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Deception signal generation method and device

A signal generation and signal technology, applied in the direction of measuring devices, satellite radio beacon positioning systems, instruments, etc., can solve the problem that deceptive signals are easy to be found, and achieve the effect of improving deception

Active Publication Date: 2022-06-24
THE HONG KONG POLYTECHNIC UNIV SHENZHEN RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, an embodiment of the present invention provides a method and device for generating a spoofed signal to solve the problem that the spoofed signal is easily found

Method used

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  • Deception signal generation method and device
  • Deception signal generation method and device
  • Deception signal generation method and device

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Embodiment 1

[0079] like figure 1 As shown, it is a schematic flowchart of the method for generating a spoofing signal provided by Embodiment 1 of the present invention. This embodiment is applicable to the application scenario where the receiver receives the satellite signal sent by the navigation satellite. The method can be executed by the processor in the spoofing signal generating device, and the control device can be an intelligent terminal, tablet or PC, etc.; in the implementation of the present invention In the example, the spoofing signal generating device is used as the execution subject for description, and the method specifically includes the following steps:

[0080] S110, acquiring the original satellite signal received by the target receiver;

[0081] When the receiver receives the satellite signal sent by the navigation satellite, it is easily interfered by the spoofing signal, so that the receiver can obtain the wrong positioning and speed determination result. The gene...

Embodiment 2

[0169] like Figure 8 What is shown is the device for generating a spoofing signal provided by the third embodiment of the present invention. On the basis of the first embodiment, the embodiment of the present invention also provides a spoofing signal generating device 8, the device includes:

[0170] The original signal acquisition module 801 is used to acquire the original satellite signal received by the target receiver;

[0171] A satellite tracking module 802, configured to capture satellites for tracking according to the original satellite signals, and obtain the tracking results and positioning results of each satellite tracking channel;

[0172] In an implementation example, when capturing satellites for tracking according to the original satellite signals, and obtaining the tracking results and positioning results of each satellite tracking channel, the satellite tracking module 802 includes:

[0173] a frequency conversion unit for down-converting the original sate...

Embodiment 3

[0192] Figure 9 It is a schematic structural diagram of the device for generating a spoofing signal provided in Embodiment 3 of the present invention. The apparatus comprises: a processor 1, a memory 2, a computer program 3 stored in said memory 2 and executable on said processor 1, such as a program for a spoofing signal generation method; and a vector tracking navigation filter 4 , the vector tracking and navigation filter is used to perform positioning calculation according to the original satellite signal received by the target receiver, and obtain the position, speed, clock error and clock drift of the target receiver. When the processor 1 executes the computer program 3, the steps in the above-mentioned embodiment of the method for generating a spoofing signal are implemented, for example, figure 1 Steps S110 to S150 are shown.

[0193] Exemplarily, the computer program 3 can be divided into one or more modules, and the one or more modules are stored in the memory 2 a...

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Abstract

This application belongs to the technical field of generation of spoofing signals in navigation satellite systems, and provides a method and device for generating spoofing signals. The method includes: obtaining the original satellite signal received by the target receiver; capturing and tracking the satellite according to the original satellite signal, and obtaining The tracking results and positioning results of each satellite tracking channel; using T k The tracking results and positioning results of the satellites mentioned at the moment, predict T k+1 The real signal of each satellite described at the moment generates the real signal component of attacking the original satellite signal; according to the T in the preset deception trajectory k+1 time position and velocity, generating T k+1 The spoofing signal component of each satellite mentioned at time; at T k+1 generating a spoofing attack signal according to the real signal component and the spoofing signal component at all times, so as to embed the spoofing attack signal into the antenna signal of the target receiver. The embodiment of the present application solves the problem that fraudulent signals are easily found.

Description

technical field [0001] The present invention relates to the technical field of spoofing signal generation of navigation satellite systems, in particular to a method and device for generating spoofing signals. Background technique [0002] Generating navigation satellite spoofing signals is an important prerequisite for researching anti-spoofing technology, and it is of great significance to improve the security and robustness of navigation receivers. Satellite navigation system is a positioning system that uses artificial earth satellites to carry equipment for radio navigation. It has the characteristics of global coverage, real-time navigation, and three-dimensional positioning. It plays an important role in national security, social economy, production and life. For any point on the earth's surface, the three-dimensional coordinates can be determined by using the "connection line" from the satellite to the user's position through the principle of the intersection of three...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S19/21G01S19/29G01S19/30
CPCG01S19/215G01S19/29G01S19/30
Inventor 孟骞许立达徐兵
Owner THE HONG KONG POLYTECHNIC UNIV SHENZHEN RES INST
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