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Anti-deception method based on interactive distance measurement information and RNSS

An interactive, anti-spoofing technology, applied in measurement devices, radio wave measurement systems, satellite radio beacon positioning systems, etc., can solve problems such as complex implementation, and achieve the effect of reducing implementation difficulty and improving performance

Active Publication Date: 2014-04-09
ACAD OF OPTO ELECTRONICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the existing anti-spoofing algorithms all need to identify signal features, which is relatively complicated to implement

Method used

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  • Anti-deception method based on interactive distance measurement information and RNSS
  • Anti-deception method based on interactive distance measurement information and RNSS
  • Anti-deception method based on interactive distance measurement information and RNSS

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Embodiment Construction

[0028] The present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0029] First, the basic principle of interactive ranging is described.

[0030] Interactive ranging refers to the information exchange between the measurement control center 3 on the ground and the user receiver 1 through the interactive ranging platform 2, and the measurement control center completes the pseudo-range measurement. There are many kinds of interactive ranging platforms. can be balloons, ground-based repeaters, IGSO satellites, MEO satellites, GEO satellites, etc. The RDSS service business of Beidou satellite navigation system based on GEO satellites is only an implementation method of interactive ranging. Here, the basic principle of interactive ranging is explained by taking Beidou RDSS service business as an example. The working diagram is as follows figure 1 shown.

[0031] The working process is: first, the measurement control cente...

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Abstract

The invention discloses an anti-deception method based on interactive distance measurement information and an RNSS. The anti-deception method is applied to a system comprising a user receiver, an interactive distance measurement platform, a measurement control center and a navigational satellite. The user receiver exchanges interactive distance measurement signals with the measurement control center through the interactive distance measurement platform; the navigational satellite sends an RNSS signal to the user receiver; the user receiver compares positioning results or distance information obtained based on the interactive distance measurement signals and the positioning results or distance information obtained based on the RNSS, and judges whether deception interference is received; and the measurement control center judges whether the user receiver is subjected to the deception interference based on the number of interactive distance measurement answering signals received from the same user receiver and the same interactive platform nodes. The anti-deception is achieved by utilizing the interactive distance measurement platform, so that analysis on signal features can be avoided, realization difficulty is reduced, and the anti-deception can be achieved.

Description

technical field [0001] The invention relates to a satellite navigation anti-spoofing technology, and proposes an anti-spoofing method based on interactive ranging information and RNSS, which compares the interactive ranging observation with the positioning result of the receiver RNSS, thereby achieving anti-spoofing. the goal of. Background technique [0002] With the widespread application of Beidou satellite navigation system in my country, especially in the field of military and national defense, higher requirements have been placed on the security of satellite navigation. The satellite navigation signal is limited by its transmission power, and the signal when it reaches the ground will be quite weak. At the same time, because part of the signal system is open, the undisclosed signal may also be detected. Even if it is not detected, it can be transmitted by forwarding. Therefore, satellite navigation signals are very susceptible to deceptive interference, and the use of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/21
CPCG01S19/215
Inventor 袁洪徐颖魏东岩何智力张晓光欧阳光洲
Owner ACAD OF OPTO ELECTRONICS CHINESE ACAD OF SCI
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