A method and apparatus for testing the performance of a frequency hopping communication device receiver

Abstract

The application belongs to the technical field of communication, and specifically discloses a frequency hopping communication device receiver performance test method and device, which comprises the following steps: S1, determining a suitable measurement frequency according to the working frequency range of the measured device, and measuring and calibrating the transmission power of the signal of the test device by using a frequency hopping device sensitivity measurement device according to the measurement frequency; S2, connecting the test device end to a signal source and the measured device end to a spectrum analyzer, adjusting the attenuation value of the adjustable attenuator to 0 dB, and measuring and recording the loss of the test link; the application can test and obtain the receiver sensitivity and dynamic range of the measured device under the frequency hopping working state, restore and measure the technical performance of the measured device under the normal working state to the maximum extent, realize dynamic measurement of the performance state of the measured device, give objective and accurate evaluation results by counting the test results for multiple times, and thus realize objective evaluation of the performance of the frequency hopping communication device.

Description

Technical Field

[0001] This invention belongs to the field of communication technology, specifically relating to a method and apparatus for testing the performance of a frequency hopping communication device receiver. Background Technology

[0002] Frequency hopping communication (FHH) is a commonly used spread spectrum communication method that achieves anti-interference, anti-interception, and guaranteed communication quality by continuously changing the carrier frequency of the transmitted signal. By constantly changing the carrier frequency, FHH makes it difficult for interfering signals to continuously track and interfere. In complex electromagnetic environments with multipath interference, co-channel interference, or adjacent-channel interference, FHH can maintain communication stability and reliability. Because the carrier frequency of FHH changes randomly, it is difficult for the enemy to predict and intercept the communication signal, making it crucial in highly confidential situations such as military communications. Through reasonable frequency planning and allocation, FHH can enable multiple users to share the same frequency band, improving spectrum utilization and communication system capacity. FHH can adapt to different communication environments and service requirements; for example, it can meet different requirements for communication distance, transmission rate, and bit error rate by adjusting the frequency hopping pattern and parameters.

[0003] Frequency hopping communication equipment has many advantages such as strong anti-interference ability, high anti-interception performance, high spectrum utilization, strong adaptability, and anti-fading characteristics, which makes it play an important role in secure communication. Objectively and accurately testing and evaluating the performance of frequency hopping communication equipment is an important task. Equipment sensitivity is a key technical indicator for measuring the superior performance of communication equipment.

[0004] The traditional method for testing the receiver sensitivity of frequency-hopping communication equipment is performed under fixed-frequency communication conditions. While this method is convenient to operate, it ignores the inaccurate performance evaluation that may be caused by frequency-hopping operation and is also inconsistent with the operating conditions of the equipment itself. Summary of the Invention

[0005] The purpose of this invention is to provide a method and apparatus for testing the performance of a frequency-hopping communication device receiver, so as to achieve objective and accurate testing and evaluation of the sensitivity of the frequency-hopping communication device receiver.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A method for testing the performance of a frequency-hopping communication device receiver includes:

[0008] S1. Determine a suitable measurement frequency according to the operating frequency range of the device under test, and measure and calibrate the transmission power of the signal of the device under test using a frequency hopping device sensitivity measurement device based on the measurement frequency.

[0009] S2. Connect the device under test to the signal source and the device under test to the spectrum analyzer. Adjust the attenuation value of the adjustable attenuator to 0dB and measure and record the loss of the test link.

[0010] S3. Connect the companion device and the device under test to the test link and power them on to work in frequency hopping mode. The companion device sends an interrogation signal and the device under test responds. Adjust the attenuation of the adjustable attenuator 1 according to the response result of the device under test. Statistically record the maximum attenuation value when the device under test meets the minimum recognition probability requirement.

[0011] S4. The maximum value calculated based on the signal power of the accompanying device and the maximum attenuation value when the device under test meets the minimum recognition probability requirement is used as the receiving sensitivity of the device under test.

[0012] S5. In conjunction with the sensitivity test, reduce the attenuation of the adjustable attenuator 1, and statistically record the maximum attenuation value when the tested device meets the minimum recognition probability requirement.

[0013] S6. Calculate the dynamic range of the receiver of the device under test based on the maximum and minimum attenuation values ​​of the adjustable attenuator 1.

[0014] Preferably, determining the appropriate measurement frequency according to the operating frequency range of the device under test includes:

[0015] Remove the antenna of the accompanying test device, connect the accompanying test device to the power meter using an RF cable, and connect an attenuator with appropriate power tolerance and attenuation value in series between the accompanying test device and the instrument.

[0016] The selection of a suitable measurement frequency should follow the principle that the link loss fluctuation of the selected adjacent frequencies should not be too large. For low frequency bands, adjacent frequencies should avoid octaves. For high frequency bands, the interval between adjacent frequencies should be appropriately increased to moderately reduce the workload of measurement.

[0017] Preferably, the step of measuring and calibrating the transmission power of the signal of the auxiliary testing device using a measuring device according to the measuring frequency includes:

[0018] The accompanying testing device transmits a measurement signal at the appropriate measurement frequency, and uses the power meter to measure and record the signal power P. L =p1,p2,…p n ;

[0019] Replace the accompanying testing device with the signal source, and transmit a continuous wave signal with a power of 0 dBm at the appropriate measurement frequency. Measure and record the signal power P using the power meter. s =p s1 ,p s2 …p sn ;

[0020] Based on the measured signal power P L and the signal power P s The signal transmission power of the accompanying testing device at the appropriate measurement frequency point is calculated using the following formula:

[0021] P source =P L -P s .

[0022] Preferably, the step of connecting the test device to the signal source and the device under test to the spectrum analyzer, adjusting the attenuation value of the adjustable attenuator to 0dB, and measuring and recording the loss of the test link includes:

[0023] The signal source and the spectrum analyzer are turned on. The signal source sends a single-tone signal, and measurements are performed according to the appropriate measurement frequency. The loss of the test link is calculated based on the signal source's transmission power and the spectrum analyzer readings. los =L s1 ,L s2 …L sn .

[0024] Preferably, during the process of adjusting the attenuation of the adjustable attenuator 1, the adjustment is carried out step by step in the order of attenuation from large to small, with each adjustment being 1dB. The number of times the accompanying device sends signals and the sample size are determined according to the actual situation.

[0025] Preferably, when the attenuation value of the adjustable attenuator 1 is 0dB during the measurement process, but the device under test can still correctly identify the measured signal, the attenuation value of the fixed attenuator is appropriately reduced until the device under test can no longer correctly identify the measured signal.

[0026] Preferably, the formula for calculating the receiving sensitivity of the device under test is as follows:

[0027] P sensitivity =P source -L fad_1_max

[0028] P sensitivity =P sen_1 ,P sen_2 ,…P sen_n

[0029] Where P is taken sen_1 ,P sen_2 ,…P sen_n The maximum value of P is taken as the receiving sensitivity of the device under test. source L represents the signal power of the accompanying testing equipment. fad_1_max This is the maximum attenuation value for the device under test to meet the minimum recognition probability requirement.

[0030] Preferably, the formula for calculating the dynamic range of the receiver of the device under test is as follows:

[0031] P dynamic_range =L fad_1_max -L fad_1_min

[0032] Where P dynamic_range L represents the dynamic range of the receiver of the device under test. fad_1_max L represents the maximum attenuation value required for the device under test to meet the minimum recognition probability requirement. fad_1_min This is the maximum attenuation value for the device under test to meet the minimum recognition probability requirement.

[0033] A frequency hopping device sensitivity measurement device is used in the above-mentioned frequency hopping communication device receiver performance testing method, comprising: the frequency hopping device sensitivity measurement device is composed of a fixed attenuator 1, a fixed attenuator 2, a circulator 1, a circulator 2, an isolator 1, an isolator 2, an adjustable attenuator 1, an adjustable attenuator 2, and an RF cable.

[0034] The input terminal of the fixed attenuator 1 is connected to the RF interface of the antenna of the device under test via an RF cable. The output terminal of the fixed attenuator 1 is connected to the input or output terminal of the circulator 1. The input terminal of the circulator 1 is connected to the adjustable attenuator 1. The output terminal of the circulator 1 is connected to the adjustable attenuator 2.

[0035] The input terminal of the fixed attenuator 2 is connected to the RF interface of the antenna of the test equipment via an RF cable. The output terminal of the fixed attenuator 2 is connected to the input or output terminal of the circulator 2. The input terminal of the circulator 2 is connected to the isolator 2. The output terminal of the circulator 2 is connected to the isolator 1.

[0036] The isolator 1 is connected to the adjustable attenuator 1 via an RF cable, and the isolator 2 is connected to the adjustable attenuator 2 via an RF cable.

[0037] Compared with the prior art, the beneficial effects of the present invention are:

[0038] This invention can test and obtain the receiver sensitivity and dynamic range of the device under test in frequency hopping operation, restore and measure the technical performance of the device under test in normal operation to the greatest extent, realize the dynamic measurement of the performance status of the device under test, and give an objective and accurate evaluation result by statistically analyzing multiple test results, thereby achieving an objective evaluation of the performance of frequency hopping communication equipment. Attached Figure Description

[0039] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0040] Figure 1 This is a flowchart of the method steps of the present invention;

[0041] Figure 2 This is a block diagram of the sensitivity measurement device for the frequency hopping device of the present invention;

[0042] Figure 3 This is a flowchart of the frequency hopping communication device receiver performance testing method of the present invention. Detailed Implementation

[0043] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0044] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0045] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0046] As attached Figure 1 and attached Figure 3 As shown:

[0047] Example 1: This example provides a method for testing the performance of a frequency-hopping communication device receiver, including:

[0048] S1. According to the operating frequency range of the device under test [30MHz, 87.975MHz], determine the appropriate measurement frequency 30MHz, 33MHz, 36MHz...88.975MHz, and use the frequency hopping device sensitivity measurement device to measure and calibrate the transmission power of the signal of the device under test according to the measurement frequency;

[0049] Specifically, the measurement and calibration of the signal transmission power of the accompanying device using measuring equipment according to the measurement frequency includes:

[0050] The accompanying testing equipment transmits measurement signals at appropriate measurement frequencies of 30MHz, 33MHz, 36MHz…88.975MHz, and uses a power meter to measure and record the signal power P. L =10.2dBm,10.5dBm,10.4dBm…10.5dBm;

[0051] Replace the auxiliary testing equipment with a signal source, and transmit a continuous wave signal with a power of 0dBm at appropriate measurement frequencies of 30MHz, 33MHz, 36MHz…88.975MHz. Measure and record the signal power P using a power meter. s =-30.3dBm,-30.3dBm,-30.4dBm…-32.6dBm;

[0052] Based on the measured signal power P L and signal power P s The signal transmission power of the test equipment at appropriate measurement frequencies of 30MHz, 33MHz, 36MHz…88.975MHz is calculated using the following formula:

[0053] P source =40.5dBm,40.8dBm,40.8dBm…43.1dBm;

[0054] S2. Connect the device under test to the signal source and the device under test to the spectrum analyzer. Adjust the attenuation value of the adjustable attenuator to 0dB and measure and record the loss of the test link.

[0055] Connect the device under test to the signal source and the device under test to the spectrum analyzer. Adjust the attenuation of the adjustable attenuator to 0dB and measure and record the loss of the test link, including:

[0056] Turn on the signal generator and spectrum analyzer. The signal generator sends a single-tone signal. Measure at appropriate measurement frequencies of 30MHz, 33MHz, 36MHz…88.975MHz. Calculate the link loss based on the signal generator's transmit power and the spectrum analyzer readings. los =87.2dB,87.2dB,87.3dB…88dB;

[0057] S3. Connect the companion device and the device under test (DUT) to the test link and power them on in frequency hopping mode. The companion device sends an interrogation signal, and the DUT responds. Adjust the attenuation of adjustable attenuator 1 based on the DUT's response. Statistically record the maximum attenuation value L when the DUT meets the minimum recognition probability requirement. fad_1_max =55dB;

[0058] During the adjustment of the attenuation of adjustable attenuator 1, the attenuation is gradually adjusted in order from large to small, with each adjustment being 1dB, and the accompanying test equipment sends signals 400 times.

[0059] S4. Based on the signal power P of the accompanying testing equipment source = 40.5dBm, 40.8dBm, 40.8dBm…43.4dBm and the maximum attenuation value L when the device under test meets the minimum recognition probability requirement. fad_1_max =55dB The maximum value calculated is taken as the receiving sensitivity of the device under test -99.9dBm;

[0060] P sensitivity = -101.7dBm, -101.4dBm, -101.5dBm…-99.9dBm, take P sensitivity The maximum value of -99.9dBm is taken as the receiving sensitivity of the device under test;

[0061] S5. Combine sensitivity testing with reducing the attenuation of adjustable attenuator 1, and statistically record the maximum attenuation value L when the device under test meets the minimum recognition probability requirement. fad_1_min =10dB;

[0062] S6. The dynamic range of the receiver of the device under test is calculated to be 45dB based on the maximum and minimum attenuation values ​​of the adjustable attenuator 1.

[0063] This method can test and obtain the receiver sensitivity and dynamic range of the device under test in frequency hopping operation, restore and measure the technical performance of the device under test in normal operation to the greatest extent, and realize the dynamic measurement of the performance status of the device under test.

[0064] It can enable communication equipment to operate in frequency hopping mode, test its received signal sensitivity and dynamic range, and provide objective and accurate evaluation results by statistically analyzing multiple test results, thereby achieving an objective evaluation of the performance of frequency hopping communication equipment.

[0065] Specifically, determining the appropriate measurement frequency based on the operating frequency range of the device under test includes:

[0066] Remove the antenna of the test device, connect the test device to the power meter using an RF cable, and connect an attenuator with appropriate power tolerance and attenuation value in series between the test device and the instrument.

[0067] The selection of a suitable measurement frequency should follow the principle that the fluctuation of link loss between adjacent frequencies should not be too large to avoid increasing measurement errors. For low-frequency bands, octaves should be avoided between adjacent frequencies. For high-frequency bands, the spacing between adjacent frequencies should be appropriately increased to moderately reduce the workload of measurement.

[0068] Specifically, if the attenuation value of the adjustable attenuator 1 is 0dB during the measurement process, but the device under test can still correctly identify the measured signal, the attenuation value of the fixed attenuator should be appropriately reduced until the device under test can no longer correctly identify the measured signal.

[0069] Specifically, the formula for calculating the receiver sensitivity of the device under test is as follows:

[0070] P sensitivity =P source -L fad_1_max

[0071] P sensitivity =P sen_1 ,P sen_2 ,…P sen_n

[0072] Where P is taken sen_1 ,P sen_2 ,…P sen_n The maximum value of P is taken as the receiving sensitivity of the device under test. source L represents the signal power of the accompanying testing equipment. fad_1_max This is the maximum attenuation value for the device under test to meet the minimum recognition probability requirement.

[0073] Specifically, the formula for calculating the dynamic range of the receiver of the device under test is as follows:

[0074] P dynamic_range =L fad_1_max -L fad_1_min

[0075] Where P dynamic_range L represents the dynamic range of the receiver of the device under test. fad_1_max L represents the maximum attenuation value required for the device under test to meet the minimum recognition probability requirement. fad_1_min This is the maximum attenuation value for the device under test to meet the minimum recognition probability requirement.

[0076] As shown above, the testing process is as follows:

[0077] Determine the measurement calibration frequency;

[0078] Calibrate the power of the test equipment;

[0079] Set up the measurement device and measure and record the test link loss;

[0080] Power on the equipment and take measurements;

[0081] Adjust the attenuation value of adjustable attenuator 1;

[0082] Does the recognition probability requirement meet? If no, return to the previous step; if yes, proceed to the next step.

[0083] Statistically analyze and calculate the sensitivity and dynamic range of the tested equipment;

[0084] Finish.

[0085] As attached Figure 2 As shown:

[0086] Example 2: A frequency hopping device sensitivity measurement device, used in the above-mentioned frequency hopping communication device receiver performance testing method, comprising: the frequency hopping device sensitivity measurement device consists of a fixed attenuator 1, a fixed attenuator 2, a circulator 1, a circulator 2, an isolator 1, an isolator 2, an adjustable attenuator 1, an adjustable attenuator 2, and an RF cable;

[0087] The input terminal of the fixed attenuator 1 is connected to the RF interface of the antenna of the device under test via an RF cable. The output terminal of the fixed attenuator 1 is connected to the input or output terminal of the circulator 1. The input terminal of the circulator 1 is connected to the adjustable attenuator 1. The output terminal of the circulator 1 is connected to the adjustable attenuator 2.

[0088] The input terminal of the fixed attenuator 2 is connected to the RF interface of the antenna of the test equipment via an RF cable. The output terminal of the fixed attenuator 2 is connected to the input or output terminal of the circulator 2. The input terminal of the circulator 2 is connected to the isolator 2. The output terminal of the circulator 2 is connected to the isolator 1.

[0089] Isolator 1 is connected to adjustable attenuator 1 via an RF cable, and isolator 2 is connected to adjustable attenuator 2 via an RF cable.

[0090] As can be seen from the above, at the device under test and the device under test, 40dB fixed attenuator 1 and fixed attenuator 2 are respectively connected according to the device signal transmission power and the maximum power that the two circulators can withstand.

[0091] The input terminal of circulator 1 is connected to attenuator 1 with a step size of 1dB and a maximum adjustable size of 70dB, and the output terminal of circulator 1 is connected to attenuator 2 with a step size of 1dB and a maximum adjustable size of 70dB.

[0092] The input terminal of circulator 2 is connected to 40dB isolator 2, and the output terminal of circulator 2 is connected to 40dB isolator 1.

[0093] Adjust the attenuation value of adjustable attenuator 2 to 50dB to ensure that when the output signal power of the device under test reaches the device under test, it can just trigger the device under test to work normally.

[0094] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0095] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the invention as currently considered, or those features that are not relevant to implementing the invention) may be omitted.

[0096] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0097] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A method for testing the performance of a frequency-hopping communication device receiver, characterized in that, include: S1. Determine a suitable measurement frequency according to the operating frequency range of the device under test, and measure and calibrate the transmission power of the signal of the device under test using a frequency hopping device sensitivity measurement device based on the measurement frequency. S2. Connect the device under test to the signal source and the device under test to the spectrum analyzer. Adjust the attenuation value of the adjustable attenuator 1 to 0dB and measure and record the loss of the test link. S3. Connect the companion device and the device under test to the test link and power them on to work in frequency hopping mode. The companion device sends an interrogation signal and the device under test responds. Adjust the attenuation of the adjustable attenuator 1 according to the response result of the device under test. Statistically record the maximum attenuation value when the device under test meets the minimum recognition probability requirement. S4. The maximum value calculated based on the signal power of the companion device and the maximum attenuation value when the device under test meets the minimum recognition probability requirement is used as the receiving sensitivity of the device under test. The attenuation value of the adjustable attenuator 2 is adjusted to ensure that when the output signal power of the device under test reaches the companion device, it can just trigger the companion device to work normally. S5. In conjunction with the sensitivity test, reduce the attenuation of the adjustable attenuator 1, and statistically record the minimum attenuation value when the tested device meets the minimum recognition probability requirement. S6. Calculate the dynamic range of the receiver of the device under test based on the maximum and minimum attenuation values ​​of the adjustable attenuator 1. The step of measuring and calibrating the transmission power of the signal of the auxiliary testing device using a measuring device according to the measuring frequency includes: The accompanying testing equipment transmits a measurement signal at the appropriate measurement frequency, and uses a power meter to measure and record the signal power. ; Replace the accompanying testing equipment with a signal source, and transmit a continuous wave signal with a power of 0 dBm at the appropriate measurement frequency. Measure and record the signal power using a power meter. ; Based on the measured signal power and the signal power The formula for calculating the signal power of the accompanying testing equipment is as follows: ； The steps of connecting the device under test to the signal source and the device under test to the spectrum analyzer, adjusting the attenuation value of the adjustable attenuator 1 to 0dB, and measuring and recording the loss of the test link include: Turn on the signal source and the spectrum analyzer. The signal source sends a single-tone signal. Measure the signal at the appropriate measurement frequency. Calculate the link loss based on the signal source's transmission power and the spectrum analyzer readings. ; During the process of adjusting the attenuation of the adjustable attenuator 1, the adjustment is carried out step by step in the order of attenuation from large to small, with each adjustment being 1dB. The number of times the accompanying device sends signals and the sample size are determined according to the actual situation. The formula for calculating the receiver sensitivity of the device under test is as follows: ； ； Among them, take The maximum value is taken as the receiving sensitivity of the device under test. The signal power of the accompanying testing equipment, The maximum attenuation value for the tested device to meet the minimum recognition probability requirement; The formula for calculating the dynamic range of the receiver of the device under test is as follows: ； in The dynamic range of the receiver of the device under test. This is the maximum attenuation value required for the tested device to meet the minimum recognition probability requirement. The minimum attenuation value is the minimum recognition probability required for the device under test.

2. The method for testing the performance of a frequency-hopping communication device receiver according to claim 1, characterized in that, Determining a suitable measurement frequency based on the operating frequency range of the device under test includes: Remove the antenna of the accompanying test device, connect the accompanying test device to the power meter using an RF cable, and connect an attenuator with appropriate power tolerance and attenuation value in series between the accompanying test device and the instrument. The selection of a suitable measurement frequency should follow the principle that the link loss fluctuation of the selected adjacent frequencies should not be too large. For low frequency bands, adjacent frequencies should avoid octaves. For high frequency bands, the interval between adjacent frequencies should be appropriately increased to moderately reduce the workload of measurement.

3. The method for testing the performance of a frequency-hopping communication device receiver according to claim 1, characterized in that, If the attenuation value of the adjustable attenuator 1 is 0dB during the measurement process, but the device under test can still correctly identify the measured signal, the attenuation value of the fixed attenuator 1 should be appropriately increased until the device under test can no longer correctly identify the measured signal.

4. A sensitivity measuring device for frequency hopping equipment, characterized in that, A method for testing the performance of a frequency-hopping communication device receiver according to any one of claims 1-3, comprising: the frequency-hopping device sensitivity measuring device is composed of a fixed attenuator 1, a fixed attenuator 2, a circulator 1, a circulator 2, an isolator 1, an isolator 2, an adjustable attenuator 1, an adjustable attenuator 2, and an RF cable. The input terminal of the fixed attenuator 1 is connected to the RF interface of the antenna of the device under test via an RF cable. The output terminal of the fixed attenuator 1 is connected to the input or output terminal of the circulator 1. The input terminal of the circulator 1 is connected to the adjustable attenuator 1. The output terminal of the circulator 1 is connected to the adjustable attenuator 2. The input terminal of the fixed attenuator 2 is connected to the RF interface of the antenna of the test equipment via an RF cable. The output terminal of the fixed attenuator 2 is connected to the input or output terminal of the circulator 2. The input terminal of the circulator 2 is connected to the isolator 2. The output terminal of the circulator 2 is connected to the isolator 1. The isolator 1 is connected to the adjustable attenuator 1 via an RF cable, and the isolator 2 is connected to the adjustable attenuator 2 via an RF cable.

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