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Method and device for processing broadband interference

A wideband interference and narrowband interference technology, applied in the field of information processing, can solve problems such as the inability to use spatial filtering schemes, and achieve the effect of avoiding ADC saturation

Active Publication Date: 2020-07-10
UNICORE COMM INC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, for consumer GNSS receivers, due to control cost considerations, there is generally only one antenna, and the spatial filtering scheme cannot be used

Method used

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  • Method and device for processing broadband interference
  • Method and device for processing broadband interference
  • Method and device for processing broadband interference

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Embodiment Construction

[0038] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the embodiments of the embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the embodiments of the present application and the features in the embodiments can be combined arbitrarily with each other.

[0039] The embodiment of the present application provides a device for dealing with broadband interference, which is characterized in that it is applied to a multi-mode GNSS receiver, and the device includes an automatic gain controller AGC, wherein the input terminal of the automatic gain controller AGC is connected to the RF front end The analog-to-digital converter is connected, and the output terminal is connected to the analog signal amplifier of the RF front end, wherein:

[0040] The automatic gain controller AGC...

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Abstract

The embodiment of the invention discloses a method and a device for processing broadband interference. The device is applied to a multimode GNSS receiver. The device comprises an automatic gain controller AGC, wherein the input end of the automatic gain controller AGC is connected with an analog-to-digital converter at a radio frequency front end, the output end of the automatic gain controller AGC is connected with an analog signal amplifier at the radio frequency front end, and the automatic gain controller AGC is used for acquiring signal amplitude information of GNSS signals output by an analog-to-digital converter ADC; determining change information of the signal amplitude of the GNSS signal; and when the change information of the signal amplitude of the GNSS signal conforms to a preset abnormal change condition, outputting a control signal for reducing radio frequency gain to the analog signal amplifier.

Description

technical field [0001] The embodiments of the present application relate to the field of information processing, in particular to a method and device for processing broadband interference. Background technique [0002] Countries and regions such as China, the United States, Russia, and the European Union have successively launched and built their own satellite navigation systems in recent years, and applications based on GNSS positioning are almost everywhere. With the continuous improvement of consumer demand for positioning accuracy, positioning time and positioning availability, multi-mode GNSS receivers have gradually become mainstream products in the market. figure 1 It is a schematic diagram of GNSS signals in the L1 and L5 frequency bands in the related art. Such as figure 1 As shown, the multi-mode GNSS receiver not only supports receiving C / A signals in the traditional GPS L1 frequency band, but also supports receiving GNSS signals in Beidou B1I, Galileo E1b and E...

Claims

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Application Information

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IPC IPC(8): G01S19/21
CPCG01S19/21
Inventor 贾志科黄磊
Owner UNICORE COMM INC