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A method and device for extracting jammer performance index

A technology of jammer and performance, applied in the direction of interference to communication, electrical components, etc., can solve problems such as being unfavorable for widespread use, and achieve the effect of effective performance indicators, accurate and flexible extraction, and deepening of understanding

Active Publication Date: 2019-06-28
DALIAN ROILAND SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

To some extent, this scheme is not conducive to widespread use

Method used

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  • A method and device for extracting jammer performance index
  • A method and device for extracting jammer performance index
  • A method and device for extracting jammer performance index

Examples

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Embodiment 1

[0031] This solution takes one channel of the jammer GSM900 (925MHz-960MHz) as an example for illustration. The schematic diagram of the specific implementation plan is as follows figure 2 As shown, the implementation process of the specific scheme is as follows: A method of extracting the performance index of the jammer, using the signal source controller to generate the frequency sweep signal of the required interference frequency band GSM900, the schematic diagram is as follows: image 3 As shown; the specific steps are as follows:

[0032] S1: Sawtooth wave generator and sampler are used to generate a sawtooth wave signal fout with a bandwidth of 35MHz. The output result is as follows Figure 4 Shown

[0033] S2: The sawtooth signal fout is modulated by the modulator to generate the signal Pout1 of the required frequency band, namely 925MHz-960MHz, and the output result is as follows Figure 5 ;

[0034] S3: The signal Pout1 is loaded into the signal generator through the signal...

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Abstract

The invention provides a method and device for extracting a performance index of a jammer. The method comprises the following steps: generating a sawtooth signal fout orderly through a sawtooth wave generator and a sampler; modulating the sawtooth signal fout by a modulator, and generating a signal Pout 1 of a needed frequency band; loading the signal Pout 1 to a signal generator by a signal loader, and generating an actual interference signal pout by the signal generator; emitting the interference signal Pout through an antenna; and changing a distance between a mobile phone and the antenna according to a distance needs to be interfered, and when the mobile phone shows that no signal exits at a certain distance, determining the performance index of the jammer. The invention deepens the understanding of designers to a fundamental principle of the jammer, and provides a method for accurately and flexibly extracting the performance index of the jammer.

Description

Technical field [0001] The invention belongs to the field of jammer performance, and specifically is a method and device for extracting jammer performance indicators. Background technique [0002] With the rapid development of communication technology, the use of electronic devices such as mobile phones has become more and more common, bringing unprecedented convenience to people’s daily work and life, but also generating many problems that cannot be ignored, such as information security, cheating in examination rooms and mobile phones Crime and so on, so it is necessary to shield mobile communication signals on special occasions. In this case, signal jammers emerged. [0003] According to the working principle of the mobile phone, that is, within a certain frequency range, the mobile phone and the base station are connected by radio waves, and data and sound transmission are completed with a certain baud rate and modulation method. The jammer scans from the low-end frequency of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04K3/00
Inventor 田雨农周磊周秀田史文虎
Owner DALIAN ROILAND SCI & TECH CO LTD
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