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Anti-jamming device for front end frequency domain filtering of band-spread receiver and realizing method thereof

A receiver front-end and anti-jamming device technology, applied to the transmitter/receiver shaping network, electrical components, transmission system, etc., can solve the problems of unstable running track and easy deviation from the designed track, and achieve a signal-to-interference ratio Improve and avoid effects

Inactive Publication Date: 2011-06-01
CHENGDU GUOXING COMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the problem that the running track of the current hoist is unstable and easily deviate from the original design track during the running process of the hoist, and to provide a positioning device for the running track of the hoist

Method used

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  • Anti-jamming device for front end frequency domain filtering of band-spread receiver and realizing method thereof
  • Anti-jamming device for front end frequency domain filtering of band-spread receiver and realizing method thereof
  • Anti-jamming device for front end frequency domain filtering of band-spread receiver and realizing method thereof

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Embodiment

[0036] Such as figure 1 As shown, the present invention includes a signal receiving device, a radio frequency channel amplification processor, a down-conversion processor, an ADC digital-to-analog converter, an anti-jamming circuit, a baseband signal processing circuit, and back-end signal display and data exchange equipment connected in sequence.

[0037] The present invention realizes the working process of frequency domain filtering as follows:

[0038] After the signal is received by the receiving device, it is transmitted to the RF channel amplification processor for channel amplification processing, and then the frequency conversion processing is performed by the down-conversion processor, and the analog signal is converted into a digital signal to prepare for frequency domain filtering; the converted digital signal Under the action of the anti-interference processing circuit, the following transformation is carried out: firstly, the signal is divided into two groups, on...

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Abstract

The invention discloses an anti-jamming device for front end frequency domain filtering of a band-spread receiver, which comprises a receiver body, wherein the receiver body comprises a signal receiving preprocessor, a signal processor and a signal output device which are connected in turn. Through the device provided by the invention, the narrow-band interference is restrained by utilizing the frequency domain characteristic of narrow-band interference for filtering; the signal interference ratio above 30dB can be improved extremely; much more narrow-band interference and single-frequency interference can be quickly restrained; and the narrow-band interference having the same direction as signal can be eliminated in advance so as to avoid the influence of the narrow-band interference on the follow-up spatial filter.

Description

technical field [0001] The invention relates to a spread spectrum receiver anti-jamming device, in particular to a spread spectrum receiver front-end frequency domain filter anti-jamming device and a realization method thereof. Background technique [0002] With the advancement and development of science and technology, spread spectrum communication technology has become more and more widely used in various communication fields, such as CDMA communication system, GPS and Beidou second-generation satellite navigation system, etc. However, due to the deteriorating communication environment, spread spectrum receivers are easily affected by radio frequency interference signals (unintentional interference or man-made interference). Narrowband interference is the most common form of interference. Due to its narrow bandwidth, concentrated energy, and convenient generation, it has a particularly significant impact on the performance of spread spectrum receivers. Contents of the in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L25/03H04B1/71
Inventor 陈显宁
Owner CHENGDU GUOXING COMM
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