CN116244637B - Burst signal acquisition method and device - Google Patents
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- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/46—Multiprogramming arrangements
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- G06F9/546—Message passing systems or structures, e.g. queues
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- G—PHYSICS
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention provides a burst signal acquisition method and a burst signal acquisition device, which belong to the technical field of signal detection and comprise the following steps: storing signal data into a buffer queue, and detecting whether the signal data in each window in the buffer queue is burst signal data or not; determining a start window and an end window of signal data acquisition in each window according to a detection result corresponding to each window; and collecting signal data from a start window to an end window in the buffer queue. By setting the buffer queue and the dividing window, the invention realizes that the signal data is still in the buffer queue when the burst signal is detected, and further realizes the complete nondestructive acquisition of the burst signal from the appearance time to the disappearance time under the unattended condition.
Description
Technical Field
The present invention relates to the field of signal detection technologies, and in particular, to a method and apparatus for collecting burst signals.
Background
The traditional signal acquisition equipment can continuously acquire and record signals with various bandwidths, and the acquisition tolerance only depends on the capacity of a hard disk of the equipment. The acquisition and recording mode is suitable for continuous and stable signal acquisition or acquisition and recording of environmental signals.
If the acquisition object is a short burst signal which randomly appears, the continuous acquisition recording mode can acquire a large amount of noise data without target signals, and effective signals cannot be accurately recorded. The invalid noise data not only occupies precious data storage space, but also needs to carry out a great deal of subsequent processing work to select the data containing the burst signal. Therefore, the continuous acquisition recording mode is difficult to be suitable for the acquisition of short burst signals.
If the burst signal is collected and recorded through manual operation, the collection can only be started when the signal is observed, and the complete burst signal is difficult to collect because the signal suddenly appears and has short duration, and the short burst signal which randomly appears is difficult to pay attention to for a long time by manpower.
Disclosure of Invention
The invention provides a burst signal acquisition method and device, which are used for solving the defect that the burst signal is difficult to acquire completely in the prior art, and realizing the complete acquisition of the burst signal after the burst signal is automatically and accurately identified.
The invention provides a burst signal acquisition method, which comprises the following steps:
storing signal data into a buffer queue, and detecting whether the signal data in each window in the buffer queue is burst signal data or not;
determining a start window and an end window of signal data acquisition in each window according to a detection result corresponding to each window;
and collecting signal data from a start window to an end window in the buffer queue.
According to the burst signal acquisition method provided by the invention, before the step of storing the signal data into the buffer queue and detecting whether the signal data in each window in the buffer queue is burst signal data, the method further comprises the steps of:
determining the width of the window according to the sampling rate of the signal data and the preset frequency resolution of the burst signal data detection;
and determining the step of the window according to the sampling rate of the signal data and the preset time resolution of the burst signal data detection.
According to the burst signal acquisition method provided by the invention, the step of detecting whether the signal data in each window in the buffer queue is burst signal data comprises the following steps:
performing fast Fourier transform and spectrum splicing on the signal data in each window to obtain spectrum data of the signal data;
comparing each spectrum data corresponding to each window with a first preset threshold value, and counting the number of spectrum data which is larger than the first preset threshold value and corresponds to each window;
and under the condition that the number of the frequency spectrum data is larger than a second preset threshold value, determining the signal data in the window as burst signal data.
According to the burst signal acquisition method provided by the invention, when the number of the spectrum data is greater than a second preset threshold, determining that the signal data in the window is burst signal data comprises:
extracting the characteristics of the signal data in each window, and matching the characteristics of the signal data with the characteristics of the target burst signal;
and under the condition that the characteristics of the signal data and the characteristics of the target burst signal are successfully matched and the number of the frequency spectrum data is larger than a second preset threshold value, determining the signal data in the window as burst signal data.
According to the burst signal acquisition method provided by the invention, the step of determining the start window and the end window of signal data acquisition in the windows according to the detection result corresponding to each window comprises the following steps:
after the signal data is acquired last time, taking a window with a first detection result being burst signal data as a starting window for the signal data acquisition;
and under the condition that the detection result of the windows with the continuous preset number is not burst signal data, determining an ending window of signal data acquisition according to the windows with the continuous preset number.
The burst signal acquisition method provided by the invention further comprises the following steps:
determining the sampling time length corresponding to the buffer queue according to the length of the buffer queue and the sampling rate of the signal data;
determining the number of windows corresponding to the cache queue according to the length of the cache queue and the steps of the windows;
and detecting whether the signal data in the window corresponding to the number of the windows is burst signal data or not in the sampling time length.
According to the burst signal acquisition method provided by the invention, the image processor detects whether the signal data in each window in the buffer queue is burst signal data or not, so that the detection duration of all windows in the buffer queue is smaller than the sampling duration.
The invention also provides a burst signal acquisition device, which comprises:
the detection module is used for storing the signal data into a buffer queue and detecting whether the signal data in each window in the buffer queue is burst signal data or not;
the determining module is used for determining a starting window and an ending window of signal data acquisition in each window according to the detection result corresponding to each window;
and the acquisition module is used for acquiring signal data from the start window to the end window in the buffer queue.
The invention also provides an electronic device comprising a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the processor realizes any one of the burst signal acquisition methods when executing the program.
The invention also provides a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements a burst signal acquisition method as described in any of the above.
According to the burst signal acquisition method and device, signal data are input into the buffer queue, detection of the signal data in each window is rapidly completed in the buffer queue through the plurality of windows, the speed of signal data detection is improved, and under the condition that a burst signal is detected, the burst signal data temporarily stored in the buffer queue are completely acquired from a starting window to an ending window; when the burst signal is detected, the signal data is still in the buffer queue, so that the complete nondestructive collection of the burst signal from the appearance time to the disappearance time is realized under the unattended condition.
Drawings
In order to more clearly illustrate the invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic flow chart of a burst signal acquisition method provided by the invention;
FIG. 2 is a schematic diagram of a buffer queue and a window in the burst signal acquisition method provided by the invention;
FIG. 3 is a flow chart of detecting signal data in each window in a buffer queue in the burst signal acquisition method provided by the invention;
fig. 4 is a schematic structural diagram of a burst signal acquisition device provided by the invention;
fig. 5 is a schematic structural diagram of an electronic device provided by the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The following describes a burst signal acquisition method in connection with fig. 1-3, including:
step 101, storing signal data into a buffer queue, and detecting whether the signal data in each window in the buffer queue is burst signal data or not;
before the signal data is input into the buffer queue, analog-to-digital conversion is carried out on the signal data, and the analog signal is converted into a digital signal.
The burst signal detection and data recording are inseparable, in order to realize burst signal detection and identification and signal acquisition at the same time, a data buffer queue is preset, a plurality of windows are divided, and whether the signal data is burst signal data or not is detected in each window.
The present embodiment does not limit the type of window.
Alternatively, the window may be a scrolling window. Specifically, the cache queue is uniformly divided into a plurality of windows, each window is not overlapped with each other, and no interval exists between two adjacent windows. And detecting the signal data in each window in the buffer queue, and determining whether the signal data in each window is burst signal data.
Alternatively, the window may be a sliding window. Specifically, a buffer queue is divided into a plurality of windows with the same size by a certain fixed step, signal data in each window is detected in the buffer queue, and whether the signal data in each window is burst signal data is determined.
Wherein each window needs to be able to accommodate at least one complete signal acquisition of data.
The size of the cache queue is not limited in this embodiment. In one possible implementation, signal data sampled within 1 second is input into a buffer queue.
Alternatively, the cache queue may be one or more.
When the buffer queue is one, after the signal data in all windows are detected, the next group of signal data enters the buffer queue so as to avoid losing the signal data.
When the number of the buffer queues is multiple, the parallel processing technology can be adopted to detect the signal data in each window so as to realize the circulation of the data flow, so that the signal data can continuously enter the buffer queues, and the efficiency of signal acquisition is improved.
The parallel processing technique may be ping-pong buffer.
The detection method in this embodiment may be fourier transform, fast fourier transform, energy detection, or the like, and the detection method of the signal data in this embodiment is not limited.
Step 102, determining a start window and an end window of signal data acquisition in each window according to a detection result corresponding to each window;
all windows from the start window to the end window together record and complete a complete burst signal.
In the buffer queue, the first window for detecting the burst signal is the initial window for data acquisition.
Optionally, the end window is located after the window in which the burst signal is not detected for the first time after the occurrence of the burst signal, so as to increase the integrity of the burst signal record.
And step 103, collecting signal data from a start window to an end window in the buffer queue.
The signal data from the start window to the end window in the buffer queue together form a completed burst signal data.
Optionally, after the signal data detection in all windows is completed, under the condition that the next group of signal data enters the buffer queue, the burst signal data in the buffer queue is collected after the signal data detection in all windows in the buffer queue is completed.
Optionally, in the case of parallel detection of signal data in the window and acquisition of detected burst signal data, the burst signal data in the buffer queue is acquired in the order in which the windows detect the burst signal.
Firstly, burst signals are detected, and data acquisition is started; and then detecting the disappearance condition of the signal in real time in the acquisition process, and stopping acquisition after confirming the disappearance of the signal. And continuously inputting the signal data into a buffer queue, and determining an acquisition strategy while detecting until the whole signal data is processed.
According to the burst signal acquisition method, signal data are input into the buffer queue, detection of the signal data in each window is rapidly completed in the buffer queue through the arrangement of the windows, the speed of signal data detection is improved, and under the condition that burst signals are detected, the burst signal data temporarily stored in the buffer queue are completely acquired from the initial window to the end window; when the burst signal is detected, the signal data is still in the buffer queue, so that the nondestructive collection of the signal data at the occurrence time of the burst signal is realized under the unattended condition.
In the burst signal acquisition method of the present invention, before the step of storing the signal data into the buffer queue and detecting whether the signal data in each window in the buffer queue is burst signal data, the method further includes:
optionally, the sampling rate S of the signal data is determined according to the bandwidth of the signal data. Typically, the sampling rate S is higher than twice the bandwidth of the signal data, so as to avoid aliasing.
Further, the number of sampling points in the buffer queue is determined by the sampling rate. Specifically, the sampling rate S is multiplied by the sampling time T to calculate the number L of sampling points in the buffer queue.
Determining the width of the window according to the sampling rate of the signal data and the preset frequency resolution of the burst signal data detection;
the preset frequency resolution is preset according to the characteristics of the signal data.
Alternatively, the frequency resolution Δf=s/L is preset. The preset frequency resolution deltaf is determined by selecting the proper sampling rate S and the sampling point number L, so that the frequency characteristics of the signal can be accurately analyzed under the preset frequency resolution, and the waste of calculation resources is reduced.
As shown in fig. 2, the width N of the window, i.e., the number of sampling points contained in the window, is also the number of sampling points used for each detection.
The width of the window is determined by the sampling rate of the signal data and the preset frequency resolution of the burst signal data detection. Specifically, the width n=s/Δf of the window.
The width of the proper window is determined by determining the proper preset frequency resolution, so that the size of the window is ensured to complete signal sampling at least once, and the excessive calculation amount of data detection in each window is not caused by excessive contained signal sampling data.
And determining the step of the window according to the sampling rate of the signal data and the preset time resolution of the burst signal data detection.
The preset time resolution Δt can detect the burst signal with the burst duration greater than or equal to Δt, that is, the preset time resolution Δt is less than or equal to the burst duration capable of detecting the burst signal.
In order to prevent the signal data in the buffer queue from being divided into two adjacent windows, which leads to missed detection, the window in this embodiment is a sliding window. Since too large a step of the sliding window may result in smaller signal data being missed, the step of the window needs to be determined by the sampling rate and the preset time resolution.
In this embodiment, the step Δn=Δt×s of the window.
According to the burst signal acquisition method, the sliding window is set, and reasonable window stepping is selected, so that burst signals can be completely detected by one window, omission of burst signal identification is reduced, a process from occurrence to disappearance of short burst signals which occur randomly is completely recorded, and the integrity of burst signal recording is further improved.
In the burst signal acquisition method of the present invention, the step of detecting whether the signal data in each window in the buffer queue is burst signal data includes:
performing fast Fourier transform and spectrum splicing on the signal data in each window to obtain spectrum data of the signal data;
in this embodiment, a flowchart for detecting whether the signal data in each window in the buffer queue is burst signal data is shown in fig. 3.
And carrying out operation on the signal data in each window in a fast Fourier transform mode, and converting the signal data from a time domain to a frequency domain.
And then carrying out data transformation and spectrum splicing on the operation result of the fast Fourier transformation as follows, thereby obtaining the complete spectrum of the signal data in the window:
the result after FFT operation is recorded asWhere N is the window width.
Record the spectrum result data asAfter spectrum splicing is completed through inversion operation:
。
after the spectrum splicing is realized in the mode, the spectrum data of one complete signal data in the window can be obtained.
Comparing each spectrum data corresponding to each window with a first preset threshold value, and counting the number of spectrum data which is larger than the first preset threshold value and corresponds to each window;
the magnitude of the first preset threshold is empirically determined.
Alternatively, the first preset threshold may be a signal detection threshold. And comparing the signal data in each window with a signal detection threshold one by one, and counting the number of frequency spectrum data exceeding the signal detection threshold.
Alternatively, the first preset threshold may be a signal detection peak. For the signal data in each window, comparing the signal data with the signal detection peak value one by one, and counting the frequency spectrum data number of which the signal peak value exceeds a first preset threshold value.
And under the condition that the number of the frequency spectrum data is larger than a second preset threshold value, determining the signal data in the window as burst signal data.
The second preset threshold is empirically determined. When the number of the frequency spectrum data is larger than a second preset threshold value, namely, signals are continuously detected, the signal data in the window are determined to be burst signal data, so that the influence of noise or unstable signals on the signal detection is avoided.
In this embodiment, the number of spectrum data is not limited to the continuity.
For example, each window contains 1000 samples, when the second preset threshold is 10, if the spectrum data of 12 samples in each window is greater than the first preset threshold, that is, the number of spectrum data in the window is greater than the second preset threshold, the signal data in the window is determined to be burst signal data.
According to the burst signal acquisition method, the frequency spectrum data of a plurality of sample points in each window are compared with the first preset threshold, and under the condition that the number of the frequency spectrum data exceeding the first preset threshold is larger than the second preset threshold, the influence of noise and unstable signals on a detection result is eliminated, the burst signal appears in the window is determined, the accuracy of burst signal identification is improved, the acquisition of invalid noise data is reduced, and the burst signal acquisition method has universality.
In the burst signal acquisition method of the present invention, when the number of the spectrum data is greater than a second preset threshold, determining that the signal data in the window is burst signal data includes:
extracting the characteristics of the signal data in each window, and matching the characteristics of the signal data with the characteristics of the target burst signal;
the target burst signal is the burst signal which is expected to be collected. The signal characteristic may be a proprietary characteristic determined based on the target burst signal.
Optionally, the characteristics of the signal data may include one or more of time domain characteristics, frequency domain characteristics, statistical characteristics, time-frequency characteristics, and non-linear characteristics of the signal.
Wherein, the time domain characteristic of the signal describes the change rule of the signal in time, including the amplitude, phase, frequency, period and the like of the signal.
The frequency domain characteristics of the signals describe the distribution rule of the signals in the frequency domain, including the frequency, bandwidth, spectrum shape and the like of the signals.
The statistical features of the signal describe the probability distribution of the signal, including the mean, variance, probability density function, etc. of the signal.
The time-frequency characteristic of the signal describes the change rule of the signal in the time domain and the frequency domain, including the instantaneous frequency, the instantaneous amplitude, the instantaneous phase and the like of the signal.
The nonlinear characteristics of the signal describe the nonlinear characteristics of the signal, including chaos values, self-similarity, adaptivity, and the like of the signal.
Different signals have different characteristics, and the characteristics of the signal data are flexibly set to be matched with the characteristics of the target burst signals, so that the detected burst signals are screened.
And under the condition that the characteristics of the signal data and the characteristics of the target burst signal are successfully matched and the number of the frequency spectrum data is larger than a second preset threshold value, determining the signal data in the window as burst signal data.
Optionally, when the feature similarity of the signal data and the feature of the target burst signal exceeds a third preset threshold, it is determined that the feature of the signal data and the feature of the target burst signal are successfully matched, and the type of the burst signal is the same as the type of the target burst signal. Wherein the third preset threshold is empirically set.
On the basis, when the frequency spectrum data number of the signal data with successful feature matching is larger than a second preset threshold value, determining that the signal data in the window is burst signal data which is expected to be acquired.
According to the method for collecting the outstanding signals, the signal data in the window are matched according to the characteristics of the target burst signals, the burst signal data with the same signal type as the target burst signals are screened out, the directional detection and the accurate matching of the burst signals are realized, the storage and the processing of invalid data are avoided as much as possible, the data storage space is saved, and the efficiency of signal collection is greatly improved.
In the burst signal acquisition method of the present invention, the step of determining a start window and an end window of signal data acquisition in each window according to a detection result corresponding to the window includes:
after the signal data is acquired last time, taking a window with a first detection result being burst signal data as a starting window for the signal data acquisition;
that is, when the signal data detection result in the existing window is image signal data, namely, the signal data acquisition work is started, burst signals are continuously acquired from the window in which the first detection result is burst signal data.
And under the condition that the detection result of the windows with the continuous preset number is not burst signal data, determining an ending window of signal data acquisition according to the windows with the continuous preset number.
The continuous preset number is empirically determined.
In a possible implementation manner, the window in which the burst signal is detected is marked as 1, the window in which the burst signal is not detected is marked as 0, if the windows of the continuous preset number are marked as 0, the burst signal disappears, and the current signal acquisition can be terminated.
Optionally, in the case that the signal data can continuously enter the buffer queue, after the continuous preset number of windows are marked as 0, the last window marked as 0 is taken as an end window.
Optionally, after the signal data in all windows are detected, when the next group of signal data enters the buffer queue, after the windows with the continuous preset number are marked as 0, the window with the last but one marked as 0 is used as an end window.
According to the burst signal acquisition method, the end window of data acquisition is determined according to the detection results of the continuous preset number, which are not windows of burst signal data, so that the influence of signal incoherence caused by signal fluctuation on burst signal acquisition is reduced as much as possible, the vanishing moment of the burst signal can be accurately detected, the data recording is stopped, and the burst signal can be acquired more completely.
The invention relates to a burst signal acquisition method, which further comprises the following steps:
determining the sampling time length corresponding to the buffer queue according to the length of the buffer queue and the sampling rate of the signal data;
the sampling duration is the time when the sampled signal data fills up a list of buffer queues, and is equal to the length L of the buffer queues divided by the sampling rate S.
Determining the number of windows corresponding to the cache queue according to the length of the cache queue and the steps of the windows;
the number of windows corresponding to the buffer queues, that is, the number of data frames for which signal detection needs to be completed in each buffer queue, is specifically L/Δn=l/(Δt×s).
And detecting whether the signal data in the window corresponding to the number of the windows is burst signal data or not in the sampling time length.
Under the condition that signal data can continuously enter a buffer queue, in order to realize real-time detection and nondestructive collection of burst signals, detection of the signal data of all windows needs to be completed within sampling time length corresponding to the buffer queue, so that the situation that the burst signals cannot be completely collected due to the fact that the burst signal data are covered by the subsequently entered signal data before the detection is completed is avoided.
That is, it is necessary to be able to complete the detection of the L/(Δt×s) data frame in the L/S time.
In the burst signal acquisition method, the maximum detection duration of each window is determined, so that the detection and acquisition of signal data in all windows are finished before the data in a buffer queue is covered, meanwhile, the accurate and efficient burst signal detection and identification and the recording of the burst signal data are achieved, the integrity of the burst signal acquisition is ensured, and the integrated solution of signal detection and data acquisition is realized.
In the burst signal acquisition method of the present invention, the step of detecting whether the signal data in each window in the buffer queue is burst signal data includes:
and detecting whether the signal data in each window in the buffer queue is burst signal data or not through a graphic processor, so that the detection duration of all windows in the buffer queue is smaller than the sampling duration.
In order to meet the requirement of the fast Fourier algorithm on the computational effort, the detection duration of each window is smaller than the maximum detection duration corresponding to each window, and in a feasible implementation mode, burst data detection is transplanted to a graphics processor to complete parallel operation, so that the detection duration of all windows in a cache queue is smaller than the sampling duration.
Specifically, after the signal data are collected, the fast Fourier operation is completed on the signal data in the graphic processor, the data transformation and the spectrum splicing are carried out on the result of the fast Fourier operation, and the starting window and the ending window are determined.
The burst signal acquisition method of the invention meets the requirement of time resolution by detecting whether the signal data in each window in the buffer queue is burst signal data in the graphic processor, so that the signal detection operation rate exceeds the data sampling rate.
The burst signal acquisition device provided by the invention is described below, and the burst signal acquisition device described below and the burst signal acquisition method described above can be referred to correspondingly.
As shown in fig. 4, the apparatus includes a detection module 401, a determination module 402, and an acquisition module 403, where:
a detection module 401, configured to store signal data into a buffer queue, and detect whether the signal data in each window in the buffer queue is burst signal data;
the burst signal detection and data recording are inseparable, in order to realize burst signal detection and identification and signal acquisition at the same time, a data buffer queue is preset, a plurality of windows are divided, and whether the signal data is burst signal data or not is detected in each window.
The present embodiment does not limit the type of window.
Alternatively, the window may be a scrolling window. Specifically, the cache queue is uniformly divided into a plurality of windows, each window is not overlapped with each other, and no interval exists between two adjacent windows. And detecting the signal data in each window in the buffer queue, and determining whether the signal data in each window is burst signal data.
Alternatively, the window may be a sliding window. Specifically, a buffer queue is divided into a plurality of windows with the same size by a certain fixed step, signal data in each window is detected in the buffer queue, and whether the signal data in each window is burst signal data is determined.
Wherein each window needs to be able to accommodate at least one complete signal acquisition of data.
The size of the cache queue is not limited in this embodiment. In one possible implementation, signal data sampled within 1 second is input into a buffer queue.
Alternatively, the cache queue may be one or more.
When the buffer queue is one, after the signal data in all windows are detected, the next group of signal data enters the buffer queue so as to avoid losing the signal data.
When the number of the buffer queues is multiple, the parallel processing technology can be adopted to detect the signal data in each window so as to realize the circulation of the data flow, so that the signal data can continuously enter the buffer queues, and the efficiency of signal acquisition is improved.
The parallel processing technique may be ping-pong buffer.
The detection method in this embodiment may be fourier transform, fast fourier transform, energy detection, or the like, and the detection method of the signal data in this embodiment is not limited.
A determining module 402, configured to determine a start window and an end window of signal data acquisition in each window according to a detection result corresponding to the window;
all windows from the start window to the end window together record and complete a complete burst signal.
In the buffer queue, the first window for detecting the burst signal is the initial window for data acquisition.
Optionally, the end window is located after the window in which the burst signal is not detected for the first time after the occurrence of the burst signal, so as to increase the integrity of the burst signal record.
And the acquisition module 403 is configured to acquire signal data from a start window to an end window in the buffer queue.
The signal data from the start window to the end window in the buffer queue together form a completed burst signal data.
Optionally, after the signal data detection in all windows is completed, under the condition that the next group of signal data enters the buffer queue, the burst signal data in the buffer queue is collected after the signal data detection in all windows in the buffer queue is completed.
Optionally, in the case of parallel detection of signal data in the window and acquisition of detected burst signal data, the burst signal data in the buffer queue is acquired in the order in which the windows detect the burst signal.
Firstly, burst signals are detected, and data acquisition is started; and then detecting the disappearance condition of the signal in real time in the acquisition process, and stopping acquisition after confirming the disappearance of the signal. And continuously inputting the signal data into a buffer queue, and determining an acquisition strategy while detecting until the whole signal data is processed.
According to the burst signal acquisition method, signal data are input into the buffer queue, detection of the signal data in each window is rapidly completed in the buffer queue through the arrangement of the windows, the speed of signal data detection is improved, and under the condition that burst signals are detected, the burst signal data temporarily stored in the buffer queue are completely acquired from the initial window to the end window; when the burst signal is detected, the signal data is still in the buffer queue, so that the nondestructive collection of the signal data at the occurrence time of the burst signal is realized under the unattended condition.
Fig. 5 illustrates a physical schematic diagram of an electronic device, as shown in fig. 5, which may include: processor 510, communication interface (Communications Interface) 520, memory 530, and communication bus 540, wherein processor 510, communication interface 520, memory 530 complete communication with each other through communication bus 540. Processor 510 may invoke logic instructions in memory 530 to perform a burst signal acquisition method comprising: storing signal data into a buffer queue, and detecting whether the signal data in each window in the buffer queue is burst signal data or not; determining a start window and an end window of signal data acquisition in each window according to a detection result corresponding to each window; and collecting signal data from a start window to an end window in the buffer queue.
Further, the logic instructions in the memory 530 described above may be implemented in the form of software functional units and may be stored in a computer-readable storage medium when sold or used as a stand-alone product. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
In yet another aspect, the present invention further provides a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, is implemented to perform the burst signal acquisition method provided by the above methods, the method comprising: storing signal data into a buffer queue, and detecting whether the signal data in each window in the buffer queue is burst signal data or not; determining a start window and an end window of signal data acquisition in each window according to a detection result corresponding to each window; and collecting signal data from a start window to an end window in the buffer queue.
The apparatus embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
From the above description of the embodiments, it will be apparent to those skilled in the art that the embodiments may be implemented by means of software plus necessary general hardware platforms, or of course may be implemented by means of hardware. Based on this understanding, the foregoing technical solution may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a computer readable storage medium, such as ROM/RAM, a magnetic disk, an optical disk, etc., including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method described in the respective embodiments or some parts of the embodiments.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. The burst signal acquisition method is characterized by comprising the following steps:
storing signal data into a buffer queue, and detecting whether the signal data in each window in the buffer queue is burst signal data or not;
determining a start window and an end window of signal data acquisition in each window according to a detection result corresponding to each window;
collecting signal data from a start window to an end window in the buffer queue;
before the step of storing the signal data into the buffer queue and detecting whether the signal data in each window in the buffer queue is burst signal data, the method further comprises:
determining the width of the window according to the sampling rate of the signal data and the preset frequency resolution of the burst signal data detection;
determining the step of the window according to the sampling rate of the signal data and the preset time resolution of the burst signal data detection;
wherein the number of the cache queues is multiple.
2. The burst signal acquisition method as claimed in claim 1, wherein the step of detecting whether the signal data in each window in the buffer queue is burst signal data comprises:
performing fast Fourier transform and spectrum splicing on the signal data in each window to obtain spectrum data of the signal data;
comparing each spectrum data corresponding to each window with a first preset threshold value, and counting the number of spectrum data which is larger than the first preset threshold value and corresponds to each window;
and under the condition that the number of the frequency spectrum data is larger than a second preset threshold value, determining the signal data in the window as burst signal data.
3. The method for collecting burst signals according to claim 2, wherein determining that the signal data in the window is burst signal data when the number of the spectrum data is greater than a second preset threshold value comprises:
extracting the characteristics of the signal data in each window, and matching the characteristics of the signal data with the characteristics of the target burst signal;
and under the condition that the characteristics of the signal data and the characteristics of the target burst signal are successfully matched and the number of the frequency spectrum data is larger than a second preset threshold value, determining the signal data in the window as burst signal data.
4. A burst signal acquisition method as claimed in any one of claims 1 to 3, wherein the step of determining a start window and an end window of signal data acquisition in the windows according to the detection result corresponding to each window comprises:
after the signal data is acquired last time, taking a window with a first detection result being burst signal data as a starting window for the signal data acquisition;
and under the condition that the detection result of the windows with the continuous preset number is not burst signal data, determining an ending window of signal data acquisition according to the windows with the continuous preset number.
5. A burst signal acquisition method according to any one of claims 1-3, further comprising:
determining the sampling time length corresponding to the buffer queue according to the length of the buffer queue and the sampling rate of the signal data;
determining the number of windows corresponding to the cache queue according to the length of the cache queue and the steps of the windows;
and detecting whether the signal data in the window corresponding to the number of the windows is burst signal data or not in the sampling time length.
6. The burst signal acquisition method as claimed in claim 5, wherein the step of detecting whether the signal data in each window in the buffer queue is burst signal data comprises:
and detecting whether the signal data in each window in the buffer queue is burst signal data or not through a graphic processor, so that the detection duration of all windows in the buffer queue is smaller than the sampling duration.
7. A burst signal acquisition device, comprising:
the detection module is used for storing the signal data into a buffer queue and detecting whether the signal data in each window in the buffer queue is burst signal data or not;
the determining module is used for determining a starting window and an ending window of signal data acquisition in each window according to the detection result corresponding to each window;
the acquisition module is used for acquiring signal data from a start window to an end window in the buffer queue;
the device also comprises a selection module, a control module and a control module, wherein the selection module is used for determining the width of the window according to the sampling rate of the signal data and the preset frequency resolution of the burst signal data detection;
determining the step of the window according to the sampling rate of the signal data and the preset time resolution of the burst signal data detection;
wherein the number of the cache queues is multiple.
8. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the burst signal acquisition method according to any one of claims 1 to 6 when the program is executed by the processor.
9. A non-transitory computer readable storage medium having stored thereon a computer program, which when executed by a processor implements the burst signal acquisition method according to any one of claims 1 to 6.
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