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.

scholarly journals LIDAR Self Driving Car

2021 ◽  
Vol 9 (10) ◽  
pp. 1334-1337
Author(s):  
Soham Phansekar
Keyword(s):  
Global Positioning System ◽  
Electromagnetic Waves ◽  
Traffic Accidents ◽  
Positioning System ◽  
Automated Driving ◽  
Sensing Technology ◽  
Gps Satellites ◽  
Global Positioning ◽  
Total Travel Time ◽  
Car Navigation System

Abstract: Increasing population is the major issue of transportation nowadays. People who live and work in the major cities of the world are faced with increasing levels of congestion, delays, total travel time, costs, frustration, accidents and loss of life. The objective of this project is to help prevent traffic accidents and save people’s time by fundamentally changing car use. The system would have sensors to detect the obstacles and to be able to react according to their position. In this project we have developed an automated driving system which drives the car automatically. We have developed a technology for cars that drives it automatically using LIDAR. This car is capable of sensing the surroundings, navigating and fulfilling the human transportation capabilities without any human input. It continuously tracks the surrounding and if any obstacle is detected vehicle senses and moves around and avoids the obstacle. An autonomous car navigation system based on Global Positioning System (GPS) is a new and promising technology, which uses real time geographical data received from several GPS satellites to calculate longitude, latitude, speed and course to help navigate a car. As we know the development of gps is more improved now the accuracy of gps we can see centimetre also so Like for our car to go at specific inputted location we use this gps technology.Lidar is used for sensing the surroundings. Like radar, lidar is an active remote sensing technology but instead of using radio or microwaves it uses electromagnetic waves. Keywords: Congestion, Traffic Accident, LIDAR sensor, Global Positioning System, Electromagnetic waves

scholarly journals Column water vapor determination in night period with a lunar photometer prototype

2013 ◽  
Vol 6 (1) ◽  
pp. 767-793
Author(s):  
A. Barreto ◽  
E. Cuevas ◽  
B. Damiri ◽  
P. M. Romero ◽  
F. Almansa
Keyword(s):  
Water Vapor ◽  
Comparative Study ◽  
Global Positioning System ◽  
High Mountain ◽  
Positioning System ◽  
Gps Receiver ◽  
Preliminary Results ◽  
Global Positioning ◽  
Lc Filter ◽  
Night Period

Abstract. In this paper we present the preliminary results of atmospheric column integrated water vapor (PWV) obtained with a new Lunar Cimel photometer (LC) at the high mountain Izaña Observatory in the period July–August, 2011. We have compared nocturnal PWV from LC with PWV from a Global Positioning System (GPS) receiver and nighttime radiosondes (RS92). LC data have been calibrated using the Lunar Langley Method (LLM). We complemented this comparative study using quasi-simultaneous daytime PWV from Cimel AERONET (CA), GPS and RS92. Comparison of daytime PWV from CA shows differences against GPS and RS92 up to 0.18 cm. Two different filters, with and approximate bandwidth of 10 nm and central wavelengths at 938 nm (Filter#1) and 937 nm (Filter#2), were mounted into the LC. Filter#1 is currently used in operational AERONET sunphotometers. PWV obtained with LC-Filter#1 showed an overestimation above 0.18 and 0.25 cm compared to GPS and RS92, respectively, meanwhile Filter#2, with a reduced out-of-band radiation, showed very low differences compared with the same references (≤0.03 cm). These results demonstrate the ability of the new lunar photometer to obtain accurate and continuous PWV measurements at night in addition to the notably influence of the filter's transmissivity response on PWV determination at nighttime. The use of enhanced bandpass filters in lunar photometry, which is affected by more important inaccuracies than sun-photometry, is necessary to infer PWV with similar precision than AERONET.

scholarly journals Algorithms of Position and Velocity Estimation in GPS Receivers

2016 ◽  
Vol 23 (1) ◽  
pp. 53-68 ◽  
Author(s):  
Piotr Kaniewski ◽  
Rafał Gil ◽  
Stanisław Konatowski
Keyword(s):  
Global Positioning System ◽  
Velocity Estimation ◽  
Frame Of Reference ◽  
Positioning System ◽  
Gps Receivers ◽  
Extended Kalman Filters ◽  
Navigation Solution ◽  
Gps Satellites ◽  
Global Positioning ◽  
Simulation Results

Abstract Processing of signals in Global Positioning System (GPS) receivers includes numerous signal and data operations leading to calculation of coordinates and velocities of satellites in global Earth-Centered Earth-Fixed (ECEF) frame of reference as well as pseudoranges and delta-ranges between the user and all the tracked GPS satellites. Further processing of these data consists in estimation of the user’s position, velocity and time (PVT) and nowadays it is usually realized by means of an Extended Kalman Filters (EKF). The choice of measuring data processed by the Kalman filter significantly influences the accuracy of navigation solution. In simpler GPS receivers, the estimation of user’s position and velocity is based on pseudoranges only, whereas in more advanced ones delta-ranges are also applied. The paper describes both possible solutions and compares the accuracy of estimation of the user’s position and velocity in both cases. The comparison is based on simulation results, which are included in the paper.

Global Tracking Systems in the Australian Interstate Trucking Industry

2013 ◽  
pp. 226-234
Author(s):  
Jann Karp
Keyword(s):  
Data Collection ◽  
Global Positioning System ◽  
Truck Drivers ◽  
Trucking Industry ◽  
Positioning System ◽  
Tracking Systems ◽  
Global Tracking ◽  
Technological Advances ◽  
Global Positioning ◽  
Tracking Devices

Technology, trucking, and the surveillance of workers in the workplace: helpful or a hindrance? Technological advances are produced by the creative ideas individuals: these ideas then become selling items in their own right. Do tracking devices effectively regulate traffic breaches and criminality within the trucking industry? The data collection was conducted in the field while the authors rode as a passenger with truck drivers on long-haul trips. The complexities of tracking systems became more apparent as the authors listened to the men and placed their narratives in a broader context for a broader audience. The results of the work indicated that the Global Positioning System (GPS) has a role in the management of the industry as a logistics tool, but that there are limitations to the technology. The drivers use the devices and also feel the oppressive oversight when managers use the data as a disciplinary tool.

scholarly journals A Comparative Study on Digital Encryption Algorithms

2018 ◽  
pp. 371-375
Author(s):  
Harsh Shah ◽  
Vipul Sharma ◽  
Dharmik Panchal ◽  
Sumeet Patel ◽  
Dr. Sheshang Degadwal
Keyword(s):  
Comparative Study ◽  
Global Positioning System ◽  
Cell Phone ◽  
Positioning System ◽  
Verbal Instructions ◽  
Global Positioning ◽  
Encryption Algorithms

This is a project to help someone with advanced Alzheimer. It is a GPS (Global Positioning System) unit for Alzheimer patients. Alzheimer patients often get lost, or wander off. They forget familiar land marks. It works like this: The patient carries a combination cell phone and GPS unit on a necklace or lag band. When the patient touches the unit, or holds it, it starts giving verbal instructions on how to walk home, repeating as necessary. If the patient is too far from home to walk, it phones home and reports the location of the patient, using street names, as well as latitude and longitude. Note that there are no buttons to push and nothing to look at on the unit. It is activated just by touching it.

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