標題: Titlebook: Application of the Geometrical Theory of Diffraction to Terrestrial LF Radio Wave Propagation; R. Michael Jones Book 1968 Springer-Verlag [打印本頁] 作者: 清楚明確 時間: 2025-3-21 19:05
書目名稱Application of the Geometrical Theory of Diffraction to Terrestrial LF Radio Wave Propagation影響因子(影響力)
書目名稱Application of the Geometrical Theory of Diffraction to Terrestrial LF Radio Wave Propagation影響因子(影響力)學科排名
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書目名稱Application of the Geometrical Theory of Diffraction to Terrestrial LF Radio Wave Propagation網(wǎng)絡(luò)公開度學科排名
書目名稱Application of the Geometrical Theory of Diffraction to Terrestrial LF Radio Wave Propagation被引頻次
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作者: Conflict 時間: 2025-3-21 23:09
Application of the Geometrical Theory of Diffraction to Terrestrial LF Radio Wave Propagation作者: 持久 時間: 2025-3-22 02:15
Application of the Geometrical Theory of Diffraction to Terrestrial LF Radio Wave Propagation978-3-662-34679-2作者: 不利 時間: 2025-3-22 07:41
Lianying Zhang,Xiang Zhang,Teng Maodenwelle. Die Ausbreitung von LF-Radiowellen über eine r?umlich variable Ionosph?re kann dadurch bestimmt werden, da? für die Berechnung der Reflexion in der Ionosph?re ein “ray tracing” im komplexen Raum [JONES, 1968] und der Beugung an der Erde das GTD-Verfahren benutzt wird.作者: enflame 時間: 2025-3-22 09:33 作者: 盡忠 時間: 2025-3-22 13:23
The path of a surface diffracted ray,rays following the surface of the sphere are called surface diffracted rays. LEVY and KELLER [1959] infer from this picture of diffraction that a geometrical optical ray tangent to the sphere will excite a surface diffracted ray that will in turn shed rays tangentially as it follows the surface of the sphere.作者: incite 時間: 2025-3-22 18:52
https://doi.org/10.1007/978-1-4614-7010-6grees with the rigorous solution in the shadow region, including the effect that the sky waves decrease slower with distance than the groundwave. The GTD can be combined with ray tracing in complex space [JONES, 1968] to calculate propagation of LF radio waves in the presence of an ionosphere that varies arbitrarily with position.作者: 符合你規(guī)定 時間: 2025-3-22 21:54
Summary,grees with the rigorous solution in the shadow region, including the effect that the sky waves decrease slower with distance than the groundwave. The GTD can be combined with ray tracing in complex space [JONES, 1968] to calculate propagation of LF radio waves in the presence of an ionosphere that varies arbitrarily with position.作者: Ostrich 時間: 2025-3-23 02:37
Viga Rajiman,Hairul Nazirah Abdul Halim propagation [ WAIT, 1962, 1964 a, b, c; RUGG, 1967]. 4) Ray tracing in complex space [ JONES, 1968] can calculate propagation of LF radio waves in an ionosphere that varies arbitrarily in three dimensions, but does not take into account diffraction by the earth.作者: Esalate 時間: 2025-3-23 08:44 作者: Anticoagulants 時間: 2025-3-23 13:40 作者: 圣人 時間: 2025-3-23 17:21 作者: 強制性 時間: 2025-3-23 18:08 作者: Flavouring 時間: 2025-3-23 22:11
Viga Rajiman,Hairul Nazirah Abdul Halim ionosphere did not exist: 1) Analytical fullwave solutions exist only for particular geometries. The solution for a spherical geometry (i.e., a homogeneous, isotropic, concentric, sharply-bounded ionosphere) has been particularly well developed [WATSON, 1919; BREMMER, 1949; WAIT, 1960, 1961; JOHLER作者: debris 時間: 2025-3-24 06:23 作者: sigmoid-colon 時間: 2025-3-24 07:55 作者: DEAWL 時間: 2025-3-24 13:57
Viga Rajiman,Hairul Nazirah Abdul Halim distance ? from the point of shedding is proportional to the field strength of the groundwave at that point and depends on ? because of the phase integral contribution along ?, azimuthal focusing, and elevation focusing. To represent this proportionality, I define a shedding coefficient S(?) equal 作者: 磨坊 時間: 2025-3-24 15:03
https://doi.org/10.1007/978-1-4614-7010-6sented by a surface-diffracted ray at a complex height that is determined by the groundwave mode propagation constant. Groundwave excitation and shedding coefficients are evaluated by comparing the GTD solution for the field of a vertical Hertzian dipole over a homogeneous, isotropic, spherical eart作者: 犬儒主義者 時間: 2025-3-24 22:48
Lianying Zhang,Xiang Zhang,Teng Madie Erde zu berechnen. Jede Mode der Bodenwelle wird durch einen oberfl?chengebeugten Strahl in einer komplexen H?he, die durch die Ausbreitungskonstante der Bodenwelle bestimmt ist, dargestellt. Die Anregungs- und Abl?sungskoeffizient en der Bodenwelle werden durch Vergleich der GTD-L?sung mit der 作者: 頭腦冷靜 時間: 2025-3-25 02:29 作者: Camouflage 時間: 2025-3-25 06:34 作者: garrulous 時間: 2025-3-25 11:34
Excitation of the groundwave,de. At that point, a fraction of the incident field is converted to a groundwave mode, and the rest continues. Analagous to reflection and transmission coefficients, an excitation coefficient gives the fraction of the incident field that is converted to the groundwave mode.作者: 宣誓書 時間: 2025-3-25 12:54
https://doi.org/10.1007/978-3-662-34679-2Einkommensteuer; Einkommensteuerrichtlinien; Radio作者: 顯赫的人 時間: 2025-3-25 17:31
978-3-662-34408-8Springer-Verlag Berlin Heidelberg 1968作者: 彩色的蠟筆 時間: 2025-3-25 20:26 作者: Afflict 時間: 2025-3-26 03:09
Excimer Laser Projection Patterning,Although to date I have applied the GTD to only a concentric ionosphere, the basic importance of the method is its applicability to calculation of diffraction by the earth of radio waves reflected from an ionosphere that has realistic horizontal gradients.作者: compose 時間: 2025-3-26 05:32
Application of the GTD to a concentric, isotropic ionosphere,A concentric, isotropic ionosphere is probably the simplest example of an ionospherically reflected wave diffracted by the earth. It is also probably one of the few cases where application of the GTD gives an analytical solution. It has the further advantage that a rigorous solution exists for comparison.作者: 提升 時間: 2025-3-26 10:08
Discussion,Although to date I have applied the GTD to only a concentric ionosphere, the basic importance of the method is its applicability to calculation of diffraction by the earth of radio waves reflected from an ionosphere that has realistic horizontal gradients.作者: profligate 時間: 2025-3-26 15:08
Introduction, ionosphere did not exist: 1) Analytical fullwave solutions exist only for particular geometries. The solution for a spherical geometry (i.e., a homogeneous, isotropic, concentric, sharply-bounded ionosphere) has been particularly well developed [WATSON, 1919; BREMMER, 1949; WAIT, 1960, 1961; JOHLER作者: liaison 時間: 2025-3-26 20:25
The path of a surface diffracted ray, Fermat’s principle, they obtain a path of the type SPQO in figure 1, i.e., the path of a string stretched between the transmitter and receiver in contact with the sphere. They also obtain paths that wind around the sphere many times. The straight line segments are geometrical optical rays, and the 作者: Ingest 時間: 2025-3-26 21:11
Excitation of the groundwave,de. At that point, a fraction of the incident field is converted to a groundwave mode, and the rest continues. Analagous to reflection and transmission coefficients, an excitation coefficient gives the fraction of the incident field that is converted to the groundwave mode.作者: Discrete 時間: 2025-3-27 05:06
Radiation from the groundwave, distance ? from the point of shedding is proportional to the field strength of the groundwave at that point and depends on ? because of the phase integral contribution along ?, azimuthal focusing, and elevation focusing. To represent this proportionality, I define a shedding coefficient S(?) equal 作者: OTHER 時間: 2025-3-27 06:25
Summary,sented by a surface-diffracted ray at a complex height that is determined by the groundwave mode propagation constant. Groundwave excitation and shedding coefficients are evaluated by comparing the GTD solution for the field of a vertical Hertzian dipole over a homogeneous, isotropic, spherical eart作者: moribund 時間: 2025-3-27 10:20 作者: Immunoglobulin 時間: 2025-3-27 14:52
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