Author: United States. National Bureau of StandardsPublisher:
ISBN:
Category :
Languages : en
Pages : 121
Book Description
THEORETICAL EFFECT OF LONG TERM HF RADIO PROPAGATION VARIATION ON THE MERCURY GROUND COMMUNICATION SYSTEM
Author: United States. National Bureau of StandardsPublisher:
ISBN:
Category :
Languages : en
Pages : 121
Book Description
MARCH 1963 RADIO PROPAGATION PREDICTIONS FOR PROJECT MERCURY HIGH FREQUENCY GROUND COMMUNICATIONS SYSTEMS
Author: Boulder Laboratories (U.S.)Publisher:
ISBN:
Category :
Languages : en
Pages : 112
Book Description
Long Distance Propagation of HF Radio Waves
Author: Alexander V. GurevichPublisher: Springer
ISBN:
Category : Science
Languages : en
Pages : 368
Book Description
The study of very long-distance and around-the-world propagation of HF radio waves becomes more urgent in connection with the problems of long distance ground-based radio communications, communications with space crafts and satellites, satellite-to-satellite communications, around-the-world radar scanning, around-the-world sounding of the ionosphere, etc. At pre sent, these investigations have acquired particular interest because transmit ters which make it possible to intentionally modify the ionospheric properties by powerful radio waves have become available. In the case of radio wave propagation over comparatively small distances (about 3000 - 5000 km, one - two hops), in a first approximation, the iono sphere can be considered homogeneous in the horizontal direction. The radio wave propagation theory in a horizontally-homogeneous, i. e. , spherically symmetric ionosphere was developed with sufficient completeness as early as in the 1920-1940's by Appleton, Ratcliffe, Beynon, Booker, Martyn, and others. This theory is presented in detail in the well-known monographs by Ginzburg (1967), Bremmer (1946), and Budden (1961). Based on this theory, detailed methods for the calculation of radio paths, determination of field amplitude, and interpretation of vertical and oblique ionograms have been developed. All these methods are well-known and widely used in practice, see monographs by Al'pert (1974), Shchukin (1940), and Davies (1969). An altogether different situation takes place in the case of very long-dis tance multihop and around-the-world propagation.
Long Distance Propagation of HF Radio Waves
Author: Alexander V. GurevichPublisher: Springer
ISBN: 9783642702495
Category : Science
Languages : en
Pages : 0
Book Description
The study of very long-distance and around-the-world propagation of HF radio waves becomes more urgent in connection with the problems of long distance ground-based radio communications, communications with space crafts and satellites, satellite-to-satellite communications, around-the-world radar scanning, around-the-world sounding of the ionosphere, etc. At pre sent, these investigations have acquired particular interest because transmit ters which make it possible to intentionally modify the ionospheric properties by powerful radio waves have become available. In the case of radio wave propagation over comparatively small distances (about 3000 - 5000 km, one - two hops), in a first approximation, the iono sphere can be considered homogeneous in the horizontal direction. The radio wave propagation theory in a horizontally-homogeneous, i. e. , spherically symmetric ionosphere was developed with sufficient completeness as early as in the 1920-1940's by Appleton, Ratcliffe, Beynon, Booker, Martyn, and others. This theory is presented in detail in the well-known monographs by Ginzburg (1967), Bremmer (1946), and Budden (1961). Based on this theory, detailed methods for the calculation of radio paths, determination of field amplitude, and interpretation of vertical and oblique ionograms have been developed. All these methods are well-known and widely used in practice, see monographs by Al'pert (1974), Shchukin (1940), and Davies (1969). An altogether different situation takes place in the case of very long-dis tance multihop and around-the-world propagation.
APRIL 1963 RADIO PROPAGATION PREDICTIONS FOR PROJECT MERCURY HIGH FREQUENCY GROUND COMMUNICATIONS SYSTEM
Author: Boulder Laboratories (U.S.)Publisher:
ISBN:
Category :
Languages : en
Pages : 112
Book Description
HF Communications Systems and Technology
Author: John M. GoodmanPublisher: Springer
ISBN:
Category : Juvenile Nonfiction
Languages : en
Pages : 664
Book Description
Communications engineers, ionospheric scientists, engineers and scientists in DoD HF projects, and DoD managers will use this source to gain a working understanding of the basic theory involved in HF radiowave propagation and uses of HF technology today.
FEBRUARY 1963 RADIO PROPAGATION PREDICTIONS FOR PROJECT MERCURY HIGH FREQUENCY GROUND COMMUNICATIONS SYSTEM
Author: Boulder Laboratories (U.S.)Publisher:
ISBN:
Category :
Languages : en
Pages : 94
Book Description
MAY 63 HIGH FREQUENCY RADIO PROPAGATION PREDICTIONS FOR THE GROUND COMMUNICATIONS SYSTEM OF PROJECT MERCURY MANNED FLIGHT AND SCIENTIFIC SATELLITE PROGRAMS
Author: Boulder Laboratories (U.S.)Publisher:
ISBN:
Category :
Languages : en
Pages : 104
Book Description
Propagation Impact on Modern HF Communications System Design
Author: North Atlantic Treaty Organization. Advisory Group for Aerospace Research and DevelopmentPublisher:
ISBN:
Category : Astronautics
Languages : en
Pages : 202
Book Description
Author: