Phase Calibration of a 2 by 2 GPS Antenna Array Using Real and Simulated Global Positioning System (GPS) Signals

2002 ◽  
Author(s):  
L. L. Liou ◽  
J. B. Tsui ◽  
D. M. Lin ◽  
S. L. Osman ◽  
C. R. Burneka
Keyword(s):  
Antenna Array ◽  
Global Positioning System ◽  
Positioning System ◽  
Global Positioning ◽  
Phase Calibration ◽  
Gps Antenna

Antenna array based receivers for third generation global positioning system

2017 ◽  
Author(s):  
Mateus da Rosa Zanatta ◽  
Ricardo Kehrle Miranda ◽  
Joao Paulo C. L. da Costa ◽  
Felix Antreich ◽  
Daniel Valle Lima
Keyword(s):  
Antenna Array ◽  
Global Positioning System ◽  
Positioning System ◽  
Third Generation ◽  
Global Positioning

scholarly journals AUTOWAGON

2013 ◽  
pp. 64-67
Author(s):  
ROHIT KESHARWANI ◽  
JASPREET KAUR KHALSA
Keyword(s):  
Global Positioning System ◽  
Tracking System ◽  
Base Station ◽  
Vehicle Tracking ◽  
Positioning System ◽  
Position Information ◽  
Vehicle Monitoring ◽  
Security Applications ◽  
Global Positioning ◽  
Gps Antenna

This paper deals with research and development of Vehicle Monitoring and Security System which is GPS based vehicle tracking system used for security applications. It uses two main underlying concepts. These are GPS (Global Positioning System) and GSM (Global System for Mobile Communication). The main application of this system is tracking the vehicle to which the GPS is connected, giving the information about its position whenever required and for the security of each person travelling by the vehicle. This is done with the help of the GPS satellite and the GPS module attached to the vehicle which needs to be tracked. The GPS antenna present in the GPS module receives the information from the GPS satellite in NMEA (National Marine Electronics Association) format and thus it reveals the position information. This information got from the GPS antenna has to be sent to the Base station wherein it is decoded. For this GSM module is used which has an antenna too. Thus we have at the Base station; the complete data about the vehicle. Along with tracking the vehicle, the system is used for security applications as well. Each passenger/employee will have an ID of their own and will be using a remote containing key for Entry, Exit and Panic. The Panic button is used by the driver or the passenger so as to alert the concerned of emergency conditions. On pressing this button, an alarm will be activated which will help the passenger/employee in emergencies and keep them secure throughout the journey. The vehicle can also be immobilized remotely.

scholarly journals A Combined Antijamming and Antispoofing Algorithm for GPS Arrays

2019 ◽  
Vol 2019 ◽  
pp. 1-9
Author(s):  
Qiong Yang ◽  
Yi Zhang ◽  
Chengkai Tang ◽  
Jie Lian
Keyword(s):  
Antenna Array ◽  
Global Positioning System ◽  
Positioning System ◽  
Gps Receiver ◽  
Subspace Projection ◽  
Timing Information ◽  
Attack Scenario ◽  
Global Positioning ◽  
Direction Diagram ◽  
Satellite Signal

The Global Positioning System (GPS), with its accurate positioning and timing information, has become a commonly used navigation instrument for many applications. However, it is susceptible to intentional interference such as jamming and spoofing. The conventional antijamming GPS receiver fails to work in a combined jamming and spoofing attack scenario. To solve the problem, a combined antijamming and antispoofing algorithm for a GPS receiver based on an antenna array is proposed. In this method, the jamming is eliminated by subspace projection, and then a compressed sensing framework is adopted to obtain the direction of arrival (DOA) of the despreading satellite navigation signal and detect the spoofing signal. According to the DOA of the authentic and spoofing signals, the receiver uses adaptive multibeamforming to concurrently achieve the undistorted reception of the authentic satellite signal and the suppression of the spoofing. We analyse three aspects of algorithmic performance: the antenna array direction diagram, the spoofing detection and the acquisition results. The simulation results and their analysis preliminarily show that the proposed method can detect and suppress GPS jamming and spoofing effectively.

scholarly journals Circularly polarized microstrip patch antenna array for GPS application

2019 ◽  
Vol 15 (2) ◽  
pp. 920
Author(s):  
Taher Khalifa ◽  
N. M. Sahar ◽  
N. Ramli ◽  
M. T. Islam
Keyword(s):  
Antenna Array ◽  
Global Positioning System ◽  
Wireless Systems ◽  
High Gain ◽  
Positioning System ◽  
Circularly Polarized ◽  
Feed Line ◽  
Microstrip Patch ◽  
Global Positioning ◽  
Gps System

<span>The 12 elements antenna array for GPS system having high gain with circular polarization is presented in this paper. The circularly polarized antenna is very suitable for the use of various wireless systems such as Global Positioning System with operating frequency is 1.27 GHz with AR is less than 3 dB between 82˚ and 140˚.The antenna consists of twelve main radiation patches connected in parallel. The antennas array are designed on the Rogers RT5880 substrate with a dielectric constant (εr) of 2.2 and thickness is 0.787 mm. The antenna is excited with an inset feed line and it operates in L-band with a resonant frequency of 1.27 GHz.</span>

Aplikasi Pemosisi Lokal Berbasis Android Dengan Menggunakan GPS

INTI TALAFA ◽  
2018 ◽  
Vol 8 (2) ◽  
Author(s):  
Yaman Khaeruzzaman
Keyword(s):  
Global Positioning System ◽  
Positioning System ◽  
Database Server ◽  
Global Positioning

Seiring dengan pesatnya kemajuan teknologi saat ini, kebutuhan manusia menjadi lebih beragam, termasuk kebutuhan akan informasi. Tidak hanya media informasinya yang semakin beragam, jenis informasi yang dibutuhkan juga semakin beragam, salah satunya adalah kebutuhan informasi akan posisi kita terhadap lingkungan sekitar. Untuk memenuhi kebutuhan itu sebuah sistem pemosisi diciptakan. Sistem pemosisi yang banyak digunakan saat ini cenderung berfokus pada lingkup ruang yang besar (global) padahal, dalam lingkup ruang yang lebih kecil (lokal) sebuah sistem pemosisi juga diperlukan, seperti di ruang-ruang terbuka umum (taman atau kebun), ataupun dalam sebuah bangunan. Sistem pemosisi lokal yang ada saat ini sering kali membutuhkan infrastruktur yang mahal dalam pembangunannya. Aplikasi Pemosisi Lokal Berbasis Android dengan Menggunakan GPS ini adalah sebuah aplikasi yang dibangun untuk memenuhi kebutuhan pengguna akan informasi lokasi dan posisi mereka terhadap lingkungan di sekitarnya dalam lingkup ruang yang lebih kecil (lokal) dengan memanfaatkan perangkat GPS (Global Positioning System) yang telah tertanam dalam perangkat smartphone Android agar infrastruktur yang dibutuhkan lebih efisien. Dalam implementasinya, Aplikasi Pemosisi Lokal ini bertindak sebagai klien dengan dukungan sebuah Database Server yang berfungsi sebagai media penyimpanan data serta sumber referensi informasi yang dapat diakses melalui jaringan internet sehingga tercipta sebuah sistem yang terintegrasi secara global. Kata kunci: aplikasi, informasi, pemosisi, GPS.

The Distribution of Hospitality Services in Uyo Urban, Nigeria

2018 ◽  
pp. 137-150
Author(s):  
Violet Bassey Eneyo
Keyword(s):  
Data Collection ◽  
Global Positioning System ◽  
Central Area ◽  
Positioning System ◽  
Nearest Neighbour ◽  
Global Positioning ◽  
Neighbour Analysis

This paper examines the distribution of hospitality services in Uyo Urban, Nigeria. GIS method was the primary tool used for data collection. A global positioning system (GPS) Garmin 60 model was used in tracking the location of 102 hospitality services in the study area. One hypothesis was stated and tested using the nearest neighbour analysis. The finding shows evidence of clustering of the various hospitality services. The tested hypothesis further indicated that hospitality services clustered in areas that guarantee a sustainable level of patronage to maximize profit. Thus, the hospitality services clustered in selected streets in the metropolis while limited numbers were found outside the city’s central area.

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