Testing device and testing method for redundant backup equipment of satellite earth station

Abstract

The present invention relates to a test device and a test method for redundant backup equipment of a satellite earth station. The redundant backup equipment is provided in plurality, and the test device comprises: a signal adapter unit, respectively connected to a front-stage switch and a rear-stage switch of each redundant backup equipment; a signal switching unit, connected to the signal adapter unit; a signal generating unit, connected to the signal switching unit; and a spectrum acquisition unit, connected to the signal switching unit; wherein the front-stage switch is located at the input end of the redundant backup equipment, and the rear-stage switch is located at the output end of the redundant backup equipment. The test method switches different redundant backup equipment for testing through the signal switching unit, and can be tested at any time without affecting the signal transmission of the satellite earth station. This not only avoids the interruption of signal transmission during testing, but also saves manpower and material resources, improves work efficiency, and can achieve long-term monitoring of equipment performance.

Description

Technical Field

[0001] The present invention relates to the technical field of satellite communications, and in particular to a testing device and a testing method for redundant backup equipment of a satellite earth station. Background Art

[0002] To improve the reliability of satellite earth station business systems, redundant backup configurations are usually used for key uplink and downlink equipment. Since it is impossible to fully monitor the performance indicators of the equipment during business transmission, it is necessary to regularly conduct centralized performance indicator tests on the equipment in the system to ensure the availability of the system equipment and avoid the gradual deterioration of performance indicators after long-term operation of the equipment and the inability to meet the use requirements. In particular, it is necessary to avoid the situation where the backup equipment is discovered to be unusable when the main equipment fails and the backup equipment needs to be activated, causing system transmission interruption. The typical system block diagram of a satellite earth station is as follows: Figure 1 shown.

[0003] The traditional method for testing the performance of redundant backup equipment in satellite earth stations involves removing the equipment from the redundant backup system for testing. This involves modifying the physical links, which can affect the normal transmission of service signals. This typically requires regular, dedicated system downtime requested from the user for maintenance and overhaul. Consequently, this traditional method has the following shortcomings: The equipment under test must be removed from the redundant system, requiring the disassembly and installation of waveguides and various equipment cables. This results in a high workload, lengthy testing times, and low efficiency. Furthermore, because system equipment testing can affect the normal transmission of service signals, dedicated system downtime requested from the user is required for maintenance and overhaul, which can only be performed a limited number of times per year. This makes it impossible to continuously monitor the performance of redundant equipment and promptly identify potential degradation in equipment performance. Summary of the Invention

[0004] In view of this, the present invention aims to propose a testing device and testing method for redundant backup equipment of an earth satellite station, which can be tested at any time without affecting the signal transmission of the satellite earth station. It not only avoids the interruption of signal transmission during testing, but also saves manpower and material resources, improves work efficiency, and can realize long-term monitoring of equipment performance.

[0005] On the one hand, an embodiment of the present invention proposes a testing device for redundant backup equipment of a satellite earth station, wherein there are multiple redundant backup devices, and the testing device includes: a signal adaptation unit, respectively connected to the front-stage switch and the rear-stage switch of each redundant backup device; a signal switching unit, connected to the signal adaptation unit; a signal generating unit, connected to the signal switching unit; and a signal adaptation unit, connected to the signal switching unit; wherein the front-stage switch is located at the input end of the redundant backup device, and the rear-stage switch is located at the output end of the redundant backup device.

[0006] Preferably, the redundant backup device is one of a modulator, an up-converter, a high-frequency power amplifier, a low-noise amplifier, and a down-converter.

[0007] Preferably, the signal adaptation unit is an attenuator or a coupler, which is used to adapt the signal type and signal level between the signal generating unit, the spectrum acquisition unit and the redundant backup device.

[0008] Preferably, the output signal frequency of the signal generating unit includes intermediate frequency, L band, and radio frequency band, and the output signal type of the signal generating unit includes single carrier, modulated wave, and swept frequency signal.

[0009] Preferably, the input signal of the signal switching unit includes the output signal of the signal generating unit and the output signal of the rear-stage switch of the redundant backup device, and the output signal of the signal switching unit includes the input signal of the spectrum acquisition unit and the input signal of the front-stage switch of the redundant backup device.

[0010] Preferably, each of the redundant backup devices includes a primary device and a backup device connected in parallel with each other, and the primary device and the backup device are respectively connected in series with the front-stage switch at the input end and are respectively connected in series with the rear-stage switch at the output end.

[0011] Preferably, each of the redundant backup devices includes a main device and a backup device connected in parallel with each other, the front-stage switch includes a first front-stage switch and a second front-stage switch, the main device is connected in series with the first front-stage switch at the input end, and the backup device is connected in series with the second front-stage switch at the input end; the redundant backup device also includes a power distribution unit at the input end, and the first front-stage switch and the second front-stage switch are respectively connected in series to the power distribution unit; the main device and the backup device are respectively connected in series with the rear-stage switch at the output end.

[0012] On the other hand, an embodiment of the present invention further provides a method for testing redundant backup equipment of a satellite earth station, wherein the redundant backup equipment is tested based on the testing device for redundant backup equipment of a satellite earth station as described in any one of the above aspects, and the testing method includes:

[0013] S100, selecting one of the plurality of redundant backup devices as a device under test, querying the online status of the device under test, and if the device under test is in an online state, switching the device under test to an offline state through the front-stage switch and the rear-stage switch;

[0014] S200, modifying the parameters of the device under test according to the test conditions;

[0015] S300, interactively connecting the signal generating unit via the signal adapting unit to the front-stage switch through the signal switching unit, and interactively connecting the rear-stage switch via the signal adapting unit to the spectrum acquisition unit;

[0016] S400, setting parameters of the signal generating unit and the spectrum collecting unit so that the signal generating unit outputs a test signal and the spectrum collecting unit measures a test spectrum;

[0017] S500: Calculate test results based on test data, and store the test data and the test results.

[0018] Preferably, before step S100, the method further includes calibrating the device under test:

[0019] S010, connecting the signal generating unit to the spectrum collecting unit through the signal switching unit;

[0020] S020, setting the output frequency of the signal generating unit to f0, and recording the actual signal transmission frequency of the signal generating unit measured on the spectrum acquisition unit to be f1;

[0021] S030, calculating f1-f0 and comparing the result Δf' with Δf in the frequency deviation table. If Δf' is different from Δf, modifying the value of Δf in the frequency deviation table to the value of Δf';

[0022] S040, setting the output frequency of the signal generating unit to f0-Δf, measuring the link insertion loss of the link to be tested and the frequency point to be tested on the spectrum acquisition unit to A i , wherein the link to be tested is one of the link between the signal generating unit and the spectrum acquisition unit, the signal generating unit and the front-stage switch, and the rear-stage switch and the spectrum acquisition unit;

[0023] S050, calculate the correction value A of the link insertion loss c =A i -A i0 , where A i0 The link insertion loss value of the link to be tested and the frequency to be tested described in the link insertion loss table;

[0024] S060, if A c If it is not equal to 0, the insertion loss value A of all the frequency points to be measured in the link insertion loss table is j0 Corrected to A j =A j0 -A c ;

[0025] The data in the frequency deviation table and the link insertion loss table are all data recorded during the last calibration.

[0026] Preferably, the test items of the test method are any one of the frequency range, gain, output power, spurious, phase noise, 3dB bandwidth and 30dB bandwidth of the redundant backup device, wherein the output power includes the output level range, P 1dB At least one of compression point output power and saturation output power;

[0027] The gain is denoted as G, and the calculation formula is G=P2-P1+A1+A2;

[0028] The output power is recorded as P, and the calculation formula is P=P2+A2;

[0029] Among them, P1 is the output signal level set by the signal generating unit, P2 is the input signal level measured by the spectrum acquisition unit, A1 is the insertion loss value of the link from the signal generating unit to the front-stage switch through the signal adaptation unit and the signal switching unit, and A2 is the insertion loss value of the link from the rear-stage switch to the spectrum acquisition unit through the signal adaptation unit and the signal switching unit.

[0030] The testing device and testing method for redundant backup equipment of a satellite earth station in an embodiment of the present invention switches different redundant backup equipment for testing through a signal switching unit. Testing can be performed at any time without affecting the signal transmission of the satellite earth station. This not only avoids interruption of signal transmission during testing, but also saves manpower and material resources, improves work efficiency, and can realize long-term monitoring of equipment performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0032] Figure 1 This is a schematic diagram of the system structure of the current satellite earth station redundant backup equipment;

[0033] Figure 2 A schematic structural diagram of a test device for redundant backup equipment of a satellite earth station according to an embodiment of the present invention;

[0034] Figure 3 This is a schematic structural diagram of a first redundant backup device according to an embodiment of the present invention;

[0035] Figure 4 This is a schematic structural diagram of a second redundant backup device according to an embodiment of the present invention;

[0036] Figure 5 Schematic diagram of the connection between the test device of the embodiment of the present invention and the first type of redundant backup equipment

[0037] Figure 6 A schematic diagram of the connection between the test device according to an embodiment of the present invention and the second type of redundant backup equipment;

[0038] Figure 7 A schematic diagram of a long-term calibration process according to an embodiment of the present invention;

[0039] Figure 8 and Figure 9 A schematic diagram of a short-term calibration process according to an embodiment of the present invention;

[0040] Figure 10 and Figure 11 The figure is a flow chart of a method for testing redundant backup equipment of a satellite earth station according to an embodiment of the present invention. DETAILED DESCRIPTION

[0041] The description of the embodiments in this specification should be combined with the corresponding drawings, which should be considered a complete part of this specification. In the drawings, the shapes and thicknesses of the embodiments may be exaggerated and indicated for simplicity or convenience. Furthermore, the various structural components in the drawings will be described separately. It is worth noting that components not shown in the drawings or not described in words are known to those of ordinary skill in the art.

[0042] The description of the embodiments herein and any references to directions and orientations are for ease of description only and are not to be construed as limiting the scope of the present invention. The following description of the preferred embodiments may involve combinations of features, which may exist independently or in combination. The present invention is not specifically limited to the preferred embodiments. The scope of the present invention is defined by the claims.

[0043] like Figure 2 FIG. 1 is a schematic diagram of a test device for a redundant backup device of a satellite earth station according to an embodiment of the present invention, wherein the redundant backup device is provided with multiple, namely Figure 2 The test apparatus comprises redundant backup devices 1 to N. The test apparatus includes a signal adapter unit, a signal switching unit, a signal generating unit, and a spectrum acquisition unit. The signal adapter unit is connected to the front-stage switch and the rear-stage switch of each redundant backup device, respectively. The signal switching unit is connected to the signal adapter unit. The signal generating unit and the spectrum acquisition unit are both connected to the signal switching unit. The front-stage switch is located at the input end of the redundant backup device, and the rear-stage switch is located at the output end of the redundant backup device.

[0044] like Figure 3-Figure 4 As shown, in this embodiment, the redundant backup devices each include a primary device and a backup device connected in parallel. The redundant backup devices are divided into two types based on their different input-end structures. In the first type of redundant backup device, the primary and backup devices are respectively connected in series with the front-stage switch at the input and in series with the rear-stage switch at the output. In other words, the front-stage switch-primary device-rear-stage switch forms a branch for the primary device, and the front-stage switch-backup device-rear-stage switch forms a branch for the backup device. In another type of redundant backup device, the front-stage switch includes a first front-stage switch and a second front-stage switch. The primary device is connected in series with the first front-stage switch at the input, and the backup device is connected in series with the second front-stage switch at the input. The device also includes a power distribution unit at the input, with the first and second front-stage switches connected in series to the power distribution unit. The primary and backup devices are respectively connected in series with the rear-stage switch at the output. In other words, the power distribution unit-first front-stage switch-primary device-rear-stage switch forms a branch for the primary device, and the power distribution unit-second front-stage switch-backup device-rear-stage switch forms a branch for the backup device.

[0045] like Figure 2 、 Figure 5 and Figure 6 As shown, the multiple redundant backup devices of this embodiment may include the first redundant backup device and / or the second redundant backup device mentioned above. Between adjacent redundant backup devices, the input end of the previous redundant backup device is connected to the output end of the next redundant backup device, and the front-stage switch and the rear-stage switch of each redundant backup device are connected to the signal adapter unit to facilitate switching between online and offline states during testing. The redundant backup device can back up the device under test on a one-to-one basis. For the test device of this embodiment, the device under test can be a modulator, an up-converter, a high power amplifier, a low noise amplifier, a down-converter, etc. Among them, in Figure 5 In the figure, S1 and S2 are the front switch and back switch of the first redundant backup device respectively. Figure 6 In the figure, S1, S2 and S3 are respectively the rear stage switch, the first front stage switch and the second front stage switch of the second redundant backup device.

[0046] like Figure 2 、 Figure 5 and Figure 6As shown, in this embodiment, the signal adaptation unit is an attenuator or a coupler, which is used to adapt the signal type and signal level between the signal generating unit, the spectrum acquisition unit and the redundant backup device, so that the test signal meets the input and output signal requirements of the test device and the device to be tested. The output signal frequency of the signal generating unit includes intermediate frequency, L band, and radio frequency band. The output signal type of the signal generating unit includes single carrier, modulated wave, and swept frequency signal, and the output signal level is adjustable. The input signal of the signal switching unit includes the output signal of the signal generating unit and the output signal of the rear-stage switch of the redundant backup device. The output signal of the signal switching unit includes the input signal of the spectrum acquisition unit and the input signal of the front-stage switch of the redundant backup device. The signal switching unit can connect the input signal to different output signals according to the test requirements. The spectrum acquisition unit is used for signal testing. The test track mode includes real-time track, maximum hold track, and minimum hold track. It can test the level value corresponding to the frequency point of the spectrum signal, the level and frequency difference of different frequency points, etc.

[0047] like Figure 2 、 Figure 5 and Figure 6 As shown, in this embodiment, the test apparatus also includes a remote control computer and a transmission network. The transmission network connects the redundant backup devices, the signal generation unit, the signal switching unit, the spectrum acquisition unit, and the remote control computer, and is used to transmit device control and spectrum test data information. The remote control computer is equipped with automatic device testing software, whose functions include sending control commands to the redundant backup devices to control input and output switch states, and parameters such as the frequency, attenuation, and transmission status of the device under test; sending test commands to the signal generation unit and the spectrum acquisition unit; and collecting, calculating, and storing test data.

[0048] Compared with the prior art, the testing device of the embodiment of the present invention can achieve the following technical effects: there is no need to remove the device to be tested from the system, the time required for automatic testing is short and the work efficiency is high; the testing process of redundant backup equipment will not cause signal transmission interruption, and the equipment can be tested at any time, which is convenient for continuous monitoring of equipment performance indicators and timely discovery of hidden dangers of equipment performance indicator degradation.

[0049] like Figure 7-11 As shown, it is a schematic diagram of the testing method of the satellite earth station redundant backup equipment of an embodiment of the present invention. The redundant backup equipment can be tested based on the testing device of the above-mentioned embodiment of the present invention. The testing work includes three aspects: long-term calibration, short-term calibration and automatic testing.

[0050] Long-term calibration includes calibrating the insertion loss values ​​of each link at different frequencies when the test device is used for the first time and recording them in the link insertion loss table as a benchmark for subsequent tests. The test device also needs to calibrate the link insertion loss at long intervals to ensure that the device performance meets the usage requirements. Since the link is composed of passive components such as coaxial cables and signal adapter units, the performance is stable and is less affected by environmental changes without human intervention. Therefore, long-term calibration only needs to be performed once a year.

[0051] like Figure 7 As shown in the figure, the steps of long-term calibration mainly include:

[0052] (1) Initially, the insertion loss of different signal links at different frequencies through the signal switching unit needs to be calibrated. The signal link includes the signal generating unit through the signal switching unit to the spectrum acquisition unit, the signal generating unit through the signal switching unit to the front-stage switch of the device under test, and the rear-stage switch of the device under test through the signal switching unit to the spectrum acquisition unit; the frequency point is selected according to the frequency point requirements of the device under test and the test item;

[0053] (2) Store the insertion loss data of each link in the system into the link insertion loss table in the remote control computer equipment test software database as initial data A i0 , the link insertion loss table template is shown in the following table:

[0054]

[0055]

[0056] (3) Recalibrate the insertion loss of each link in the system once every year, and use the recalibrated link insertion loss data Ai to revise the link insertion loss table, and repeat this process.

[0057] like Figure 8 and Figure 9 As shown in the figure, due to the long-term operation of the signal generator unit, the level and frequency deviations will occur due to the aging of the device and the change of ambient temperature. Short-term calibration is used to automatically eliminate this deviation. Depending on the cause of the deviation, short-term calibration must be performed before each test. Short-term calibration includes:

[0058] S010, connecting the signal generating unit to the spectrum collecting unit through the signal switching unit;

[0059] S020, setting the output frequency of the signal generating unit to f0, and recording the actual signal transmission frequency of the signal generating unit measured on the spectrum acquisition unit to be f1;

[0060] S030, calculate f1-f0 and compare the result Δf' with Δf in the frequency deviation table. If Δf' is different from Δf, modify the value of Δf in the frequency deviation table to the value of Δf' and proceed to S040. Otherwise, proceed directly to S040;

[0061] S040, set the output frequency of the signal generating unit to f0-Δf, and measure the link insertion loss of the link to be tested and the frequency point to be tested on the spectrum acquisition unit to A i , wherein the link to be tested is one of the links from the signal generating unit to the spectrum acquisition unit, from the signal generating unit to the front-stage switch, and from the back-stage switch to the spectrum acquisition unit;

[0062] S050, calculate the correction value A of the link insertion loss c =A i -A i0 , where A i0 The link insertion loss value of the link to be tested and the frequency to be tested in the link insertion loss table;

[0063] S060, if A c If it is not equal to 0, the insertion loss value A of all the frequency points to be measured in the link insertion loss table is j0 Corrected to A j =A j0 -A c .

[0064] The data in the frequency deviation table and the link insertion loss table are all recorded during the last calibration. That is, in step S020, f0 and f1 are recorded in the frequency deviation table for next use. The template of the frequency deviation table is as follows:

[0065]

[0066]

[0067] like Figure 10 and Figure 11 As shown, the test method of the satellite earth station redundant backup device of this embodiment includes:

[0068] S100, selecting one of the plurality of redundant backup devices as a device under test, querying the online status of the device under test, and if it is in the online state, switching the device under test to the offline state through the front-stage switch and the rear-stage switch, and proceeding to step S200; otherwise, directly proceeding to step S200;

[0069] Before step S100, the short-term calibration (i.e., steps S010 to S060) as described above is performed to ensure that the performance of the test device meets the requirements;

[0070] S200, adjusting the parameters of the device under test according to the test conditions;

[0071] The test conditions include adjusting the parameters of the device under test according to the type of the device under test and the test item requirements, such as modifying the transmission frequency value of the device under test, setting the built-in attenuation value of the device under test to zero, adjusting the transmission power of the device under test, etc. This embodiment does not impose specific restrictions on this.

[0072] The device test software in the remote control computer sends control commands to the device under test according to specific test items to control the device under test to adjust parameters, including output frequency, attenuation, transmission status, etc., to meet the device test conditions;

[0073] S300, the device test software in the remote control computer sends a control command to the signal switching unit, so that the signal generating unit is interactively connected to the front-stage switch via the signal adaptation unit, and the rear-stage switch is interactively connected to the spectrum acquisition unit via the signal adaptation unit.

[0074] S400, the device test software in the remote control computer sends a test command to the signal generating unit and the spectrum acquisition unit according to the specific test item, sets the parameters of the signal generating unit and the spectrum acquisition unit, causes the signal generating unit to output a test signal, and the spectrum acquisition unit to measure the test spectrum;

[0075] S500, after the test is completed, the test software in the remote control computer calculates the test results based on the test data and the test spectrum, and stores the test data and the test results in the remote control computer.

[0076] The test device and test method of this embodiment can be used to test any one of the frequency range, gain, output power, spurious, phase noise, 3dB bandwidth and 30dB bandwidth of the redundant backup equipment of the satellite earth station, wherein the output power includes the output level range, P 1dB At least one of compression point output power and saturation output power.

[0077] This embodiment involves gain and output power (output power includes output level range, P 1dB When testing compression point output power and saturation output power, it is necessary to query the data in the link insertion loss table for measurement and calculation. Specifically, the signal generation unit sets the output signal level to P1 (dBm), the spectrum acquisition unit measures the input signal level to P2 (dBm), and the link insertion loss value of the corresponding frequency point of the link is queried in the link insertion loss table. The link insertion loss value from the signal generation unit through the signal switching unit to the front-stage switch of the device under test is A1 (dB), and the link insertion loss value from the rear-stage switch of the device under test through the signal switching unit to the spectrum acquisition unit is A2 (dB). Then:

[0078] The gain measurement calculation formula is G (dB) = P2-P1+A1+A2;

[0079] The output power measurement calculation formula is P (dBm) = P2 + A2.

[0080] The testing device and testing method for redundant backup equipment of an earth satellite station of the present invention switches different redundant backup equipment for testing through a signal switching unit, and can perform testing at any time without affecting the signal transmission of the satellite earth station. This not only avoids the interruption of signal transmission during testing, but also saves manpower and material resources, and improves work efficiency. At the same time, based on a remote control computer and a test program, long-term online monitoring of equipment performance can be achieved, replacing the original manual monitoring, so that problems can be discovered and solved at any time.

[0081] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A test device for redundant backup equipment of a satellite earth station, wherein the redundant backup equipment is provided in plurality, characterized in that: The testing device comprises: A signal adapter unit is connected to the front-stage switch and the rear-stage switch of each redundant backup device respectively; A signal switching unit connected to the signal adapting unit; a signal generating unit connected to the signal switching unit; and A spectrum acquisition unit connected to the signal switching unit; Wherein, the front-stage switch is located at the input end of the redundant backup device, and the rear-stage switch is located at the output end of the redundant backup device; The signal adaptation unit is an attenuator or a coupler, which is used to adapt the signal type and signal level between the signal generating unit, the spectrum acquisition unit and the redundant backup device; Each of the redundant backup devices includes a primary device and a backup device connected in parallel, wherein the primary device and the backup device are respectively connected in series with the front-stage switch at the input end and are respectively connected in series with the rear-stage switch at the output end; or Each of the redundant backup devices includes a primary device and a backup device connected in parallel with each other, the front-stage switch includes a first front-stage switch and a second front-stage switch, the primary device is connected in series with the first front-stage switch at the input end, and the backup device is connected in series with the second front-stage switch at the input end; The redundant backup device further includes a power distribution unit at the input end, and the first front-stage switch and the second front-stage switch are respectively connected in series to the power distribution unit; The main device and the backup device are respectively connected in series with the subsequent switch at the output end; One of the redundant backup devices is selected as the device to be tested, and the online status of the device to be tested is queried. If the device is in the online state, the device to be tested is switched to the offline state through the front-stage switch and the rear-stage switch.

2. The test device for redundant backup equipment of a satellite earth station according to claim 1, characterized in that: The redundant backup device is one of a modulator, an up-converter, a high-frequency power amplifier, a low-noise amplifier, and a down-converter.

3. The test device for redundant backup equipment of a satellite earth station according to claim 1, characterized in that: The output signal frequency of the signal generating unit includes intermediate frequency, L band, and radio frequency band, and the output signal type of the signal generating unit includes single carrier, modulated wave, and swept frequency signal.

4. The test device for redundant backup equipment of a satellite earth station according to claim 1, characterized in that: The input signal of the signal switching unit includes the output signal of the signal generating unit and the output signal of the rear switch of the redundant backup device, and the output signal of the signal switching unit includes the input signal of the spectrum acquisition unit and the input signal of the front switch of the redundant backup device.

5. A method for testing redundant backup equipment of a satellite earth station, comprising testing the redundant backup equipment of a satellite earth station based on the testing device for redundant backup equipment of a satellite earth station according to any one of claims 1 to 4, wherein the redundant backup equipment is tested, The test method includes: S100, selecting one of the plurality of redundant backup devices as a device under test, querying the online status of the device under test, and if the device under test is in an online state, switching the device under test to an offline state through the front-stage switch and the rear-stage switch; S200, adjusting the parameters of the device under test according to the test conditions; S300, interactively connecting the signal generating unit via the signal adapting unit to the front-stage switch through the signal switching unit, and interactively connecting the rear-stage switch via the signal adapting unit to the spectrum acquisition unit; S400, setting parameters of the signal generating unit and the spectrum collecting unit so that the signal generating unit outputs a test signal and the spectrum collecting unit measures a test spectrum; S500: Calculate test results based on test data, and store the test data and the test results.

6. The method for testing redundant backup equipment of a satellite earth station according to claim 5, characterized in that: Before step S100, the process further includes calibrating the device under test: S010, connecting the signal generating unit to the spectrum collecting unit through the signal switching unit; S020, setting the output frequency of the signal generating unit to f0, and recording the actual signal transmission frequency of the signal generating unit measured on the spectrum acquisition unit to be f1; S030, calculating f1-f0 and comparing the result Δf' with Δf in the frequency deviation table. If Δf' is different from Δf, modifying the value of Δf in the frequency deviation table to the value of Δf'; S040, setting the output frequency of the signal generating unit to f0-Δf, measuring the link insertion loss of the link to be tested and the frequency point to be tested on the spectrum acquisition unit to A i , wherein the link to be tested is one of the link between the signal generating unit and the spectrum acquisition unit, the signal generating unit and the front-stage switch, and the rear-stage switch and the spectrum acquisition unit; S050, calculate the correction value A of the link insertion loss c =A i -A i0 , where A i0 The link insertion loss value of the link to be tested and the frequency to be tested described in the link insertion loss table; S060, if A c If it is not equal to 0, the insertion loss value A of all the frequency points to be measured in the link insertion loss table is j0 Corrected to A j =A j0 -A c ; The data in the frequency deviation table and the link insertion loss table are all data recorded during the last calibration.

7. The method for testing redundant backup equipment of a satellite earth station according to claim 5 or 6, characterized in that: The test method can test any one of the frequency range, gain, output power, spurious, phase noise, 3dB bandwidth and 30dB bandwidth of the redundant backup device, wherein the output power includes the output level range, P 1dB At least one of compression point output power and saturation output power; The gain is recorded as G, and the calculation formula is G=P2-P1+A1+A2; The output power is recorded as P, and the calculation formula is P=P2+A2; Among them, P1 is the output signal level set by the signal generating unit, P2 is the input signal level measured by the spectrum acquisition unit, A1 is the insertion loss value of the link from the signal generating unit to the front-stage switch through the signal adaptation unit and the signal switching unit, and A2 is the insertion loss value of the link from the rear-stage switch to the spectrum acquisition unit through the signal adaptation unit and the signal switching unit.

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