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Anti-interference antenna of satellite navigation

A satellite navigation and antenna technology, applied in the field of satellite navigation, can solve the problems of loss of normal working ability and reduction of navigation receiver, etc., and achieve the effects of convenient direction map control, guaranteed working ability and effective positioning results

Active Publication Date: 2015-03-04
北京星地恒通信息科技有限公司
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  • Abstract
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AI Technical Summary

Problems solved by technology

Suppressive jamming is to use jammers to transmit jamming signals to cover the spectrum of satellite signals in a certain way, so that the navigation receiver will reduce or completely lose its normal working ability

Method used

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  • Anti-interference antenna of satellite navigation
  • Anti-interference antenna of satellite navigation

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Embodiment Construction

[0030] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0031] figure 1 It is a structural schematic diagram of the satellite navigation anti-jamming antenna in the embodiment of the present invention. Such as figure 1 As shown, the satellite navigation anti-jamming antenna includes an antenna array, an anti-jamming radio frequency channel module, an anti-jamming processing module and an up-conversion module.

[0032] The antenna array is an antenna array with 4 antenna elements arranged in a specific array, mainly to send the received satellite navigation radio frequency signal to the anti-jamming radio frequency channel module, and the signals from different directions are different for the 4 array elements. The phas...

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Abstract

The invention discloses an anti-interference antenna of a satellite navigation. The technical scheme is that the antenna array sends received satellite navigation radio frequency signals to an anti-interference radio frequency channel module; the satellite navigation signals are subjected to low-noise amplification, down-conversion, and filtering amplification, intermediate frequency analogue signals are sent to an anti-interference processing module and a reference clock is provided, and a local oscillator of a primary up-conversion is provided for an up-conversion module; the received intermediate frequency analogue signals are subjected to A / D sampling to be converted to digital signals by the anti-interference processing module, navigation digital intermediate frequency signals are output through intermediate frequency bandpass filtering, phase-amplitude error correction, self-adapting array signal processing, and digital AGC, and the simulation signals are output to the up-conversion module through a DA converter; the intermediate frequency analogue signals are subjected to two-stage upper up-conversion processing to output radio frequency signals for positioning and navigation of satellite navigation equipment. The technical scheme can effectively conduct electric defense when the satellite navigation equipment is subjected to oppressive disturbance, guarantees normal working capacity, and provides efficient positioning result.

Description

technical field [0001] The invention relates to the technical field of satellite navigation, in particular to a satellite navigation anti-jamming antenna. Background technique [0002] Satellite navigation systems can bring significant benefits to military operations, resulting in electronic offensive and defensive confrontation between interference and anti-jamming of satellite navigation systems. [0003] Because the signal power of the satellite navigation signal is low when it reaches the ground, and the frequency of the navigation signal is public and the modulation characteristics are widely known, the satellite navigation is extremely vulnerable to artificial malicious interference. Suppressive jamming is to use jammers to emit jamming signals to cover the spectrum of satellite signals in a certain way, so that the navigation receiver will reduce or completely lose its normal working ability. [0004] With the gradual improvement of my country's "Beidou-1" and "Beido...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S19/21H01Q21/00
Inventor 张克芳王大全梁敏敏朱刚韩永占奚旻
Owner 北京星地恒通信息科技有限公司
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