CN114089049A - Antenna test calibration method and device, electronic equipment and storage medium - Google Patents
Antenna test calibration method and device, electronic equipment and storage medium Download PDFInfo
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- CN114089049A CN114089049A CN202111373706.9A CN202111373706A CN114089049A CN 114089049 A CN114089049 A CN 114089049A CN 202111373706 A CN202111373706 A CN 202111373706A CN 114089049 A CN114089049 A CN 114089049A
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Abstract
The present disclosure relates to the field of antenna calibration technologies, and in particular, to a calibration method and apparatus for antenna test, an electronic device, and a storage medium. Firstly, carrying out the 1 st antenna test on a transmitting antenna and a receiving antenna to obtain the 1 st measured value of each channel in a multi-channel switch box; obtaining a correction value of each channel in the multi-channel switch box by using the 1 st measurement value; performing an ith antenna test on a transmitting antenna and a receiving antenna to obtain an ith measurement value of each channel in the multi-channel switch box, wherein i is more than or equal to 2; and calibrating the ith measured value of each channel by using the corrected value of each channel to obtain the calibration value of each channel in the multi-channel switch box during the ith antenna test. The calibration method provided by the application can bring the real test environment into the calibration range, and realize the correction of the difference between the channels in the multi-channel switch box in the open-loop state, so that the calibration value of each channel in the multi-channel switch box during the antenna test is obtained.
Description
Technical Field
The present disclosure relates to the field of antenna calibration technologies, and in particular, to a calibration method and apparatus for antenna test, an electronic device, and a storage medium.
Background
The multi-channel test is an important test content in the antenna test, and can realize the simultaneous test of a plurality of antennas or the test capability of a multi-channel antenna. In multi-channel antenna testing, calibration of the differences between the channels is one of the important requirements.
In the prior art, a signal source is directly connected to an input end of a multi-channel switch box through a radio frequency cable, and then an output end of the multi-channel switch box is connected to a receiver through the radio frequency cable for testing, so that calibration data is obtained.
Therefore, there is a need for a calibration method, apparatus, electronic device and storage medium for antenna test to solve the above problems.
Disclosure of Invention
The application provides a calibration method and device for antenna test, electronic equipment and a storage medium, which can bring a real test environment into a calibration range, and correct the difference between channels in a multi-channel switch box in an open-loop state, so as to obtain the calibration value of each channel in the multi-channel switch box during antenna test.
In a first aspect, an embodiment of the present application provides a calibration method for an antenna test, where the method is applied to an antenna test system, where the antenna test system includes: the multi-channel switch box comprises a transmitting antenna, a receiving antenna, a multi-channel switch box and transceiving control equipment, wherein one of the transmitting antenna and the receiving antenna is connected with a first end of the multi-channel switch box, the other one of the transmitting antenna and the receiving antenna is connected with the transceiving control equipment, and a second end of the multi-channel switch box is connected with the transceiving control equipment; the calibration method comprises the following steps:
performing antenna test for the 1 st time on the transmitting antenna and the receiving antenna to obtain the 1 st measured value of each channel in the multi-channel switch box;
obtaining a correction value of each channel in the multi-channel switch box by using the 1 st measurement value;
performing an ith antenna test on the transmitting antenna and the receiving antenna to obtain an ith measured value of each channel in the multi-channel switch box, wherein i is greater than or equal to 2;
and calibrating the ith measured value of each channel by using the obtained correction value of each channel in the multi-channel switch box to obtain the calibration value of each channel in the multi-channel switch box during the ith antenna test.
In one possible design, the performing a 1 st antenna test on the transmitting antenna and the receiving antenna to obtain a 1 st measurement value of each channel in the multi-channel switch box includes:
maintaining parameters of the transmitting antenna, the receiving antenna and the transceiving control device unchanged;
and connecting one of the transmitting antenna and the receiving antenna with each channel in the multi-channel switch box respectively, and sequentially measuring the 1 st measured value of each channel in the multi-channel switch box.
In one possible design, the obtaining the corrected value of each channel in the multi-channel switch box by using the 1 st measurement value includes:
taking the 1 st measured value of one channel in the multi-channel switch box as a reference value;
and respectively subtracting the 1 st measured value of other channels in the multi-channel switch box from the reference value to obtain the corrected value of each channel in the multi-channel switch box.
In one possible design, the performing an ith antenna test on the transmitting antenna and the receiving antenna to obtain an ith measurement value of each channel in the multi-channel switch box includes:
setting parameters of the transmitting antenna, the receiving antenna and the transceiving control equipment;
connecting one of the transmitting antenna and the receiving antenna with each channel in the multi-channel switch box, and measuring the ith measurement value of each channel in the multi-channel switch box.
In a possible design, the calibrating the measured value of each channel in the multi-channel switch box by using the obtained calibration value of each channel to obtain the calibration value of each channel in the multi-channel switch box at the ith antenna test includes:
and respectively subtracting the ith measured value of each channel in the multi-channel switch box from the corrected value of the corresponding channel to obtain the calibrated value of each channel in the multi-channel switch box during the ith antenna test.
In a second aspect, an embodiment of the present application provides a calibration apparatus for antenna test, including:
the first test module is used for carrying out the 1 st antenna test on the transmitting antenna and the receiving antenna to obtain the 1 st measurement value of each channel in the multi-channel switch box;
the correction module is used for obtaining the correction value of each channel in the multi-channel switch box by using the 1 st measurement value;
the second testing module is used for carrying out ith antenna test on the transmitting antenna and the receiving antenna to obtain ith measured values of all channels in the multi-channel switch box, wherein i is more than or equal to 2;
and the calibration module is used for calibrating the ith measured value of each channel by using the obtained correction value of each channel in the multi-channel switch box to obtain the calibration value of each channel in the multi-channel switch box during the ith antenna test.
In one possible design, the obtaining the corrected value of each channel in the multi-channel switch box by using the 1 st measurement value includes:
maintaining parameters of the transmitting antenna, the receiving antenna and the transceiving control device unchanged;
and connecting one of the transmitting antenna and the receiving antenna with each channel in the multi-channel switch box respectively, and sequentially measuring the 1 st measured value of each channel in the multi-channel switch box.
Taking the 1 st measured value of one channel in the multi-channel switch box as a reference value;
and respectively subtracting the 1 st measured value of other channels in the multi-channel switch box from the reference value to obtain the corrected value of each channel in the multi-channel switch box.
In a possible design, the calibrating the measured value of each channel in the multi-channel switch box by using the obtained calibration value of each channel to obtain the calibration value of each channel in the multi-channel switch box at the ith antenna test includes:
setting parameters of the transmitting antenna, the receiving antenna and the transceiving control equipment;
connecting one of the transmitting antenna and the receiving antenna with each channel in the multi-channel switch box, and measuring the ith measurement value of each channel in the multi-channel switch box.
And respectively subtracting the ith measured value of each channel in the multi-channel switch box from the corrected value of the corresponding channel to obtain the calibrated value of each channel in the multi-channel switch box during the ith antenna test.
In a third aspect, an embodiment of the present invention further provides a computing device, including a memory and a processor, where the memory stores a computer program, and the processor, when executing the computer program, implements the method described in any one of the above.
In a fourth aspect, the present invention further provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed in a computer, the computer program causes the computer to execute any one of the methods described above.
The embodiment provides a calibration method and device for antenna test, electronic equipment and a storage medium, which are applied to an antenna test system. The calibration method comprises the steps of firstly carrying out the 1 st antenna test on a transmitting antenna and a receiving antenna to obtain the 1 st measured value of each channel in a multi-channel switch box; obtaining a correction value of each channel in the multi-channel switch box by using the 1 st measurement value; performing an ith antenna test on a transmitting antenna and a receiving antenna to obtain an ith measurement value of each channel in the multi-channel switch box, wherein i is more than or equal to 2; and calibrating the ith measured value of each channel by using the obtained correction value of each channel in the multi-channel switch box to obtain the calibration value of each channel in the multi-channel switch box during the ith antenna test.
Therefore, the calibration method provided by the application can bring the real test environment into the calibration range, and correct the difference between the channels in the multi-channel switch box in the open-loop state, so that the calibration value of each channel in the multi-channel switch box during the antenna test is obtained.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic diagram of a calibration method for antenna test according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an antenna test system in which a multi-channel switch box is connected to a transmitting terminal of a transmitting antenna and transceiving control equipment according to an embodiment of the present invention;
fig. 3 is a schematic diagram of an antenna testing system in which a multi-channel switch box is connected to a receiving end of a receiving antenna and a transceiving control device according to an embodiment of the present invention;
FIG. 4 is a diagram of a hardware architecture of a computing device according to an embodiment of the present invention;
fig. 5 is a structural diagram of an antenna test calibration apparatus according to an embodiment of the present invention.
Detailed Description
The present application will be described in detail below with reference to the drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of and not restrictive on the broad application.
In the description of the embodiments of the present application, the terms "first", "second", and the like, unless expressly specified or limited otherwise, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless specified or indicated otherwise; the terms "connected," "fixed," and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, integrally connected, or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In the description of the present application, it should be understood that the terms "upper" and "lower" used in the description of the embodiments of the present application are used in a descriptive sense only and not for purposes of limitation. In addition, in this context, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on "or" under "the other element or be indirectly on" or "under" the other element via an intermediate element.
When a multi-channel switch box is used for testing an antenna, the difference between channels needs to be calibrated. In the prior art, a signal source is directly connected to an input end of a multi-channel switch box through a radio frequency cable, and then an output end of the multi-channel switch box is connected to a receiver through the radio frequency cable for testing, so as to obtain calibration data, but the method does not consider the influence of a testing environment.
In order to solve the technical problem, a mode that a multi-channel switch box is connected to an actual test system, a test signal is transmitted through a transmitting antenna, and a test signal is received through a receiving antenna can be considered, so that the difference between channels in the multi-channel switch box is corrected in an open-loop state, and the calibration value of each channel in the multi-channel switch box during antenna test can be obtained.
As shown in fig. 1, an embodiment of the present invention provides a calibration method for antenna test, which is applied to an antenna test system.
The antenna test system includes: the multi-channel switch box comprises a transmitting antenna, a receiving antenna, a multi-channel switch box and transceiving control equipment, wherein one of the transmitting antenna and the receiving antenna is connected with a first end of the multi-channel switch box, the other one of the transmitting antenna and the receiving antenna is connected with the transceiving control equipment, and a second end of the multi-channel switch box is connected with the transceiving control equipment;
the method comprises the following steps:
step 100: carrying out the 1 st antenna test on a transmitting antenna and a receiving antenna to obtain the 1 st measured value of each channel in the multi-channel switch box;
step 102: obtaining a correction value of each channel in the multi-channel switch box by using the 1 st measurement value;
step 104: performing an ith antenna test on a transmitting antenna and a receiving antenna to obtain an ith measured value of each channel in the multi-channel switch box; wherein i is greater than or equal to 2;
step 106: and calibrating the ith measured value of each channel by using the obtained correction value of each channel in the multi-channel switch box to obtain the calibration value of each channel in the multi-channel switch box during the ith antenna test.
In the embodiment of the invention, the 1 st antenna test is firstly carried out on the transmitting antenna and the receiving antenna to obtain the 1 st measured value of each channel in the multi-channel switch box; obtaining a correction value of each channel in the multi-channel switch box by using the 1 st measurement value; performing an ith antenna test on a transmitting antenna and a receiving antenna to obtain an ith measurement value of each channel in the multi-channel switch box, wherein i is more than or equal to 2; and calibrating the ith measured value of each channel by using the obtained correction value of each channel in the multi-channel switch box to obtain the calibration value of each channel in the multi-channel switch box during the ith antenna test.
The calibration method provided by the application can bring the real test environment into the calibration range, and realize the correction of the difference between the channels in the multi-channel switch box in the open-loop state, so that the calibration value of each channel in the multi-channel switch box during the antenna test is obtained.
It should be noted that the position of the multi-channel switch box in the antenna test system mainly depends on the performance of the antenna test system. As shown in fig. 2, a first end of the multi-channel switch box may be connected to the transmitting antenna, and a second end of the multi-channel switch box may be connected to the transmitting end of the transceiving control device; as shown in fig. 3, a first end of the multi-channel switch box may be connected to the receiving antenna, and a second end of the multi-channel switch box may be connected to a receiving end of the transceiver control device. The calibration method for the antenna test is suitable for any connection mode of the antenna test system, and can obtain a good calibration effect.
The implementation of each step is described below.
With respect to step 100, in some embodiments, comprises:
maintaining the parameters of the transmitting antenna, the receiving antenna and the transceiving control equipment unchanged;
one of the transmitting antenna and the receiving antenna is respectively connected with each channel in the multi-channel switch box, and the 1 st measured value of each channel in the multi-channel switch box is measured in sequence.
In this embodiment, parameters of the transmitting antenna, the receiving antenna and the transceiving control device are maintained unchanged, one channel in one multi-channel switch box is switched on each time, antenna tests of all channels are completed in sequence, and the 1 st measurement value of each channel is obtained. The testing process only takes each channel in the multi-channel switch box as a variable, so that the deviation between the 1 st measured values measured by each channel is ensured to be caused by the difference between the channels.
It should be noted that, the present application does not specifically limit the specific parameters of the transmitting antenna, the receiving antenna, and the transceiving control device, as long as it is ensured that the parameters of each device in the test system are consistent when the antenna test is performed on any channel in the multi-channel switch box.
With respect to step 102, in some embodiments, comprises:
taking the 1 st measured value of one channel in the multi-channel switch box as a reference value;
and (3) respectively subtracting the 1 st measured values of other channels in the multi-channel switch box from the reference value to obtain the corrected value of each channel in the multi-channel switch box.
In this embodiment, the 1 st measurement value of any one channel in the multi-channel switch box may be used as a reference value, and the 1 st measurement values of other channels are different from the reference value, so that the obtained correction value of each channel is the error caused by each channel.
With respect to step 104, in some embodiments, comprises:
setting parameters of a transmitting antenna, a receiving antenna and a transmitting-receiving control device;
one of the transmitting antenna and the receiving antenna is connected with each channel in the multi-channel switch box, and the ith measurement value of each channel in the multi-channel switch box is measured.
In this embodiment, parameters of each device in the antenna test system may be set according to user needs, when performing actual tests, system parameters corresponding to each channel in the multi-channel switch box may be inconsistent, and a user may select multiple channels to perform antenna tests simultaneously, or may select individual or batch antenna tests to obtain the ith measurement value of each channel in the multi-channel switch box. According to the embodiment, the adaptability, the rapidness and the flexibility of the antenna test system are greatly improved by randomly setting the parameters of each device in the antenna test system and selecting the test channel.
With respect to step 106, in some embodiments, comprises:
and (4) respectively subtracting the ith measured value of each channel in the multi-channel switch box from the corrected value of the corresponding channel to obtain the calibrated value of each channel in the multi-channel switch box during the ith antenna test.
In this embodiment, the i-th measurement of each channel is calibrated using the correction value, which can eliminate measurement errors caused by differences between channels,
the calibration method of the present application will be described below by taking a 4-channel switch box as an example.
As shown in fig. 2 or fig. 3, the antenna test system is a 4-channel test system, the frequency range of the test system is 2 to 18GHz, and the sampling point is set to 801.
The antenna test calibration comprises the following specific steps:
step S1: correctly connecting each device in the antenna test system, and starting up and preheating;
step S2: connecting the 1 channel in the 4-channel switch box into the test system for antenna test to obtain the 1 st measured value M of the 1 channel test system1Keeping the parameters of each device of the test system unchanged, disconnecting the channel 1, sequentially connecting the channel 2, the channel 3 and the channel 4 to the test system, and respectively obtaining the measured value M of the channel 1 of the test system, the channel 3 and the channel 42、M3And M4。
Step S3: testing the 1 st measured value M of the system by using the 1 channel1As a reference value, the 1 st measurement value M of 1-4 paths in a 4-channel switch box is then used1～M4Are respectively connected with M1Making a difference to obtain a corrected value C of 1-4 paths1～C4(ii) a Wherein the content of the first and second substances,
correction value of 1 channel is C1＝0；
Correction value of 2-way is C2＝M2-M1；
Correction value of 3-way is C3＝M3-M1；
Correction value of 4-way is C4＝M4-M1；
Step S4: resetting parameters of each device in the antenna test system according to the user requirements;
step S5: accessing 1-4 paths in a 4-channel switch box into an antenna test system, starting an ith test, and respectively obtaining an ith measured value M of the 1-4 path test system1i～M4i。
Step S6: ith measurement value M of 1-4 channel test system1i～M4iCarrying out calibration, namely carrying out the ith measurement value M of 1-4 channels1i～M4iCorrection values C for respective channels1～C4Making a difference to obtain a calibration value Y of the 1-4 channels in the ith antenna test1～Y4(ii) a Wherein the content of the first and second substances,
calibration value of 1 pass is Y1＝M1i；
Calibration value of 2-way is Y2＝M2i-C2；
Calibration value of Y for 3-way3＝M3i-C3；
Calibration value of 4-way is Y4＝M4i-C4；
This embodiment enables a true test result to a 4-way test system by correcting each way in a 4-way switchbox and correcting any one measurement data using the correction value.
The calibration method is suitable for calibrating the multi-channel switch box under the real test condition, and particularly is suitable for a multi-channel calibration system for testing the antenna under the real test condition.
As shown in fig. 4 and 5, an embodiment of the present invention provides a calibration apparatus for antenna test. The apparatus embodiments may be implemented by software, or by hardware, or by a combination of hardware and software. From a hardware aspect, as shown in fig. 4, for a hardware architecture diagram of a computing device in which a calibration apparatus for antenna test provided in an embodiment of the present invention is located, in addition to the processor, the memory, the network interface, and the nonvolatile memory shown in fig. 4, the computing device in which the apparatus is located in the embodiment may also generally include other hardware, such as a forwarding chip responsible for processing a message, and the like. Taking a software implementation as an example, as shown in fig. 5, as a logical means, the device is formed by reading a corresponding computer program in a non-volatile memory into a memory by a CPU of a computing device where the device is located and running the computer program.
As shown in fig. 4, the calibration apparatus for antenna test provided in this embodiment includes:
the first testing module 300 is configured to perform a 1 st antenna test on the transmitting antenna and the receiving antenna to obtain a 1 st measurement value of each channel in the multi-channel switch box;
a correction module 302, configured to obtain a correction value of each channel in the multi-channel switch box by using the 1 st measurement value;
a second testing module 304, configured to perform an ith antenna test on the transmit antenna and the receive antenna, to obtain an ith measurement value of each channel in the multi-channel switch box, where i is greater than or equal to 2;
and the calibration module 306 is configured to calibrate the ith measurement value of each channel by using the obtained correction value of each channel in the multi-channel switch box, so as to obtain a calibration value of each channel in the multi-channel switch box during the ith antenna test.
In an embodiment of the present invention, the first test module 300 may be configured to perform the step 100 in the above-described method embodiment, the modification module 302 may be configured to perform the step 102 in the above-described method embodiment, the second test module 304 may be configured to perform the step 104 in the above-described method embodiment, and the calibration module 306 may be configured to perform the step 106 in the above-described method embodiment.
In one embodiment of the present invention, when the first test module 300 is executed, the following operations are required to be performed:
maintaining the parameters of the transmitting antenna, the receiving antenna and the transceiving control equipment unchanged;
one of the transmitting antenna and the receiving antenna is respectively connected with each channel in the multi-channel switch box, and the 1 st measured value of each channel in the multi-channel switch box is measured in sequence.
In one embodiment of the present invention, when the modification module 302 is executed, the following operations need to be performed:
taking the 1 st measured value of one channel in the multi-channel switch box as a reference value;
and (3) respectively subtracting the 1 st measured values of other channels in the multi-channel switch box from the reference value to obtain the corrected value of each channel in the multi-channel switch box.
In one embodiment of the present invention, when executing the second testing module 304, the following operations need to be performed:
setting parameters of a transmitting antenna, a receiving antenna and a transmitting-receiving control device;
one of the transmitting antenna and the receiving antenna is connected with each channel in the multi-channel switch box, and the ith measurement value of each channel in the multi-channel switch box is measured.
In one embodiment of the present invention, when the calibration module 306 is executed, the following operations need to be performed:
and (4) respectively subtracting the ith measured value of each channel in the multi-channel switch box from the corrected value of the corresponding channel to obtain the calibrated value of each channel in the multi-channel switch box during the ith antenna test.
It is to be understood that the illustrated structure of the embodiment of the present invention does not constitute a specific limitation to a calibration apparatus for antenna test. In other embodiments of the present invention, a calibration apparatus for antenna testing may include more or fewer components than shown, or some components may be combined, some components may be separated, or a different arrangement of components may be used. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.
Because the content of information interaction, execution process, and the like among the modules in the device is based on the same concept as the method embodiment of the present invention, specific content can be referred to the description in the method embodiment of the present invention, and is not described herein again.
The embodiment of the invention also provides a computing device, which comprises a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the calibration method for the antenna test in any embodiment of the invention is realized.
An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program causes the processor to execute a calibration method for an antenna test in any embodiment of the present invention.
Specifically, a system or an apparatus equipped with a storage medium on which software program codes that implement the functions of any of the above-described embodiments are stored may be provided, and a computer (or CPU or GPU) of the system or the apparatus is caused to read out and execute the program codes stored in the storage medium.
In this case, the program code itself read from the storage medium can realize the functions of any of the above-described embodiments, and thus the program code and the storage medium storing the program code constitute a part of the present invention.
Examples of the storage medium for supplying the program code include a floppy disk, a hard disk, a magneto-optical disk, an optical disk (e.g., CD-ROM, CD-R, CD-RW, DVD-ROM, DVD-RAM, DVD-RW, DVD + RW), a magnetic tape, a nonvolatile memory card, and a ROM. Alternatively, the program code may be downloaded from a server computer via a communications network.
Further, it should be clear that the functions of any one of the above-described embodiments may be implemented not only by executing the program code read out by the computer, but also by causing an operating system or the like operating on the computer to perform a part or all of the actual operations based on instructions of the program code.
Further, it is to be understood that the program code read out from the storage medium is written to a memory provided in an expansion board inserted into the computer or to a memory provided in an expansion module connected to the computer, and then causes a CPU or the like mounted on the expansion board or the expansion module to perform part or all of the actual operations based on instructions of the program code, thereby realizing the functions of any of the above-described embodiments.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an …" does not exclude the presence of other similar elements in a process, method, article, or apparatus that comprises the element.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A calibration method for antenna test is applied to an antenna test system, and the antenna test system comprises: the multi-channel switch box comprises a transmitting antenna, a receiving antenna, a multi-channel switch box and transceiving control equipment, wherein one of the transmitting antenna and the receiving antenna is connected with a first end of the multi-channel switch box, the other one of the transmitting antenna and the receiving antenna is connected with the transceiving control equipment, and a second end of the multi-channel switch box is connected with the transceiving control equipment; the calibration method comprises the following steps:
performing antenna test for the 1 st time on the transmitting antenna and the receiving antenna to obtain the 1 st measured value of each channel in the multi-channel switch box;
obtaining a correction value of each channel in the multi-channel switch box by using the 1 st measurement value;
performing an ith antenna test on the transmitting antenna and the receiving antenna to obtain an ith measurement value of each channel in the multi-channel switch box; wherein i is greater than or equal to 2;
and calibrating the ith measured value of each channel by using the obtained correction value of each channel in the multi-channel switch box to obtain the calibration value of each channel in the multi-channel switch box during the ith antenna test.
2. The calibration method according to claim 1, wherein the performing a 1 st antenna test on the transmitting antenna and the receiving antenna to obtain a 1 st measurement value of each channel in the multi-channel switch box comprises:
maintaining parameters of the transmitting antenna, the receiving antenna and the transceiving control device unchanged;
and connecting one of the transmitting antenna and the receiving antenna with each channel in the multi-channel switch box respectively, and sequentially measuring the 1 st measured value of each channel in the multi-channel switch box.
3. The calibration method according to claim 1, wherein said obtaining correction values for each channel in said multi-channel switch box using said 1 st measurement value comprises:
taking the 1 st measured value of one channel in the multi-channel switch box as a reference value;
and respectively subtracting the 1 st measured value of other channels in the multi-channel switch box from the reference value to obtain the corrected value of each channel in the multi-channel switch box.
4. The calibration method according to claim 1, wherein the performing an i-th antenna test on the transmitting antenna and the receiving antenna to obtain an i-th measurement value of each channel in the multi-channel switch box comprises:
setting parameters of the transmitting antenna, the receiving antenna and the transceiving control equipment;
connecting one of the transmitting antenna and the receiving antenna with each channel in the multi-channel switch box, and measuring the ith measurement value of each channel in the multi-channel switch box.
5. The calibration method according to claim 1, wherein the calibrating the measured values of the channels by using the obtained calibration values of the channels in the multi-channel switch box to obtain the calibration values of the channels in the multi-channel switch box at the ith antenna test comprises:
and respectively subtracting the ith measured value of each channel in the multi-channel switch box from the corrected value of the corresponding channel to obtain the calibrated value of each channel in the multi-channel switch box during the ith antenna test.
6. A calibration device for antenna testing according to claim 1, comprising:
the first test module is used for carrying out the 1 st antenna test on the transmitting antenna and the receiving antenna to obtain the 1 st measurement value of each channel in the multi-channel switch box;
the correction module is used for obtaining the correction value of each channel in the multi-channel switch box by using the 1 st measurement value;
the second testing module is used for carrying out ith antenna test on the transmitting antenna and the receiving antenna to obtain ith measured values of all channels in the multi-channel switch box, wherein i is more than or equal to 2;
and the calibration module is used for calibrating the ith measured value of each channel by using the obtained correction value of each channel in the multi-channel switch box to obtain the calibration value of each channel in the multi-channel switch box during the ith antenna test.
7. The apparatus of claim 6, wherein said obtaining a correction value for each channel in said multi-channel switch box using said 1 st measurement comprises:
maintaining parameters of the transmitting antenna, the receiving antenna and the transceiving control device unchanged;
connecting one of the transmitting antenna and the receiving antenna with each channel in the multi-channel switch box respectively, and measuring the 1 st measured value of each channel in the multi-channel switch box in sequence;
taking the 1 st measured value of one channel in the multi-channel switch box as a reference value;
and respectively subtracting the 1 st measured value of other channels in the multi-channel switch box from the reference value to obtain the corrected value of each channel in the multi-channel switch box.
8. The apparatus of claim 6, wherein the calibrating the measured values of the channels using the obtained calibration values of the channels in the multi-channel switch box to obtain the calibration values of the channels in the multi-channel switch box at the ith antenna test comprises:
setting parameters of the transmitting antenna, the receiving antenna and the transceiving control equipment;
connecting one of the transmitting antenna and the receiving antenna with each channel in the multi-channel switch box, and measuring the ith measurement value of each channel in the multi-channel switch box;
and respectively subtracting the ith measured value of each channel in the multi-channel switch box from the corrected value of the corresponding channel to obtain the calibration value of each channel in the multi-channel switch box during the ith antenna test.
9. A computing device comprising a memory having stored therein a computer program and a processor that, when executing the computer program, implements the method of any of claims 1-5.
10. A computer-readable storage medium, on which a computer program is stored which, when executed in a computer, causes the computer to carry out the method of any one of claims 1-5.
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