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A method for rapidly increasing effective signal variation in low signal-to-noise ratio signals

An effective signal, low signal-to-noise ratio technology, applied in the field of signal processing, can solve the problem of signal data change hysteresis, and achieve the effect of increasing the amount of change and reducing the signal hysteresis

Active Publication Date: 2019-03-05
CHIPSEA TECH SHENZHEN CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method can improve the signal-to-noise ratio and reduce noise to a certain extent, it will have the influence of signal data change hysteresis

Method used

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  • A method for rapidly increasing effective signal variation in low signal-to-noise ratio signals
  • A method for rapidly increasing effective signal variation in low signal-to-noise ratio signals
  • A method for rapidly increasing effective signal variation in low signal-to-noise ratio signals

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Embodiment Construction

[0035] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0036] Such as figure 1 Shown, be the flowchart of the method realized by the present invention, shown in the figure, control flow is as follows:

[0037] 101. Set the AD module to a high-speed conversion rate (such as 500Hz during normal sampling, and now set it to 4KHz).

[0038] 102. Set the sampling window N1=16, that is, continuously sample 16 raw data to obtain the sequence data D1, and save it in the memory.

[0039] 103. Perform software filtering preprocessing on D1 data, the processing method flow is as follows figure 2 Shown:

[0040] (1) Calculate the sum of all data in D1 data and...

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Abstract

The invention discloses a method for improving effective-signal variation rapidly in low-SNR signals. The method is characterized in that an AD module is in a high conversion rate; a sample window N1 is set, and sequence data is obtained to form D1; data in D1 is pre-processed by filtering to obtain filtering data D2; accumulation and summation are carried out on data in D2 to obtain single-frame data A1; A1 data in different moments is processed by filtering; and a low noise signal is obtained. According to the invention, variable of the effective signal is improved without change of a hardware circuit, retardation of processing signals can be reduced by setting software parameters reasonably, and the method is suitable for an application system which is high in original signal noise, includes effective signals and is used for existence of excitation only.

Description

technical field [0001] The invention belongs to the technical field of signal processing, in particular to a method for processing signals with a low signal-to-noise ratio. Background technique [0002] Life is inseparable from signal processing. In the era of rapid development of digital computers, almost everything can be used as a signal. Only after processing can the signal be used as useful information, so signal processing is particularly important. The main purpose of signal processing is to weaken the redundant content in the signal, filter out mixed noise and interference, or transform the signal into a form that is easy to process, transmit, analyze and identify for subsequent other processing. For signal processing, the processing of pure mathematics without physical constraints, that is, algorithms, has appeared in front of us, and the field of signal processing has been established. [0003] In the actual application process, effective signals are often limited...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/00
CPCH04B1/0003
Inventor 廖文忠梁时
Owner CHIPSEA TECH SHENZHEN CO LTD