may know  the location itself, and usually want to know the surrounding location. Foursquare is a social network that provide location-based services. Foursquare has a check-in feature to mark the location of the user.This research develops applications on devices with Android operating system that can find  location of public facilities around the user by using  location-based services technology. This application uses Foursquare data.The test results showed that the application can filter data and the check-in systems running properly such that duplication of data in Foursquare can be minimized.  Keywords— Location Based Services (LBS), Android, Foursquare, Public Facility

scholarly journals Development of the Kinematic Global Positioning System Precise Point Positioning Method Using 3-Pass Filter

2012 ◽  
Vol 29 (3) ◽  
pp. 269-274 ◽  
Author(s):  
Byung-Kyu Choi ◽  
Kyoung-Min Roh ◽  
Sung-Ki Cho ◽  
Jong-Uk Park ◽  
Pil-Ho Park ◽  
...  
Keyword(s):  
Global Positioning System ◽  
Precise Point Positioning ◽  
Positioning System ◽  
Pass Filter ◽  
Global Positioning ◽  
Positioning Method ◽  
Point Positioning
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