Electromagnetic Spectrum Interference Analysis System for Interphone Frequency Band Environmental Background
A spectrum interference and analysis system technology, applied in the field of radio frequency band environmental background electromagnetic spectrum interference analysis system, can solve the problems of fixed detection power threshold, reduced power amplifier efficiency, not necessarily accurate one-time settings, etc., to increase the interference distance and The effect of dry-to-pass ratio, improving efficiency and improving power
Active Publication Date: 2022-04-05
成都微泰科技有限公司
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[0005] 3. You can only enter the detection power threshold manually, and verify whether the detection power threshold is set properly
[0006] 4. The detection power threshold is fixed, only the maximum noise power threshold of all frequency bands in the passband can be set, and the maximum noise power of different frequency bands in the passband is different
[0008] When the existing IED interference detection equipment detects interference in the intercom frequency band in real time, different places of use and environments need to artificially reset the detection interference threshold, and the one-time setting is not necessarily accurate, which will make the fixed interference in the environmental background The frequency and the signal to be suppressed are detected at the same time and sent to the power amplifier (the maximum output power of the power amplifier is fixed), so the efficiency of the power amplifier will be reduced
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[0043] The technical solution of the present invention will be further described in detail below in conjunction with specific examples, but the protection scope of the present invention is not limited to the following.
[0044] The electromagnetic spectrum interference analysis of the IED detection interference equipment intercom frequency band environment background is through multiple AD sampling and FFT calculations for the two frequency bands of 136-174MHz and 350-530MHz, and then the results of multiple FFT calculations are averaged by the algorithm to analyze the frequency band The maximum noise threshold and the fixed electromagnetic frequency interference of the background.
[0045] refer to figure 1 Shown, a kind of walkie-talkie frequency band environment background electromagnetic spectrum interference analysis system, this system includes:
[0046] An FPGA module that realizes multi-frame AD sampling and FFT calculation, and an external memory DDR connected to the...
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The present invention relates to an electromagnetic spectrum interference analysis system of a walkie-talkie frequency band environment background, comprising an FPGA module for realizing multi-frame AD sampling and FFT calculation, and an external memory DDR connected with the FPGA module for storing calculation results of the FPGA module, connected with the FPGA module, The clock management chip used to control the multi-frame AD sampling frequency; the ARM processor connected to the external memory DDR through the QSPI bus, through the analysis of the electromagnetic interference spectrum of the environmental background, can improve the efficiency of the power amplifier module of the IED interference device and increase the interference distance Compared with dry pass, under the premise of the same power supply, size and weight, the power of IED interference equipment is improved, and the battery working time is prolonged.
Description
technical field [0001] The invention relates to the field of electromagnetic detection and interference, in particular to an electromagnetic spectrum interference analysis system for the environmental background of the walkie-talkie frequency band. Background technique [0002] In the realization of frequency point detection and interference of walkie-talkie frequency bands 136-174MHz and 350-530MHz, the background environment frequency interference in different places is different. In some places, the background electromagnetic spectrum interference is clean, and in some places, the background electromagnetic spectrum interference is serious. If the electromagnetic interference of the environmental background is not analyzed, when the IED detection interference equipment detects and suppresses the signal of the walkie-talkie, it will have the following four adverse consequences for the IED detection interference equipment: [0003] 1. When the electromagnetic interference s...
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IPC IPC(8): H04B17/345
CPCH04B17/345
Inventor 陈亮
Owner 成都微泰科技有限公司