Antenna mounting method, antenna device and satellite navigation receiving equipment
An installation method and an antenna device technology, which are applied in the field of satellite navigation, can solve problems such as satellite navigation and timing equipment deception, wrong positioning or timing information, and achieve flexible installation and simple implementation
Active Publication Date: 2013-04-17
JIANGSU COMPASS NAVIGATION & COMM TECH CO LTD
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Problems solved by technology
Although this antenna device has the advantages of convenience and practicality, this structure also makes it easier for some malicious interferers to measure the physical center and phase center of the receiving antenna inside the antenna housing by observing the outside of the antenna housing, and thus Generate a false signal that maintains a fixed phase relationship with the carrier of the navigation satellite signal arriving at the receiving antenna. Here we call it a "carrier coherent spoofing" signal, which deceives satellite navigation and timing equipment to produce wrong positioning or timing information
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Embodiment Construction
[0023] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.
[0024] figure 1 A schematic flowchart of a preferred embodiment of the antenna installation method of the present invention is shown. In this embodiment, the antenna needs to be installed in a closed antenna housing, the antenna housing includes a base and a sealing cover, and the base of the antenna housing and the sealing cover are both circularly symmetrical with its central axis as the axis of symmetry structure. The so-called circular symmetric structure here means that the outer edges of any horizontal section of the base and the sealing cover are all circular, and the center of the circle is on the central axis. In step S101, the physical center of the antenna must first be measured and determined. The receiving antenna as a satellite navigation device can be either an active antenna or a passive antenna. This antenna has a certain shape, suc...
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The invention discloses an antenna mounting method, which comprises the following steps of: measuring a physical center of an antenna; determining the horizontal mounting position of the antenna on an antenna shell base, so that the physical center of the antenna is not overlapped with the central axis of an antenna shell, and is at least at a minimum horizontal spacing distance away from the central axis of the antenna shell; and determining the vertical mounting position of the antenna on the antenna shell base, so that a vertical spacing distance between the antenna and the base is selected within an effective mounting range in the antenna shell. In such a way, by the antenna mounting method, the invisibility and the position indeterminacy of the phase center of the antenna in the antenna shell can be enhanced, and the method has the advantages of simplicity in implementation and flexibility in mounting. The invention also discloses an antenna device and satellite navigation receiving equipment.
Description
technical field [0001] The present invention relates to the field of satellite navigation, in particular to an antenna installation method and an antenna device, and also to a satellite navigation receiving device using the antenna device. Background technique [0002] With the wide application of satellite navigation, positioning and timing equipment in the national economy, some important industrial sectors have greatly increased their dependence on satellite navigation, positioning and timing equipment, and at the same time have higher requirements for the safety of these equipment. [0003] In addition to the general interference caused by electromagnetic compatibility, it also includes some man-made malicious interference, which includes deceptive interference, especially the false signal that maintains a fixed phase relationship with the carrier of the satellite navigation signal reaching the receiving antenna. Strong deception. [0004] The receiving antennas of sate...
Claims
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IPC IPC(8): H01Q1/12H01Q1/42
Inventor 不公告发明人
Owner JIANGSU COMPASS NAVIGATION & COMM TECH CO LTD