Method, device, equipment and storage medium for determining loss tangent of medium

Abstract

The present disclosure provides a method, device, equipment and storage medium for determining the loss tangent of a medium. The method includes screening multiple radar data obtained from an array radar based on a preset screening rule to obtain multiple target radar data, wherein the radar data includes multiple first sub-data corresponding to different sampling points; for each sampling point, performing average square sum processing on the first sub-data in the target radar data corresponding to the sampling point to obtain target sub-data; obtaining first target data based on multiple target sub-data; performing correction processing on the first target data to obtain corrected first target data; performing unit conversion on the corrected first target data to obtain second target data; obtaining the slope of the change curve based on the amplitude change curve of the second target data; and obtaining the loss tangent parameter value of the medium based on the slope and the radar equation.

Description

Technical Field

[0001] The present disclosure relates to the technical field of loss tangent measurement, and more specifically, to a method, device, equipment and storage medium for determining the loss tangent of a medium. Background Art

[0002] The loss tangent can characterize the degree of loss of electromagnetic waves (such as radar signals) by the medium, that is, the degree of attenuation of electromagnetic waves in the medium (such as lunar soil). The larger the loss tangent, the greater the attenuation of electromagnetic waves by the medium, and the shallower the penetration depth of electromagnetic waves.

[0003] In the process of implementing the concept of the present disclosure, the inventors found that there are at least the following problems in the related art: the accuracy of the loss tangent of the medium determined by the array radar is low, which leads to poor accuracy of the radar's detection depth. Summary of the invention

[0004] In view of this, embodiments of the present disclosure provide a method for determining the loss tangent of a medium, an apparatus for determining the loss tangent of a medium, an electronic device, a computer-readable storage medium, and a computer program product.

[0005] One aspect of an embodiment of the present disclosure provides a method for determining a loss tangent of a medium, comprising:

[0006] Based on a preset screening rule, multiple radar data obtained from the array radar are screened to obtain multiple target radar data, wherein the radar data includes multiple first sub-data corresponding to different sampling points;

[0007] For each of the sampling points, performing average square sum processing on the first sub-data in the target radar data corresponding to the sampling point to obtain target sub-data;

[0008] Obtaining first target data according to the plurality of target points data;

[0009] Performing correction processing on the first target data to obtain corrected first target data;

[0010] Performing unit conversion on the corrected first target data to obtain second target data;

[0011] According to the variation curve of the amplitude of the second target data, obtaining the slope of the variation curve; and

[0012] According to the above slope and radar equation, the loss tangent parameter value of the above medium is obtained.

[0013] According to an embodiment of the present disclosure, the array radar includes a plurality of antennas, and different antennas have the same or different antenna spacings;

[0014] The above-mentioned method filters multiple radar data obtained from the array radar based on the preset filtering rules to obtain multiple target radar data, including:

[0015] The data received by antennas having the same antenna spacing are screened from the plurality of radar data to obtain the plurality of target radar data.

[0016] According to an embodiment of the present disclosure, for each of the sampling points, performing average square sum processing on the first sub-data in the target radar data corresponding to the sampling point to obtain target sub-data includes:

[0017] Performing square sum processing on the first divided data in each of the target radar data to obtain a plurality of second divided data; and

[0018] The target score data is obtained by averaging the plurality of the second score data.

[0019] According to an embodiment of the present disclosure, the above radar data includes direct coupled wave data and reflection data;

[0020] Before filtering the multiple radar data obtained from the array radar based on the preset filtering rules, the method further includes:

[0021] Performing filtering processing on each of the above radar data to obtain a plurality of filtered reflection data; and

[0022] Background subtraction processing is performed on each of the above filtered reflection data to obtain a plurality of pre-processed radar data.

[0023] According to an embodiment of the present disclosure, the above-mentioned array radar includes a plurality of transmitting antennas and a plurality of receiving antennas;

[0024] The step of correcting the first target data to obtain the corrected first target data includes:

[0025] The corrected first target data is obtained based on the first target data and the two-way distance, wherein the two-way distance represents the sum of the distances between the transmitting antenna and the receiving antenna corresponding to any of the target radar data and the reflector in the medium.

[0026] According to an embodiment of the present disclosure, the unit conversion of the corrected first target data to obtain the second target data includes:

[0027] Performing logarithmic processing on the corrected first target data to obtain the second target data;

[0028] Wherein, obtaining the slope of the above-mentioned change curve according to the change curve of the amplitude of the above-mentioned second target data includes:

[0029] Determine a linear attenuation curve of the change curve according to the change curve of the amplitude of the second target data, wherein the change curve represents the change of the amplitude of the second target data with the round-trip distance;

[0030] The above-mentioned slope is obtained by performing linear fitting processing on the above-mentioned linear attenuation curve.

[0031] According to an embodiment of the present disclosure, the relationship between the above slope and the loss tangent parameter is shown in the following formula:

[0032]

[0033] Among them, α represents the slope, the above slope represents the attenuation coefficient, tanδ represents the loss tangent parameter, ω represents the angular frequency of the array radar, μ represents the magnetic permeability of the array radar, and ε represents the dielectric constant of the medium.

[0034] Another aspect of the embodiments of the present disclosure provides a device for determining the loss tangent of a medium, comprising:

[0035] A screening module, used for screening a plurality of radar data acquired from the array radar based on a preset screening rule to obtain a plurality of target radar data, wherein the radar data includes a plurality of first sub-data corresponding to different sampling points;

[0036] A first processing module is used for performing average square sum processing on the first sub-data in the target radar data corresponding to each sampling point to obtain target sub-data;

[0037] A second processing module, used for obtaining first target data according to the plurality of target points data;

[0038] A correction module, used for performing correction processing on the first target data to obtain corrected first target data;

[0039] A conversion module, used for performing unit conversion on the corrected first target data to obtain second target data;

[0040] a determination module, configured to obtain the slope of the variation curve according to the variation curve of the amplitude of the second target data; and

[0041] The calculation module is used to obtain the loss tangent parameter value of the medium according to the slope and the radar equation.

[0042] Another aspect of an embodiment of the present disclosure provides an electronic device, comprising: one or more processors; and a memory for storing one or more programs, wherein when the one or more programs are executed by the one or more processors, the one or more processors implement the method described above.

[0043] Another aspect of an embodiment of the present disclosure provides a computer-readable storage medium storing computer-executable instructions, which are used to implement the method described above when executed.

[0044] Another aspect of an embodiment of the present disclosure provides a computer program product, wherein the computer program product includes computer executable instructions, and the instructions are used to implement the method described above when executed.

[0045] According to an embodiment of the present disclosure, first target data is obtained by performing average square sum processing on multiple target radar data, and the first target data is corrected and converted into units, so as to determine the loss tangent value using the slope of the amplitude curve of the second target data and the radar equation, thereby at least partially overcoming the technical problem of low accuracy of the loss tangent of the medium determined by the array radar, improving the accuracy of the loss tangent of the medium determined by the multi-offset ground penetrating radar, and thereby improving the accuracy of the radar detection depth. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] The above and other objects, features and advantages of the present disclosure will become more apparent through the following description of the embodiments of the present disclosure with reference to the accompanying drawings, in which:

[0047] Figure 1 An exemplary system architecture of a method for determining the loss tangent of an application medium according to an embodiment of the present disclosure is schematically shown;

[0048] Figure 2 A flow chart schematically illustrates a method for determining the loss tangent of a medium according to an embodiment of the present disclosure;

[0049] Figure 3 A schematic diagram schematically shows the relationship between the second target data and the two-way distance according to an embodiment of the present disclosure;

[0050] Figure 4 A block diagram schematically shows a device for determining the loss tangent of a medium according to an embodiment of the present disclosure; and

[0051] Figure 5 A block diagram of an electronic device for implementing a method for determining a loss tangent of a medium according to an embodiment of the present disclosure is schematically shown. DETAILED DESCRIPTION

[0052] Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. However, it should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present disclosure. In the following detailed description, for ease of explanation, many specific details are set forth to provide a comprehensive understanding of the embodiments of the present disclosure. However, it is apparent that one or more embodiments may also be implemented without these specific details. In addition, in the following description, descriptions of known structures and technologies are omitted to avoid unnecessary confusion of the concepts of the present disclosure.

[0053] The terms used herein are only for describing specific embodiments and are not intended to limit the present disclosure. The terms "comprise", "include", etc. used herein indicate the existence of the features, steps, operations and / or components, but do not exclude the existence or addition of one or more other features, steps, operations or components.

[0054] All terms (including technical and scientific terms) used herein have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein should be interpreted as having a meaning consistent with the context of this specification, and should not be interpreted in an idealized or overly rigid manner.

[0055] When using expressions such as "at least one of A, B, and C, etc.", they should generally be interpreted according to the meaning of the expression commonly understood by those skilled in the art (for example, "a system having at least one of A, B, and C" should include but is not limited to a system having A alone, B alone, C alone, A and B, A and C, B and C, and / or A, B, C, etc.).

[0056] The embodiments of the present disclosure provide a method, device, equipment and storage medium for determining the loss tangent of a medium. The method includes filtering multiple radar data obtained from an array radar based on preset screening rules to obtain multiple target radar data, wherein the radar data includes multiple first sub-data corresponding to different sampling points; for each sampling point, performing average square sum processing on the first sub-data in the target radar data corresponding to the sampling point to obtain target sub-data; obtaining first target data based on multiple target sub-data; correcting the first target data to obtain corrected first target data; performing unit conversion on the corrected first target data to obtain second target data; obtaining the slope of the change curve based on the amplitude change curve of the second target data; and obtaining the loss tangent parameter value of the medium based on the slope and the radar equation.

[0057] Figure 1 The exemplary system architecture 100 to which the method for determining the loss tangent of a medium according to an embodiment of the present disclosure can be applied is schematically shown. It should be noted that: Figure 1What is shown is merely an example of a system architecture to which the embodiments of the present disclosure can be applied, in order to help those skilled in the art understand the technical content of the present disclosure, but it does not mean that the embodiments of the present disclosure cannot be used in other devices, systems, environments or scenarios.

[0058] like Figure 1 As shown, the system architecture 100 according to this embodiment may include terminal devices 101, 102, 103, a network 104, a server 105, and an array radar 106. The network 104 is used to provide a medium for communication links between the terminal devices 101, 102, 103 and the server 105. The network 104 may include various connection types, such as wired and / or wireless communication links, etc.

[0059] The user can use the terminal devices 101, 102, 103 to interact with the server 105 through the network 104 to receive or send messages, etc. Various communication client applications can be installed on the terminal devices 101, 102, 103, such as loss tangent calculation applications, web browsing applications, search applications, instant messaging tools, email clients and / or social platform software, etc. (only as examples).

[0060] The terminal devices 101 , 102 , and 103 may be various electronic devices having a display screen and supporting web browsing, including but not limited to smart phones, tablet computers, laptop computers, and desktop computers.

[0061] The server 105 may be a server that provides various services, such as a background management server (only as an example) that provides support for calculating dielectric loss tangent parameter values ​​requested by users using the terminal devices 101, 102, and 103. The background management server may analyze and process the received user request data, and feed back the processing results to the terminal device.

[0062] The array radar 106 can use a transmitting antenna to transmit a transmission signal to the object under test. After the transmission signal is reflected by a medium and / or a reflector, the reflected signal is received by a receiving antenna of the array radar 106 .

[0063] It should be noted that the method for determining the loss tangent of the medium provided in the embodiment of the present disclosure can generally be executed by the server 105. Accordingly, the device for determining the loss tangent of the medium provided in the embodiment of the present disclosure can generally be set in the server 105. The method for determining the loss tangent of the medium provided in the embodiment of the present disclosure can also be executed by a server or server cluster that is different from the server 105 and can communicate with the terminal devices 101, 102, 103 and / or the server 105. Correspondingly, the device for determining the loss tangent of the medium provided in the embodiment of the present disclosure can also be set in a server or server cluster that is different from the server 105 and can communicate with the terminal devices 101, 102, 103 and / or the server 105. Alternatively, the method for determining the loss tangent of the medium provided in the embodiment of the present disclosure can also be executed by the terminal devices 101, 102, or 103, or can also be executed by other terminal devices different from the terminal devices 101, 102, or 103. Correspondingly, the device for determining the loss tangent of the medium provided in the embodiment of the present disclosure may also be arranged in the terminal device 101 , 102 , or 103 , or in other terminal devices different from the terminal device 101 , 102 , or 103 .

[0064] It should be understood that Figure 1 The number of terminal devices, networks, servers and array radars in the embodiment is only for illustration. Any number of terminal devices, networks, servers and array radars may be provided according to implementation requirements.

[0065] Figure 2 A flow chart of a method for determining the loss tangent of a medium according to an embodiment of the present disclosure is schematically shown.

[0066] like Figure 2 As shown, the method may include operations S201 to S207.

[0067] In operation S201, based on a preset screening rule, a plurality of radar data acquired from an array radar is screened to obtain a plurality of target radar data, wherein the radar data includes a plurality of sub-data corresponding to different sampling points.

[0068] In operation S202, for each sampling point, average square sum processing is performed on the first sub-data in the target radar data corresponding to the sampling point to obtain target sub-data.

[0069] In operation S203, first target data is obtained according to the plurality of target divided data.

[0070] In operation S204, correction processing is performed on the first target data to obtain corrected first target data.

[0071] In operation S205 , unit conversion is performed on the corrected first target data to obtain second target data.

[0072] In operation S206 , a slope of the variation curve is obtained according to the variation curve of the amplitude of the second target data.

[0073] In operation S207, a loss tangent parameter value of the medium is obtained according to the slope and the radar equation.

[0074] According to an embodiment of the present disclosure, the array radar may include but is not limited to a multi-offset ground-penetrating radar having multiple transmitting antennas and multiple receiving antennas, for example, it may be a lunar soil structure detector.

[0075] According to an embodiment of the present disclosure, the medium may include soil from different planets, or other solid or liquid media, such as lunar soil, earth soil, or sea water, lake water, etc. The correction process includes geometric propagation correction and scattering correction.

[0076] According to an embodiment of the present disclosure, based on the multiple target radar data obtained by screening, the sub-data corresponding to the sampling points are averaged and squared to obtain a first target data. The first target data is corrected and converted into a root form to obtain the second target data. According to the amplitude of the second target data, a curve of its change with depth is drawn, so that the slope of the curve is determined, and the loss tangent parameter value of the medium can be determined according to the slope and the radar equation.

[0077] According to an embodiment of the present disclosure, first target data is obtained by performing average square sum processing on multiple target radar data, and the first target data is corrected and converted into units, so as to determine the loss tangent value using the slope of the amplitude curve of the second target data and the radar equation, thereby at least partially overcoming the technical problem of low accuracy of the loss tangent of the medium determined by the array radar, improving the accuracy of the loss tangent of the medium determined by the multi-offset ground penetrating radar, and thereby improving the accuracy of the radar detection depth.

[0078] According to an embodiment of the present disclosure, an array radar includes multiple antennas, and different antennas have the same or different antenna spacings.

[0079] According to an embodiment of the present disclosure, based on a preset screening rule, multiple radar data acquired from an array radar are screened to obtain multiple target radar data, including the following operations:

[0080] Data received by antennas with the same antenna spacing are screened from the multiple radar data to obtain multiple target radar data.

[0081] According to an embodiment of the present disclosure, the preset screening rule refers to determining the data received by antennas with the same antenna spacing as target radar data from multiple radar data, and eliminating the remaining radar data.

[0082] According to an embodiment of the present disclosure, among the multiple radar data acquired, there are data received by antennas with the same antenna spacing and data received by antennas with different antenna spacings. Therefore, through preset screening rules, the data received by antennas with the same antenna spacing can be extracted from the above radar data and determined as target radar data.

[0083] According to an embodiment of the present disclosure, for each sampling point, performing average square sum processing on the first sub-data in the target radar data corresponding to the sampling point to obtain the target sub-data may include the following operations:

[0084] The first sub-data in each target radar data is processed by square sum to obtain a plurality of second sub-data. The plurality of second sub-data are processed by average to obtain the target sub-data.

[0085] According to an embodiment of the present disclosure, when there are multiple target radar data, for example, three (respectively data A, data B and data C). When the sampling point is t1, the first sub-data at t1 in each target radar data is squared and processed to obtain multiple second sub-data, and the multiple second sub-data are averaged to obtain one target sub-data. Then, the first target data can be obtained according to the multiple target sub-data.

[0086] According to an embodiment of the present disclosure, radar data includes direct-coupled wave data and reflection data.

[0087] Before filtering the multiple radar data obtained from the array radar based on the preset filtering rules, the following operations may also be included:

[0088] Each radar data is filtered to obtain a plurality of filtered reflection data. Each filtered reflection data is subjected to background subtraction to obtain a plurality of pre-processed radar data.

[0089] According to an embodiment of the present disclosure, since the original radar data contains a large number of background signals such as horizontal interference signals, for example, direct-coupled wave signals, it is necessary to filter and reduce the background of the radar data so that the target radar data does not contain the above-mentioned background signals, thereby further improving the accuracy of the calculated loss tangent of the medium.

[0090] According to an embodiment of the present disclosure, the filtering process may adopt a bandpass filtering method, wherein the bandpass filtering may be designed according to the frequency band of the array radar.

[0091] According to an embodiment of the present disclosure, an array radar includes a plurality of transmitting antennas and a plurality of receiving antennas.

[0092] According to an embodiment of the present disclosure, performing correction processing on the first target data to obtain the corrected first target data may include the following operations:

[0093] The corrected first target data is obtained according to the first target data and the two-way distance, wherein the two-way distance represents the sum of the distances between the transmitting antenna and the receiving antenna corresponding to any target radar data and the reflector in the medium.

[0094] According to an embodiment of the present disclosure, the round-trip distance may refer to a propagation distance of a signal when a signal transmitted by a transmitting antenna is received by a receiving antenna.

[0095] According to an embodiment of the present disclosure, the first target data is multiplied by the cube of the two-way distance to obtain the corrected first target data, and then the unit of the corrected first target data is converted to solve the loss tangent value.

[0096] According to an embodiment of the present disclosure, the radar equation is shown in formula (1):

[0097]

[0098] Among them, PR, PT, G, λ, ξ, R and α represent the transmit power, receive power, system gain, wavelength, backscatter cross section, two-way distance and slope (attenuation coefficient) of the array radar respectively.

[0099] According to the embodiments of the present disclosure, it can be deduced from formula (1) that the backscatter cross section and the two-way distance have a relationship as shown in formula (2).

[0100]

[0101] Assuming that the intensity of the first target data is P and the propagation distance is R1, the corrected first target data P′ can be expressed by formula (3).

[0102] P′=P·R1 3 (3)

[0103] According to an embodiment of the present disclosure, performing unit conversion on the corrected first target data to obtain the second target data may include the following operations:

[0104] The corrected first target data is logarithmically processed to obtain second target data.

[0105] According to an embodiment of the present disclosure, the amplitude of the corrected first target data is converted into units, so that the second target data in units of dB / m can be obtained, wherein the unit of the second target data, dB / m, is a power unit.

[0106] Figure 3 The diagram schematically shows the relationship between the second target data and the two-way distance according to an embodiment of the present disclosure.

[0107] According to an embodiment of the present disclosure, obtaining the slope of the change curve according to the change curve of the amplitude of the second target data may include the following operations:

[0108] According to the variation curve of the amplitude of the second target data, a linear attenuation curve of the variation curve is determined, wherein the variation curve represents the variation of the amplitude of the second target data with the round-trip distance. A linear fitting process is performed on the linear attenuation curve to obtain a slope.

[0109] According to the embodiment of the present disclosure, the following can be obtained by processing the second target data: Figure 3 The linear attenuation curve shown in FIG. 1 shows the linear attenuation curve. The black dots represent the amplitude of the second target data, and the gray line is the linear attenuation curve obtained by fitting. The slope of the linear attenuation curve obtained by fitting is the attenuation coefficient corresponding to the change curve.

[0110] According to an embodiment of the present disclosure, the relationship between the slope and the loss tangent parameter is shown in formula (4):

[0111]

[0112] Among them, α represents the slope, the slope represents the attenuation coefficient, tanδ represents the loss tangent parameter, ω represents the angular frequency of the array radar, μ represents the magnetic permeability of the array radar, and ε represents the dielectric constant of the medium.

[0113] According to an embodiment of the present disclosure, the loss tangent parameter value of the medium can be determined by substituting the slope α determined above into formula (4).

[0114] Figure 4 A block diagram of a device for determining the loss tangent of a medium according to an embodiment of the present disclosure is schematically shown.

[0115] like Figure 4 As shown, the device 400 for determining the loss tangent of a medium may include a screening module 410 , a first processing module 420 , a second processing module 430 , a correction module 440 , a conversion module 450 , a determination module 460 and a calculation module 470 .

[0116] The screening module 410 is used to screen the multiple radar data obtained from the array radar based on preset screening rules to obtain multiple target radar data, wherein the radar data includes multiple first sub-data corresponding to different sampling points.

[0117] The first processing module 420 is used to perform average square sum processing on the first sub-data in the target radar data corresponding to each sampling point to obtain target sub-data.

[0118] The second processing module 430 is used to obtain first target data according to the multiple target data.

[0119] The correction module 440 is used to perform correction processing on the first target data to obtain corrected first target data.

[0120] The conversion module 450 is used to perform unit conversion on the corrected first target data to obtain second target data.

[0121] The determination module 460 is used to obtain the slope of the change curve according to the change curve of the amplitude of the second target data.

[0122] The calculation module 470 is used to obtain the loss tangent parameter value of the medium according to the slope and the radar equation.

[0123] According to an embodiment of the present disclosure, first target data is obtained by performing average square sum processing on multiple target radar data, and the first target data is corrected and converted into units, so as to determine the loss tangent value using the slope of the amplitude curve of the second target data and the radar equation, thereby partially overcoming the technical problem of low accuracy of the loss tangent of the medium determined by the array radar, improving the accuracy of the loss tangent of the medium determined by the multi-offset ground penetrating radar, and further improving the accuracy of the radar detection depth.

[0124] According to an embodiment of the present disclosure, an array radar includes multiple antennas, and different antennas have the same or different antenna spacings.

[0125] According to an embodiment of the present disclosure, the screening module 410 may include a screening unit.

[0126] The screening unit is used to screen the data received by antennas with the same antenna spacing from the multiple radar data to obtain multiple target radar data.

[0127] According to an embodiment of the present disclosure, the first processing module 420 may include a first processing unit and a second processing unit.

[0128] The first processing unit is used to perform square sum processing on the first divided data in each target radar data to obtain a plurality of second divided data.

[0129] The second processing unit is used to perform average processing on the plurality of second divided data to obtain target data.

[0130] According to an embodiment of the present disclosure, radar data includes direct-coupled wave data and reflection data.

[0131] According to an embodiment of the present disclosure, the device 400 for determining the loss tangent of a medium may further include a filtering module and a background subtraction module.

[0132] The filtering module is used to filter each radar data to obtain a plurality of filtered reflection data.

[0133] The background subtraction module is used to perform background subtraction processing on each filtered reflection data to obtain a plurality of pre-processed radar data.

[0134] According to an embodiment of the present disclosure, an array radar includes a plurality of transmitting antennas and a plurality of receiving antennas.

[0135] According to an embodiment of the present disclosure, the correction module 440 may include a correction unit.

[0136] The correction unit is used to obtain the corrected first target data according to the first target data and the two-way distance, wherein the two-way distance represents the sum of the distances between the transmitting antenna and the receiving antenna corresponding to any target radar data and the reflector in the medium.

[0137] According to an embodiment of the present disclosure, the conversion module 450 may include a conversion unit.

[0138] The conversion unit is used to perform logarithmic processing on the corrected first target data to obtain second target data.

[0139] According to an embodiment of the present disclosure, the determination module 460 may include a first determination unit and a second determination unit.

[0140] The first determination unit is used to determine a linear attenuation curve of the variation curve according to the variation curve of the amplitude of the second target data, wherein the variation curve represents the variation of the amplitude of the second target data with the round-trip distance.

[0141] The second determining unit is used to perform linear fitting processing on the linear attenuation curve to obtain a slope.

[0142] According to the modules and units of the embodiments of the present disclosure, any multiple or at least part of the functions of any multiple thereof can be implemented in one module. According to the modules and units of the embodiments of the present disclosure, any one or more can be split into multiple modules for implementation. According to the modules and units of the embodiments of the present disclosure, any one or more can be at least partially implemented as a hardware circuit, such as a Field Programmable Gate Array (FPGA), a Programmable Logic Array (PLA), a System on a Chip, a System on a Substrate, a System on a Package, an Application Specific Integrated Circuit (ASIC), or can be implemented by hardware or firmware of any other reasonable way of integrating or packaging the circuit, or implemented in any one of the three implementation modes of software, hardware and firmware or in any appropriate combination of any of them. Alternatively, according to the modules and units of the embodiments of the present disclosure, one or more can be at least partially implemented as a computer program module, and when the computer program module is run, the corresponding function can be executed.

[0143] For example, any multiple of the screening module 410, the first processing module 420, the second processing module 430, the correction module 440, the conversion module 450, the determination module 460 and the calculation module 470 can be combined in one module / unit for implementation, or any one of the modules / units can be split into multiple modules / units. Alternatively, at least part of the functions of one or more of these modules / units can be combined with at least part of the functions of other modules / units / sub-units and implemented in one module / unit. According to an embodiment of the present disclosure, at least one of the screening module 410, the first processing module 420, the second processing module 430, the correction module 440, the conversion module 450, the determination module 460 and the calculation module 470 can be at least partially implemented as a hardware circuit, such as a field programmable gate array (FPGA), a programmable logic array (PLA), a system on a chip, a system on a substrate, a system on a package, an application specific integrated circuit (ASIC), or can be implemented by hardware or firmware such as any other reasonable way of integrating or packaging the circuit, or by any one of the three implementation methods of software, hardware and firmware or by a suitable combination of any of them. Alternatively, at least one of the screening module 410, the first processing module 420, the second processing module 430, the correction module 440, the conversion module 450, the determination module 460 and the calculation module 470 can be at least partially implemented as a computer program module, and when the computer program module is executed, the corresponding function can be performed.

[0144] It should be noted that the part of the device for determining the loss tangent of the medium in the embodiment of the present disclosure corresponds to the part of the method for determining the loss tangent of the medium in the embodiment of the present disclosure. The description of the part of the device for determining the loss tangent of the medium specifically refers to the part of the method for determining the loss tangent of the medium, which will not be repeated here.

[0145] Figure 5 A block diagram of an electronic device suitable for implementing the method described above according to an embodiment of the present disclosure is schematically shown. Figure 5 The electronic device shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present disclosure.

[0146] like Figure 5 As shown, the electronic device 500 according to the embodiment of the present disclosure includes a processor 501, which can perform various appropriate actions and processes according to the program stored in the read-only memory (ROM) 502 or the program loaded from the storage part 508 to the random access memory (RAM) 503. The processor 501 may include, for example, a general-purpose microprocessor (such as a CPU), an instruction set processor and / or a related chipset and / or a special-purpose microprocessor (for example, an application-specific integrated circuit (ASIC)), etc. The processor 501 may also include an onboard memory for caching purposes. The processor 501 may include a single processing unit or multiple processing units for performing different actions of the method flow according to the embodiment of the present disclosure.

[0147] In RAM 503, various programs and data required for the operation of electronic device 500 are stored. Processor 501, ROM 502 and RAM 503 are connected to each other via bus 504. Processor 501 performs various operations of the method flow according to the embodiment of the present disclosure by executing the program in ROM 502 and / or RAM 503. It should be noted that the program can also be stored in one or more memories other than ROM 502 and RAM 503. Processor 501 can also perform various operations of the method flow according to the embodiment of the present disclosure by executing the program stored in the one or more memories.

[0148] According to an embodiment of the present disclosure, the electronic device 500 may further include an input / output (I / O) interface 505, which is also connected to the bus 504. The system 500 may further include one or more of the following components connected to the I / O interface 505: an input section 506 including a keyboard, a mouse, etc.; an output section 507 including a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker, etc.; a storage section 508 including a hard disk, etc.; and a communication section 509 including a network interface card such as a LAN card, a modem, etc. The communication section 509 performs communication processing via a network such as the Internet. A drive 510 is also connected to the I / O interface 505 as needed. A removable medium 511, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., is installed on the drive 510 as needed, so that a computer program read therefrom is installed into the storage section 508 as needed.

[0149] According to an embodiment of the present disclosure, the method flow according to an embodiment of the present disclosure can be implemented as a computer software program. For example, an embodiment of the present disclosure includes a computer program product, which includes a computer program carried on a computer-readable storage medium, and the computer program contains a program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from the network through the communication part 509, and / or installed from the removable medium 511. When the computer program is executed by the processor 501, the above-mentioned functions defined in the system of the embodiment of the present disclosure are executed. According to an embodiment of the present disclosure, the system, equipment, device, module, unit, etc. described above can be implemented by a computer program module.

[0150] The present disclosure also provides a computer-readable storage medium, which may be included in the device / apparatus / system described in the above embodiments; or may exist independently without being assembled into the device / apparatus / system. The above computer-readable storage medium carries one or more programs, and when the above one or more programs are executed, the method according to the embodiment of the present disclosure is implemented.

[0151] According to an embodiment of the present disclosure, the computer-readable storage medium may be a non-volatile computer-readable storage medium. For example, it may include, but is not limited to: a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM (Erasable Programmable Read Only Memory, EPROM) or flash memory), a portable compact disk read-only memory (Computer Disc Read-Only Memory, CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof. In the present disclosure, a computer-readable storage medium may be any tangible medium containing or storing a program, which may be used by or in combination with an instruction execution system, an apparatus or a device.

[0152] For example, according to an embodiment of the present disclosure, the computer-readable storage medium may include the ROM 502 and / or the RAM 503 described above and / or one or more memories other than the ROM 502 and the RAM 503 .

[0153] An embodiment of the present disclosure also includes a computer program product, which includes a computer program, and the computer program contains program code for executing the method provided by the embodiment of the present disclosure. When the computer program product runs on an electronic device, the program code is used to enable the electronic device to implement the method for determining the loss tangent of the medium provided by the embodiment of the present disclosure.

[0154] When the computer program is executed by the processor 501, the above functions defined in the system / device of the embodiment of the present disclosure are executed. According to the embodiment of the present disclosure, the system, device, module, unit, etc. described above can be implemented by a computer program module.

[0155] In one embodiment, the computer program may rely on tangible storage media such as optical storage devices, magnetic storage devices, etc. In another embodiment, the computer program may also be transmitted and distributed in the form of signals on a network medium, and downloaded and installed through the communication part 509, and / or installed from the removable medium 511. The program code contained in the computer program may be transmitted using any appropriate network medium, including but not limited to: wireless, wired, etc., or any suitable combination of the above.

[0156] According to an embodiment of the present disclosure, the program code for executing the computer program provided by the embodiment of the present disclosure can be written in any combination of one or more programming languages. Specifically, these computing programs can be implemented using high-level process and / or object-oriented programming languages, and / or assembly / machine languages. Programming languages ​​include, but are not limited to, Java, C++, python, "C" language or similar programming languages. The program code can be executed entirely on the user computing device, partially on the user device, partially on the remote computing device, or entirely on the remote computing device or server. In the case of a remote computing device, the remote computing device can be connected to the user computing device through any type of network, including a local area network (LAN) or a wide area network (WAN), or can be connected to an external computing device (for example, using an Internet service provider to connect through the Internet).

[0157] The flowcharts and block diagrams in the accompanying drawings illustrate the possible architecture, functions and operations of the systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each box in the flowchart or block diagram may represent a module, a program segment, or a part of a code, and the above-mentioned module, program segment, or a part of the code 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 box may also occur in an order different from that marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram or flowchart, and the combination of boxes in the block diagram or flowchart, can be implemented with a dedicated hardware-based system that performs the specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions. It can be understood by those skilled in the art that the features recorded in the various embodiments and / or claims of the present disclosure can be combined and / or combined in a variety of ways, even if such a combination or combination is not explicitly recorded in the present disclosure. In particular, without departing from the spirit and teaching of the present disclosure, the features described in the various embodiments and / or claims of the present disclosure may be combined and / or combined in a variety of ways. All of these combinations and / or combinations fall within the scope of the present disclosure.

[0158] The embodiments of the present disclosure are described above. However, these embodiments are only for illustrative purposes and are not intended to limit the scope of the present disclosure. Although the embodiments are described above separately, this does not mean that the measures in the various embodiments cannot be used in combination to advantage. The scope of the present disclosure is defined by the attached claims and their equivalents. Without departing from the scope of the present disclosure, those skilled in the art may make a variety of substitutions and modifications, which should all fall within the scope of the present disclosure.

Claims

1. A method for determining the loss tangent of a medium, comprising: Based on a preset screening rule, multiple radar data obtained from the array radar are screened to obtain multiple target radar data, wherein the radar data includes multiple first sub-data corresponding to different sampling points; For each of the sampling points, performing average square sum processing on the first sub-data in the target radar data corresponding to the sampling point to obtain target sub-data; According to the plurality of target points, first target data is obtained, including: When the number of target radar data is multiple, at the sampling point t 1时 , square and sum the first sub-data at t1 in each target radar data to obtain a plurality of second sub-data, average the plurality of second sub-data to obtain a target sub-data, and obtain the first target data according to the plurality of target sub-data; performing correction processing on the first target data to obtain corrected first target data; Performing unit conversion on the corrected first target data to obtain second target data; According to the variation curve of the amplitude of the second target data, obtaining the slope of the variation curve; and According to the slope and the radar equation, a loss tangent parameter value of the medium is obtained; The relationship between the slope and the loss tangent parameter is shown in the following formula: in, characterizes the slope, the slope characterizes the attenuation coefficient, Characterize the loss tangent parameter, Characterize the angular frequency of array radar, Characterize the magnetic permeability of array radar, Characterizes the dielectric constant of a medium.

2. The method according to claim 1, wherein the array radar comprises a plurality of antennas, and different antennas have the same or different antenna spacings; in, The method of filtering the multiple radar data obtained from the array radar based on the preset filtering rules to obtain multiple target radar data includes: The data received by antennas having the same antenna spacing are screened from the plurality of radar data to obtain the plurality of target radar data.

3. The method according to claim 1, wherein: For each of the sampling points, performing average square sum processing on the first sub-data in the target radar data corresponding to the sampling point to obtain target sub-data includes: Performing square sum processing on the first divided data in each of the target radar data to obtain a plurality of second divided data; and A plurality of the second divided data are averaged to obtain the target divided data.

4. The method according to claim 3, wherein the radar data comprises direct coupled wave data and reflection data; Before filtering the multiple radar data obtained from the array radar based on the preset filtering rules, the method further includes: Performing filtering processing on each radar data to obtain a plurality of filtered reflection data; as well as Background subtraction processing is performed on each of the filtered reflection data to obtain a plurality of pre-processed radar data.

5. The method according to claim 1, wherein the array radar comprises a plurality of transmitting antennas and a plurality of receiving antennas; in, The correcting the first target data to obtain the corrected first target data includes: The corrected first target data is obtained according to the first target data and the two-way distance, wherein the two-way distance represents the sum of the distances between the transmitting antenna and the receiving antenna corresponding to any of the target radar data and the reflector in the medium.

6. The method according to claim 1, wherein: The step of converting the corrected first target data into units to obtain second target data includes: Performing logarithm processing on the corrected first target data to obtain the second target data; Wherein, obtaining the slope of the change curve according to the change curve of the amplitude of the second target data includes: Determine a linear attenuation curve of the change curve according to the change curve of the amplitude of the second target data, wherein the change curve represents the change of the amplitude of the second target data with the round-trip distance; The linear attenuation curve is subjected to linear fitting processing to obtain the slope.

7. A device for determining the loss tangent of a medium, comprising: A screening module, configured to screen a plurality of radar data acquired from the array radar based on a preset screening rule to obtain a plurality of target radar data, wherein the radar data includes a plurality of first sub-data corresponding to different sampling points; A first processing module is used for performing average square sum processing on the first sub-data in the target radar data corresponding to each sampling point to obtain target sub-data; The second processing module is used to obtain the first target data according to the plurality of target points data, including: When the number of target radar data is multiple, at the sampling point t 1时 , square and sum the first sub-data at t1 in each target radar data to obtain a plurality of second sub-data, average the plurality of second sub-data to obtain a target sub-data, and obtain the first target data according to the plurality of target sub-data; A correction module, used for performing correction processing on the first target data to obtain corrected first target data; A conversion module, used for performing unit conversion on the corrected first target data to obtain second target data; a determination module, configured to obtain a slope of the variation curve according to the variation curve of the amplitude of the second target data; and A calculation module, used for obtaining a loss tangent parameter value of the medium according to the slope and the radar equation; The relationship between the slope and the loss tangent parameter is shown in the following formula: in, characterizes the slope, the slope characterizes the attenuation coefficient, Characterize the loss tangent parameter, Characterize the angular frequency of array radar, Characterize the magnetic permeability of array radar, Characterizes the dielectric constant of a medium.

8. An electronic device comprising: one or more processors; a memory for storing one or more programs, When the one or more programs are executed by the one or more processors, the one or more processors implement the method according to any one of claims 1 to 6.

9. A computer-readable storage medium having executable instructions stored thereon, which, when executed by a processor, enables the processor to implement the method according to any one of claims 1 to 6.

Images