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A multi-domain joint trigger device

A trigger device and pre-trigger technology, applied in the field of signal processing

Active Publication Date: 2021-05-14
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, Fourier transform has its limitations: when using Fourier transform for spectrum analysis, all the information of the signal in the entire time domain must be used. Therefore, in the application of multi-domain analysis of signals, traditional oscilloscopes, The trigger mode of the spectrum analyzer is extended and improved

Method used

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  • A multi-domain joint trigger device
  • A multi-domain joint trigger device
  • A multi-domain joint trigger device

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Embodiment Construction

[0034] Specific embodiments of the present invention will be described below in conjunction with the accompanying drawings, so that those skilled in the art can better understand the present invention. It should be noted that in the following description, when detailed descriptions of known functions and designs may dilute the main content of the present invention, these descriptions will be omitted here.

[0035] Figure 4 It is a functional block diagram of a specific embodiment of the multi-domain joint triggering device of the present invention.

[0036] In this example, if Figure 4 As shown, the multi-domain joint triggering device of the present invention includes a data acquisition module 1 , a data cache module 2 , a data preprocessing module 3 , K time-frequency analysis subunits 4 , a RAM memory 5 and a trigger condition determination module 6 .

[0037] The multi-domain signal conditioned by the analog channel is input to the data acquisition module 1 for acquisi...

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Abstract

The invention discloses a multi-domain combined triggering device, which adds a data preprocessing module on the basis of the existing triggering technology to read the data stored in the pre-triggering part of the storage unit cyclically according to the group, and for each group according to the step-by-step read K Each segment is windowed and sent to K time-frequency analysis subunits one by one; each time-frequency analysis subunit performs time-frequency analysis on a segment of data, and stores the analysis results in K a storage area; the trigger condition judgment module judges the analysis results according to the order of frequency, energy and time, and if they are all satisfied, then sends the write enable signal to the data cache module, and starts to write new data to the storage unit until Fill up. This solves the triggering problem in multi-domain signal analysis, and is different from the traditional time-domain or frequency-domain trigger conditions. The trigger conditions are set from three angles of time, frequency, and energy at the same time, and the stability and observation of signal multi-domain analysis are improved. Effect.

Description

technical field [0001] The invention belongs to the technical field of signal processing, and more specifically relates to a multi-domain combined triggering device. Background technique [0002] With the continuous development of radio technology, radio signals are becoming more and more complex. Especially in the field of communication engineering technology, most communication signals are non-stationary, that is, the distribution parameters of communication signals change continuously with time. Taking a digital FM signal as an example, the frequency of the carrier changes continuously with time, while for an AM signal, the amplitude of the carrier changes continuously with time. Some modulation modes combine FM and AM, where both the amplitude and frequency of the signal vary over time. Therefore, the analysis of non-stationary signals often needs to be carried out at the multi-domain level in combination with multiple angles such as time, frequency, and energy. [00...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/00
CPCH04L27/0008H04L27/0014H04L2027/0097
Inventor 张沁川叶芃曾浩郭连平梁一平
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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