CN216595498U - Radar antenna feeder subsystem performance parameter testing and training system - Google Patents
Radar antenna feeder subsystem performance parameter testing and training system Download PDFInfo
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- CN216595498U CN216595498U CN202123040059.8U CN202123040059U CN216595498U CN 216595498 U CN216595498 U CN 216595498U CN 202123040059 U CN202123040059 U CN 202123040059U CN 216595498 U CN216595498 U CN 216595498U
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Abstract
The utility model provides a performance parameter test training system of a radar antenna feed subsystem, which comprises a program-controlled phase shifter, a receiving and transmitting switch, a signal coupling and parameter adjusting module, a radio frequency feeder network and a high-power absorption load, wherein the program-controlled phase shifter is connected with the receiving and transmitting switch through the radio frequency feeder network; the program-controlled phase shifter is used for adjusting the phase of the transmitting signal; the receiving and transmitting switch is used for realizing the isolation of the receiving and transmitting signals; the signal coupling and parameter adjusting module is used for measuring the power of incident and reflected signals and adjusting the radio frequency network parameters such as impedance and loss; the radio frequency feeder network is used for simulating a radio frequency feeder network of a radar antenna feed subsystem to realize good transmission of radio frequency signals; the high-power absorption load is used for simulating a radar antenna feed subsystem feed source and absorbing signal power output by a radio frequency feed line network. The method can effectively simulate the function composition of a typical radar antenna feed subsystem, provides a corresponding test port and a corresponding test channel for the performance parameter test training of the antenna feed subsystem, and solves the practical difficulty of the performance parameter test training of the radar antenna feed subsystem.
Description
[ technical field ] A method for producing a semiconductor device
The utility model belongs to the technical field of radar performance parameter measurement and simulation training, and particularly relates to a performance parameter test training system of a radar antenna feed subsystem.
[ background of the utility model ]
In the current information era, the weather forecast can better cope with extreme weather in time and accurately, precaution is well done in advance, and the air traffic control with high precision and high efficiency ensures that air travel is safer and more convenient. The information service technologies supporting modern weather forecast, air traffic control and the like are huge radar devices operated in weather stations and air traffic control stations in various regions of the world. The radar equipment becomes an important detection means for acquiring information in modern society, is providing indispensable information service for the modern society and plays an increasingly important role in daily life.
Because each technical index of the radar equipment can change along with the use time, the reduction of the technical index can directly influence the overall detection performance of the radar, and even cause the fault of the radar equipment. Therefore, the main performance parameters of the radar equipment must be measured periodically so as to know the main technical indexes of the radar in time and grasp the technical states of the subsystems of the radar.
In the daily guarantee work of radar equipment, in order to master the technical state of a radar antenna feed subsystem in time, technical support personnel are required to master the test method of performance parameters such as antenna feed/reflected power, standing-wave ratio, insertion loss, phase, circulator isolation, directional coupler coupling degree and the like, and can master the corresponding test work by using an attached instrument of a radar. However, due to the lack of a matching training platform for performance parameter testing, most of the personnel lack of targeted training, so that the measurement method is not firmly mastered and the testing skill is not strong, and the problem of practical testing by using an attached radar instrument is difficult to solve skillfully. Meanwhile, lack of targeted parameter testing training also brings serious potential safety hazards to actual radar testing work.
[ Utility model ] content
The utility model aims to provide a performance parameter test training system of a radar antenna feed subsystem aiming at the actual requirements of performance parameter test training of the radar antenna feed subsystem.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides a performance parameter test training system of a radar antenna feed subsystem, which comprises a program-controlled phase shifter, a receiving and transmitting switch, a signal coupling and parameter adjusting module, a radio frequency feeder network and a high-power absorption load. The program-controlled phase shifter is used for adjusting the phase of a transmitting signal; the receiving and transmitting switch is used for realizing the isolation of the receiving and transmitting signals; the signal coupling and parameter adjusting module is used for measuring the power of incident and reflected signals and adjusting the impedance and loss radio frequency network parameters; the radio frequency feeder network is used for simulating a radio frequency feeder network of a radar antenna feed subsystem to realize good transmission of radio frequency signals; the high-power absorption load is used for simulating a radar antenna feed subsystem feed source and absorbing signal power output by a radio frequency feed line network.
The method can effectively simulate the function composition of a typical radar antenna feed subsystem, provides a corresponding test port and a corresponding test channel for the performance parameter test training of the antenna feed subsystem, and solves the practical difficulty of the performance parameter test training of the radar antenna feed subsystem.
Compared with the prior art, the utility model has the following beneficial effects:
(1) the system is designed according to the function composition of a typical radar antenna feed subsystem and the main signal flow of the system, and has wide performance parameter test contents and complete projects. The system truly simulates the functional composition of a typical radar antenna feed subsystem, completely reflects the transmission flow of radar radio frequency signals, reserves a measurement port on a main link, is used for carrying out measurement training on parameters such as radar antenna feed/reflected power, standing-wave ratio, insertion loss, phase, circulator isolation, directional coupler coupling and the like, and has wide content and complete projects;
(2) by adopting a measuring port design form based on the radar system principle, the basic principle of parameter measurement is better understood, and the method steps are easier to master. The utility model is a semi-physical training platform designed according to the system principle of a typical radar, adopts a test port design based on the radar system principle, prints a radar radio frequency signal flow and a schematic diagram thereof on a hardware platform panel, and directly and clearly marks signals on a reserved measurement port, thereby being beneficial to a trainee to clear the physical meaning of a parameter item, understand the basic principle of parameter measurement, master the measurement method and quickly generate test skills;
(3) the performance parameter test training is carried out by adopting semi-physical simulation, so that the training space is effectively expanded, and the training is safer and more efficient. The utility model is a semi-physical training platform designed according to the full solid system radar, and the system is used for carrying out performance parameter test training, so that on one hand, the test training space can be effectively expanded, the practical difficulty that a plurality of people are few and the radar shelter space is narrow in the actual assembly measurement training is solved, and the training benefit is improved; on the other hand, the part abrasion caused by repeatedly plugging and unplugging the radar interface during the actual installation measurement can be reduced, the safety risk brought by high-power measurement of the radar antenna feed subsystem can be effectively reduced, and the training safety is ensured;
(4) in addition, the system hardware adopts a modular design, thereby greatly reducing the complexity of engineering realization, improving the system reliability and cost performance, and having obvious economic benefit and good popularization and application value. Specifically, on one hand, the abrasion of the radar equipment caused by the traditional test training can be greatly reduced, and the safety of the performance parameter test training is ensured; on the other hand, the contradiction between the long-term duty of the radar equipment and the test training can be effectively solved through batch production, and the training benefit is improved.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below. It is obvious that the drawings described below are only some embodiments of the utility model, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
Fig. 1 is a block diagram of a performance parameter testing and training system of a radar antenna feed subsystem according to an embodiment of the present invention;
FIG. 2 is a schematic block diagram of a performance parameter testing and training system of a radar antenna feed subsystem according to an embodiment of the present invention;
fig. 3 is a schematic view of a measurement port of a performance parameter testing and training system of a radar antenna feed subsystem according to an embodiment of the present invention.
[ detailed description ] embodiments
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other. The utility model will be described in detail below with reference to the figures and examples.
The utility model provides a performance parameter test training system (hereinafter referred to as a test training system) of a radar antenna feed subsystem, which can be used for carrying out test training on main performance parameters of the radar antenna feed subsystem through the test training, effectively solving the practical difficulty of the performance parameter test training of the radar antenna feed subsystem, ensuring the training safety and improving the training benefit.
As shown in fig. 1, the test training system is used for simulating a typical radar antenna feed subsystem, and mainly includes a programmable phase shifter, a transceiver switch, a signal coupling and parameter adjustment module, a radio frequency feeder network, and a high power absorption load, wherein:
the program-controlled phase shifter is used for adjusting the phase of a transmitting signal;
the receiving and transmitting switch is used for realizing the isolation of receiving and transmitting signals;
the signal coupling and parameter adjusting module is used for measuring the power of incident and reflected signals and adjusting the impedance and loss radio frequency network parameters;
the radio frequency feeder network is used for simulating a radio frequency feeder network of a radar antenna feed subsystem to realize good transmission of radio frequency signals;
the high-power absorption load is used for simulating a radar antenna feed subsystem feed source and absorbing signal power output by a radio frequency feed line network.
The following describes each component of the test training system in detail with reference to fig. 1 and 2:
firstly, an antenna feeder radio frequency transmission network is constructed by utilizing components such as a receiving and transmitting switch, a radio frequency feeder network, a high-power absorption load and the like. And then, adjusting the phase of the antenna feeder radio frequency transmission network by using the program-controlled phase shifter, and adjusting the loss of the antenna feeder radio frequency transmission network by using the program-controlled attenuator, thereby obtaining the phase change and loss change environment required by the test training of the antenna feeder transmission parameters. And then, the impedance selection of the radio frequency transmission network is realized by utilizing the program-controlled impedance adjusting switch, so that an impedance change environment required by the test training of the antenna feed reflection parameters is obtained. And finally, extracting a forward coupling signal and a backward coupling signal on the antenna feeder radio frequency transmission network through the directional coupler, and leading the signals to a platform panel to be used as a test port for carrying out performance parameter test training of the antenna feeder subsystem.
The method comprises the following concrete steps:
(1) and constructing a radio frequency signal transmission channel according to a typical radar antenna feed subsystem composition structure.
The radio frequency signal transmission path is constructed around the signal flow of "transmitting signal → phase control → transceiving isolation → signal coupling → signal transmission", and the schematic block diagram is shown in fig. 2. In the figure, the main functions of each functional module are as follows:
program-controlled phase shifter: phase adjustment for the transmit signal;
② a circulator: the device is used for simulating a radar-mounted receiving and transmitting switch to realize the isolation of received and transmitted signals;
③ Bi directional coupler': for incident and reflected signal power measurement;
fourthly, the impedance adjusting switch: the method is used for adjusting impedance parameters of the antenna feed subsystem;
"program controlled attenuator": the method is used for adjusting the transmission loss parameters of the antenna feed subsystem;
sixthly, a downlink main feeder line: the system is used for simulating an uplink main feeder of a radar antenna feeder subsystem to realize downlink transmission of radio frequency signals;
seventhly, a rotating hinge: the system is used for simulating a rotating hinge of a radar antenna feed subsystem to realize good transmission of radio frequency signals in a rotating state;
and the uplink main feeder line: the system is used for simulating an uplink main feeder of the radar antenna feed subsystem to realize the uplink transmission of radio frequency signals;
ninthly, an amplitude limiter for limiting the signal leaked to the port 3 of the circulator;
"medium power absorbing load", "high power absorbing load" in r: the middle power absorption load is used for absorbing signal power leaked and reflected to the port of the circulator 4; the high-power absorption load is used for simulating a radar antenna feed subsystem feed source and absorbing signal power output by a radio frequency feed line network.
Further, as shown in fig. 1 and 2, the transceiver switch includes a circulator, a limiter, and an intermediate power load, which are connected in sequence, wherein:
the circulator is used for realizing the isolation of the transmitting and receiving signals and ensuring the directional transmission of the signals;
the amplitude limiter is used for limiting the signal leaked to the port 3 of the circulator;
the medium power load is used for absorbing signal power leaked and reflected to the port of the circulator 4.
Further, as shown in fig. 1 and 2, the signal coupling and parameter adjusting module includes a dual directional coupler, an impedance adjusting switch, and a programmable attenuator, which are connected in sequence, wherein:
the dual directional coupler is used for realizing power measurement of incident and reflected signals of the feeder line;
the impedance adjusting switch is used for adjusting impedance parameters of the feeder line;
and the program-controlled attenuator is used for realizing the adjustment of the transmission loss parameters of the feeder line.
Further, as shown in fig. 1 and 2, the radio frequency feeder network includes a downlink main feeder, a rotating hinge, and an uplink main feeder, which are connected in sequence, wherein:
the downlink main feeder is used for simulating an uplink main feeder of the radar antenna feeder subsystem to realize downlink transmission of radio frequency signals;
the rotating hinge is used for simulating the rotating hinge of the radar antenna feed subsystem to realize good transmission of radio frequency signals in a rotating state;
and the uplink main feeder is used for simulating the uplink main feeder of the radar antenna feed subsystem to realize the uplink transmission of radio frequency signals.
(2) And determining an antenna feeder performance parameter test item according to the test requirements of the typical radar antenna feeder subsystem.
According to the performance test requirements of a typical radar antenna feed subsystem, the performance parameter test items of the antenna feed are determined by combining the guarantee test requirements of radar equipment, and specifically comprise parameters such as antenna feed/reflected power, standing-wave ratio, insertion loss, phase, circulator isolation, directional coupler coupling degree and the like.
(3) And a signal coupling technology is adopted to lead the test signal of the antenna feed signal generating channel to the platform panel.
And reserving a corresponding test port on a radio frequency signal transmission path according to the determined antenna feeder performance parameter test items, and leading the test port to a platform panel through a directional coupler. The schematic diagram of the measurement port of the antenna feeder performance parameter test training hardware platform is shown in fig. 3. The testing of parameters such as antenna feed-in/reflection power, standing wave ratio, insertion loss, phase, circulator isolation, directional coupler coupling degree and the like can be completed through the ports. In the figure, the ports outside the dotted line frame are signal ports reserved for conducting the test. The concrete description is as follows:
-XS 01': the transmitting signal input end is connected with the output port of the radio frequency source of the measuring instrument;
② XS 02': the circulator output end is connected with the input end of the dual directional coupler through a through cable when a radio frequency signal transmission channel is constructed;
③ XS03 and XS 04': the signal power measuring circuit comprises an echo signal output end and a circulator absorption end, wherein XS03 is used for measuring an output signal of a limiter, and XS04 is connected with a middle power absorption load and used for absorbing signal power leaked and reflected to a port 4 of the circulator;
(iv) "XS 05", "XS 08": the input end and the output end of the double directional coupler are respectively;
"XS 06", "XS 07": the directional coupler is used for measuring the power of incident and reflected signals;
sixthly, XS 09: the input end of the impedance adjusting switch is connected with the output end of the double-directional coupler through a through cable when a radio-frequency signal transmission channel is constructed;
seventhly 'XS 10': the output end of the program-controlled attenuator is connected with the input end of a radio frequency feeder network through a through cable when a radio frequency signal transmission channel is constructed;
-XS 11 and XS 12: the input end and the output end of the radio frequency feeder network are respectively, wherein the XS12 is connected with a high-power absorption load and used for absorbing signal power output by the radio frequency feeder network.
In the test training system provided by the embodiment of the utility model, a hardware system integrates structures such as a program-controlled phase shifter, a transceiving switch, a signal coupling and parameter adjustment module, a radio frequency feeder network, a high-power absorption load and the like, so that the functional composition of a typical radar antenna feed subsystem can be effectively simulated, a corresponding test port and a test channel are provided for the test training of performance parameters of the antenna feed subsystem, and the practical difficulty of the test training of the performance parameters of the radar antenna feed subsystem is solved.
It should be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the utility model, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (4)
1. A performance parameter testing and training system for a radar antenna feed subsystem is characterized by comprising a program-controlled phase shifter, a receiving and transmitting switch, a signal coupling and parameter adjusting module, a radio frequency feeder network and a high-power absorption load, wherein:
the program-controlled phase shifter is used for adjusting the phase of a transmitting signal;
the receiving and transmitting switch is used for realizing the isolation of the receiving and transmitting signals;
the signal coupling and parameter adjusting module is used for measuring the power of incident and reflected signals and adjusting the impedance and loss radio frequency network parameters;
the radio frequency feeder network is used for simulating a radio frequency feeder network of a radar antenna feed subsystem to realize good transmission of radio frequency signals;
the high-power absorption load is used for simulating a radar antenna feed subsystem feed source and absorbing signal power output by a radio frequency feed line network.
2. The radar antenna feed subsystem performance parameter testing and training system of claim 1, wherein the transceiver switch comprises a circulator, a limiter, and a medium power load, wherein:
the circulator is used for realizing the isolation of the transmitting and receiving signals and ensuring the directional transmission of the signals;
the amplitude limiter is used for limiting the signal leaked to the third port of the circulator;
and the medium power load is used for absorbing the signal power leaked and reflected to the fourth port of the circulator.
3. The radar antenna feed subsystem performance parameter testing and training system of claim 1, wherein the signal coupling and parameter adjusting module comprises a bi-directional coupler, an impedance adjusting switch, and a programmable attenuator connected in sequence, wherein:
the dual directional coupler is used for realizing power measurement of incident and reflected signals of the feeder line;
the impedance adjusting switch is used for adjusting impedance parameters of the feeder line;
and the program-controlled attenuator is used for realizing the adjustment of the transmission loss parameters of the feeder line.
4. The radar antenna feed subsystem performance parameter testing and training system of claim 1, wherein the radio frequency feeder network comprises a downlink main feeder, a rotating hinge, and an uplink main feeder connected in sequence, wherein:
the downlink main feeder is used for simulating a downlink main feeder of the radar antenna feed subsystem to realize downlink transmission of radio frequency signals;
the rotating hinge is used for simulating a rotating hinge of a radar antenna feed subsystem to realize good transmission of radio frequency signals in a rotating state;
and the uplink main feeder is used for simulating the uplink main feeder of the radar antenna feed subsystem to realize the uplink transmission of radio frequency signals.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202123040059.8U CN216595498U (en) | 2021-12-03 | 2021-12-03 | Radar antenna feeder subsystem performance parameter testing and training system |
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| CN202123040059.8U CN216595498U (en) | 2021-12-03 | 2021-12-03 | Radar antenna feeder subsystem performance parameter testing and training system |
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| CN216595498U true CN216595498U (en) | 2022-05-24 |
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