Laser wind lidar and its measuring method and device
By setting equidistant gates in the laser wind radar and acquiring sampling data through translational loops, and then stitching the data together, the problem of insufficient measurement data was solved, and the measurement range and accuracy were improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-12-16
- Publication Date
- 2026-03-17
AI Technical Summary
The data acquired by existing laser wind radar cannot meet the requirements, resulting in insufficient measurement data.
By setting equidistant gates, sampling data is obtained cyclically. The starting position of the equidistant gates is shifted by one unit length until n sets of sampling data are obtained. Then, the initial position is restored and the next loop is performed. The n sets of sampling data are then spliced together according to the position of the equidistant gates.
It increases the measurement range and accuracy, enabling the acquisition of broader and more precise wind measurement data.
Smart Images
Figure CN115963470B_ABST
Abstract
Description
Technical Field
[0001] This disclosure relates to the field of lidar technology, and in particular to lidar wind measurement radar and its measurement method. Background Technology
[0002] Laser wind radar is an atmospheric detection instrument used in the fields of power and electrical engineering and energy science and technology. It features small detection blind zone, high accuracy, high stability, small size and light weight. It is mainly used in air pollution tracking, atmospheric research, meteorological and climate monitoring, airport weather detection and wind energy utilization.
[0003] Laser wind-measuring radar uses a laser as a light source to emit pulsed laser light into the atmosphere. The laser interacts with atmospheric aerosol particles, producing backscattering. Based on the radar's range resolution requirements, equidistant range gates are used to acquire sampled data of the echo time-domain signal. A Fast Fourier Transform is then performed on the sampled data from each range gate to obtain a frequency estimate. Finally, the radial wind speed is calculated using the Doppler frequency shift formula. However, existing technologies suffer from the problem that the data acquired by laser wind-measuring radar cannot meet the required standards. Summary of the Invention
[0004] To overcome the problems existing in related technologies, this disclosure provides a laser wind-measuring radar and its measurement method. The technical solution is as follows:
[0005] According to a first aspect of the present disclosure, a measurement method for a laser wind-measuring radar is provided, comprising:
[0006] Set up equidistant doors, with each door having a width of n units.
[0007] Starting from the initial position of the equidistant gate, sampling data is acquired cyclically. For each set of sampling data acquired, the initial position of the equidistant gate is shifted one unit length in the direction of laser emission. After acquiring n sets of sampling data, the initial position of the equidistant gate is restored to the initial position, and the next cycle begins. Here, n is a positive integer greater than or equal to 1.
[0008] The n sets of sampled data are spliced together according to the positions of the gates at equal intervals;
[0009] The spliced sampled data is output as the measurement data of the measured object.
[0010] In one embodiment, the laser wind-measuring radar includes an FPGA and a host computer, wherein:
[0011] The FPGA cyclically acquires sampled data and uploads it to the host computer.
[0012] The host computer receives the sampling data uploaded by the FPGA, splices it, and outputs the spliced sampling data.
[0013] In one embodiment, the FPGA uploads the acquired sampling data to the host computer after acquiring each set of sampling data; the host computer then outputs the concatenated sampling data via convolution.
[0014] In one embodiment, the convolutional output of the host computer includes the concatenated sampled data, comprising:
[0015] Each time the host computer receives a set of sampled data uploaded by the FPGA, it concatenates the set of sampled data with the previously received n-1 sets of sampled data and outputs the result.
[0016] According to a second aspect of the present disclosure, a measuring device for a laser wind-measuring radar is provided, comprising:
[0017] The settings module is used to set equidistant doors, with each door having a width of n units.
[0018] The acquisition module is used to cyclically acquire sampling data starting from the initial position of the equidistant gate. Each time a set of sampling data is acquired, the initial position of the equidistant gate is shifted one unit length in the direction of laser emission. After acquiring n sets of sampling data, the initial position of the equidistant gate is restored to the initial position, and the next loop is performed. Here, n is a positive integer greater than or equal to 1.
[0019] The splicing module is used to splice n sets of sampled data according to the positions of the gate at equal intervals;
[0020] The output module is used to output the spliced sampled data as the measurement data of the measured object.
[0021] According to a third aspect of the present disclosure, a measuring device for a laser wind-measuring radar is provided, comprising:
[0022] processor;
[0023] Memory used to store processor-executable instructions;
[0024] The processor is configured as follows:
[0025] Set up equidistant doors, with each door having a width of n units.
[0026] Starting from the initial position of the equidistant gate, sampling data is acquired cyclically. For each set of sampling data acquired, the initial position of the equidistant gate is shifted one unit length in the direction of laser emission. After acquiring n sets of sampling data, the initial position of the equidistant gate is restored to the initial position, and the next cycle begins. Here, n is a positive integer greater than or equal to 1.
[0027] The n sets of sampled data are spliced together according to the positions of the gates at equal intervals;
[0028] The spliced sampled data is output as the measurement data of the measured object.
[0029] According to a fourth aspect of the present disclosure, a computer-readable storage medium is provided that stores computer instructions thereon, which, when executed by a processor, implement the steps of the above-described method.
[0030] According to a fifth aspect of the present disclosure, a laser wind-measuring radar is provided, comprising:
[0031] An FPGA is used to set equidistant gates, each with a width of n units. Starting from the initial position of each equidistant gate, sampling data is acquired cyclically. For each set of sampling data acquired, the initial position of the equidistant gate is shifted one unit in the laser emission direction until n sets of sampling data are acquired. Then, the initial position of the equidistant gate is restored to its initial position, and the next cycle begins. Here, n is a positive integer greater than or equal to 1. The acquired sampling data is then uploaded to a host computer.
[0032] The host computer is used to stitch together n sets of sampled data according to the positions of the gate at equal distances; and output the stitched sampled data as the measurement data of the measured object.
[0033] In one embodiment, the FPGA is used to upload the acquired sampled data to the host computer after acquiring each set of sampled data; the host computer is used to convolve and output the spliced sampled data.
[0034] In one embodiment, the host computer is used to concatenate each set of sampled data received from the FPGA with the previously received n-1 sets of sampled data and then output the result.
[0035] The technical solution of this invention has the following beneficial effects: by translating and cyclically acquiring sampling data from gates that were originally fixed in position and number, the overall measurement range is increased due to the translation of the gates. Furthermore, for the same time domain location, multiple sampling data are stitched together, thus increasing accuracy. This measurement scheme increases both the measurement range and accuracy, resulting in broader and more precise wind measurement data.
[0036] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description
[0037] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.
[0038] Figure 1 This is a flowchart illustrating a measurement method for a laser wind-measuring radar according to an exemplary embodiment.
[0039] Figure 2 This is a schematic diagram of an equidistant distance gate in a lidar measurement method according to an exemplary embodiment.
[0040] Figure 3 This is a schematic diagram illustrating the acquisition of sampled data according to an exemplary embodiment.
[0041] Figure 4 This is a schematic diagram illustrating the acquisition of sampled data by an FPGA according to an exemplary embodiment.
[0042] Figure 5 This is a schematic diagram illustrating the splicing of sampled data by a host computer according to an exemplary embodiment.
[0043] Figure 6 This is a flowchart illustrating a measurement method for a laser wind-measuring radar according to an exemplary embodiment.
[0044] Figure 7 This is a block diagram illustrating a measuring device for a laser wind-measuring radar according to an exemplary embodiment.
[0045] Figure 8 This is a block diagram illustrating a measuring device for a laser wind-measuring radar according to an exemplary embodiment.
[0046] Figure 9 This is a block diagram illustrating a laser wind-measuring radar according to an exemplary embodiment. Detailed Implementation
[0047] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.
[0048] Current laser wind radar technology for detecting wind speed typically uses equidistant gates to divide the echo time-domain signal when acquiring the echo signal. However, using fixed equidistant gates can lead to insufficient measurement data.
[0049] To overcome the problems existing in related technologies, this disclosure proposes a measurement method for a laser wind measuring radar. This method can be executed by a data processing module within the laser wind measuring radar. Figure 1 This is a flowchart illustrating a measurement method for a laser wind-measuring radar according to an exemplary embodiment, such as... Figure 1 As shown, the method includes the following steps S101-S104:
[0050] In step S101, equidistant gates are set, with each gate having a width of n units.
[0051] like Figure 2 The diagram illustrates the process of acquiring echo signal sampling data using equidistant gates. In one embodiment, four equidistant gates are initially set, each with a width of n units. In one sampling operation, a set of sampling data is obtained through the four equidistant gates, as shown below. Figure 2 The distance gate sampling segments are 1, 2, 3, and 4. In practical applications, the unit length of the equidistant distance gates reflects the detection accuracy. The smaller the unit length of the equidistant distance gate, the higher the detection accuracy; conversely, the larger the unit length of the equidistant distance gate, the lower the detection accuracy.
[0052] In step S102, starting from the initial position of the equidistant gate, sampling data is acquired cyclically. For each set of sampling data acquired, the initial position of the equidistant gate is shifted one unit length in the direction of laser emission. After acquiring n sets of sampling data, the initial position of the equidistant gate is restored to the initial position, and the next cycle is performed. The interval between the equidistant gates is one unit length, and n is a positive integer greater than or equal to 1.
[0053] like Figure 3 As shown, the first sampling data acquisition of the first loop begins. At this time, the starting position of the equidistant gate is set to the initial position, and the first set of sampling data X1 is acquired, which includes the data of distance gate sampling segment 1, distance gate sampling segment 2, distance gate sampling segment 3, and distance gate sampling segment 4.
[0054] The starting position of the equidistant gate is shifted one unit length in the direction of laser emission. Then, the second sampling data acquisition is performed in the first loop to acquire the second set of sampling data X2, which includes the data of distance gate sampling segment 1, distance gate sampling segment 2, distance gate sampling segment 3, and distance gate sampling segment 4 obtained after moving the distance gate.
[0055] The starting position of the equidistant gate is shifted one unit length in the direction of laser emission. Then, the sampling data is acquired for the third time in the first cycle, and the third set of sampling data X3 is acquired, which includes the data of distance gate sampling segment 1, distance gate sampling segment 2, distance gate sampling segment 3 and distance gate sampling segment 4 obtained after moving the distance gate.
[0056] And so on, after each acquisition of sampling data, the starting position of the equidistant gate is shifted by one unit length, until n sets of sampling data X1, X2, ..., X are acquired. n Each cycle involves n-1 translations.
[0057] After acquiring n sets of sampled data, the starting position of the equidistant gate is restored to its initial position, and then the next loop is performed to acquire sampled data.
[0058] In step S103, the n sets of sampled data are spliced together according to the positions of the gates at equal intervals.
[0059] Since the distance gates corresponding to the n sets of sampled data are all equidistant, and the distance between any two adjacent sets of sampled data is a unit length, these sampled data can be concatenated according to the position of the distance gate, that is, the same sample segments in each set of sampled data can be concatenated. For example, for... Figure 3 The sampling data from four equidistant gates were spliced as follows: Sampling segment 1 of the first sampling data acquisition, Sampling segment 1 of the second sampling data acquisition, ... Sampling segment 1 of the nth sampling data acquisition, Sampling segment 2 of the first sampling data acquisition, Sampling segment 2 of the second sampling data acquisition, ... Sampling segment 2 of the nth sampling data acquisition, Sampling segment 3 of the first sampling data acquisition, Sampling segment 3 of the second sampling data acquisition, ... Sampling segment 3 of the nth sampling data acquisition, Sampling segment 4 of the first sampling data acquisition, Sampling segment 4 of the second sampling data acquisition, ... Sampling segment 4 of the nth sampling data acquisition.
[0060] In step S104, the spliced sampled data is output as the measurement data of the measurement object.
[0061] The technical solution proposed in this invention involves translating and cyclically acquiring sampling data from gates that were originally fixed in position and number. Because the gates are translated, the overall measurement range increases. Furthermore, for the same time-domain location, multiple sampling data are stitched together, thus increasing accuracy. This measurement scheme increases both the measurement range and accuracy, resulting in broader and more precise wind measurement data.
[0062] In one embodiment of this application, the laser wind measurement radar includes an FPGA (Field-Programmable Gate Array) and a host computer. The steps of the above method can be executed by these two parts, wherein:
[0063] The FPGA cyclically acquires sampled data and uploads it to the host computer.
[0064] The host computer receives the sampling data uploaded by the FPGA, splices it, and outputs the spliced sampling data.
[0065] In one embodiment of this application, as Figure 4 As shown, the FPGA uploads the acquired sampling data to the host computer after acquiring each set of sampling data. Specifically, the FPGA performs an FFT transformation on the AD input signal within the distance gate and then outputs the result.
[0066] like Figure 5 As shown, the host computer software caches n sets of data uploaded by the FPGA and splices the n sets of sampled data uploaded by the FPGA.
[0067] To ensure that the frequency of data refresh by the host computer matches the frequency of data upload by the FPGA, this invention also proposes a method for the host computer to output the concatenated data via convolution.
[0068] In one embodiment of this application, each time the host computer receives a set of sampled data uploaded by the FPGA, it concatenates this set of sampled data with the previously received n-1 sets of sampled data and outputs the result. The specific implementation method is as follows:
[0069] First convolution output: The sampled data X1 uploaded in the first iteration of the current loop by the FPGA, the sampled data X2 uploaded in the second iteration of the current loop, ..., the sampled data Xn uploaded in the nth iteration of the current loop. n The data after being stitched together.
[0070] Second convolution output: The data obtained by concatenating the sampled data X2 uploaded in the second cycle of the current FPGA, the sampled data X3 uploaded in the third cycle of the current FPGA, ..., the sampled data X1 uploaded in the nth cycle of the current FPGA and the first cycle of the next FPGA.
[0071] The third convolution output is the data obtained by concatenating the sampled data X3 uploaded in the 3rd cycle of the current FPGA, the sampled data X4 uploaded in the 4th cycle of the current FPGA, ..., the sampled data Xn uploaded in the nth cycle of the current FPGA, the sampled data X1 uploaded in the 1st cycle of the next FPGA, and the sampled data X2 uploaded in the 2nd cycle of the next FPGA.
[0072] By analogy, the data refresh rate of the host computer will be consistent with the refresh rate of the FPGA, which can increase the data refresh rate.
[0073] The implementation process of this application will be described in detail below through examples.
[0074] Figure 6 This is a flowchart illustrating a measurement method for a laser wind-measuring radar according to an exemplary embodiment. This method can be implemented jointly by an FPGA in the laser radar and a host computer. Figure 6 As shown, the method includes the following steps S601-S607:
[0075] In step S601, the FPGA acquires the raw AD data.
[0076] In step S602, the FPGA sets the starting position of the equidistant gate to the initial position, and the number of cycles m = 0.
[0077] In step S603, the FPGA acquires a set of sampling data based on the equidistant distance gate, with the number of loops m = m + 1.
[0078] In this step, the FPGA obtains sampling data from the original AD data based on the equidistant distance gate.
[0079] In step S604, the FPGA determines whether the number of loops m is equal to n. If yes, it returns to step S602; otherwise, it executes step S605.
[0080] In step S605, the FPGA shifts the starting position of the equidistant gate by one unit length in the laser emission direction, and returns to step S603.
[0081] In step S606, the FPGA will acquire a set of sampled data and send it to the host computer.
[0082] In step S607, the host computer caches n sets of sampled data.
[0083] In step S608, the host computer splices the n sets of sampled data in the buffer.
[0084] In step S609, the host computer outputs the convolutional data that has been spliced.
[0085] Steps 604 and 606 can be executed simultaneously.
[0086] The following are embodiments of the apparatus disclosed herein, which can be used to execute embodiments of the method disclosed herein.
[0087] Figure 7 This is a block diagram illustrating a measuring device for a laser wind-measuring radar according to an exemplary embodiment. This device can be implemented as part or all of an electronic device through software, hardware, or a combination of both. Figure 7 As shown, the measuring device of this laser wind measuring radar includes:
[0088] Setting module 71 is used to set equidistant doors, with each door having a width of n units.
[0089] The acquisition module 72 is used to cyclically acquire sampling data starting from the initial position of the equidistant gate. Each time a set of sampling data is acquired, the initial position of the equidistant gate is shifted one unit length in the direction of laser emission. After acquiring n sets of sampling data, the initial position of the equidistant gate is restored to the initial position, and the next cycle is performed. Here, n is a positive integer greater than or equal to 1.
[0090] The splicing module 73 is used to splice n sets of sampled data according to the positions of the gate at equal intervals;
[0091] Output module 74 is used to output the spliced sampled data as the measurement data of the measured object.
[0092] like Figure 8 As shown in the figure, this disclosure also provides a measuring device 800 for a laser wind-measuring radar, comprising:
[0093] Processor 801;
[0094] Memory 802 is used to store processor-executable instructions;
[0095] The processor 801 is configured as follows:
[0096] Set up equidistant doors, with each door having a width of n units.
[0097] Starting from the initial position of the equidistant gate, sampling data is acquired cyclically. For each set of sampling data acquired, the initial position of the equidistant gate is shifted one unit length in the direction of laser emission. After acquiring n sets of sampling data, the initial position of the equidistant gate is restored to the initial position, and the next cycle begins. Here, n is a positive integer greater than or equal to 1.
[0098] The n sets of sampled data are spliced together according to the positions of the gates at equal intervals;
[0099] The spliced sampled data is output as the measurement data of the measured object.
[0100] Regarding the apparatus in the above embodiments, the specific manner in which each module performs its operation has been described in detail in the embodiments related to the method, and will not be elaborated upon here.
[0101] In an exemplary embodiment, the apparatus 800 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the methods described above.
[0102] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory including instructions that can be executed by the processor 801 of the device 800 to perform the above-described method. For example, the non-transitory computer-readable storage medium may be a ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, and optical data storage device, etc.
[0103] A non-transitory computer-readable storage medium, wherein when instructions in the storage medium are executed by a processor of a device 800, the device 800 is able to perform the aforementioned laser wind-measuring radar measurement method, the method comprising:
[0104] Set up equidistant doors, with each door having a width of n units.
[0105] Starting from the initial position of the equidistant gate, sampling data is acquired cyclically. For each set of sampling data acquired, the initial position of the equidistant gate is shifted one unit length in the direction of laser emission. After acquiring n sets of sampling data, the initial position of the equidistant gate is restored to the initial position, and the next cycle begins. Here, n is a positive integer greater than or equal to 1.
[0106] The n sets of sampled data are spliced together according to the positions of the gates at equal intervals;
[0107] The spliced sampled data is output as the measurement data of the measured object.
[0108] The above methods can be processed not only by a single processor, but also by different modules. For example... Figure 9 As shown, this application also proposes a laser wind measurement radar, including an FPGA 91 and a host computer 92, wherein:
[0109] The FPGA91 is used to: set equidistant gates, each with a width of n units; starting from the initial position of the equidistant gates, it iteratively acquires sampling data. For each set of sampling data acquired, the initial position of the equidistant gates is shifted one unit in the laser emission direction until n sets of sampling data are acquired. Then, the initial position of the equidistant gates is restored to its initial position, and the next loop begins; where n is a positive integer greater than or equal to 1; and the acquired sampling data is uploaded to the host computer.
[0110] The host computer 92 is used to: stitch together n sets of sampled data according to the positions of the gate at equal intervals; and output the stitched sampled data as the measurement data of the measured object.
[0111] In one embodiment, the FPGA is used to upload the acquired sampling data to the host computer after acquiring each set of sampling data;
[0112] The host computer is used to output the spliced sampled data via convolution.
[0113] In one embodiment, the host computer is used to concatenate each set of sampled data received from the FPGA with the previously received n-1 sets of sampled data and then output the result.
[0114] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.
[0115] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.
Claims
1. A measurement method of a laser windfinder radar, characterized by, The method comprises the steps of: setting equidistant range gates, each range gate having a width of n unit lengths; starting from an initial position of a start position of the equidistant range gates, cyclically acquiring sample data, wherein, after each group of sample data is acquired, the start position of the equidistant range gates is translated by one unit length in the laser emission direction, and after n groups of sample data are acquired, the start position of the equidistant range gates is restored to the initial position for the next cycle; wherein n is a positive integer greater than or equal to 1; splicing the n groups of sample data according to the positions of the equidistant range gates, wherein the same range gate sampling segments in the n groups of sample data are spliced in the sampling order and then spliced according to the range gate sampling segment serial numbers; outputting the spliced sample data as measurement data of the measurement object.
2. The method of claim 1, wherein, The laser wind measurement radar comprises an FPGA and a host computer, wherein: the FPGA cyclically acquires sample data and uploads the sample data to the host computer; the host computer receives the sample data uploaded by the FPGA, splices the sample data, and outputs the spliced sample data.
3. The method of claim 2, wherein, Wherein: the FPGA uploads the acquired sample data to the host computer after each group of sample data is acquired; the host computer convolves and outputs the spliced sample data.
4. The method of claim 3, wherein, The host computer convolves and outputs the spliced sample data, comprising: the host computer splices and outputs each group of sample data uploaded by the FPGA with the previous n-1 groups of sample data after receiving the group of sample data.
5. A measuring device of a laser windfinder radar, characterized in that The method comprises the steps of: setting an equidistant range gate, each range gate having a width of n unit lengths; starting from an initial position of a start position of the equidistant range gates, cyclically acquiring sample data, wherein, after each group of sample data is acquired, the start position of the equidistant range gates is translated by one unit length in the laser emission direction, and after n groups of sample data are acquired, the start position of the equidistant range gates is restored to the initial position for the next cycle; wherein n is a positive integer greater than or equal to 1; splicing the n groups of sample data according to the positions of the equidistant range gates, wherein the same range gate sampling segments in the n groups of sample data are spliced in the sampling order and then spliced according to the range gate sampling segment serial numbers; outputting the spliced sample data as measurement data of the measurement object.
6. A measuring device of a laser windfinder radar, characterized by The method comprises the steps of: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to: set equidistant range gates, each range gate having a width of n unit lengths; starting from an initial position of a start position of the equidistant range gates, cyclically acquiring sample data, wherein, after each group of sample data is acquired, the start position of the equidistant range gates is translated by one unit length in the laser emission direction, and after n groups of sample data are acquired, the start position of the equidistant range gates is restored to the initial position for the next cycle; wherein n is a positive integer greater than or equal to 1; splicing the n groups of sample data according to the positions of the equidistant range gates, wherein the same range gate sampling segments in the n groups of sample data are spliced in the sampling order and then spliced according to the range gate sampling segment serial numbers; outputting the spliced sample data as measurement data of the measurement object.
7. A computer readable storage medium having stored thereon computer instructions, wherein, The instruction, when executed by a processor, implements the steps of the method of claim 1.
8. A laser windfinder radar, characterized in that The method comprises the following steps: an FPGA, which is configured to set equidistant distance gates, each distance gate having a width of n unit lengths; starting from an initial position of a start position of the equidistant distance gates, cyclically obtaining sampling data, wherein, after obtaining each group of sampling data, the start position of the equidistant distance gates is translated by one unit length in the laser emission direction, until n groups of sampling data are obtained, then the start position of the equidistant distance gates is restored to the initial position for the next cycle; wherein n is a positive integer greater than or equal to 1; and the obtained sampling data is uploaded to an upper computer; an upper computer, which is configured to splice n groups of sampling data according to the positions of the equidistant distance gates, wherein the same distance gate sampling segments in the n groups of sampling data are spliced in sampling order, and then spliced in distance gate sampling segment sequence number; and the spliced sampling data is output as measurement data of a measurement object.
9. The laser wind lidar according to claim 8, characterized in that the FPGA is configured to upload the obtained sampling data to the upper computer after obtaining each group of sampling data; the upper computer is configured to convolve the output spliced sampling data.
10. The lidar of claim 9, wherein, the upper computer is configured to splice and output, after receiving each group of sampling data uploaded by the FPGA, the group of sampling data and n-1 groups of sampling data received before.
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