CN112804018A - Receiver automatic measurement method based on portable electromagnetic comprehensive test equipment - Google Patents
Receiver automatic measurement method based on portable electromagnetic comprehensive test equipment Download PDFInfo
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Abstract
The invention discloses a receiver automatic measurement method based on portable electromagnetic comprehensive test equipment, and belongs to the technical field of tests. The receiver automatic measurement method based on the portable electromagnetic comprehensive test equipment is combined with the parameter positive and negative relative regulation method, each index measurement item independently designs optimized parameters, and the automatic measurement efficiency and precision can be obviously improved; the automatic measurement process combines an autonomous learning method, key data in the measurement process are recorded into a table and stored in a database, automatic testing is automatically adapted to stored equipment each time, and measurement errors caused by differences among the equipment and measurement failure caused by replacement of the test equipment are reduced.
Description
Technical Field
The invention belongs to the technical field of testing, and particularly relates to a receiver automatic measuring method based on portable electromagnetic comprehensive testing equipment.
Background
The portable electromagnetic signal testing equipment is used as maintenance support equipment of communication tools such as radars, radio stations and the like and comprehensive testing equipment of instruments and meters, and is widely applied to the fields of military and civil use. The system can be used for emergency maintenance and detection of various communication equipment in a command operation system and electronic countermeasure in military, and provides powerful guarantee for operation execution; the method is applied to the aspects of production, detection and the like of enterprise communication equipment in civil use, and plays an important role in improving the production efficiency.
The communication receiver has more and complex measurement indexes and increasing requirements, wherein the automatic measurement of the receiver is an important function of the portable electromagnetic comprehensive detection equipment, and the measurement requirements of the receiver are more and more. People continuously improve and perfect thought in the process of realizing automatic measurement of the communication receiver, and design various different processing modes, thereby solving the problems encountered in the measurement of the performance index of the current receiver to a certain extent. Most of the existing electromagnetic comprehensive test equipment receiver measurement adopts a method of adjusting measurement parameters or fixing an automatic measurement process based on manual configuration.
The existing implementation schemes are as follows:
manual measurement in combination with software measurement
Testing personnel manually set testing equipment parameters and communication receiver parameters; running measurement software to calculate a measurement result through the software; and modifying the parameters of the test equipment again according to the measurement data, calculating the measurement data again through software, and so on until a stable result is measured. The method is more suitable for the test environment of the newly added simple indexes of the receiver.
Automatic measurement of cure measurement flow
A tester designs an automatic measurement process aiming at fixed test equipment and a receiver, issues default setting parameters through automatic measurement software, adjusts the parameters through the software to execute measurement, modifies the parameters to re-measure until the measurement is finished. The traditional fixed stepping method is mostly adopted in the adjusting process. The method is more applicable to the measurement environment of the fixed test equipment and the receiver.
The prior art has the following disadvantages:
the manual measurement combines the disadvantages of the software measurement:
the method needs to continuously and repeatedly adjust the parameters of the test equipment and the communication receiver, and has the advantages of long measurement time, high labor consumption and extremely low efficiency.
Automatic measurement of the curing measurement flow:
the method designs an automatic measurement process and a parameter adjusting method, but fixes test equipment and a communication receiver, and aims at solving the problem that equipment with different characteristics possibly has large measurement result error or even can not measure a correct result.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides the automatic receiver measuring method based on the portable electromagnetic comprehensive testing equipment, which is reasonable in design, overcomes the defects of the prior art and has a good effect.
In order to achieve the purpose, the invention adopts the following technical scheme:
a receiver automatic measurement method based on portable electromagnetic comprehensive test equipment adopts an automatic measurement tool; the method specifically comprises the following steps:
step 1: connecting the test equipment with the tested receiver, and setting parameters of the tested receiver and the test equipment;
step 2: starting an automatic measurement tool, identifying equipment matching with the autonomous learning data list, finding corresponding measurement equipment, and if not, reestablishing an equipment record table; controlling a signal generation module of the portable electromagnetic comprehensive test equipment through an automatic measurement tool, sending an unmodulated single carrier signal at the working frequency of a tested receiver, recording the model of the tested receiver, and automatically recording the model to an autonomous learning data table buffer area;
and step 3: the automatic measuring tool controls an audio analysis module of the portable electromagnetic comprehensive test equipment, measures the signal Nardy S of the receiver under the transmitted signal and records the signal Nardy S to an autonomous learning data table buffer area;
and 4, step 4: the automatic measuring tool controls a signal generating module of the portable electromagnetic comprehensive testing equipment, and the level of an output signal is improved by 3 dB; if the receiver working mode is USB, increasing the frequency of the signal source: coarse adjustment is carried out, 1kHz is taken as stepping, fine adjustment is carried out when the Sinadner is less than or equal to S, fine adjustment is carried out by taking 10Hz or 100Hz as stepping from a frequency point before the Sinadner is less than or equal to S, and after the audio analysis and measurement are stable, an average value of 5 times of measurement is taken until the Sinadner is less than or equal to S;
when the signal rate obtained by audio analysis and measurement is recovered to S, recording the corresponding frequency FR when the signal rate is just greater than S; reducing the frequency of a signal source, finely adjusting by taking 10Hz as a step, and taking an average value of 5 times of measurement until the signal to noise ratio is less than or equal to S after the audio analysis and measurement are stable;
recording the corresponding frequency FL when the signal Nardon is just larger than S; if the working mode of the receiver is LSB, increasing the frequency of a signal source and carrying out step fine adjustment by taking 10Hz, and after the audio analysis and measurement are stable, taking the average value of 5 times of measurement until the Sinard is less than or equal to S;
when the signal rate obtained by audio analysis and measurement is recovered to S, recording the corresponding frequency FR when the signal rate is just greater than S; reducing the frequency of a signal source: coarse adjustment is carried out, 1kHz is taken as stepping, when the signal-to-noise ratio is less than or equal to S, fine adjustment is carried out, 10Hz is taken as stepping fine adjustment from a frequency point before the signal-to-noise ratio is less than or equal to S, after the audio analysis and measurement are stable, an average value of 5 times of measurement is taken until the signal-to-noise ratio is less than or equal to S, and a corresponding frequency FL is recorded when the signal-to-noise ratio is just greater than S;
and 5: the automatic measurement tool automatically records the adjustment sequence, the times of positive and negative conditions, the stepping value and the measurement result during the period to an autonomous learning data table buffer area;
step 6: calculating the frequency difference value delta F as FR-FL which is the bandwidth value of 3dB and is included in a table;
and 7: increasing the level of the signal output by the signal source by 40dB, and repeating the steps 4-6; resulting in a 40dB bandwidth value.
The invention has the following beneficial technical effects:
the invention optimizes each index measurement step, improves the measurement speed, deploys stable measurement interfaces at different positions in the process, improves the measurement precision and effectively solves the problem of measurement failure caused by measurement result fluctuation.
The method for actively learning is used in the automatic performance index measurement process, the method is flexibly suitable for different types of radio stations and radio station measurement equipment, equipment information is actively collected in the measurement process, the parameter adjustment process characteristics are recorded, and the automatic measurement process is gradually optimized.
Drawings
Fig. 1 is a block diagram of a receiver automatic measurement based portable electromagnetic integrated test device.
Fig. 2 is a schematic diagram of a receiver automatic measurement based on a portable electromagnetic integrated test device.
Fig. 3 is a diagram of the action relation of the receiver automatic measuring tool based on the portable electromagnetic comprehensive testing device.
Detailed Description
The invention is described in further detail below with reference to the following figures and detailed description:
as shown in fig. 1, the present invention is applied to automatic measurement of a receiver of a portable electromagnetic integrated test device, and provides an automatic measurement tool for a receiver, in which a method for automatically measuring performance indexes of reference sensitivity, frequency range, spectrum emission template, adjacent channel selectivity, co-channel selectivity, intermodulation suppression, spurious suppression, second-order intermodulation intercept point and third-order intermodulation intercept point is integrated, and a positive-negative relative parameter adjustment method is used in a parameter adjustment process, so that adjustment time is effectively shortened, and accuracy is improved. Meanwhile, according to the characteristics of the test equipment and the receiver, the automatic measurement information is continuously learned and recorded, and the measurement process is optimized.
Principle description, as shown in fig. 2;
the automatic measurement method combines the thought of positive and negative relative adjustment of parameters, each specific measurement item has different using time and adjustment times aiming at the mode, and important parameters such as the current models of the test equipment and the tested equipment, the adjustment process times, frequency, results and the like are recorded while measurement is carried out, and the parameters are used as the basis of autonomous learning and are stored in the MySQL database table.
The automatic measurement procedure takes receiver selective measurements as an example:
1) after the test equipment is connected with the receiver of the tested equipment, the parameters of the tested receiver and the test equipment need to be set;
2) and starting an automatic measuring tool of a receiver of the portable electromagnetic comprehensive testing equipment, identifying the equipment to match with the autonomous learning data list, finding the corresponding measuring equipment, and reestablishing an equipment record table if the equipment record table does not match with the autonomous learning data list. The signal source is controlled by an automatic measuring tool to send an unmodulated single carrier signal on the working frequency of the receiver to be measured, the model of the current equipment is recorded, and software automatically records the model to an autonomous learning data table buffer area;
3) the automatic measuring tool controls the audio analysis module to measure the signal Narder S of the receiver under the transmitting signal and records the signal Narder S into an autonomous learning data table buffer area;
4) the automatic measuring tool controls the signal level output by the signal source to be improved by 3 dB. If the working mode of the receiver is USB, increasing the frequency of a signal source (rough adjustment, 1kHz is taken as stepping, when the signal rate is less than or equal to S, fine adjustment is carried out again, from the frequency point before the signal rate is less than or equal to S, 10Hz is taken as stepping fine adjustment (too small, the fine adjustment is changed into two times, the first stepping is 100Hz, and the second stepping is 10Hz) (after the audio analysis and measurement are stable, the average value of 5 times of measurement is taken until the signal rate is less than or equal to S), and when the signal rate obtained by the audio analysis and measurement is recovered to S, recording the corresponding frequency FR (when the signal rate is just greater than S); reducing the frequency of a signal source (finely adjusting by taking 10Hz as a step (taking an average value of 5 times of measurement after audio analysis and measurement are stable) until the signal rate is less than or equal to S), and recording the corresponding frequency FL when the signal rate is just greater than S; if the working mode of the receiver is LSB, increasing the frequency of a signal source (taking 10Hz as step fine adjustment (taking 5 times of measurement average value after audio analysis and measurement are stable) until the signal rate is less than or equal to S), and recording the frequency FR corresponding to the signal rate (when the signal rate is just greater than S) until the signal rate obtained by the audio analysis and measurement is recovered to S; reducing the frequency of a signal source (rough adjustment, 1kHz is taken as stepping, when the signal rate is less than or equal to S, fine adjustment is carried out, from the frequency point before the signal rate is less than or equal to S, 10Hz is taken as stepping fine adjustment (after the audio analysis and measurement are stable, the average value of 5 times of measurement is taken) until the signal rate is less than or equal to S), and recording the corresponding frequency FL when the signal rate is just greater than S;
5) the automatic measurement tool automatically records the adjustment sequence, the times of positive and negative conditions, the stepping value and the measurement result during the period to an autonomous learning data table buffer area;
6) calculating a frequency difference value delta F as FR-FL by software, namely a 3dB bandwidth value, and recording the frequency difference value delta F as a table;
7) the software improves the level of the signal output by the signal source by 40dB, and repeats the processes 4), 5) and 6) to obtain a 40dB bandwidth value;
description of the operational relationship, as shown in FIG. 3;
after the automatic measuring tool runs, equipment stored in the autonomous learning record table is identified and matched, adjustment is carried out according to the current measuring item and default parameters, the adjustment process adopts a parameter positive and negative adjustment method to carry out continuous measurement, the measuring result is optimized, a tester can forcibly quit the current measuring process midway through a key, and after the adjustment is finished, the automatic measuring tool stops running. And if the measurement task is not finished finally, automatically executing the next task of the current index. And after the automatic measurement is finally stopped, storing the self-learning record table stored in the period to the database. And if the new measurement item exists, the automatic measurement is continuously executed.
The key technical points which bring beneficial effects to the invention are as follows:
the receiver automatic measurement method based on the portable electromagnetic comprehensive test equipment is combined with the parameter positive and negative relative regulation method, and each index measurement item independently designs optimized parameters, so that the automatic measurement efficiency and precision can be obviously improved;
the automatic measurement process combines an autonomous learning method, key data in the measurement process are recorded into a table and stored in a database, automatic testing is automatically adapted to stored equipment each time, and measurement errors caused by differences among the equipment and measurement failure caused by replacement of the test equipment are reduced.
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make modifications, alterations, additions or substitutions within the spirit and scope of the present invention.
Claims (1)
1. A receiver automatic measurement method based on portable electromagnetic comprehensive test equipment is characterized in that: an automatic measuring tool is adopted; the method specifically comprises the following steps:
step 1: connecting the test equipment with the tested receiver, and setting parameters of the tested receiver and the test equipment;
step 2: starting an automatic measurement tool, identifying equipment matching with the autonomous learning data list, finding corresponding measurement equipment, and if not, reestablishing an equipment record table; controlling a signal generation module of the portable electromagnetic comprehensive test equipment through an automatic measurement tool, sending an unmodulated single carrier signal at the working frequency of a tested receiver, recording the model of the tested receiver, and automatically recording the model to an autonomous learning data table buffer area;
and step 3: the automatic measuring tool controls an audio analysis module of the portable electromagnetic comprehensive test equipment, measures the signal Nardy S of the receiver under the transmitted signal and records the signal Nardy S to an autonomous learning data table buffer area;
and 4, step 4: the automatic measuring tool controls a signal generating module of the portable electromagnetic comprehensive testing equipment, and the level of an output signal is improved by 3 dB; if the receiver working mode is USB, increasing the frequency of the signal source: coarse adjustment is carried out, 1kHz is taken as stepping, fine adjustment is carried out when the Sinadner is less than or equal to S, fine adjustment is carried out by taking 10Hz or 100Hz as stepping from a frequency point before the Sinadner is less than or equal to S, and after the audio analysis and measurement are stable, an average value of 5 times of measurement is taken until the Sinadner is less than or equal to S;
when the signal rate obtained by audio analysis and measurement is recovered to S, recording the corresponding frequency FR when the signal rate is just greater than S; reducing the frequency of a signal source, finely adjusting by taking 10Hz as a step, and taking an average value of 5 times of measurement until the signal to noise ratio is less than or equal to S after the audio analysis and measurement are stable;
recording the corresponding frequency FL when the signal Nardon is just larger than S; if the working mode of the receiver is LSB, increasing the frequency of a signal source and carrying out step fine adjustment by taking 10Hz, and after the audio analysis and measurement are stable, taking the average value of 5 times of measurement until the Sinard is less than or equal to S;
when the signal rate obtained by audio analysis and measurement is recovered to S, recording the corresponding frequency FR when the signal rate is just greater than S; reducing the frequency of a signal source: coarse adjustment is carried out, 1kHz is taken as stepping, when the signal-to-noise ratio is less than or equal to S, fine adjustment is carried out, 10Hz is taken as stepping fine adjustment from a frequency point before the signal-to-noise ratio is less than or equal to S, after the audio analysis and measurement are stable, an average value of 5 times of measurement is taken until the signal-to-noise ratio is less than or equal to S, and a corresponding frequency FL is recorded when the signal-to-noise ratio is just greater than S;
and 5: the automatic measurement tool automatically records the adjustment sequence, the times of positive and negative conditions, the stepping value and the measurement result during the period to an autonomous learning data table buffer area;
step 6: calculating the frequency difference value delta F as FR-FL which is the bandwidth value of 3dB and is included in a table;
and 7: increasing the level of the signal output by the signal source by 40dB, and repeating the steps 4-6; resulting in a 40dB bandwidth value.
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Cited By (1)
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| CN113422659A (en) * | 2021-06-03 | 2021-09-21 | 中电科思仪科技股份有限公司 | Rapid measurement device and method for spurious suppression of communication comprehensive test equipment |
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