scholarly journals Uma investigação em uma base de dados geoespacial com uso de técnicas de Big Data

Author(s):  
Jessica Viana ◽  
César Silva ◽  
Melissa Zanatta ◽  
Bruno César Vani ◽  
Linnyer Ruiz

In global satellite navigation systems, a large volume of data is produced during the monitoring of radio waves propagated in the ionosphere. This monitoring is based on index calculations from data obtained continuously through receivers. This paper presents an investigation, using Big Data techniques, to explore the data obtained by the receivers, in order to identify the moment when the satellite signal can be obtained with better quality.

Author(s):  
M. K. Savkin ◽  
A. R. Filatov

Nowadays majority of navigation methods, used in unmanned flying vehicles, are based on satellite navigation systems, such as GPS or GLONASS, or are amplified with them. But hardware, that uses such systems, can’t work in difficult conditions, for example causes by relief: with insufficient number of satellites or at low satellite signal. Satellite navigation systems are vulnerable for methods of radio defense: satellite signal can be deadened or replaced. That is why such systems usage is unacceptable while critical missions during military operations, emergency or reconnaissance. The article briefly describes components used for building alternative satellite-free navigation systems for flying vehicles. For each component its purpose and brief description of working principle are given, advantages and disadvantages are considered.


2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
Jianjun Zhang ◽  
Jing Li

Based on the characteristics of big data, the meaning of fog computing, and the spatiotemporal data characteristics of satellite navigation systems, the concept, connotation, and characteristics of Beidou big data were put forward. The Beidou big data processing process was sorted out, the preliminary architecture of the Beidou big data system with fog computing function was built, and finally the fog computing based Beidou big data system was proposed. Big data research content provides technical support for further tapping the value of Beidou satellite navigation system data and realizing the incremental development of satellite navigation systems.


2001 ◽  
Vol 56 (3) ◽  
pp. 13
Author(s):  
E. G. Kharin ◽  
V. G. Maslennikov ◽  
N. B. Vavilova ◽  
I. A. Kopylov ◽  
A. Ch. Staroverov

1994 ◽  
Vol 47 (3) ◽  
pp. 295-304
Author(s):  
Hubert Stich ◽  
Walter Blanchard ◽  
Wolfgang Lechner ◽  
Detlef Kayser ◽  
Henry Gaillard

This paper and the following five papers were presented at the DSNS-94 Conference organized by the Institute from 18–22 April in London. The full proceedings, including some 78 papers, are available from the Director, price £40 (exc. P&p).


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