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Beidou short message interference suppression method and device, computer equipment and storage medium

A Beidou short message and interference suppression technology, applied in the field of satellite navigation, can solve the problems of interfering with airborne GPS receivers and unavailability of GPS positioning, and achieve the effect of suppressing interference

Pending Publication Date: 2022-02-08
BEIJING AERONAUTIC SCI & TECH RES INST OF COMAC +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the close frequency, during the operation of the two, the airborne Beidou short message transceiver equipment interferes with the airborne GPS receiver, resulting in GPS positioning being unavailable during the Beidou short message transmission.

Method used

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  • Beidou short message interference suppression method and device, computer equipment and storage medium
  • Beidou short message interference suppression method and device, computer equipment and storage medium

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Embodiment Construction

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0024] In one embodiment, as figure 1 As shown, a method for suppressing Beidou short message interference is provided, and the method includes the following steps:

[0025] S10. Determine whether the airborne GPS receiving signal is interfered by the Beidou short message signal.

[0026] In this real-time embodiment, the amplitude of the airborne GPS received signal can be detected specifically. If the amplitude of the airborne GPS received signal is...

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Abstract

The invention discloses a Beidou short message interference suppression method and device, computer equipment and a storage medium, which are used for suppressing interference of Beidou short message signals on an airborne GPS receiver. According to the main technical scheme, the method comprises the following steps: determining whether a received signal of an airborne GPS is interfered by a Beidou short message signal; if the airborne GPS time domain signal is interfered by the Beidou short message signal, carrying out wavelet packet transformation on the airborne GPS time domain signal interfered by the Beidou short message signal to obtain a wavelet packet coefficient; performing suppression processing on the wavelet packet coefficient, wherein the suppression processing is to set the coefficient of which the absolute value is higher than a wavelet packet coefficient threshold as a preset numerical value; and carrying out wavelet packet inverse transformation on the suppressed wavelet packet coefficient to obtain a time domain signal of the airborne GPS receiving signal after Beidou short message interference signal suppression.

Description

technical field [0001] The invention relates to the technical field of satellite navigation, in particular to a Beidou short message interference suppression method, device, computer equipment and storage medium. Background technique [0002] The Beidou short message is a characteristic function of the Beidou satellite navigation system. It has the characteristics of two-way communication and can provide global short message communication and regional short message communication. The regional communication capacity reaches 14,000 bits (1,000 Chinese characters) each time, which can transmit text, voice and pictures, and the global communication capacity is 560 bits (40 Chinese characters) each time. This function has important application value for ensuring the safety of civil aviation transportation. [0003] However, the L1 frequency of the global positioning system (global positioning system, GPS) receiver is 1575.42 MHz, and the uplink frequency used by the Beidou short...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/21H04B15/00H04B17/336
CPCG01S19/21H04B15/00H04B17/336
Inventor 郭九源张展高易佳
Owner BEIJING AERONAUTIC SCI & TECH RES INST OF COMAC