Satellite antenna and satellite navigation signal enhancement method
A satellite antenna and antenna unit technology, applied in the field of satellite communications, can solve the problems of large signal space transmission attenuation, signal interference, lack of complex terrain adaptation ability and continuous coverage ability, etc., so as to improve the signal landing power and improve the anti-interference ability of navigation. , The effect of meeting the needs of military and civil navigation enhancement
Pending Publication Date: 2019-09-10
SHANGHAI ENG CENT FOR MICROSATELLITES
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Problems solved by technology
At present, my country's Beidou navigation system is composed of medium and high-orbit satellites. The satellite orbit height is relatively high, the signal space transmission attenuation is large, and the signal ground level is low, so its signal is easily interfered and invalidated.
Moreover, the Beidou navigation system is mainly aimed at providing wide-area services, with a wide signal coverage, but it lacks the ability to adapt to complex terrain and continuous coverage. In particular, when it is applied to a theater, due to the complex geographical terrain and harsh electromagnetic environment in the combat area, The above problems have become more prominent and need to be solved urgently
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[0025] In describing the embodiments of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top ", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention. The attached drawings are schematic diagrams or conceptual diagrams, and the relationship between the thickness and width of each part, as well as the proportional relationship between each part, etc., are not completely consistent with their actual values.
[0026] In vi...
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The invention provides a satellite antenna. The satellite antenna comprises a spherical crown base, a plurality of positioning circles are defined on the spherical crown base, a plane where each positioning circle is located is parallel to the base surface of the spherical crown base, and a plurality of antenna units are uniformly distributed along the circumference of each positioning circle. Theinvention also provides another satellite antenna. The satellite antenna comprises a rectangular substrate, the rectangular substrate is provided with an array consisting of M*N antenna units, wherein M and N are positive integers. According to the satellite antenna and the satellite navigation signal enhancement method, the L-frequency-band direct-sending navigation signal with stronger power can be broadcast by the low-orbit satellite, the signal landing power is greatly improved, the navigation anti-interference capability is improved, multiple continuous coverage is formed for a target area through adoption of an antenna staring beam technology, and the local navigation enhancement service which can be flexibly deployed in the global range is achieved.
Description
technical field [0001] The invention relates to the field of satellite communication, in particular to a satellite antenna and a method for enhancing satellite navigation signals. Background technique [0002] Peace and development are still the themes of today's world, and local wars and regional conflicts are still inevitable in the future. Therefore, it is proposed to enhance regional navigation of regional battlefields with local coverage of tens of kilometers to hundreds of kilometers, and provide these areas with high-precision, Highly anti-jamming navigation enhancement services are extremely valuable. [0003] For cities and mountainous areas where natural disasters occur, due to the harsh environment for receiving navigation signals, it is difficult to achieve positioning and timing services. At specific times, services with enhanced navigation signal power are urgently needed. [0004] Traditional navigation enhancement technologies are mostly concentrated in the ...
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IPC IPC(8): G01S19/21G01S19/35G01S19/38
CPCG01S19/13G01S19/21G01S19/35G01S19/38
Inventor 龚文斌王宇凯常家超邵丰伟陆新颖沈苑
Owner SHANGHAI ENG CENT FOR MICROSATELLITES
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