False detection method of satellite navigation signal and satellite navigation positioning receiver

A technology for satellite navigation signals and detection methods, applied in the field of satellite navigation, can solve the problems of flexibility, practicability, accuracy, effectiveness, and lack of advantages in technical cost, and achieve enhanced anti-spoofing capability, low cost, and scalability. strong effect

Active Publication Date: 2013-05-22
JIANGSU COMPASS NAVIGATION & COMM TECH CO LTD
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Problems solved by technology

These methods provide a reference basis for the detection and application of false satellite navigation signals, but in some specific application fields, these methods are difficult to be closely combined with actual application conditions, so the flexibility, practicability, accuracy and effectiveness of applications And there is no advantage in terms of technical cost

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  • False detection method of satellite navigation signal and satellite navigation positioning receiver
  • False detection method of satellite navigation signal and satellite navigation positioning receiver
  • False detection method of satellite navigation signal and satellite navigation positioning receiver

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Embodiment Construction

[0030] First of all, it needs to be clearly pointed out that the method adopted by the embodiment of the present invention is based on the demodulation of the received satellite navigation signal, and the information such as the navigation message can be obtained. method of deception.

[0031] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0032] figure 1 A schematic flow chart of the first embodiment of the false detection method for satellite navigation signals of the present invention is shown. The false detection method includes the following steps:

[0033] Step S101: when the receiver is turned on, perform initial positioning through the receiver, and obtain the initial position of the receiver according to the positioning result.

[0034] Among them, the initial position of the satellite navigation and positioning receiver must be determined first. The receiver in the embodiment of the present...

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Abstract

The invention discloses a false detection method of a satellite navigation signal. Based on an initial position of a receiver, the method calculates a general location parameter, relative to the receiver, of a satellite, wherein the general location parameter is corresponding to the received satellite navigation signal, if the general location parameter is not within an observation vision field of the receiver, the general location parameter is judged to be a false signal, and the method further carries out false detection through calculating error distance of a spatial position of the satellite. The invention further discloses a satellite navigation positioning receiver. Through the above way, the method detects the false navigation signal through analyzing navigation message contents, strengthens anti-spoofing ability of the receiver, and further has the advantages of being low in implementation cost, strong in expansibility, capable of being firmly combined with the application mode of the receiver and the like.

Description

technical field [0001] The invention relates to the field of satellite navigation, in particular to a false detection method of satellite navigation signals and a satellite navigation positioning receiver. Background technique [0002] With the widespread application of GPS and "Beidou" satellite navigation and positioning and timing services in our country, industries that have an important impact on the national economy, such as communications, electric power, transportation, etc., not only have a greater impact on the accuracy of satellite navigation, positioning and timing services The requirements are high, and the dependence on it is also greatly enhanced. Basic services and technical support are provided mainly or entirely through satellite navigation, positioning and timing services. Therefore, higher requirements are put forward for the security of satellite navigation, positioning and timing services. [0003] Disguised jamming of satellite navigation receivers by ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/27G01S19/13
Inventor 不公告发明人
Owner JIANGSU COMPASS NAVIGATION & COMM TECH CO LTD
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