CN105842673B - A kind of the Subarray number T/R component signals conditioning device and method isolated based on transmitting-receiving - Google Patents
A kind of the Subarray number T/R component signals conditioning device and method isolated based on transmitting-receiving Download PDFInfo
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- CN105842673B CN105842673B CN201610368877.5A CN201610368877A CN105842673B CN 105842673 B CN105842673 B CN 105842673B CN 201610368877 A CN201610368877 A CN 201610368877A CN 105842673 B CN105842673 B CN 105842673B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/40—Means for monitoring or calibrating
- G01S7/4004—Means for monitoring or calibrating of parts of a radar system
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Abstract
The invention proposes a kind of Subarray number T/R component signals conditioning devices isolated based on transmitting-receiving, when transmitting test, every 1 number T/R component connects 1 level-one switching network, and TCH test channel needed for 1 component transmitting test is realized in level-one switching network is built；After two-stage switching network carries out transmitting signal condition, the test of emission parameter is completed using the instrument resource of system configuration by the test resource in system by switching to any 1 level-one switching network for the distribution of secondary switch network implementations test resource；When receiving test, no longer insertion switch network divides framework based on stratification function, and the pumping signal of signal generator output and the calibration noise of noise source output enter every 1 number T/R component through single-pole double-throw switch (SPDT), two-stage power splitter.Present invention saves a large amount of microwave components, system integration difficulty is low, and Project Realization feasibility is high, and at low cost.
Description
Technical field
The present invention relates to the field of test technology, in particular to a kind of Subarray number T/R component signals conditioning device also relates to
And a kind of Subarray number T/R component signals Opsonizing method.
Background technique
Digital Array Radar is a kind of totally digitilized phased-array radar received and dispatched and be all made of digital beam forming technology.Compared with
Traditional phased-array radar, Digital Array Radar have the advantages that its is incomparable, as dynamic range is big, multi-beam easy to accomplish,
Low-loss, Sidelobe, high, strong, the system task reliability height of manufacturability of low angle altimetry precision etc., therefore, Digital Array Radar
Application prospect it is boundless.
Digital T/R component is that Digital Array Radar is most important and the most basic unit of quantity, and digital T/R component is one
The Multichannel radar transmit/receive module of Digital Microwave mixing, it is whole that optical fiber, digitlization and integrated distinctness spy is presented
Point is functionally equivalent to the simulation T/R component of traditional phased-array radar, phase shifter, front front end, frequency source extension set, receives
The synthesis of extension set and a part of Digital Signal Processing extension set.Due to using waveform generation technique and accurate width based on DDS
Phase control technology, the multichannel digital reception technique based on DDC, integrated integrated transceiver channel designing technique and high speed are big
A large amount of new technology such as capacity data transfer technology and new process, no matter from the angle of technical system, or from the angle of implementation
From the point of view of degree, digital T/R component is all the primary leap and revolution in T/R component field.
Compared with simulating T/R component, in transmit state, digital T/R component does not need input radio frequency analog signal, only
Export multiple-passage large power in-pulse modulation signals；It needs to input analog radio-frequency signal in receive state, but no longer exports mould
Quasi- radio frequency/intermediate frequency signal, but it is transmitted through the optical fiber I/Q data.That is, either individual digit T/R module testing,
Or Subarray number T/R module testing does not involve transmitting input signal in fact and receives the conditioning of output signal, and main
It is the conditioning how realized transmitting output signal and receive input signal.It should be noted that physically emitting output port
It is actually the same port with input port is received, only effect is different under different working modes.
With the development and application of Digital Array Radar, the test problem of individual digit T/R assembly property index obtains substantially
Solution is arrived.But this has been far from satisfying the needs of Digital Array Radar and the production of number T/R module development, thus
Just produce the digital T/R module testing demand based on submatrix scale.
Current Subarray number T/R component test system signal condition scheme is on the basis of single component testing scheme
On expand, below with reference to Fig. 1 by submatrix scale be 8 16 channels digital T/R component for illustrate existing signal tune
Reason scheme.
As shown in Figure 1, the port of each number T/R component connects a directional coupler, small-power coupled end connects 1 point
128 road power splitters, high-power straight-through port connection switch network, in total 128 directional couplers.When transmitting test, output
High-power transmitting signal first passes through in the straight-through port access switch network of directional coupler, is then led to using switching network
Road switching, to complete the test of power, frequency spectrum, coherent parameter；When receiving test, the pumping signal of signal generator output is first
Enter in 1 point of 128 power splitter by switching network, then digital T/R component is entered by the coupling port of directional coupler.It is above-mentioned
Process is exactly the conditioning process of receiving and transmitting signal.Exactly directional coupler is changed into single-pole double-throw switch (SPDT) there are also a kind of scheme, equally
Also conditioning purpose may be implemented.
Certainly, it is also necessary to which explanation, this reception class parameter testing of noise coefficient need logical by transmitting test at present
Road.Because dividing the receiving signal reason channel insertion loss of framework larger based on function, this is unable to complete noise coefficient test,
And emit test conditioning channel and be based primarily upon switching mode, insertion loss is lower, it is appropriate for the test of noise coefficient, but
It is because being serially test, testing efficiency is lower.
Existing receiving and transmitting signal coordinating program there are the shortcomings that are as follows:
(1) the radio frequency testings components such as a large amount of directional coupler or single-pole double-throw switch (SPDT) are needed, it is not only at high cost, and very
Hardly possible carries out the system integration, and difficulty in engineering realization is big；
(2) if changing directional coupler into single-pole double-throw switch (SPDT), Security of test is low, once single-pole double-throw switch (SPDT) occurs
Failure easily burns power splitter；
(3) switching network uses integrated design thinking, i.e., using switching network and measured number T/R component and
Test equipment is attached, and the scale of switching network is big, and scalability and maintenanceability are poor；
(4) noise coefficient needs to carry out serially test one by one by transmitting test conditioning channel, and testing efficiency is relatively low.
With the development and application of Digital Array Radar technology, measuring unit is needed in individual digit T/R module testing
On the basis of solve the digital T/R module testing problem of submatrix scale, relate to how to realize among these transmitting output signal and
Receive the conditioning of input signal.
Summary of the invention
To solve above-mentioned deficiency of the prior art, the invention proposes a kind of Subarray number T/s isolated based on transmitting-receiving
R component signals conditioning device and method.
The technical scheme of the present invention is realized as follows:
A kind of Subarray number T/R component signals conditioning device isolated based on transmitting-receiving, when transmitting is tested, every 1 number
T/R component connects 1 level-one switching network, TCH test channel needed for 1 component transmitting test is realized in level-one switching network
It builds；The distribution of secondary switch network implementations test resource, by the test resource in system by switching to any 1 one
Grade switching network completes transmitting using the instrument resource of system configuration after two-stage switching network carries out transmitting signal condition
The test of parameter；
When receiving test, no longer insertion switch network divides framework, the excitation letter of signal generator output based on stratification function
Number and noise source output calibration noise through single-pole double-throw switch (SPDT), two-stage power splitter enter every 1 number T/R component.
Optionally, current normal noise source is changed to big excess noise ratio noise source (such as 35dB or more), hot noise power
It greatly improves, compensates for due to two-stage function point bring insertion loss, so that the calibration noise of noise source output can also pass through
Enter every 1 number T/R component after single-pole double-throw switch (SPDT), two-stage power splitter, to guarantee that noise coefficient test can also be parallel
It realizes, it is no longer necessary to carry out serially test one by one by transmitting signal condition channel.
The invention also provides a kind of based on isolated Subarray number T/R component signals Opsonizing method is received and dispatched, and transmitting is surveyed
When examination, every 1 number T/R component connects 1 level-one switching network, and 1 component transmitting test is realized in level-one switching network
Required TCH test channel is built；Test resource in system is passed through switch by the distribution of secondary switch network implementations test resource
It is switched to any 1 level-one switching network and utilizes the instrument of system configuration after two-stage switching network carries out transmitting signal condition
The test of device resource completion emission parameter；
When receiving test, no longer insertion switch network divides framework, the excitation letter of signal generator output based on stratification function
Number and noise source output calibration noise through single-pole double-throw switch (SPDT), two-stage power splitter enter every 1 number T/R component.
Optionally, current normal noise source is changed to big excess noise ratio noise source (such as 35dB or more), hot noise power
It greatly improves, compensates for due to two-stage function point bring insertion loss, so that the calibration noise of noise source output can also pass through
Enter every 1 number T/R component after single-pole double-throw switch (SPDT), two-stage power splitter, to guarantee that noise coefficient test can also be parallel
It realizes, it is no longer necessary to carry out serially test one by one by transmitting signal condition channel.
The beneficial effects of the present invention are:
(1) a large amount of microwave components are saved, system integration difficulty is low, and Project Realization feasibility is high, and at low cost；
(2) transmitting-receiving test separation improves Security of test；
(3) switching network of stratification and power splitter mentality of designing are conducive to improve scalability and Maintainability index；
(4) normal noise source used at present is changed to big excess noise ratio noise source, channel serial will carries out noise one by one
Coefficient testing improvement is the test of all channel parallels, to substantially increase testing efficiency.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is existing Subarray number T/R component test system signal condition block diagram；
Fig. 2 is that Subarray number T/R component of the invention emits testing principle block diagram；
Fig. 3 is that Subarray number T/R component of the invention receives testing principle block diagram.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Current Subarray number T/R component test system signal condition scheme derives from single component testing scheme, does not have
Have and is concerned about measurement scope and increased dramatically the difficulty of the rear system integration.In addition, switching network also can be more complicated huge, thus
The problems such as with scalability and difference can be repaired.If using the scheme that directional coupler is changed into single-pole double-throw switch (SPDT), because opening
Security of test can also can be greatly reduced in the growth for closing quantity.In addition, noise coefficient need by transmitting test conditioning channel by
One carries out serially test, and testing efficiency is relatively low.
Because there are disadvantages mentioned above for the prior art, the invention proposes a kind of Subarray number T/Rs isolated based on transmitting-receiving
Component signals conditioning device and method, transmitting test and reception test carry out thoroughly physical separation, TCH test channel and tester
Device not re-multiplexing.
As shown in Fig. 2, emitting test the present invention is based on isolated Subarray number T/R component signals conditioning device is received and dispatched
When, it is no longer necessary to for receiving and dispatching a large amount of directional couplers or single-pole double-throw switch (SPDT) of separation, this is for Subarray test
A large amount of microwave component will be saved.Every 1 number T/R component connects 1 level-one switching network, if it is 8 number T/R groups
Part just has 8 level-one switching networks, and TCH test channel needed for 1 component transmitting test is realized in level-one switching network is built.
It is 16 road emission ports to the 3 class instrument such as coherent, frequency spectrum, power inside level-one switching network by taking 16 channel number word T/R components as an example
The switching network of device port (being at present 6 ports, be 4 coherent ports, 1 frequency spectrum port, 1 power port respectively).Two
Grade switching network realizes the distribution of the test resources such as coherent, frequency spectrum, power, and being equivalent in system has multiple groups test resource, these
Test resource can pass through switching to any 1 level-one switching network.Transmitting signal tune is carried out by two-stage switching network
After reason, the test of emission parameter can be completed using the instrument resource of system configuration.
In addition, Subarray provided by the invention transmitting signal regulating device not only save a large amount of directional coupler or
The microwave components such as single-pole double-throw switch (SPDT), and original unified switching network in large scale has been split into two-stage switch net
Network.Or it is illustrated by taking the transmitting test of the digital T/R component in 8 16 channels as an example, the switching network scale of original scheme is
129 ports (the 128 road ports T/R and 1 road power splitter input port) to 8 drive test test instrument ports (wherein coherent port is 4),
In large scale, scalability and maintainability are all poor.And the unified switching network of bulky complex has been splitted into 8 16 tunnels by the present invention
The second level of emission port to the 3 classes level-one switching network of totally 6 instrument ports and 1 class of N × 6 to 3 totally 6 instrument ports is opened
It closes network (N can be greater than measured piece quantity).If increasing measurement scope, secondary switch network is remained unchanged, and only needs to increase
Add corresponding level-one switching network, which improves the scalability indexs of system.In addition, after stratification is split, often
The complexity of platform switching network is also greatly lowered, and certain Maintainability index can also be greatly improved.
As shown in figure 3, when receiving test, it is no longer necessary to insertion switch network, but divide framework based on stratification function.Still
It is illustrated so that the digital T/R component in 8 16 channels receives test as an example, the pumping signal of signal generator output is double through hilted broadsword
Throw switch, the first order 1 divide after 8 power splitters while entering 8 second levels 1 and divide in 16 road power splitters, to form the excitation of 128 road coherents
Signal.If first order power splitter branch quantity is greater than 8, if to increase measurement scope, only need to increase corresponding second level 1 divides 16
Road power splitter, which improves the scalability indexs of system, and facilitate the system integration.It simultaneously will be current general
Logical noise source is changed to big excess noise ratio noise source (such as 35dB or more), and hot noise power is greatly improved, compensated for due to two-stage function
Divide bring insertion loss, so that after the calibration noise of noise source output can also be by single-pole double-throw switch (SPDT), two-stage power splitter
Into every 1 number T/R component, to guarantee that noise coefficient test can also be with Parallel Implementation, it is no longer necessary to by transmitting signal
Conditioning channel carries out serially test one by one.
The invention also provides a kind of based on isolated Subarray number T/R component signals Opsonizing method is received and dispatched, and realizes former
Reason is identical as above-mentioned signal regulating device, and which is not described herein again.
The Subarray number T/R component signals conditioning device and method isolated based on transmitting-receiving of the invention saves a large amount of micro-
Parts for wave, system integration difficulty is low, and Project Realization feasibility is high, and at low cost；Transmitting-receiving test separation improves test safety
Property；The switching network and power splitter mentality of designing of stratification are conducive to improve scalability and Maintainability index.It will be used at present
Normal noise source is changed to big excess noise ratio noise source, will one by one channel serial carry out noise coefficient testing improvement be all channels simultaneously
Row test, to substantially increase testing efficiency.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (4)
1. a kind of Subarray number T/R component signals conditioning device isolated based on transmitting-receiving, which is characterized in that when transmitting test,
Every 1 number T/R component connects 1 level-one switching network, is realized needed for 1 component transmitting test in level-one switching network
TCH test channel is built；The distribution of secondary switch network implementations test resource, the test resource in system is arrived by switching
Any 1 level-one switching network utilizes the instrument resource of system configuration after two-stage switching network carries out transmitting signal condition
Complete the test of emission parameter；
When receiving test, no longer insertion switch network divides framework based on stratification function, the pumping signal of signal generator output and
The calibration noise of noise source output enters every 1 number T/R component through single-pole double-throw switch (SPDT), two-stage power splitter；When transmitting test,
Increase measurement scope, then secondary switch network remains unchanged, and need to only increase corresponding level-one switching network；When receiving test,
Increase measurement scope, need to only increase corresponding second level power splitter.
2. a kind of Subarray number T/R component signals conditioning device isolated based on transmitting-receiving as described in claim 1, feature
It is, the noise source is the noise source of 35dB or more.
3. a kind of Subarray number T/R component signals Opsonizing method isolated based on transmitting-receiving, which is characterized in that when transmitting test,
Every 1 number T/R component connects 1 level-one switching network, is realized needed for 1 component transmitting test in level-one switching network
TCH test channel is built；The distribution of secondary switch network implementations test resource, the test resource in system is arrived by switching
Any 1 level-one switching network utilizes the instrument resource of system configuration after two-stage switching network carries out transmitting signal condition
Complete the test of emission parameter；
When receiving test, no longer insertion switch network divides framework based on stratification function, the pumping signal of signal generator output and
The calibration noise of noise source output enters every 1 number T/R component through single-pole double-throw switch (SPDT), two-stage power splitter.
4. a kind of Subarray number T/R component signals Opsonizing method isolated based on transmitting-receiving as claimed in claim 3, feature
It is, the noise source is the noise source of 35dB or more.
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| CN106506099B (en) * | 2016-10-28 | 2019-03-26 | 中国人民解放军海军北海舰队航空兵航空仪器计量站 | A kind of device and method for digital T/R component environment experimental test |
| CN111289963A (en) * | 2020-02-29 | 2020-06-16 | 哈尔滨吉赫科技有限责任公司 | Continuous millimeter wave terahertz ultra-wideband noise radar |
| CN113328814B (en) * | 2021-05-27 | 2022-08-26 | 中国船舶重工集团公司第七二三研究所 | Broadband active phased array area monitoring system |
| CN115372751B (en) * | 2022-10-24 | 2022-12-20 | 成都爱科特科技发展有限公司 | Multichannel batched TR component noise coefficient testing method |
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