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Method for reducing false alarm rate of navigation receiver signal channel and spaceborne navigation receiver

A technology for navigation receivers and signal channels, applied in satellite radio beacon positioning systems, instruments, measuring devices, etc., can solve problems such as signal false alarms, achieve the effect of improving reliability and reducing channel signal false alarm rates

Active Publication Date: 2022-05-06
NAT UNIV OF DEFENSE TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the correlation value of the signal channel is abnormal due to single event flipping in the whole process, it will inevitably cause signal false alarm

Method used

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  • Method for reducing false alarm rate of navigation receiver signal channel and spaceborne navigation receiver
  • Method for reducing false alarm rate of navigation receiver signal channel and spaceborne navigation receiver

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Embodiment Construction

[0018] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0019] In the description of the present invention, unless otherwise clearly defined, words such as setting, installation, and connection should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0020] To solve this problem, refer to figure 1 , a method for reducing the false alarm rate of a navigation receiver signal channel, comprising the following steps

[0021] ...

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Abstract

The invention discloses a method for reducing the false alarm rate of a signal channel of a navigation receiver and a space-borne navigation receiver, which allows the FPGA in the navigation receiver to abandon the three-mode co-operation of the pilot frequency branch, and support the data with important message data All three-mode configurations are made for the channel, and the DSP-assisted periodic monitoring compares the relevant values ​​of the two branches, and judges whether the current alarm is abnormal according to the status of the two branches. If it is in an abnormal alarm state, the priority reset channel is After the status is still abnormal, we will allow the alarm message to be sent. Making the data branch full of three modes can guarantee the reliability of this branch. Select the data branch with text data as the basis, and it can be used as a reference to help the pilot branch find problems and recover when it enters the normal operation state. , this method improves the safety and reliability and reduces the false alarm rate compared with the design of dual-channel part and three-mode in the traditional navigation receiver.

Description

technical field [0001] The invention relates to the field of satellite navigation signal processing, in particular to a method for reducing the false alarm rate of a navigation receiver signal channel and a satellite navigation receiver. Background technique [0002] In the field of aerospace payloads, due to the problem of single event inversion, FPGA devices often need to implement triple-mode redundancy for key parts to improve the reliability of the program. All functional modules cover three modes, and the rational allocation of resources has become an important issue to be considered in improving the device's anti-amplitude noise capability. A navigation receiver generally has a signal channel module, and each signal channel generally has two channels of a data branch and a pilot frequency branch. The integration time of the pilot frequency branch is relatively long and it is also sensitive to weak signals. It is generally used for auxiliary guidance. The code signal ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S19/13
Inventor 吴健刘哲李聪黄龙李柏渝邱杨鲁祖坤周海洋周彦波刘强
Owner NAT UNIV OF DEFENSE TECH