CN111817800B - Online monitoring method for downlink amplitude phase of phased array communication equipment - Google Patents
Online monitoring method for downlink amplitude phase of phased array communication equipment Download PDFInfo
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- CN111817800B CN111817800B CN202010537409.2A CN202010537409A CN111817800B CN 111817800 B CN111817800 B CN 111817800B CN 202010537409 A CN202010537409 A CN 202010537409A CN 111817800 B CN111817800 B CN 111817800B
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- H—ELECTRICITY
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- H04B17/309—Measuring or estimating channel quality parameters
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- H04B17/30—Monitoring; Testing of propagation channels
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Abstract
The invention discloses an on-line monitoring method for the amplitude-phase characteristics of an active area array downlink receiving channel of phased array communication equipment, which is characterized in that a single-frequency signal is used as a monitoring signal and added into a communication message format, and a single channel (antenna) is used for carrying out air-interface radiation, so that the basic requirements of the monitoring signal on the signal form and the signal quality are met; when receiving, the frame synchronization time of the communication message is used as a monitoring signal acquisition reference point, so that the sampling requirement of synchronously acquiring monitoring signals by all receiving channels is ensured; and when the receiving power, the receiving signal-to-noise ratio and the relative distance between the receiving party and the receiving party meet the standard of amplitude-phase monitoring, calculating and reporting amplitude and phase errors, and finally finishing the online real-time monitoring of the amplitude-phase characteristics of the active area array downlink receiving channel of the phased array communication equipment.
Description
Technical Field
The invention relates to the field of amplitude and phase monitoring of phased array equipment, in particular to the field of downlink amplitude and phase online monitoring of phased array communication equipment.
Background
Phased array antenna technology is gradually applied to novel communication equipment by virtue of high gain, flexible beam control and extremely strong interference suppression capability.
After the phased array device is deployed, the side lobe level, the gain and the beam pointing direction of a received beam are affected by factors such as time drift and aging of an active component, and antenna installation position offset. These indexes are typical antenna performance characteristic parameters, which cannot be conveniently measured in the application scenario of the phased array device, but the requirements of the indexes can be converted into allowable amplitude and phase errors for each unit. Therefore, in order to detect whether the receiving beam pattern (including side lobe level, gain, beam pointing, etc.) meets the specification requirements, the phased array antenna must perform downlink amplitude phase monitoring.
When the phased array equipment carries out downlink amplitude and phase monitoring, strict requirements are imposed on the type of a monitoring signal, the signal to noise ratio of the monitoring signal and the sampling time. Generally, the monitoring signal is a single frequency signal with a known high signal-to-noise ratio, and all receiving channels of the phased array device must sample the monitoring signal at the same time. Therefore, currently, phased array devices (including phased array communication devices) generally adopt a pre-task amplitude-phase detection method to detect the amplitude phases of all receiving channels of the devices, and cannot perform real-time online monitoring on the downlink amplitude phases during task execution.
Disclosure of Invention
The invention provides a downlink amplitude and phase online monitoring method of phased array communication equipment, which is characterized in that a single-frequency signal is used as a monitoring signal and added into a communication message format, so that the phased array communication equipment can complete downlink amplitude and phase monitoring on line in real time during task execution.
The downlink amplitude-phase online monitoring method for the phased array communication equipment, provided by the invention, has the advantages that a single-frequency signal is used as a monitoring signal and added into a communication message format, and a single channel (antenna) is used for carrying out air-interface radiation, so that the basic requirements of the monitoring signal on the signal form and the signal quality are met; when receiving, the frame synchronization time of the communication message is used as a monitoring signal acquisition reference point, so that the sampling requirement of all receiving channels for synchronously acquiring monitoring signals is ensured; and when the receiving power, the receiving signal-to-noise ratio and the relative distance between the receiving party and the receiving party meet the standard of amplitude-phase monitoring, calculating and reporting amplitude and phase errors, and finally finishing the online real-time monitoring of the amplitude-phase characteristics of the active area array downlink receiving channel of the phased array communication equipment. The specific implementation process is as follows:
the method comprises the following steps: the phased array communication equipment carries out beam forming on the received signals of all channels and demodulates the signals after the beam forming;
step two: carrying out frame synchronization on the demodulated data stream, carrying out message analysis according to a communication air interface message format once the frame synchronization is finished, thereby obtaining a conventional communication message, obtaining the position information of a sender through angle and distance measurement, and simultaneously starting a monitoring signal sampling counter by using a frame synchronization signal;
step three: calculating the relative position of the equipment and the sender according to the received position information, and meanwhile calculating the signal quality of the air interface message of the communication according to the demodulation result;
step four: when the monitoring signal sampling counter is at the monitoring signal sampling moment, collecting the receiving signals of all receiving channels;
step five: calculating amplitude error and phase error between active area array receiving channels according to the collected receiving signals of each channel;
step six: and comprehensively judging the amplitude and phase monitoring result according to the received power, the signal-to-noise ratio and the relative distance information, determining whether the amplitude and phase error calculated this time is effective, if so, reporting the amplitude and phase error, and otherwise, ending the process.
Furthermore, the communication air interface message format in the second step is added with the position information of the sender and the monitoring signal form; the monitoring signal form is a standard signal form of downlink amplitude phase monitoring of the phased array communication equipment, and a single-frequency signal is adopted to carry out air interface radiation through a single transmitting channel; the position information represents the actual position of the sending device and is used for calculating the relative distance and the relative direction between the sending device and the receiving device.
Furthermore, the amplitude monitoring result determination process in the sixth step is as follows:
(1) after the amplitude-phase error is calculated, judging whether the signal-to-noise ratio of the received signal meets the monitoring requirement, if so, performing subsequent processing, otherwise, ending the process;
(2) judging whether the received signal power meets the monitoring requirement, if so, carrying out subsequent processing, otherwise, ending the process;
(3) and judging whether the relative distance meets the monitoring requirement, if so, reporting the amplitude-phase error of the current monitoring, and otherwise, ending the process.
The invention adds the single-frequency signal as the monitoring signal into the communication message format, utilizes the frame synchronization moment of the communication message as the unified collecting reference point of the monitoring signal, and comprehensively judges the effectiveness of the monitoring signal by calculating the receiving power, the receiving signal-to-noise ratio, the relative distance between the receiving party and the sending party and the receiving party and the like, so that the phased array communication equipment can complete the downlink amplitude-phase monitoring during the task execution period, and provides real-time effective data support for the online health management and performance evaluation of the phased array communication equipment.
Drawings
Fig. 1 is a schematic diagram of a communication air interface message.
Fig. 2 is a schematic diagram of a downlink amplitude-phase online monitoring processing flow of the phased array communication device.
Fig. 3 is a schematic flow chart of phase error calculation.
FIG. 4 is a schematic view of a phase monitoring result determination process.
Detailed Description
The invention provides a downlink amplitude phase online real-time monitoring method for phased array communication equipment. Firstly, a single-frequency signal is added into a communication message format as a monitoring signal, and air-interface radiation is carried out through a single channel (antenna), so that the basic requirements of the monitoring signal on the signal form and the signal quality are met. Secondly, the invention uses the frame synchronization time of the communication message as the monitoring signal acquisition reference point, thereby ensuring the sampling requirement of all receiving channels for synchronously acquiring the monitoring signals. And thirdly, comprehensively judging whether the received signals acquired by each receiving channel of the phased array communication equipment meet the amplitude-phase monitoring standard or not according to the received power, the signal-to-noise ratio and the relative distance, wherein the received power and the signal-to-noise ratio are obtained by synchronous calculation of the phased array communication equipment during demodulation and symbol judgment, and the relative distance information is obtained by calculation of position information in the received communication air interface message. And finally, when the monitoring signal acquired by the receiving channel meets the amplitude-phase monitoring standard, calculating and reporting the amplitude and phase errors, and finally finishing the downlink amplitude-phase online monitoring of the phased array communication equipment.
The invention is further explained below with reference to the figures and examples.
The invention provides a special communication air interface message format, and a schematic diagram of the special communication air interface message format is shown in fig. 1. The conventional communication air interface message generally consists of a message header (frame header) and a conventional message, and the communication air interface message provided by the invention is added with position information and monitoring signals. The added monitoring signal is used as a standard signal for downlink amplitude-phase monitoring of the phased array communication equipment, a single-frequency signal is required to be adopted, and air interface radiation is carried out through a single channel (antenna); the hold time of the phase array communication device depends on the modulation/demodulation clock of the phase array communication device, and generally is at least one modulation/demodulation clock. The position information added by the invention represents the actual position of the sending equipment, and generally the data length is 8 bytes; after receiving the position information, the phased array communication device can calculate the relative distance and the relative direction between the phased array communication device and the sending device, wherein the relative distance is used for determining whether the received monitoring signal meets the requirement of the device for downlink amplitude and phase monitoring, and the relative direction is used for calculating the phase difference theoretical value between adjacent channels.
In order to ensure the accuracy of amplitude and phase monitoring of the phased array communication equipment, the invention comprehensively judges whether the received signal acquired at this time meets the standard of amplitude and phase monitoring by taking the received power, the received signal-to-noise ratio and the relative distance between the receiving party and the transmitting party as main conditions. When the receiving signal-to-noise ratio is too small, the quality of the received signal of the phased array communication equipment is poor, and therefore amplitude and phase monitoring processing cannot be carried out; when the receiving power is too large (saturated), the waveform of the signal received by the phased array communication equipment is necessarily distorted, so that amplitude and phase monitoring processing cannot be performed; when the relative distance between the transmitting side and the receiving side is short, the accuracy of the relative azimuth calculated by the phased array communication equipment may have a large error, so that amplitude and phase monitoring processing cannot be performed.
Fig. 2 shows a flow chart of downlink amplitude and phase online monitoring processing of phased array communication equipment, which includes the following specific steps:
(1) in the first step, the phased array communication apparatus performs beamforming on the received signals (IQ signals) of all channels, and demodulates the beamformed signals.
(2) And secondly, carrying out frame synchronization on the demodulated data stream, carrying out message analysis once the frame synchronization is finished so as to obtain a conventional communication message and position information, and starting a monitoring signal sampling counter by using a frame synchronization signal.
(3) And thirdly, calculating the relative position (distance and direction) of the equipment and the sender according to the received position information, and calculating the signal quality (receiving power and signal-to-noise ratio) of the air interface message of the communication according to the demodulation result.
(4) And fourthly, when the monitoring signal sampling counter is the monitoring signal sampling moment, collecting the receiving signals of all the receiving channels.
(5) And fifthly, calculating amplitude error and phase error according to the collected received signals (IQ signals) of each channel. Wherein, the schematic diagram of the phase error calculation flow is shown in fig. 3; firstly, calculating a phase difference theoretical value between adjacent channels according to relative azimuth information so as to obtain a phase difference true value of each channel and a first channel; then, calculating an actual phase value of each channel according to the collected receiving signals of each channel, and performing difference calculation by taking the first channel as a reference so as to obtain a phase difference measurement value of each channel and the first channel; and finally, calculating to obtain the phase error of each channel according to the phase difference measured value and the phase difference true value of each channel and the first channel.
(6) And sixthly, comprehensively determining whether the amplitude-phase error calculated this time is effective or not according to the received power, the signal-to-noise ratio and the relative distance information, if so, reporting the amplitude-phase error of this time, and otherwise, ending the amplitude-phase monitoring process. The schematic diagram of the amplitude and phase monitoring result judging process is shown in fig. 4; firstly, after amplitude and phase errors are calculated, judging whether the signal-to-noise ratio of a received signal meets the monitoring requirement, if so, carrying out subsequent processing, and if not, ending the amplitude and phase monitoring process; then, judging whether the received signal power meets the monitoring requirement, if so, carrying out subsequent processing, and if not, ending the amplitude-phase monitoring process; and finally, judging whether the relative distance meets the monitoring requirement, if so, reporting the amplitude-phase error of the current monitoring, and otherwise, ending the amplitude-phase monitoring process.
Claims (3)
1. A downlink amplitude and phase online monitoring method for phased array communication equipment is characterized by comprising the following steps:
the method comprises the following steps: the phased array communication equipment carries out beam forming on the received signals of all channels and demodulates the signals after the beam forming;
step two: carrying out frame synchronization on the demodulated data stream, carrying out message analysis according to a communication air interface message format once the frame synchronization is finished, thereby obtaining a conventional communication message, obtaining the position information of a sender through angle and distance measurement, and simultaneously starting a monitoring signal sampling counter by using a frame synchronization signal;
step three: calculating the relative position of the equipment and the sender according to the received position information, and calculating the signal quality of the air interface message of the communication according to the demodulation result;
step four: when the monitoring signal sampling counter is at the monitoring signal sampling moment, collecting the receiving signals of all receiving channels;
step five: calculating amplitude error and phase error between active area array receiving channels according to the collected receiving signals of each channel; when phase error calculation is carried out, firstly, a phase difference theoretical value between adjacent channels is calculated according to relative azimuth information, and thus a phase difference true value between each channel and a first channel is obtained; then, calculating an actual phase value of each channel according to the collected receiving signals of each channel, and performing difference calculation by taking the first channel as a reference so as to obtain a phase difference measurement value of each channel and the first channel; finally, calculating according to the phase difference measurement value and the phase difference true value of each channel and the first channel to obtain the phase error of each channel;
step six: and comprehensively judging the amplitude and phase monitoring result according to the received power, the signal-to-noise ratio and the relative distance information, determining whether the amplitude and phase error calculated this time is effective, if so, reporting the amplitude and phase error, and otherwise, ending the process.
2. The method for online monitoring of downlink amplitude and phase of phased array communication equipment according to claim 1, characterized in that: the communication air interface message format in the second step is added with the position information and the monitoring signal of the sender; the monitoring signal form is a standard signal form of downlink amplitude-phase monitoring of the phased array communication equipment, and a single-frequency signal is adopted to carry out air interface radiation through a single transmitting channel; the position information represents the actual position of the transmitting device and is used for calculating the relative distance and the relative direction between the transmitting device and the receiving device.
3. The method for online monitoring of downlink amplitude and phase of phased array communication equipment according to claim 1, characterized in that: the amplitude phase monitoring result judgment process in the sixth step is as follows:
firstly, after the amplitude-phase error is calculated, judging whether the signal-to-noise ratio of a received signal meets the monitoring requirement, if so, carrying out subsequent processing, otherwise, ending the process;
then, judging whether the received signal power meets the monitoring requirement, if so, performing subsequent processing, otherwise, ending the process;
and finally, judging whether the relative distance meets the monitoring requirement, if so, reporting the amplitude-phase error of the current monitoring, and otherwise, ending the process.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4247936A (en) * | 1979-06-06 | 1981-01-27 | Minnesota Mining And Manufacturing Company | Digital communications system with automatic frame synchronization and detector circuitry |
| CN104297738A (en) * | 2014-11-13 | 2015-01-21 | 中国科学院电子学研究所 | Synchronization calibration device and synchronization calibration and error compensation method for multi-channel receiver |
| CN107329125A (en) * | 2017-06-01 | 2017-11-07 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Eliminate short-term burst interference signal from closed loop calibration method |
| CN109952513A (en) * | 2017-09-04 | 2019-06-28 | 华为技术有限公司 | A kind of method and school survey device of the survey of phased array school |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105353229B (en) * | 2015-10-20 | 2018-06-15 | 上海无线电设备研究所 | A kind of phased array amplitude phase error Near-Field Calibration Method based on one-dimensional rotation |
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- 2020-06-12 CN CN202010537409.2A patent/CN111817800B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4247936A (en) * | 1979-06-06 | 1981-01-27 | Minnesota Mining And Manufacturing Company | Digital communications system with automatic frame synchronization and detector circuitry |
| CN104297738A (en) * | 2014-11-13 | 2015-01-21 | 中国科学院电子学研究所 | Synchronization calibration device and synchronization calibration and error compensation method for multi-channel receiver |
| CN107329125A (en) * | 2017-06-01 | 2017-11-07 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Eliminate short-term burst interference signal from closed loop calibration method |
| CN109952513A (en) * | 2017-09-04 | 2019-06-28 | 华为技术有限公司 | A kind of method and school survey device of the survey of phased array school |
Non-Patent Citations (1)
| Title |
|---|
| 16通道声发射同步数据采集中的电路设计;张笑彰等;《中国新通信》;20191220(第24期);第69页 * |
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