Assessment of Ionosphere Spatial Decorrelation for Global Positioning System-Based Aircraft Landing Systems

2007 ◽  
Vol 44 (5) ◽  
pp. 1662-1669 ◽  
Author(s):  
Jiyun Lee ◽  
Sam Pullen ◽  
Seebany Datta-Barua ◽  
Per Enge
Keyword(s):  
Global Positioning System ◽  
Positioning System ◽  
Aircraft Landing ◽  
Global Positioning

Evaluation of Pathway Symbology Used to Land from Curved Approaches with Varying Visibility Conditions

1998 ◽  
Vol 42 (1) ◽  
pp. 1-5 ◽  
Author(s):  
John M. Reising ◽  
Kristen K. Liggett ◽  
Todd W. Kustra ◽  
Michael P. Snow ◽  
David C. Hartsock ◽  
...  
Keyword(s):  
Analysis Of Variance ◽  
Air Force ◽  
Global Positioning System ◽  
Weather Conditions ◽  
Positioning System ◽  
System Technology ◽  
Military Aircraft ◽  
Aircraft Landing ◽  
Global Positioning ◽  
Touchdown Point

Global Positioning System technology has the potential to revolutionize both commercial and military aircraft landing procedures. It will enable pilots to fly complex, curved approaches rather than the more simple straight-in approaches necessitated by the Instrument Landing System used at most large airports. To complement this technology, Head-Up Display pathway symbology was developed for use in the aircraft to help pilots stay on course during these complex landings. Thirteen Air Force pilots used this pathway symbology in a simulator to land under Visual Meteorological, Partial Instrument Meteorological and Full Instrument Meteorological visibility conditions. Deviations from commanded flight path, as well as lateral and longitudinal deviations from a desired runway touchdown point, were measured. Results indicated that landing performance was acceptable for all pilots and functionally equivalent in all weather conditions. Results of this study suggest that pathway symbology could provide the cues necessary to successfully fly complex, curved approaches to landing. In addition, the merits of using Equivalency Analysis, rather than traditional Analysis of Variance in testing for performance differences is discussed.

Monitoring Global Positioning System Satellite Orbit Errors for Aircraft Landing Systems

2006 ◽  
Vol 43 (3) ◽  
pp. 799-808 ◽  
Author(s):  
Jiyun Lee ◽  
Sam Pullen ◽  
Per Enge ◽  
Boris Pervan ◽  
Livio Gratton
Keyword(s):  
Global Positioning System ◽  
Satellite Orbit ◽  
Positioning System ◽  
Aircraft Landing ◽  
Global Positioning ◽  
Orbit Errors

Ionospheric Threat Parameterization for Local Area Global-Positioning-System-Based Aircraft Landing Systems

2010 ◽  
Vol 47 (4) ◽  
pp. 1141-1151 ◽  
Author(s):  
Seebany Datta-Barua ◽  
Jiyun Lee ◽  
Sam Pullen ◽  
Ming Luo ◽  
Alexandru Ene ◽  
...  
Keyword(s):  
Global Positioning System ◽  
Local Area ◽  
Positioning System ◽  
Aircraft Landing ◽  
Global Positioning

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.

Sign in / Sign up

Export Citation Format

Share Document