Direction-Measuring Short-Range Navigation Systems

2019 ◽  
pp. 53-88
Author(s):  
Oleg Nicolaevich Skrypnik
Keyword(s):  
Short Range ◽  
Navigation Systems

scholarly journals INDOOR NAVIGATION ASSISTANCE SYSTEM USING BLUETOOTH

2016 ◽  
pp. 44-45
Author(s):  
APURVA MEHTA ◽  
D. D. PUKALE ◽  
RADHIKA BHAGAT ◽  
RUJAL SHAH
Keyword(s):  
Short Range ◽  
Low Cost ◽  
Indoor Navigation ◽  
Assistance System ◽  
Navigation Systems ◽  
Positioning Systems ◽  
Navigation Assistance ◽  
The Past ◽  
Current Location ◽  
Global Positioning

In the past few years, a number of ideas have been proposed for indoor navigation systems. These ideas were not as widely implemented as outdoor positioning systems like GPS(Global Positioning Systems). We propose an indoor navigation assistance system using Bluetooth which is low cost and feasible to use in daily life. Our system enables users with handheld mobile devices to steer with ease through the indoor premises using the short range radio frequencies of Bluetooth. It also establishes user’s current location and the various paths leading to the destination. Dijkstra’s algorithm is used to determine the shortest path from the source to the required destination.

Short-Range Navigation Systems

2019 ◽  
pp. 31-42
Author(s):  
Sauta O.I. ◽  
Shatrakov A.Y. ◽  
Shatrakov Y.G. ◽  
Zavalishin O.I.
Keyword(s):  
Short Range ◽  
Navigation Systems

Area Navigation and the Associated Display Methods

1971 ◽  
Vol 24 (1) ◽  
pp. 105-120
Author(s):  
Karl E. Karwath
Keyword(s):  
Traffic Control ◽  
Navigation System ◽  
Air Traffic Control ◽  
Short Range ◽  
Air Traffic ◽  
Navigation Systems ◽  
Systematic Classification ◽  
Radio Navigation ◽  
Radio Navigation System ◽  
Point To Point

It seems appropriate first to define and explain the term Area Navigation that lately has almost become a slogan in discussions on short-range radio navigation aids. The term itself does not convey much because virtually any radio navigation system permits navigation in the area of coverage of the associated ground stations; for a systematic classification of navigation systems, the term Area Navigation (herein called ANAV) is unsatisfactory. It can be understood only in the context of air traffic control requirements. For a long while the requirements of short-range navigation systems were almost exclusively governed by the needs of air traffic control systems based on an airways concept. When during recent years A.T.C. methods became less associated with a fixed route structure, especially in the terminal area, the requirements to be met by a navigation system changed accordingly. There now appears to be a general trend for area navigation capability to become available as a substitute for a point-to-point navigation system.

A pulse microwave generator for short-range radar-location and radio navigation systems

2011 ◽  
Vol 54 (5) ◽  
pp. 705-708 ◽  
Author(s):  
A. A. Titov ◽  
V. P. Pushkarev ◽  
D. Yu. Pelyavin ◽  
I. V. Shukhlov
Keyword(s):  
Short Range ◽  
Navigation Systems ◽  
Microwave Generator ◽  
Radio Navigation ◽  
Pulse Microwave

scholarly journals Analyzing measurement errors for navigation parameters in onground short-range navigation systems based on pseudolites

2016 ◽  
Vol 155 ◽  
pp. 012016 ◽  
Author(s):  
Yu L Fateev ◽  
V N Ratuschnyak ◽  
I N Kartsan ◽  
V N Tyapkin ◽  
D D Dmitriev ◽  
...  
Keyword(s):  
Measurement Errors ◽  
Short Range ◽  
Navigation Systems

Domain coarsening by grain boundary migration in ordered Ni4Mo

1986 ◽  
Vol 44 ◽  
pp. 560-561
Author(s):  
K. Vasudevan ◽  
H. P. Kao ◽  
C. R. Brooks ◽  
E. E. Stansbury
Keyword(s):  
Grain Boundary ◽  
Grain Boundaries ◽  
Short Range ◽  
Boundary Migration ◽  
Grain Boundary Migration ◽  
Rapid Cooling ◽  
Temperature Range ◽  
Fee Structure ◽  
Domain Coarsening ◽  
Boundary Reaction

The Ni4Mo alloy has a short-range ordered fee structure (α) above 868°C, but transforms below this temperature to an ordered bet structure (β) by rearrangement of atoms on the fee lattice. The disordered α, retained by rapid cooling, can be ordered by appropriate aging below 868°C. Initially, very fine β domains in six different but crystallographically related variants form and grow in size on further aging. However, in the temperature range 600-775°C, a coarsening reaction begins at the former α grain boundaries and the alloy also coarsens by this mechanism. The purpose of this paper is to report on TEM observations showing the characteristics of this grain boundary reaction.

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