Satellite navigation anti-interference and attitude measurement method based on the array antenna

A satellite navigation and array antenna technology, applied in the field of satellite navigation, can solve problems such as attitude measurement accuracy dependence, attitude measurement algorithm failure, and failure to work normally

Inactive Publication Date: 2018-09-11
中国航天电子技术研究院
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Problems solved by technology

However, the accuracy of satellite navigation attitude measurement depends on the carrier phase measurement of the navigation signal, and the receiver will not work normally after being interfered, resulting in the failure of the attitude measurement algorithm.

Method used

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  • Satellite navigation anti-interference and attitude measurement method based on the array antenna
  • Satellite navigation anti-interference and attitude measurement method based on the array antenna

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Embodiment 1

[0053] This embodiment provides a satellite navigation anti-jamming method based on an array antenna, and the method includes the following steps:

[0054] 1) Set up satellite navigation array antennas for receiving satellite navigation radio frequency signals;

[0055] The satellite navigation array antenna is an antenna array in which M antenna elements are arranged in a specific array manner, and is used for receiving satellite navigation radio frequency signals. In this embodiment, M=4 or M=7, and each antenna element can receive satellite navigation signals of frequency points such as GPS L1, BDS B1, and BDS B3.

[0056] like figure 2 As shown, when the satellite navigation array antenna includes 4 antenna elements, the 4 antenna elements are arranged in a Y-shaped array, that is, one of the antenna elements is the center, and the other three antennas are evenly distributed in the The surroundings of the central antenna element form an equilateral triangle, and the dis...

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Abstract

The invention mainly belongs to the technical field of satellite navigation, and particularly relates to a method for realizing satellite navigation anti-interference and attitude measurement based onan array antenna. The attitude measurement method comprises the following steps: a satellite navigation array antenna is arranged to receive a satellite navigation radio frequency signal; each antenna array element in the satellite navigation array antenna corresponds to one radio frequency front end channel, the radio frequency front-end channel processes the radio-frequency signals received bythe antenna array element to generate a digital baseband signal; an anti-interference processing module is used for carrying out self-adaptive array signal processing on the digital baseband signals,and the interference is eliminated to form a beam null notch and interference is eliminated; the carrier phase position of the satellite navigation signal received by each antenna array element is recovered, and the attitude of the array antenna is calculated through an array antenna attitude measurement model. According to the method, the array antenna is used for carrying out anti-interference processing and attitude measurement operation on the received signals, and the satellite navigation attitude measurement function can be realized in an interference environment.

Description

technical field [0001] The invention mainly belongs to the technical field of satellite navigation, and in particular relates to a method for realizing anti-interference and attitude measurement of satellite navigation based on an array antenna. Background technique [0002] The global satellite navigation system (GNSS) mainly includes the GPS system of the United States, the GLONASS system of Russia, the Galileo system of Europe, and the Beidou satellite navigation system (BDS) of China. Among them, my country's Beidou satellite navigation system has completed the construction of Beidou No. 1 and Beidou No. 2 systems, providing satellite navigation services for my country's surrounding areas and the Asia-Pacific region. The Beidou No. 3 system is under construction and is expected to serve global users around 2020. Provide service signal. Since the navigation satellites are very far away from the earth and the satellite transmission power is limited, the navigation signals ...

Claims

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Application Information

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IPC IPC(8): G01S19/21G01S19/37
CPCG01S19/21G01S19/37
Inventor 黄丙胜卜春光刘伟王帅杨红喜
Owner 中国航天电子技术研究院
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