CN112187378A - Digital multi-beam array transmission multi-channel consistency calibration equipment and method - Google Patents
Digital multi-beam array transmission multi-channel consistency calibration equipment and method Download PDFInfo
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- CN112187378A CN112187378A CN202011136560.1A CN202011136560A CN112187378A CN 112187378 A CN112187378 A CN 112187378A CN 202011136560 A CN202011136560 A CN 202011136560A CN 112187378 A CN112187378 A CN 112187378A
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04B17/00—Monitoring; Testing
- H04B17/10—Monitoring; Testing of transmitters
- H04B17/11—Monitoring; Testing of transmitters for calibration
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/10—Monitoring; Testing of transmitters
- H04B17/11—Monitoring; Testing of transmitters for calibration
- H04B17/12—Monitoring; Testing of transmitters for calibration of transmit antennas, e.g. of the amplitude or phase
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Abstract
The invention relates to a digital multi-beam array transmission multi-channel consistency calibration device and method, belonging to the technical field of signal calibration. The system comprises a transmitting component, an array antenna, a signal distribution network, constant-temperature channel equipment, calibration receiving equipment, a constant-temperature reference source and upper computer software. The device is simple and practical, has stable and reliable technical state, can carry out comprehensive and accurate calibration on the consistency of the digital multi-beam array transmitting multiple channels, and fills the blank in the field. Meanwhile, the invention adopts a constant-temperature reference channel technology, thereby greatly improving the calibration precision of the transmitted signal.
Description
Technical Field
The invention relates to the technical field of signal calibration, in particular to a digital multi-beam array transmission multi-channel consistency calibration device and method.
Background
The consistency of the emitted multi-channel is the premise that the digital multi-beam array system realizes the emission of synthesized beams, and is directly related to the pointing precision of beam synthesis and the stability of system ranging. The digital multi-beam array is a multi-channel system, and terminals, channels, feeders and array elements among different channels cannot be completely consistent, so that delay, phase and amplitude of transmitted signals among different channels are inconsistent. The error of time delay affects the ranging accuracy of the system, and the error of phase and amplitude affects the beam synthesis.
The digital multi-beam array transmission multi-channel consistency calibration equipment can calibrate transmission signals among different channels, so that the time delay, the phase and the amplitude of the transmission signals among different channels are consistent, and the pointing precision of beam synthesis and the ranging precision of a system are improved.
However, at present, such mature products are not available in China, and related products cannot perform comprehensive and accurate calibration on the consistency of the digital multi-beam array transmission multi-channel, so that it is particularly important to build a set of calibration equipment capable of performing comprehensive and accurate calibration on the consistency of the digital multi-beam array transmission multi-channel.
Disclosure of Invention
In view of the above, the present invention provides a digital multi-beam array transmission multi-channel consistency calibration apparatus and method, which is simple, practical, stable and reliable, and the like.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a digital multi-beam array transmission multi-channel consistency calibration device comprises a transmission component, an array antenna, a signal distribution network, a constant temperature channel device, a calibration receiving device, a constant temperature reference source and upper computer software;
the transmitting component is used for generating a plurality of paths of transmitting signals and outputting the signals to the array antenna; the device is also used for sequentially traversing and adjusting the signal characteristic values of the multiple paths of transmitting signals according to the calibration adjustment quantity transmitted by the upper computer software, so that the signal characteristic values of all the transmitting signals are consistent with the signal characteristic value of the reference signal;
the array antenna is used for performing beam forming on the multi-path transmitting signals transmitted by the transmitting assembly, then broadcasting the multi-path transmitting signals to a satellite, simultaneously coupling out multi-path coupling signals and outputting the multi-path coupling signals to a signal distribution network;
the signal distribution network is used for traversing and selecting the multi-path coupling signals transmitted by the array antenna under the control of the upper computer software, and selecting 1 path of coupling signals each time to become calibration signals and outputting the calibration signals to the constant-temperature channel equipment;
the constant temperature reference source is used for generating a reference signal and outputting the reference signal to the constant temperature channel equipment;
the constant-temperature channel equipment is used for carrying out frequency conversion and power adjustment on the input calibration signal and the reference signal and outputting the signals to the calibration receiving equipment;
the calibration receiving equipment is used for carrying out signal processing on the calibration signal and the reference signal transmitted by the constant-temperature channel equipment to obtain signal characteristic values including time delay, phase and amplitude of the calibration signal and the reference signal at the same moment, and outputting the signal characteristic values to upper computer software;
the upper computer software is used for providing a monitoring data display interface and an instruction input interface, monitoring and managing the total station system, simultaneously carrying out difference on the signal characteristic values of the calibration signal and the reference signal transmitted by the calibration receiving equipment to obtain calibration adjustment quantity, and outputting the calibration adjustment quantity to the transmitting assembly; and the signal distribution network is also used for controlling the signal distribution network to carry out multi-path signal switching.
The transmitting assembly comprises a plurality of transmitting modules, and each transmitting module comprises a transmitting terminal, an up-converter and a power amplifier; wherein the content of the first and second substances,
the transmitting terminal is used for generating an intermediate frequency signal and outputting the intermediate frequency signal to the up-converter;
the up-converter is used for filtering and frequency-converting the intermediate-frequency signal transmitted by the transmitting terminal and outputting the intermediate-frequency signal to the power amplifier;
and the power amplifier is used for amplifying the power of the up-conversion signal transmitted by the up-converter and outputting the amplified up-conversion signal to the array antenna.
Wherein the constant temperature reference source and the constant temperature channel device are both placed in a constant temperature cabinet.
A digital multi-beam array emission multi-channel consistency calibration method adopts the above digital multi-beam array emission multi-channel consistency calibration equipment to perform emission multi-channel consistency calibration on a digital multi-beam array, and comprises the following steps:
(1) the transmitting component generates multi-path transmitting signals and outputs the signals to the array antenna, and the array antenna couples and outputs the multi-path coupling signals to the signal distribution network;
(2) the signal distribution network switches the input multi-path coupling signals, and selects 1 path of coupling signals as calibration signals to be output to the constant-temperature channel equipment;
(3) the constant temperature reference source generates a reference signal and outputs the reference signal to constant temperature channel equipment;
(4) the constant-temperature channel equipment performs frequency conversion and power adjustment on the calibration signal and the reference signal and outputs the calibration signal and the reference signal to calibration receiving equipment;
(5) the calibration receiving equipment carries out signal processing on the calibration signal and the reference signal to obtain signal characteristic values including time delay, phase and amplitude of the calibration signal and the reference signal at the same moment, and outputs the signal characteristic values to upper computer software;
(6) the upper computer software makes a difference between the signal characteristic values of the calibration signal and the reference signal to obtain calibration adjustment quantity, and the calibration adjustment quantity is output to the transmitting assembly;
(7) the transmitting component adjusts the signal characteristic value of the corresponding transmitting signal according to the calibration adjustment quantity, so that the signal characteristic value of the transmitting signal is consistent with that of the reference signal;
(8) and (3) traversing and selecting the input multi-path coupling signals by the signal distribution network, and returning to the step (2) until the signal characteristic values of all the transmitting signals are consistent with the signal characteristic value of the reference signal.
Compared with the background technology, the invention has the beneficial effects that:
(1) the invention firstly provides calibration equipment and a calibration method capable of comprehensively and accurately calibrating the consistency of the digital multi-beam array emission multi-channel, and fills the blank of the field;
(2) the constant temperature reference source and the constant temperature channel equipment are both arranged in the constant temperature cabinet, so that the stability of time delay, phase and amplitude of the reference signal is ensured.
Drawings
Fig. 1 is a block diagram of a digital multi-beam array transmission multi-channel consistency calibration device according to an embodiment of the present invention.
Fig. 2 is a block diagram of a transmitting assembly in an embodiment of the invention.
Fig. 3 is a service flow diagram of digital multi-beam array transmission multi-channel consistency calibration in an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
A digital multi-beam array transmission multi-channel consistency calibration device comprises a transmission component, an array antenna, a signal distribution network, a constant temperature channel device, a calibration receiving device, a constant temperature reference source and upper computer software; wherein:
the transmitting component of the embodiment of the invention comprises 625 transmitting modules, which are used for generating 625 paths of transmitting signals and outputting the signals to an array antenna; the system is also used for sequentially traversing and adjusting the time delay, phase, amplitude and other signal characteristic values of 625 paths of transmitting signals according to the calibration adjustment quantity transmitted by the upper computer software, so that the signal characteristic values of all the transmitting signals are consistent with the signal characteristic value of the reference signal; the array antenna is used for synthesizing 625 paths of transmitting signals transmitted by the transmitting component into beams and then broadcasting the beams to a satellite, and simultaneously coupling and outputting 625 paths of coupling signals and outputting the signals to a signal distribution network; the signal distribution network is used for switching 625 paths of coupling signals transmitted by the array antenna, selecting 1 path of coupling signals to be calibration signals, outputting the calibration signals to constant-temperature channel equipment, and traversing, selecting and outputting the 625 paths of coupling signals under the control of upper computer software; the constant temperature reference source is used for generating a reference signal and outputting the reference signal to the constant temperature channel equipment, and the reference signal is used for comparing with the calibration signal; the constant-temperature channel equipment is used for carrying out frequency conversion and power adjustment on the input calibration signal and the reference signal and outputting the signals to the calibration receiving equipment; the calibration receiving equipment is used for carrying out signal processing on the calibration signal and the reference signal transmitted by the constant-temperature channel equipment to obtain signal characteristic values such as time delay, phase and amplitude of the calibration signal and the reference signal at the same moment, and outputting the signal characteristic values to upper computer software; and the upper computer software is used for providing a monitoring data display interface and an instruction input interface so as to monitor and manage the total station system, and simultaneously, the signal characteristic values of the calibration signal and the reference signal transmitted by the calibration receiving equipment are subtracted to obtain calibration adjustment quantity, and the calibration adjustment quantity is output to the transmitting assembly.
Further, the transmitting assembly comprises 625 transmitting modules, and each transmitting module comprises a transmitting terminal, an up-converter and a power amplifier; wherein the content of the first and second substances,
the transmitting terminal is used for generating an intermediate frequency signal and outputting the intermediate frequency signal to the up-converter; the up-converter is used for filtering and frequency-converting the intermediate-frequency signal transmitted by the transmitting terminal and outputting the intermediate-frequency signal to the power amplifier; and the power amplifier is used for amplifying the power of the up-conversion signal transmitted by the up-converter and outputting the amplified up-conversion signal to the array antenna.
The method for calibrating the transmission multi-channel consistency of the digital multi-beam array adopts the digital multi-beam array transmission multi-channel consistency calibration equipment to calibrate the transmission multi-channel consistency of the digital multi-beam array, and comprises the following steps:
(1) the transmitting component generates 625 paths of transmitting signals and outputs the signals to the array antenna, and the array antenna couples and outputs the 625 paths of coupling signals to the signal distribution network;
(2) the signal distribution network switches the input 625-path coupling signals, and selects 1-path coupling signal as a calibration signal to be output to the constant-temperature channel equipment;
(3) the constant temperature reference source generates a reference signal and outputs the reference signal to constant temperature channel equipment;
(4) the calibration signal and the reference signal are output to the calibration receiving equipment after being subjected to frequency conversion and power adjustment of the constant-temperature channel equipment;
(5) the calibration receiving equipment performs signal processing on the calibration signal and the reference signal to obtain signal characteristic values such as time delay, phase and amplitude of the calibration signal and the reference signal at the same moment, and outputs the signal characteristic values to upper computer software;
(6) the upper computer software makes a difference between the signal characteristic values of the calibration signal and the reference signal to obtain calibration adjustment quantity, and the calibration adjustment quantity is output to the transmitting assembly;
(7) the transmitting component adjusts the signal characteristic value of the transmitting signal to be consistent with the signal characteristic value of the reference signal;
(8) and (3) traversing, selecting and outputting the input 625-path coupling signals by the signal distribution network, and returning to the step (2) until the signal characteristic values of all the transmitting signals are consistent with the signal characteristic value of the reference signal.
Specifically, as shown in fig. 1, a digital multi-beam array transmission multi-channel consistency calibration device is composed of a transmission component, an array antenna, a signal distribution network, a constant temperature channel device, a calibration receiving device, a constant temperature reference source and upper computer software, wherein,
the transmitting component comprises 625 transmitting modules for generating 625 paths of transmitting signals and outputting the signals to the array antenna, wherein each transmitting module comprises a transmitting terminal, an up-converter and a power amplifier; the array antenna is used for synthesizing 625 paths of transmitting signals transmitted by the transmitting component into beams and then broadcasting the beams to a satellite, coupling and outputting 625 paths of coupling signals and outputting the signals to a signal distribution network, and using the 625 paths of coupling signals as a transmitting multi-channel consistency calibration; the signal distribution network is used for switching 625 paths of coupling signals transmitted by the array antenna, selecting 1 path of coupling signals to be calibration signals, outputting the calibration signals to constant-temperature channel equipment, and traversing, selecting and outputting the 625 paths of coupling signals under the control of upper computer software; the constant temperature reference source is used for generating a reference signal and outputting the reference signal to the constant temperature channel equipment, and the reference signal is used for comparing with the calibration signal; the constant-temperature channel equipment is used for carrying out frequency conversion and power adjustment on the input calibration signal and the reference signal and outputting the signals to the calibration receiving equipment; the calibration receiving equipment is used for carrying out signal processing on a calibration signal and a reference signal which are transmitted by the constant-temperature channel equipment to obtain signal characteristic values such as time delay, phase and amplitude of the calibration signal and the reference signal at the same moment, and outputting the signal characteristic values to upper computer software; the upper computer software is used for providing a monitoring data display interface and an instruction input interface so as to monitor and manage the total station system, and meanwhile, the signal characteristic values of the calibration signal and the reference signal transmitted by the calibration receiving equipment are subjected to difference to obtain calibration adjustment quantity, and the calibration adjustment quantity is output to the transmitting assembly; and the transmitting component sequentially traverses and adjusts the time delay, the phase, the amplitude and other signal characteristic values of the 625-path transmitting signals according to the calibration adjustment quantity transmitted by the upper computer software, so that the signal characteristic values of all the transmitting signals are consistent with the signal characteristic value of the reference signal. The constant-temperature reference source and the constant-temperature channel equipment are both arranged in the constant-temperature case, so that the influence of case temperature change on the reference signal is avoided, and the stability of time delay, phase and amplitude of the reference signal is ensured.
Further, as shown in fig. 2, the transmitting assembly includes 625 transmitting modules, each of which includes a transmitting terminal, an up-converter and a power amplifier; wherein the content of the first and second substances,
the transmitting terminal is used for generating an intermediate frequency signal and outputting the intermediate frequency signal to the up-converter; the up-converter is used for filtering and frequency-converting the intermediate-frequency signal transmitted by the transmitting terminal and outputting the intermediate-frequency signal to the power amplifier; the power amplifier is used for amplifying the power of the up-conversion signal transmitted by the up-converter and then outputting the amplified up-conversion signal to the array antenna, and the external interface of each transmitting module comprises an external 10MHz input, an external 1PPS input, a transmitting signal output and a communication interface.
The business flow chart of the digital multi-beam array transmission multi-channel consistency calibration is shown in figure 3. The transmitting component generates 625 paths of transmitting signals under the excitation of external 10MHz and external 1PPS, the transmitting signals are output to the array antenna, the array antenna performs beam-forming on the 625 paths of transmitting signals and then broadcasts the signals to a satellite, and meanwhile 625 paths of coupling signals are coupled out and output to a signal distribution network. The signal distribution network switches the input 625-path coupling signals, and selects 1-path coupling signal as a calibration signal to be output to the constant temperature channel equipment. Meanwhile, the constant temperature reference source also generates a reference signal under the excitation of external 10MHz and external 1PPS and outputs the reference signal to the constant temperature channel equipment. And the calibration signal and the reference signal are output to the calibration receiving equipment after frequency conversion and power adjustment of the constant-temperature channel equipment. The calibration receiving equipment carries out signal processing on the calibration signal and the reference signal to obtain signal characteristic values such as time delay, phase and amplitude of the calibration signal and the reference signal at the same time, the signal characteristic values are output to upper computer software, signal processing circuits of the calibration signal and the reference signal of the calibration receiving equipment are equal in length, an embedded signal processing program is multiplexed by the same module, and the difference of the calibration signal and the reference signal caused by the factors of hardware and software of the calibration receiving terminal can be reduced to the maximum extent. The upper computer software makes a difference between the signal characteristic values of the calibration signal and the reference signal to obtain calibration adjustment quantity, and the calibration adjustment quantity is output to the transmitting assembly; the transmitting component adjusts the signal characteristic value of the transmitting signal to be consistent with the signal characteristic value of the reference signal; the signal distribution network performs traversal selection output on the input 625-path coupling signals under the control of the upper computer software until the signal characteristic values of all the transmitting signals are consistent with the signal characteristic values of the reference signals.
All the devices of the digital multi-beam array transmission multi-channel consistency calibration device are placed in a machine room and outside the machine room. The transmitting assembly, the signal distribution network, the constant-temperature channel equipment, the calibration receiving equipment, the constant-temperature reference source and the computer provided with the upper computer software are arranged in the machine room, and the array antenna is arranged outside the machine room. The array antenna is connected with the transmitting assembly and the signal distribution network through the radio frequency cable, the constant temperature channel equipment is connected with the signal distribution network, the constant temperature reference source and the calibration receiving equipment through the radio frequency cable, and the computer is connected with other equipment through the network cable. The front panel of the case comprises the indicator light, the power switch, the liquid crystal display and the keyboard, and the case is attractive and reasonable in layout and strong in display and control capacity.
In a word, the invention firstly provides calibration equipment and a calibration method capable of comprehensively and accurately calibrating the consistency of the digital multi-beam array transmission multi-channel, and fills the blank of the field.
Claims (4)
1. A digital multi-beam array transmission multi-channel consistency calibration device is characterized by comprising a transmission component, an array antenna, a signal distribution network, a constant temperature channel device, a calibration receiving device, a constant temperature reference source and upper computer software;
the transmitting component is used for generating a plurality of paths of transmitting signals and outputting the signals to the array antenna; the device is also used for sequentially traversing and adjusting the signal characteristic values of the multiple paths of transmitting signals according to the calibration adjustment quantity transmitted by the upper computer software, so that the signal characteristic values of all the transmitting signals are consistent with the signal characteristic value of the reference signal;
the array antenna is used for performing beam forming on the multi-path transmitting signals transmitted by the transmitting assembly, then broadcasting the multi-path transmitting signals to a satellite, simultaneously coupling out multi-path coupling signals and outputting the multi-path coupling signals to a signal distribution network;
the signal distribution network is used for traversing and selecting the multi-path coupling signals transmitted by the array antenna under the control of the upper computer software, and selecting 1 path of coupling signals each time to become calibration signals and outputting the calibration signals to the constant-temperature channel equipment;
the constant temperature reference source is used for generating a reference signal and outputting the reference signal to the constant temperature channel equipment;
the constant-temperature channel equipment is used for carrying out frequency conversion and power adjustment on the input calibration signal and the reference signal and outputting the signals to the calibration receiving equipment;
the calibration receiving equipment is used for carrying out signal processing on the calibration signal and the reference signal transmitted by the constant-temperature channel equipment to obtain signal characteristic values including time delay, phase and amplitude of the calibration signal and the reference signal at the same moment, and outputting the signal characteristic values to upper computer software;
the upper computer software is used for providing a monitoring data display interface and an instruction input interface, monitoring and managing the total station system, simultaneously carrying out difference on the signal characteristic values of the calibration signal and the reference signal transmitted by the calibration receiving equipment to obtain calibration adjustment quantity, and outputting the calibration adjustment quantity to the transmitting assembly; and the signal distribution network is also used for controlling the signal distribution network to carry out multi-path signal switching.
2. The digital multi-beam array transmit multi-channel uniformity calibration device of claim 1, wherein said transmit assembly comprises a plurality of transmit modules, each transmit module comprising a transmit terminal, an up-converter, and a power amplifier; wherein the content of the first and second substances,
the transmitting terminal is used for generating an intermediate frequency signal and outputting the intermediate frequency signal to the up-converter;
the up-converter is used for filtering and frequency-converting the intermediate-frequency signal transmitted by the transmitting terminal and outputting the intermediate-frequency signal to the power amplifier;
and the power amplifier is used for amplifying the power of the up-conversion signal transmitted by the up-converter and outputting the amplified up-conversion signal to the array antenna.
3. The digital multi-beam array transmit multi-channel uniformity calibration device of claim 1, wherein the constant temperature reference source and the constant temperature channel device are both housed in a constant temperature cabinet.
4. A digital multi-beam array emission multi-channel consistency calibration method is characterized in that: transmit multi-channel consistency calibration of a digital multi-beam array using a digital multi-beam array transmit multi-channel consistency calibration apparatus according to any one of claims 1-3, comprising the steps of:
(1) the transmitting component generates multi-path transmitting signals and outputs the signals to the array antenna, and the array antenna couples and outputs the multi-path coupling signals to the signal distribution network;
(2) the signal distribution network switches the input multi-path coupling signals, and selects 1 path of coupling signals as calibration signals to be output to the constant-temperature channel equipment;
(3) the constant temperature reference source generates a reference signal and outputs the reference signal to constant temperature channel equipment;
(4) the constant-temperature channel equipment performs frequency conversion and power adjustment on the calibration signal and the reference signal and outputs the calibration signal and the reference signal to calibration receiving equipment;
(5) the calibration receiving equipment carries out signal processing on the calibration signal and the reference signal to obtain signal characteristic values including time delay, phase and amplitude of the calibration signal and the reference signal at the same moment, and outputs the signal characteristic values to upper computer software;
(6) the upper computer software makes a difference between the signal characteristic values of the calibration signal and the reference signal to obtain calibration adjustment quantity, and the calibration adjustment quantity is output to the transmitting assembly;
(7) the transmitting component adjusts the signal characteristic value of the corresponding transmitting signal according to the calibration adjustment quantity, so that the signal characteristic value of the transmitting signal is consistent with that of the reference signal;
(8) and (3) traversing and selecting the input multi-path coupling signals by the signal distribution network, and returning to the step (2) until the signal characteristic values of all the transmitting signals are consistent with the signal characteristic value of the reference signal.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114040335A (en) * | 2021-10-21 | 2022-02-11 | 中国电子科技集团公司第五十四研究所 | Calibration signal processing device based on downlink calibration system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114040335A (en) * | 2021-10-21 | 2022-02-11 | 中国电子科技集团公司第五十四研究所 | Calibration signal processing device based on downlink calibration system |
| CN114040335B (en) * | 2021-10-21 | 2023-12-29 | 中国电子科技集团公司第五十四研究所 | Calibration signal processing device based on downlink calibration system |
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