A method and device for determining the correctness of the output comb spectrum of an interference source

Abstract

The present invention provides a method and device for determining the correctness of the output comb spectrum of an interference source. The method includes: first, constructing a topological network structure of terminal nodes in a multi-port channel simulator; second, a spectrum analyzer monitors the comb spectrum interference through path planning in the multi-port channel simulator, and the spectrum analyzer feeds back the envelope data of the received spectrum to the controller through a network cable; finally, comparing the comb spectrum interference frequency points with the planned interference frequency points, and determining that the output is correct when the frequency point values are consistent. The method provided by the embodiments of the present invention can effectively reduce the occurrence of false alarm events in the injection-type RF interconnection network test environment in the laboratory.

Description

Technical Field

[0001] The present invention relates to the technical field of network testing, and particularly to a method and device for determining the correctness of the comb spectrum output by an interference source. Background Art

[0002] In the injection-type radio frequency interconnection network test environment in a laboratory, the environment controller issues control commands to the interference source to make it emit the planned interference signal. However, it is easy to have errors in the output signal of the interference source, which is inconsistent with the planned interference signal of the environment controller and has parameter mismatches. The traditional judgment method for monitoring the output spectrum of the interference source only focuses on the bandwidth and operating frequency points, lacking a judgment method for the comb spectrum interference of the interference source output. A method for judging the correctness of the comb spectrum output by the interference source needs to be proposed. Summary of the Invention

[0003] The technical problem to be solved by the present invention is that, in view of the lack of a judgment method for the comb spectrum interference of the interference source output in the prior art, the present invention provides a method and device for determining the correctness of the comb spectrum output by the interference source.

[0004] The technical solution adopted by the present invention is that the method for determining the correctness of the comb spectrum output by the interference source includes:

[0005] Step 1: Construct a topological network structure including an interference source and k terminal node topologies in a multi-port channel simulator. Among them, the topological network structure includes path planning from the interference source to the kth terminal node and from the interference source to the spectrum analyzer;

[0006] Step 2: Use the multi-port channel simulator to network the k terminal nodes to establish a communication connection, and use the interference source to emit comb spectrum interference to the kth terminal node through the multi-port channel simulator. Among them, the number of spectra of the comb spectrum is N, and the center frequency points of each comb spectrum are respectively: f_1, f_2,..., f_n... f_N, that is, the kth node is subjected to interference;

[0007] Step 3: The spectrum analyzer monitors the comb spectrum interference through the path planning in the multi-port channel simulator, and the spectrum analyzer feeds back the envelope data of the received spectrum to the controller. Among them, the envelope data includes: {x_1, x_2..., x_m..., x_M} and {y_1, y_2..., y_m..., y_M}, where x_m, m = 1... M, is the amplitude of the mth frequency point in the frequency domain, and y_m, m = 1... M, is the frequency of the mth frequency point in the frequency domain, and M > N;

[0008] Step 4: $f_n$ is compared with $y_m$ for $m = 1...M$ in the order of $n = 1...N$. When $f_n = y_m$, $x_m$ is denoted as $x'_n$ and stored in the set $\varPhi$, obtaining $\varPhi=\{x'_1,...,x'_n,...x'_N\}$.

[0009] Step 5: Take the maximum and minimum values of $\varPhi$: $x'_{max}=\text{Max}\varPhi$ and $x'_{min}=\text{Min}\varPhi$.

[0010] If $x'_{max}-x'_{min}\leq\Delta$, it is determined that the number of spectral lines of the comb spectrum monitored by the spectrum analyzer is $N$, and the interference output of the interference source is correct; otherwise, it is determined that the number of spectral lines of the comb spectrum monitored by the spectrum analyzer is not $N$, and the interference output of the interference source is incorrect, and the interference signal needs to be output again, where $\Delta$ is a pre-configured threshold.

[0011] In one embodiment, the number $k$ of terminal nodes satisfies: $k\geq2$.

[0012] In one embodiment, the number $N$ of spectral lines of the comb spectrum satisfies: $N\geq2$.

[0013] Another aspect of the present invention also provides a device for determining the correctness of the comb spectrum output by an interference source, including a multi-port channel simulator, an interference source, $k$ terminal nodes, a controller, and a spectrum analyzer;

[0014] Wherein, the controller, the interference source, the spectrum analyzer, and the $k$ terminal nodes are respectively connected to the multi-port channel simulator, the interference source is connected to the controller, the spectrum analyzer is connected to the controller, and the device for determining the correctness of the comb spectrum output by the interference source is configured to implement the method for determining the correctness of the comb spectrum output by the interference source as described in any one of the above.

[0015] Another aspect of the present invention also provides an electronic device, and the electronic device includes the device for determining the correctness of the comb spectrum output by the interference source as described above.

[0016] By adopting the above technical solutions, the present invention has at least the following advantages:

[0017] The present invention adopts a method for determining the correctness of the comb spectrum output by an interference source. First, a topological network structure of terminal nodes is constructed in a multi-port channel simulator. Secondly, the spectrum analyzer monitors the comb spectrum interference through path planning in the multi-port channel simulator. The spectrum analyzer feeds back the envelope data of the received spectrum to the controller through a network cable. Finally, the comb spectrum interference frequency points are compared with the planned interference frequency points. When the frequency point values are consistent, it is determined that the output is correct. This method effectively avoids the occurrence of false alarm events and improves the reliability of test results. Description of the Drawings

[0018] Figure 1 Flowchart of a method for determining the correctness of the output comb spectrum of an interference source according to an embodiment of the present invention;

[0019] Figure 2 Schematic diagram of the topological network structure of a network node, an interference source, and a spectrum analyzer according to an application example embodiment of the present invention;

[0020] Figure 3 Schematic diagram of the composition structure of a device for determining the correctness of the output comb spectrum of an interference source according to an embodiment of the present invention;

[0021] Figure 4 Schematic diagram of the structure of an electronic device according to an embodiment of the present invention;

[0022] Figure 5 Schematic diagram of the topological network structure of a network node, an interference source, and a spectrum analyzer according to an application example embodiment of the present invention. Detailed implementation manners

[0023] To further elaborate on the technical means and effects adopted by the present invention to achieve the predetermined purpose, the present invention will be described in detail as follows in conjunction with the accompanying drawings and preferred embodiments.

[0024] In the drawings, for the sake of clarity, the thickness, dimensions, and shape of the objects have been slightly exaggerated. The drawings are only examples and are not drawn to an exact scale.

[0025] It should also be understood that the terms "comprises," "comprising," "has," "including," and / or "including having," when used in this specification, denote the presence of the stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or combinations thereof. Further, when an expression such as "at least one of..." appears after a list of listed features, it modifies the entire list of listed features rather than individual elements in the list. Further, when describing the embodiments of the present application, the use of "may" means "one or more embodiments of the present application." And the term "exemplary" is intended to refer to an example or illustration.

[0026] As used herein, the terms "substantially," "about," and similar terms are used as terms of approximation and not of degree, and are intended to account for the inherent deviations in measured or calculated values that would be recognized by a person of ordinary skill in the art.

[0027] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It should also be understood that terms (such as those defined in a common dictionary) should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

[0028] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The following will detail this application with reference to the drawings and in conjunction with the embodiments.

[0029] In the description of the method flow in the specification of the present invention and the steps in the flowchart in the drawings of the specification of the present invention, it is not necessary to strictly execute according to the step numbers. The execution order of the method steps can be changed. Moreover, certain steps can be omitted, multiple steps can be combined into one step for execution, and / or one step can be decomposed into multiple steps for execution.

[0030] For ease of understanding, the element names related to the search method in this method will be described:

[0031] Nodes: Divided into network nodes and interference nodes. Network nodes are the nodes of the network under test, and interference nodes are part of the electromagnetic environment. Interference nodes emit interference signals.

[0032] In the first embodiment of the present invention, a method for determining the correctness of the output comb spectrum of an interference source is as Figure 1 shown, and includes the following specific steps:

[0033] Step 1: Initialization. Build the topological network structure of terminal nodes 1 to K in a multi-port channel simulator, including path planning from the interference source to the k-th node and the spectrum analyzer, as Figure 2 shown;

[0034] Step 2: Network the terminal nodes 1 to K through the multi-port channel simulator to achieve normal communication between them. The interference source emits comb spectrum interference to the k-th node through the multi-port channel simulator (through the Figure 2 path of "interference source -> the k-th node" in the figure). The number of spectra of the comb spectrum is N, and the center frequencies of each comb spectrum are respectively: f_1, f_2,..., f_n... f_N, that is, the k-th node is subjected to interference;

[0035] Step 3: The spectrum analyzer monitors the comb spectrum interference through the path planning in the multi-port channel simulator ( Figure 2 the path of "interference source -> spectrum analyzer" in the figure). The spectrum analyzer feeds back the envelope data of the received spectrum to the controller through the network cable. The envelope data is as follows:

[0036] {x_1, x_2..., x_m..., x_M} and {y_1, y_2..., y_m..., y_M}

[0037] x_m, where m = 1...M, is the amplitude of the m-th frequency point in the frequency domain (i.e., y_m, unit MHz), unit dBm, y_m, where m = 1...M, is the frequency of the m-th frequency point in the frequency domain, and M > N;

[0038] Step 4: f_n is compared with y_m, where m = 1...M, in the order of n = 1...N. When f_n = y_m, x_m is denoted as x'_n and stored in the set Φ, obtaining Φ = {x'_1,..., x'_n,...x'_N};

[0039] Step 5: Take the maximum value and the minimum value of Φ, that is:

[0040] x'_max = MaxΦ and x'_min = MinΦ

[0041] If x'_max - x'_min ≤ Δ, it is determined that the number of spectral lines of the comb spectrum monitored by the spectrum analyzer is N, and the interference output of the interference source is correct. Otherwise, it is determined that the number of spectral lines of the comb spectrum monitored by the spectrum analyzer is not N, and the interference output of the interference source is incorrect, and the interference signal needs to be output again.

[0042] It can be understood that Δ is a pre-configured threshold, and this threshold can be reasonably adjusted and configured according to the actual situation, and will not be limited in this article.

[0043] It should be noted that in this embodiment, the number k of terminal nodes satisfies: k ≥ 2.

[0044] Similarly, the number N of spectral lines of the comb spectrum satisfies: N ≥ 2.

[0045] Compared with the prior art, the method provided in this embodiment has at least the following advantages: The present invention adopts a method for determining the correctness of the comb spectrum output by the interference source. First, a topological network structure of terminal nodes is constructed in a multi-port channel simulator. Secondly, the spectrum analyzer monitors the comb spectrum interference through path planning in the multi-port channel simulator. The spectrum analyzer feeds back the envelope data of the received spectrum to the controller through the network cable. Finally, the comb spectrum interference frequency points are compared with the planned interference frequency points. When the frequency point values are consistent, it is determined that the output is correct. This method effectively avoids the occurrence of false alarm events and improves the reliability of the test results.

[0046] The second embodiment of the present invention corresponds to the first embodiment. This embodiment introduces a device for determining the correctness of the comb spectrum output by the interference source, as Figure 3As shown in the figure, it includes the following components: a multi-port channel simulator, an interference source, k terminal nodes, a controller, and a spectrum analyzer;

[0047] Among them, the controller, the interference source, the spectrum analyzer, and the k terminal nodes are respectively connected to the multi-port channel simulator. The interference source is connected to the controller, and the spectrum analyzer is connected to the controller.

[0048] Exemplarily, the terminal node is connected to the multi-port channel simulator through a radio frequency cable, and the controller is connected to the multi-port channel simulator, the interference source, and the spectrum analyzer through network cables. Further, the interference source can input an interference signal into the multi-port channel simulator through a radio frequency cable, and the multi-port channel simulator can output a signal to the spectrum analyzer through a radio frequency cable.

[0049] It can be understood that the device provided in this embodiment is used to implement the method for determining the correctness of the comb-shaped spectrum output by the interference source described in the first embodiment. The specific content of the method is as shown above, and will not be elaborated here.

[0050] The third embodiment of the present invention is an electronic device, as Figure 4 shown. The electronic device includes the device for determining the correctness of the comb-shaped spectrum output by the interference source described in the second embodiment, which can be used to implement the method for determining the correctness of the comb-shaped spectrum output by the interference source described in the first embodiment. The specific content of the method is as shown above, and will not be elaborated here.

[0051] The fourth embodiment of the present invention is based on the above embodiments and combines the attached Figure 5 to introduce an application example of the present invention.

[0052] Reference can be made again to Figure 1 , Figure 1 which describes that the overall process of the method for determining the correctness of the comb-shaped spectrum output by the interference source can be applied to this embodiment. First, a topological network structure of the terminal nodes is constructed in the multi-port channel simulator. Secondly, the spectrum analyzer monitors the comb-shaped spectrum interference through path planning in the multi-port channel simulator. The spectrum analyzer feeds back the envelope data of the received spectrum to the controller through the network cable. Finally, the comb-shaped spectrum interference frequency points are compared with the planned interference frequency points.

[0053] For simplicity of analysis, the channel simulator used in this example system has 8 ports, the ports are in duplex mode, the number of terminal nodes accessing the channel simulation is 4, one interference source and one spectrum analyzer. Specifically, during operation:

[0054] Step 1: Initialize. A topological network structure of terminal nodes 1 to 4 is constructed in the multi-port channel simulator, including path planning from the interference source to the 4th node and the spectrum analyzer, as Figure 5 shown;

[0055] Step 2: Nodes 1 to 4 of the multi-port channel simulator terminal are networked to achieve normal communication with each other. The interference source emits comb-shaped spectrum interference to the 4th node through the multi-port channel simulator (through the path of "interference source -> spectrum analyzer" in the figure). The number of spectra of the comb-shaped spectrum is 5, and the center frequency points of each comb-shaped spectrum are: f_1 = 1 MHz, f_2 = 11 MHz, f_3 = 21 MHz, f_4 = 31 MHz, f_5 = 41 MHz;

[0056] Step 3: The spectrum analyzer monitors the comb-shaped spectrum interference through the path planning in the multi-port channel simulator (the path of "interference source -> spectrum analyzer" in the figure). The spectrum analyzer feeds back the envelope data of the received spectrum to the controller through the network cable. The envelope data is as follows:

[0057] Frequency value set: {y_m|m = 1...46} =

[0058] {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46} in MHz,

[0059] And amplitude value set:

[0060] {x_m|m = 1...46} = {-50.2, -60.2, -60.3, -60.1, -60.1, -60.1, -60.1, -60.1, -60.1, -60.1, -50.1, -60.1, -60.1, -60.1, -60.1, -60.1,

[0061] -60.2, -60.2, -60.2, -60.2, -50.2, -60.2, -60.2, -60, -60, -60, -60, -60, -60, -60, -50, -60, -60, -60, -60, -60, -60, -60, -60, -60, -50.2, -60, -60, -60, -60, -60.2} in dBm;

[0062] Step 4: f_1 to f_5 are respectively compared with the frequency values in the frequency value set in the order of n = 1...5. When f_n = y_m, x_m is denoted as x'_n and stored in the set Φ, and Φ = {-50.2, -50.1, -50, -50.2, -50.2} in dBm;

[0063] Step 5: Obtain the maximum and minimum values of Φ, i.e.:

[0064] x’_max = MaxΦ = -50 and x’_min = MinΦ = -50.2

[0065] x’_max - x’_min = 0.2 ≤ Δ = 0.5, then it is determined that the number of spectral lines of the comb spectrum monitored by the spectrum analyzer is N = 5, and the interference output of the interference source is correct.

[0066] Through the description of the specific implementation manners, one should be able to understand more deeply and specifically the technical means and effects adopted by the present invention to achieve the predetermined purpose. However, the attached drawings are only for reference and illustration purposes and are not used to limit the present invention.

Claims

1. A method for determining the correctness of the output comb spectrum of an interference source, characterized in that, Including: Step 1: Construct a topological network structure including an interference source and k terminal nodes in a multi-port channel simulator. Among them, the topological network structure includes path planning from the interference source to the k-th terminal node and from the interference source to the spectrum analyzer; Step 2: Network the k terminal nodes by using the multi-port channel simulator to establish a communication connection, and use the interference source to transmit comb-shaped spectrum interference to the k-th terminal node through the multi-port channel simulator. Among them, the number of spectra of the comb-shaped spectrum is N, and the center frequencies of each comb-shaped spectrum are respectively: f_1, f_2,..., f_n... f_N, that is, the k-th node is subjected to interference; Step 3: The spectrum analyzer monitors the comb-shaped spectrum interference through the path planning in the multi-port channel simulator, and the spectrum analyzer feeds back the envelope data of the received spectrum to the controller. Among them, the envelope data includes: {x_1, x_2..., x_m..., x_M} and {y_1, y_2..., y_m..., y_M}, where x_m, m = 1... M, is the amplitude of the m-th frequency point in the frequency domain, and y_m, m = 1... M, is the frequency of the m-th frequency point in the frequency domain, and M > N; Step 4: Compare the numerical magnitudes of f_n in the order of n = 1... N with y_m, m = 1... M respectively. When f_n = y_m, record x_m as x’_n and store it in the set Φ to obtain Φ = {x’_1,..., x’_n,... x’_N}; Step 5: Take the maximum value and the minimum value of Φ: x’_max = MaxΦ and x’_min = MinΦ; If x’_max - x’_min ≤ Δ, then it is determined that the number of spectra of the comb-shaped spectrum monitored by the spectrum analyzer is N, and the interference output of the interference source is correct. Otherwise, it is determined that the number of spectra of the comb-shaped spectrum monitored by the spectrum analyzer is not N, and the interference output of the interference source is incorrect, and the interference signal needs to be output again, where Δ is a pre-configured threshold.

2. The method for determining the correctness of the output comb spectrum of an interference source according to claim 1, characterized in that, The number k of the terminal nodes satisfies: k ≥ 2.

3. The method for determining the correctness of the output comb spectrum of an interference source according to claim 1, characterized in that, The number N of the spectra of the comb-shaped spectrum satisfies: N ≥ 2.

4. A device for determining the correctness of the output comb spectrum of an interference source, characterized in that, Including a multi-port channel simulator, an interference source, k terminal nodes, a controller, and a spectrum analyzer; Among them, the controller, the interference source, the spectrum analyzer, and the k terminal nodes are respectively connected to the multi-port channel simulator, the interference source is connected to the controller, the spectrum analyzer is connected to the controller, and the device for determining the correctness of the comb-shaped spectrum output by the interference source is configured to implement the method for determining the correctness of the comb-shaped spectrum output by the interference source as described in any one of claims 1 to 3.

5. An electronic device, characterized in that, The electronic device includes the device for determining the correctness of the comb-shaped spectrum output by the interference source as described in claim 4.

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