Multi-dimensional controllable composite pulse laser control method and controller

Abstract

The invention relates to a multi-dimensional controllable composite pulse laser control method and a controller, and the method comprises the steps: combining a plurality of target pulses into a composite pulse signal, and controlling a laser to work through the composite pulse signal; the target pulse is obtained by the following steps: respectively sending out preset pulse signals through two pulse generators, wherein the pulse signals are a first pulse signal and a second pulse signal; processing the first pulse signal and the second pulse signal through differential phase delay to obtain a target pulse signal; and performing amplitude adjustment on the target pulse signal according to a preset value. The method can be applied to a high-beam-quality signal light seed source part of a pulse laser, can freely output a plurality of pulse composite signals with different amplitudes, adjusts the pulse width and phase of each sub-pulse in the composite signals, has the amplitude monitoring and feedback compensation functions of the output composite pulses, and can be applied to the high-beam-quality signal light seed source part of the pulse laser. And light pulse intensity attenuation caused by peripheral factors can be quickly compensated.

Description

Technical Field

[0001] The present disclosure relates to a control method and a controller for a multi-dimensional controllable composite pulse laser, belonging to the technical field of pulse laser control. Background Art

[0002] In the field of laser control, the existing technology has few applications for MOPA (Master Oscillator Power-Amplifier) lasers in adjustable composite pulses. Mainly, the analog characteristics of semiconductor diodes are used to achieve pulse signals with narrow pulse widths, but this method cannot arbitrarily adjust the number of Burst pulses, nor can it freely change the amplitude of each Burst sub-pulse.

[0003] The patent document with the application number CN202210850737.7 discloses a high-speed variable pulse width and amplitude signal synthesis circuit, which can achieve free adjustment of multiple composite pulses to a certain extent. However, the pulse adjustment resolution is limited by the FPGA clock main frequency and cannot achieve adjustment higher than the clock resolution. In addition, this method only realizes the output of variable pulse width signals and cannot monitor the intensity of the output signals. If the amplitude of the signal pulses decays due to external influences, only manual correction of each pulse in the pulse sequence can be carried out, and automatic compensation for the composite pulses cannot be achieved. Summary of the Invention

[0004] In order to overcome the above problems, the present disclosure provides a control method and a controller for a multi-dimensional controllable composite pulse laser.

[0005] The technical solution of the present disclosure is as follows:

[0006] In a first aspect, a control method for a multi-dimensional controllable composite pulse laser includes:

[0007] Combining a plurality of target pulses into a composite pulse signal, and controlling the operation of the laser through the composite pulse signal;

[0008] The target pulses are obtained in the following manner:

[0009] Sending preset pulse signals through two pulse generators, where the pulse signals are a first pulse signal and a second pulse signal;

[0010] Processing the first pulse signal and the second pulse signal through differential phase delay to obtain a target pulse signal;

[0011] Adjusting the amplitude of the target pulse signal according to a preset value.

[0012] Further, it further includes:

[0013] Collecting the composite pulse signal;

[0014] After amplifying and shaping the composite pulse signal, perform analog-to-digital sampling through a multi-channel high-speed ADC circuit to obtain multi-channel pulse digital signals;

[0015] After combining and denoising the multi-channel pulse digital signals, extract the target optical pulse data;

[0016] Obtain the pulse amplitude of the target optical pulse data, compare the pulse amplitude of the composite pulse signal to be output with the actually detected pulse amplitude, calculate the feedback compensation amount, and adjust the amplitude of the target pulse signal through the feedback compensation amount.

[0017] Further, process the first pulse signal and the second pulse signal through differential phase delay to obtain a target pulse signal, specifically:

[0018] The first pulse signal and the second pulse signal are two pulse signals with the same pulse width, amplitude, start and end times, and opposite pulse directions;

[0019] Delay the first pulse signal or the second pulse signal by a preset duration, and the preset duration is the pulse width of the target pulse signal;

[0020] Combine the first pulse signal or the second pulse signal to obtain the target pulse signal.

[0021] Further, perform analog-to-digital sampling through a multi-channel high-speed ADC circuit to obtain multi-channel pulse digital signals, specifically:

[0022] Perform analog-to-digital sampling through 4 high-speed ADC circuits. During sampling, the 4 high-speed ADC circuits respectively perform polling sampling with a time lag of 0.25T, where T is the minimum sampling period of the high-speed ADC circuit.

[0023] In a second aspect, a controller for a multi-dimensional controllable composite pulse laser, characterized by comprising a composite pulse signal unit, and the composite pulse signal unit includes a plurality of single-pulse output circuits and a signal combining circuit;

[0024] The single-pulse output circuit includes a first pulse generator, a second pulse generator, a differential phase delay unit, and an amplitude adjustment circuit;

[0025] The first pulse generator and the second pulse generator output a first pulse signal and a second pulse signal according to a preset manner;

[0026] The differential phase delay unit obtains a target pulse according to the first pulse signal and the second pulse signal;

[0027] The amplitude adjustment circuit adjusts the target pulse in a preset manner;

[0028] The signal combining circuit combines the pulse signals output by each single pulse output circuit into a composite pulse signal.

[0029] Further, it also includes a high-speed laser detector and a composite pulse feedback unit;

[0030] The high-speed laser detector is used to collect the composite pulse signal and transmit it to the composite pulse feedback unit;

[0031] The composite pulse feedback unit includes an amplification and shaping circuit, several high-speed ADC circuits, a signal preprocessing unit, a pulse extraction unit, a pulse amplitude detection unit, and a feedback compensation unit;

[0032] The amplification and shaping circuit amplifies and shapes the composite pulse signal and transmits it to the high-speed ADC circuit;

[0033] The high-speed ADC circuit performs analog-to-digital sampling on the composite pulse signal to obtain a sampled pulse digital signal and transmits it to the signal preprocessing unit;

[0034] The signal preprocessing unit combines and denoises the pulse digital signal and transmits it to the pulse extraction unit;

[0035] The pulse extraction unit separates the target optical pulse data from the pulse digital signal and transmits it to the pulse amplitude detection unit;

[0036] The pulse amplitude detection unit extracts the pulse intensity of the target optical pulse data to obtain a pulse amplitude and transmits it to the feedback compensation unit;

[0037] The feedback compensation unit compares the amplitude of the composite pulse to be output with the actually detected pulse amplitude, calculates a feedback compensation amount, and the feedback compensation amount is used to correct the composite pulse signal output by the composite pulse signal unit.

[0038] Further, the composite pulse signal unit also includes a parameter register for receiving preset parameters of the composite pulse signal to be output;

[0039] The parameter register controls the pulse generator to emit a pulse signal according to the preset parameters of the composite pulse signal to be output;

[0040] The parameter register controls the differential phase delay unit to output a target pulse according to the preset parameters of the composite pulse signal to be output.

[0041] Further, the composite pulse signal unit also includes an amplitude controller;

[0042] The amplitude controller obtains the preset parameters of the composite pulse signal to be output from the parameter register, and controls the amplitude adjustment circuit to output the target pulse required for the composite pulse signal to be output according to the preset parameters of the composite pulse signal to be output.

[0043] Further, the differential phase delay unit obtains a target pulse according to the first pulse signal and the second pulse signal, specifically:

[0044] The first pulse signal and the second pulse signal are two pulse signals with the same pulse width, amplitude, start and end times, and opposite pulse directions;

[0045] Delay the first pulse signal or the second pulse signal by a preset duration, and the preset duration is the pulse width of the target pulse signal;

[0046] Combine the first pulse signal or the second pulse signal to obtain the target pulse signal.

[0047] Further, the high-speed ADC circuit performs analog-to-digital sampling on the composite pulse signal to obtain a sampled pulse digital signal, specifically:

[0048] Perform analog-to-digital sampling on the composite pulse signal through 4 high-speed ADC circuits. During sampling, the 4 high-speed ADC circuits respectively perform polling sampling with a time lag of 0.25T, where T is the minimum sampling period of the high-speed ADC circuit.

[0049] The present disclosure has the following beneficial effects:

[0050] This disclosure can be applied to the high-beam-quality signal light seed source part of a pulsed laser, can freely output multiple pulse composite signals with different amplitudes, adjust the pulse width and phase of each sub-pulse in the composite signal, has the function of amplitude monitoring and feedback compensation for the output composite pulse, and can quickly compensate for the attenuation of the optical pulse intensity caused by peripheral factors. Description of the Drawings

[0051] Figure 1 It is a schematic diagram of the modules of an embodiment of the present disclosure.

[0052] Figure 2 It is a control diagram of the target pulse signal of an embodiment of the present disclosure.

[0053] Figure 3 It is a schematic diagram of polling sampling of an embodiment of the present disclosure. Detailed Embodiments

[0054] In order to make the objectives, technical solutions, and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present disclosure without creative efforts shall fall within the scope of protection of the present disclosure.

[0055] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure shall have the ordinary meanings understood by those of ordinary skill in the art to which the present disclosure pertains. The terms "first", "second", and similar terms used in the present disclosure do not denote any order, quantity, or importance, but are only used to distinguish different components. The terms such as "including" or "comprising" mean that the elements or items appearing before this word cover the elements or items listed after this word and their equivalents, without excluding other elements or items. The terms such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms such as "upper", "lower", "left", "right", etc. are only used to represent relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly. To keep the following description of the embodiments of the present disclosure clear and concise, the detailed descriptions of some known functions and known components are omitted in the present disclosure.

[0056] The present disclosure will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0057] In a first aspect, referring to Figure 1 , a control method for a multi-dimensional controllable composite pulse laser includes:

[0058] Combining a plurality of target pulses into a composite pulse signal, and controlling the operation of a laser through the composite pulse signal;

[0059] The target pulses are obtained through the following steps:

[0060] Sending preset pulse signals through two pulse generators, where the pulse signals are a first pulse signal and a second pulse signal;

[0061] Processing the first pulse signal and the second pulse signal through differential phase delay to obtain a target pulse signal;

[0062] Adjusting the amplitude of the target pulse signal according to a preset value.

[0063] In an implementation manner of the present invention, it further includes:

[0064] Collecting the composite pulse signal;

[0065] After amplifying and shaping the composite pulse signal, perform analog-to-digital sampling through a multi-channel high-speed ADC circuit to obtain multi-channel pulse digital signals;

[0066] After combining and denoising the multi-channel pulse digital signals, extract the target optical pulse data;

[0067] Obtain the pulse amplitude of the target optical pulse data, compare the pulse amplitude of the composite pulse signal to be output with the actually detected pulse amplitude, calculate the feedback compensation amount, and adjust the amplitude of the target pulse signal through the feedback compensation amount.

[0068] Reference Figure 2 , in an embodiment of the present invention, the first pulse signal and the second pulse signal are processed through differential phase delay to obtain a target pulse signal, specifically:

[0069] The first pulse signal and the second pulse signal are two pulse signals with the same pulse width, amplitude, start and end times, and opposite pulse directions;

[0070] Delay the first pulse signal or the second pulse signal by a preset duration, and the preset duration is the pulse width of the target pulse signal;

[0071] Combine the first pulse signal or the second pulse signal to obtain the target pulse signal.

[0072] In an embodiment of the present invention, perform analog-to-digital sampling through a multi-channel high-speed ADC circuit to obtain multi-channel pulse digital signals, specifically:

[0073] Perform analog-to-digital sampling through 4 high-speed ADC circuits. During sampling, the 4 high-speed ADC circuits perform polling sampling with a time lag of 0.25T respectively, where T is the minimum sampling period of the high-speed ADC circuit.

[0074] In a second aspect, reference Figure 1 , a controller for a multi-dimensional controllable composite pulse laser, characterized in that it includes a composite pulse signal unit, and the composite pulse signal unit includes a plurality of single-pulse output circuits and a signal combining circuit;

[0075] The single-pulse output circuit includes a first pulse generator, a second pulse generator, a differential phase delay unit, and an amplitude adjustment circuit;

[0076] The first pulse generator and the second pulse generator output a first pulse signal and a second pulse signal according to a preset manner;

[0077] The differential phase delay unit obtains a target pulse according to the first pulse signal and the second pulse signal;

[0078] The amplitude adjustment circuit adjusts the target pulse in a preset manner;

[0079] The signal combining circuit combines the pulse signals output by each single-pulse output circuit into a composite pulse signal.

[0080] In an embodiment of the present invention, it further includes a high-speed laser detector and a composite pulse feedback unit;

[0081] The high-speed laser detector is used to collect the composite pulse signal and transmit it to the composite pulse feedback unit;

[0082] The composite pulse feedback unit includes an amplification and shaping circuit, a plurality of high-speed ADC circuits, a signal preprocessing unit, a pulse extraction unit, a pulse amplitude detection unit, and a feedback compensation unit;

[0083] The amplification and shaping circuit amplifies and shapes the composite pulse signal and transmits it to the high-speed ADC circuit;

[0084] The high-speed ADC circuit performs analog-to-digital sampling on the composite pulse signal to obtain a sampled pulse digital signal and transmits it to the signal preprocessing unit;

[0085] The signal preprocessing unit combines and denoises the pulse digital signal and transmits it to the pulse extraction unit;

[0086] The pulse extraction unit separates the target optical pulse data from the pulse digital signal and transmits it to the pulse amplitude detection unit;

[0087] The pulse amplitude detection unit extracts the pulse intensity of the target optical pulse data to obtain a pulse amplitude and transmits it to the feedback compensation unit;

[0088] The feedback compensation unit compares the amplitude of the composite pulse to be output with the actually detected pulse amplitude, calculates a feedback compensation amount, and the feedback compensation amount is used to correct the composite pulse signal output by the composite pulse signal unit.

[0089] In an embodiment of the present invention, the composite pulse signal unit further includes a parameter register for receiving preset parameters of the composite pulse signal to be output;

[0090] The parameter register controls the pulse generator to emit a pulse signal according to the preset parameters of the composite pulse signal to be output;

[0091] The parameter register controls the differential phase delay unit to output a target pulse according to the preset parameters of the composite pulse signal to be output.

[0092] In an embodiment of the present invention, the composite pulse signal unit further includes an amplitude controller;

[0093] The amplitude controller obtains the preset parameters of the composite pulse signal to be output from the parameter register, and controls the amplitude adjustment circuit to output the target pulse required for the composite pulse signal to be output according to the preset parameters of the composite pulse signal to be output.

[0094] Reference Figure 2 , in an embodiment of the present invention, the differential phase delay unit obtains the target pulse according to the first pulse signal and the second pulse signal, specifically:

[0095] The first pulse signal and the second pulse signal are two pulse signals with the same pulse width, amplitude, start and end times, and opposite pulse directions;

[0096] Delay the first pulse signal or the second pulse signal by a preset duration, and the preset duration is the pulse width of the target pulse signal;

[0097] Merge the first pulse signal or the second pulse signal to obtain the target pulse signal.

[0098] In an embodiment of the present invention, the high-speed ADC circuit performs analog-to-digital sampling on the composite pulse signal to obtain a sampled pulse digital signal, specifically:

[0099] Perform analog-to-digital sampling on the composite pulse signal through 4 high-speed ADC circuits. During sampling, the 4 high-speed ADC circuits respectively poll and sample with a time lag of 0.25T, where T is the minimum sampling period of the high-speed ADC circuit.

[0100] As Figure 3 shown, the 4 high-speed ADC circuits respectively perform polling sampling on the optical pulse signal at intervals of T. Among them, the sampling phase of the Nth ADC lags behind the phase of the (N-1)th ADC by 0.25T time, so as to obtain a sampling effect with a resolution of 0.25T and no overlapping sampling within T. The signal preprocessing unit fills the sampling data of the 4 ADCs into the data buffer area in time order, so as to obtain waveform sampling data with a resolution of 0.25T, and further restore the details of the pulse waveform.

[0101] The flowcharts and block diagrams in the accompanying drawings illustrate the possible architectures, functions, and operations of systems, methods, and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagram may represent a module, a segment of a program, or a part of code that contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the blocks may occur in a different order than that marked in the accompanying drawings. For example, two consecutive blocks shown may actually be executed substantially in parallel, and they may sometimes be executed in the reverse order, depending on the functions involved. It should also be noted that each block in the block diagram and / or flowchart, as well as combinations of blocks in the block diagram and / or flowchart, can be implemented by a dedicated hardware-based system that performs the specified functions or operations, or can be implemented by a combination of dedicated hardware and computer instructions.

[0102] The units involved in the embodiments described in the present disclosure can be implemented in software or in hardware. Among them, the name of the unit does not constitute a limitation on the unit itself in some cases.

[0103] The functions described above can be performed at least in part by one or more hardware logic components. For example, without limitation, exemplary types of hardware logic components that can be used include: Field Programmable Gate Arrays (FPGAs), Application Specific Integrated Circuits (ASICs), Application Specific Standard Products (ASSPs), Systems on Chip (SOCs), Complex Programmable Logic Devices (CPLDs), and so on.

[0104] The above description is only for the preferred embodiments of the present disclosure and the explanation of the applied technical principles. Those skilled in the art should understand that the scope of the disclosure involved in the present disclosure is not limited to the technical solutions formed by the specific combination of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above disclosure concept. For example, the technical solutions formed by mutually replacing the above features with the (but not limited to) technical features having similar functions disclosed in the present disclosure.

[0105] In addition, although the operations are depicted in a particular order, this should not be construed as requiring that the operations be performed in the particular order shown or in a sequential order. In certain circumstances, multitasking and parallel processing may be advantageous. Similarly, although several specific implementation details are included in the foregoing description, these should not be construed as limiting the scope of the present disclosure. Certain features described in the context of separate embodiments may also be implemented in combination in a single embodiment. Conversely, the various features described in the context of a single embodiment may also be implemented separately or in any suitable sub-combination in multiple embodiments.

[0106] Although the subject matter has been described in language specific to structural features and / or methodological acts, it should be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or acts described above. On the contrary, the specific features and acts described above are merely example forms of implementing the claims.

[0107] For the present disclosure, the following points also need to be noted:

[0108] (1) The drawings of the embodiments of the present disclosure only relate to the structures involved in the embodiments of the present disclosure, and other structures may refer to the general design.

[0109] (2) Without conflict, the embodiments of the present disclosure and the features in the embodiments may be combined with each other to obtain new embodiments.

[0110] The above are only the embodiments of the present disclosure, and do not limit the patent scope of the present disclosure accordingly. Any equivalent structures made by using the specification and drawings of the present disclosure, directly or indirectly applied in other related technical fields, are equally included in the patent protection scope of the present disclosure.

Claims

1. A control method for a multi-dimensional controllable composite pulse laser, characterized in that, Comprising: Combining a plurality of target pulses into a composite pulse signal, and controlling the operation of the laser through the composite pulse signal; The target pulses are obtained by the following method: Sending preset pulse signals through two pulse generators, and the pulse signals are a first pulse signal and a second pulse signal; Processing the first pulse signal and the second pulse signal through differential phase delay to obtain a target pulse signal; Adjusting the amplitude of the target pulse signal according to a preset value.

2. The control method of the multi-dimensional controllable composite pulse laser according to claim 1, characterized in that, Further comprising: Collecting the composite pulse signal; After amplifying and shaping the composite pulse signal, performing analog-to-digital sampling through a multi-channel high-speed ADC circuit to obtain multi-channel pulse digital signals; After combining and denoising the multi-channel pulse digital signals, extracting target optical pulse data; Obtaining the pulse amplitude of the target optical pulse data, comparing the pulse amplitude of the composite pulse signal to be output with the actually detected pulse amplitude, calculating a feedback compensation amount, and adjusting the amplitude of the target pulse signal through the feedback compensation amount.

3. The control method of the multi-dimensional controllable composite pulse laser according to claim 1 or 2, characterized in that Processing the first pulse signal and the second pulse signal through differential phase delay to obtain a target pulse signal, specifically: The first pulse signal and the second pulse signal are two pulse signals with the same pulse width, amplitude, start and end times, and opposite pulse directions; Delaying the first pulse signal or the second pulse signal by a preset duration, and the preset duration is the pulse width of the target pulse signal; Combining the first pulse signal or the second pulse signal to obtain the target pulse signal.

4. The control method of the multi-dimensional controllable composite pulse laser according to claim 1 or 2, characterized in that Performing analog-to-digital sampling through a multi-channel high-speed ADC circuit to obtain multi-channel pulse digital signals, specifically: Performing analog-to-digital sampling through 4 high-speed ADC circuits. During sampling, the 4 high-speed ADC circuits respectively perform polling sampling with a time lag of 0.25T, where T is the minimum sampling period of the high-speed ADC circuit.

5. A controller for a multi-dimensional controllable composite pulse laser, characterized in that, Including a composite pulse signal unit, and the composite pulse signal unit includes a plurality of single-pulse output circuits and a signal combining circuit; The single-pulse output circuit includes a first pulse generator, a second pulse generator, a differential phase delay unit, and an amplitude adjustment circuit; The first pulse generator and the second pulse generator output a first pulse signal and a second pulse signal according to a preset manner; The differential phase delay unit obtains a target pulse according to the first pulse signal and the second pulse signal; The amplitude adjustment circuit adjusts the target pulse according to a preset manner; The signal combining circuit combines the pulse signals output by each single-pulse output circuit into a composite pulse signal.

6. The controller of the multi-dimensional controllable composite pulse laser according to claim 5, characterized in that, Further including a high-speed laser detector and a composite pulse feedback unit; The high-speed laser detector is used to collect the composite pulse signal and transmit it to the composite pulse feedback unit; The composite pulse feedback unit includes an amplification and shaping circuit, a plurality of high-speed ADC circuits, a signal preprocessing unit, a pulse extraction unit, a pulse amplitude detection unit, and a feedback compensation unit; The amplification and shaping circuit amplifies and shapes the composite pulse signal and transmits it to the high-speed ADC circuit; The high-speed ADC circuit performs analog-to-digital sampling on the composite pulse signal to obtain a sampled pulse digital signal, and transmits it to the signal preprocessing unit; The signal preprocessing unit performs merging and denoising processing on the pulse digital signal, and transmits it to the pulse extraction unit; The pulse extraction unit separates target optical pulse data from the pulse digital signal, and transmits it to the pulse amplitude detection unit; The pulse amplitude detection unit extracts the pulse intensity of the target optical pulse data to obtain a pulse amplitude, and transmits it to the feedback compensation unit; The feedback compensation unit compares the amplitude of the composite pulse to be output with the actually detected pulse amplitude, calculates a feedback compensation amount, and the feedback compensation amount is used to correct the composite pulse signal output by the composite pulse signal unit.

7. The controller of the multi-dimensional controllable composite pulse laser according to claim 5 or 6, characterized in that, The composite pulse signal unit further includes a parameter register for receiving preset parameters of the composite pulse signal to be output; The parameter register controls the pulse generator to generate a pulse signal according to the preset parameters of the composite pulse signal to be output; The parameter register controls the differential phase delay unit to output a target pulse according to the preset parameters of the composite pulse signal to be output.

8. The controller of the multi-dimensional controllable composite pulse laser according to claim 5 or 6, characterized in that, The composite pulse signal unit further includes an amplitude controller; The amplitude controller obtains the preset parameters of the composite pulse signal to be output from the parameter register, and controls the amplitude adjustment circuit to output the target pulse required for the composite pulse signal to be output according to the preset parameters of the composite pulse signal to be output.

9. The controller of the multi-dimensional controllable composite pulse laser according to claim 5 or 6, characterized in that, The differential phase delay unit obtains a target pulse according to the first pulse signal and the second pulse signal, specifically: The first pulse signal and the second pulse signal are two pulse signals with the same pulse width, amplitude, start and end times, and opposite pulse directions; Delay the first pulse signal or the second pulse signal by a preset duration, and the preset duration is the pulse width of the target pulse signal; Merge the first pulse signal or the second pulse signal to obtain the target pulse signal.

10. The controller of the multi-dimensional controllable composite pulse laser according to claim 5 or 6, characterized in that, The high-speed ADC circuit performs analog-to-digital sampling on the composite pulse signal to obtain a sampled pulse digital signal, specifically: Perform analog-to-digital sampling on the composite pulse signal through 4 high-speed ADC circuits. During sampling, the 4 high-speed ADC circuits respectively perform polling sampling with a time lag of 0.25T, where T is the minimum sampling period of the high-speed ADC circuit.

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