Defense Science Board Task Force on The Future of the Global Positioning System

2005 ◽  
Author(s):  
DEFENSE SCIENCE BOARD WASHINGTON DC
Keyword(s):  
Global Positioning System ◽  
Task Force ◽  
Positioning System ◽  
Global Positioning ◽  
The Future

Marine Navigation with NAVSTAR/Global Positioning System (GPS) Today and in the Future

1982 ◽  
Vol 36 (1) ◽  
pp. 9-28 ◽  
Author(s):  
David E. Wells ◽  
Demitris Delikaraoglou ◽  
Petr Vaníč
Keyword(s):  
Global Positioning System ◽  
Navigation System ◽  
Positioning System ◽  
Eastern Canada ◽  
Satellite Navigation System ◽  
Satellite Constellation ◽  
Global Positioning ◽  
The Future ◽  
Gps System ◽  
Marine Navigation

The principles of operation of the NAVSTAR/GPS system are described within the context of the more familiar shore-based radionavigation systems, and of the Transit satellite navigation system. The present GPS satellite constellation of up to six prototype satellites, and the eventual constellation of up to 18 operational satellites are described. Some details of GPS signal structure, receiver operation, and error models are given. Results of our simulations of 1980 GPS marine navigation performance off eastern Canada are presented. These indicate GPS is presently capable of providing 150 m or better real-time positioning for about 11 hours a day in this region. GPS performance in the future is discussed.

scholarly journals The global positioning system, relativity, and extraterrestrial navigation

2009 ◽  
Vol 5 (S261) ◽  
pp. 22-30 ◽  
Author(s):  
Neil Ashby ◽  
Robert A. Nelson
Keyword(s):  
Global Positioning System ◽  
Navigation System ◽  
World Wide ◽  
Relativistic Effects ◽  
Atomic Clocks ◽  
Positioning System ◽  
Navigation Systems ◽  
Time Transfer ◽  
Global Positioning ◽  
The Future

AbstractRelativistic effects play an important role in the performance of the Global Positioning System (GPS) and in world-wide time comparisons. The GPS has provided a model for algorithms that take relativistic effects into account. In the future exploration of space, analogous considerations will be necessary for the dissemination of time and for navigation. We discuss relativistic effects that are important for a navigation system such as at Mars. We describe relativistic principles and effects that are essential for navigation systems, and apply them to navigation satellites carrying atomic clocks in orbit about Mars, and time transfer between Mars and Earth. It is shown that, as in the GPS, relativistic effects are not negligible.

scholarly journals Accuracy Analysis of GNSS (GPS, GLONASS and BEIDOU) Obsevation For Positioning

2019 ◽  
Vol 94 ◽  
pp. 01019
Author(s):  
Khomsin ◽  
Ira Mutiara Anjasmara ◽  
Danar Guruh Pratomo ◽  
Wahyu Ristanto
Keyword(s):  
Global Positioning System ◽  
Global Navigation Satellite System ◽  
Satellite System ◽  
Positioning System ◽  
Navigation Satellite ◽  
Accuracy Analysis ◽  
Global Positioning ◽  
The Future ◽  
Global Navigation ◽  
Global Navigation Satellite

Global Navigation Satellite System called GNSS is a term used for the entire global navigation that already operate or are in the planning for the future. Some of the satellite that can be used are GPS (Global Positioning System) operated by USA, GLONASS (Global Navigation Satellite System) operated by Rusia and BeiDou/Compass operated by China. Many errors and biases that occur when measuring with GNSS in the field. Theoritically, there are some errors and biases that can be eliminated or subtracted by strength of satellite geometric. One factor to get a good satellite geometric is to increase the number of satellites received by receiver. In general, the more number of satellites received, the better the geometric satellites received by receivers. The development of receiver technology is currently able to capture GPS, GLONASS and BeiDou signals at one time. Thus the receiver can receive many satellites and finally the shape of geometric satellite becomes better. HiTarget V30 is one of the latest GNSS technology on the market today. This receiver is capable of receiving GPS signals, GLONASS and BeiDou at one time of observation. This research will compare the accuracy of positioning using GPS, GLONASS and BeiDou satellite.

GPS Satellite Advancements and its Future

2020 ◽  
Vol 07 (01) ◽  
pp. 1-4
Author(s):  
Gopal Kochhar ◽  
Keyword(s):  
Comparative Study ◽  
Global Positioning System ◽  
Positioning System ◽  
Tracking Systems ◽  
Gps Satellites ◽  
Global Positioning ◽  
The Future ◽  
The Comparative Study

This paper gives an brief introduction of global positioning system, its generations, the future and progressions that are attained by the GPS and tracking systems. The latest usage and the comparative study of the GPS satellites that are launched and are operational till date.

A Comparison of Two Head up Display Formats Used to Fly Curved Instrument Approaches

1995 ◽  
Vol 39 (1) ◽  
pp. 1-4 ◽  
Author(s):  
John M. Reising ◽  
Kristen K. Liggett ◽  
Thomas J. Solz ◽  
David C. Hartsock
Keyword(s):  
Root Mean Square ◽  
Global Positioning System ◽  
Positioning System ◽  
Mean Square ◽  
Present Position ◽  
Pilot Performance ◽  
Significant Difference ◽  
Global Positioning ◽  
The Future ◽  
The Military

With the advent of the Global Positioning System (GPS), pilots will be able to fly curved instrument approaches. Since current head up display (HUD) symbology was not specifically designed to present this curved information, a study was conducted to determine the most effective set of HUD symbology to assist pilots in flying curved approaches. The military standard HUD symbology was compared with the Pathway HUD format. Dependent measures collected for the comparison were root mean square (RMS) course deviations, RMS altitude deviations, and RMS airspeed deviations. Results showed that there was a significant difference in pilot performance for all dependent measures – subjects performed better using the Pathway HUD format than the standard HUD symbology in all cases. Pilots comments attributed the advantage of flying the Pathway HUD format to the fact that they could see their route in the form of a highway from their present position to a point 45 seconds into the future. This allowed them to anticipate necessary control movements.

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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