Author: Ursel Ralph Embry
Publisher:
ISBN:
Category : Radio astronomy
Languages : en
Pages : 76
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Book Description
The possibility of detecting communication systems which use signals scattered by meteor trails, and intercepting information passed over such systems is discussed. To obtain the statistical data required on the fraction of meteor trails that scatter energy to an intercept location, and the fraction of transmitted messages that can be intercepted, a computation program is formulated. For a specified distribution of meteor sources, the fraction of the meteor trails that will scatter a signal to any point in a large area about the transmitter, and the fraction of message fragments received that can be intercepted at any point in the region about a receiver location, can be readily found. The computed results for a uniform distribution of meteor sources across the sky are displayed graphically. An example is worked out showing that the data can be used to estimate the performance of a meteor-scatter communications link. Sample computations on the probability of detecting the operation of a meteor-burst communications system are carried out. Finding the locations of transmitters using meteor-scatter signals, recognition of operating characteristics, and the interception of information passed over such links are also discussed. (Author).
Author:
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ISBN:
Category : Bibliographical literature
Languages : en
Pages : 914
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Book Description
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 406
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Author: Stanford University Stanford Electronics Laboratories
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ISBN:
Category :
Languages : en
Pages : 64
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Book Description
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 518
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Book Description
Author: Meteorological & geoastrophysical abstracts
Publisher:
ISBN:
Category : Meteor trails
Languages : en
Pages : 152
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Book Description
This bibliography constitutes the second in a series of four or five being prepared by Meteorological Abstracts for the Boulder Laboratories of the National bureau of Standards. The general subject area of these compilations in propagation of electromagnetic (radio) waves in the atmosphere. The present bibliography consists of 368 abstracts on meteor trail propagation, arranged alphabetically by author and including articles dating from the earliest studies by Nagaoka (B-245) in 1929 on the effect of meteoric ionization on radio communications, to the numerous papers reflecting the recent emphasis on meteor burst communication. No material published after 1960 has been included.
Author:
Publisher:
ISBN:
Category : Physical instruments
Languages : en
Pages : 144
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Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 182
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Author:
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ISBN:
Category : Cosmic physics
Languages : en
Pages : 1714
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Book Description
Author: H. George Hagn
Publisher:
ISBN:
Category : Ionosphere
Languages : en
Pages : 392
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Book Description
A survey of the literature pertaining to backscatter is presented in bibliographical form. Authors' abstracts have been included whenever they were available and appeared adequate. The survey is intended to cover the period from the inception of the study of ionospheric backscatter (about 1928) through 1960. This survey deals mainly with ionospherically propagated backscatter at HF. Some work on terrain returnAND ON DIRECT BACKSCATTER FROM DISCRETE OBJECTS IS PRESENTED, AND THE MAJOR EARLY PAPERS ON INCOHERENT (exospheric) scatter from electrons have been included. Material dealing with troposcatter, ionoscatter, forward propagation at HF, and meteoric and auroral echoes has, in general, been excluded. (Author).
