A Survey of Navigation Systems and Instrument Aids

1950 ◽  
Vol 3 (2) ◽  
pp. 141-155
Author(s):  
D. E. Adams ◽  
A. M. Uttley

An abbreviated version of a paper read before a joint meeting of the Institute and the Royal Aeronautical Society.The usefulness of a particular aircraft may well depend upon the availability or simultaneous development of equipment. Safe, reliable, economic and speedy operation in the civil field may rest, for instance, on facilities which enable all-weather operation to be undertaken—including navigation, traffic control, approach and landing facilities. Military operations, even more directly, will be determined by the instrument aids available.

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.


1994 ◽  
Vol 27 (12) ◽  
pp. 893-898
Author(s):  
A. Boulmakoul ◽  
S. Sellam

2013 ◽  
Vol 13 (4) ◽  
pp. 18-32
Author(s):  
Krasimira Stoilova ◽  
Todor Stoilov ◽  
Konstantin Nikolov

Abstract The operation of a complex system like a transportation network is considered with respect to the opportunities to identify the application of autonomic properties. The autonomic features of self-properties are analyzed. A multilevel approach is suggested for the formalization of the transport operation. The integration of relevant optimization problems is also considered in the framework of a multilevel, hierarchical scheme of control. The application of bi-level formalism in the transportation systems gives quantitative assessment of the control processes in the traffic control system. The multilevel approach allows the increase of the solution space of a complex optimization problem with an additional traffic control variable, which in the classical optimal formalization participates with fixed parameters in the optimization problem. The benefit of the multilevel control approach is tested in a real network of crossroad sections.


1961 ◽  
Vol 65 (606) ◽  
pp. 399-400
Author(s):  
J. B. Russell

The basic objective of air traffic control in military flying is, of course, the same as in any other flying; to enable all aircraft to fly safely throughout each flight with the maximum freedom to attain their purpose efficiently. In practice, this necessarily involves the imposition of conditions and restrictions, and it is one of the main aims in the development of air traffic services to increase both the safety and flexibility of aircraft operation with the minimum restrictions. In progressing this we fully recognise the needs of civil aviation and, contrary to some public misconceptions of civil/military conflict in air traffic control, a joint approach is made at all levels to resolve A.T.C. requirements.


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