CN108988965A - A kind of in-orbit correction system and method for novel array antenna - Google Patents
A kind of in-orbit correction system and method for novel array antenna Download PDFInfo
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- CN108988965A CN108988965A CN201810957468.8A CN201810957468A CN108988965A CN 108988965 A CN108988965 A CN 108988965A CN 201810957468 A CN201810957468 A CN 201810957468A CN 108988965 A CN108988965 A CN 108988965A
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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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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
- H04B17/21—Monitoring; Testing of receivers for calibration; for correcting measurements
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Abstract
A kind of in-orbit correction system and method for novel array antenna, including antenna array, radio-frequency channel, low-converter group, DBF processor, upconverter, external transmitting antenna, antenna array includes N number of radiating element, radio-frequency channel includes the identical channel of N line structure, any channel includes filter, low-noise amplifier, the channel all the way of any radiating element connection radio-frequency channel of antenna array, the central passage of radio-frequency channel integrates coupler, load, the radiating element of central passage connection is denoted as central radiating element, low-converter group includes the road N low-converter, every road low-converter is all connected with channel in radio-frequency channel all the way, DBF processor includes digital processing unit, D/A converter, the road N AD converter, every road AD converter is all connected with low-converter all the way.
Description
Technical field
The present invention relates to a kind of in-orbit correction systems of novel array antenna, are coupled more particularly to a kind of using unit in battle array
Mode, the correction system that interior correction is just being combined with diplomacy, belongs to antenna technical field.
Background technique
Due to various reasons (such as component performance decline or damage) making Active Arrays each unit, there are amplitudes
And phase error, it can seriously affect antenna lobe performance.Have compared with common ground correction for spaceborne phased array antenna
Some particular/special requirements, due to the limitation of satellite load, it is impossible to too many calibration equipment is installed on satellite, it is desirable that bearing calibration
It is simple as far as possible.
Currently, Active Arrays bearing calibration can be divided mainly into interior correction and the positive two major classes of diplomacy.
Interior alignment technique is mature, performance is stablized, but do not account for each radiating element performance difference, generally requires increase
Corrective network has a large amount of directional coupler, matrix switch and its driving circuit, increases product design complexity, equipment amount
Greatly.
There are many outer bearing calibration, specifically include that near-field scan technology, matrix inversion method, UTE, CCE, REV, commutation method, mutually
Coupling calibration method, midfield calibration method etc..Some in these methods need to increase additional hardware, increase product design complexity,
Some need complicated algorithm analysis, and versatility is not strong.
Summary of the invention
Technology of the invention solves the problems, such as: overcoming the deficiencies of the prior art and provide a kind of in-orbit school of novel array antenna
Positive system, using unit coupled modes in battle array, the method that interior correction is combined with outer correction solves current correcting algorithm complexity,
Correct the problems such as system structure is complicated, and versatility is not strong.
The technical solution of the invention is as follows: a kind of in-orbit correction system of novel array antenna, including antenna array, radio frequency
Channel, low-converter group, DBF processor, upconverter, external transmitting antenna, in which:
Antenna array includes N number of radiating element, and radio-frequency channel includes the identical channel of N line structure, and any channel includes filter
Wave device, low-noise amplifier, the channel all the way of any radiating element connection radio-frequency channel of antenna array, the center of radio-frequency channel
Channel integrates coupler, load, and the radiating element of central passage connection is denoted as central radiating element, and low-converter group includes the road N
Low-converter, every road low-converter are all connected with channel in radio-frequency channel all the way, and DBF processor includes digital processing unit, DA conversion
Device, the road N AD converter, every road AD converter are all connected with low-converter all the way；
External transmitting antenna carries out channel width to the road the N AD converter in radio-frequency channel, low-converter group, DBF processor
Mutually wireless trim, antenna array receive the single-carrier signal that external transmitting antenna is sent, and single-carrier signal is through radio-frequency channel, lower change
Frequency device group is sent carry out analog-to-digital conversion after the road the N AD converter into DBF processor after send to digital processing unit, digital processing unit is adopted
Collect the obtained road N width phase data, the road N width phase data is normalized, obtains the road N width and be mutually used as initial value logical to radio frequency
Road, low-converter group, the road N AD converter carry out channel compensation；Digital processing unit generates IF alignment signal after D/A converter
It send to upconverter and carries out up-conversion, be re-fed into the integrated coupler of central passage, enter through coupler rear portion branch school positive signal
Low-noise amplifier is sent into DBF processor after downconverted device group, and another partial correction signal couples laggard through port in coupler
Enter central passage respective filter, then enter other radiating elements through central radiating element, and filtered, amplify after be sent into DBF
Processor, DBF processor collect the road N width mutually as correction contingency table.
The coupler is 20dB coupler.
The digital processing unit includes middle correction processing module, computer, in which:
The road N width phase data that correction process module collects single-carrier signal simultaneously reaches computer, and computer is to the road N
Width phase data is normalized, and obtains the road N width and is mutually used as initial value to radio-frequency channel, low-converter group, the road N AD converter
Carry out channel compensation；Correction signal generation module generation IF alignment signal, which is sent after D/A converter to upconverter, carries out upper change
Frequently.
Described enters the partial correction signal of low-noise amplifier for -50dB, through port in coupler after coupler
Entering the another partial correction signal of central passage respective filter after coupling is -20dB.
A kind of in-orbit bearing calibration of novel array antenna, includes the following steps:
(1) road the N AD converter in radio-frequency channel, low-converter group, DBF processor is carried out using external transmitting antenna
Trim that channel width is mutually wireless；
(2) single-carrier signal that external transmitting antenna is sent is received using antenna array, controls single-carrier signal through radio frequency
Channel, low-converter group are sent carry out analog-to-digital conversion after the road the N AD converter into DBF processor after send to digital processing unit；
(3) it enables the road the N width phase data that correction processing module collects in digital processing unit and reaches in digital processing unit
Computer, computer is normalized the road N width phase data, obtains the road N width and be mutually used as initial value, and send logical to radio frequency
Road, low-converter group, the road N AD converter are used for channel compensation；
(4) it controls after the correction signal generation module in digital processing unit generates IF alignment signal and send to D/A converter
DA transformation is carried out, is then sent to after upconverter carries out up-conversion and is sent into the integrated coupler of radio-frequency channel central passage, warp
Coupler rear portion branch school positive signal enters low-noise amplifier, and DBF processor, warp are sent into after radio-frequency channel, low-converter group
Another partial correction signal enters central passage respective filter after port couples after coupler, enters it through central radiating element
Its radiating element, and DBF processor is sent into after being filtered, being amplified, DBF processor mutually closes the collected road N width as correction
Join Table A；
(5) when the corresponding component damage of radio-frequency channel, low-converter group, DBF processor, there are channel magnitude-phase characteristics
Variation repeats step (4), so that DBF processor obtains correction contingency table B, B-A is as radio-frequency channel 2, low-converter group 3, N
The channel compensation value of road AD converter completes the in-orbit correction of novel array antenna.
The coupler is 20dB coupler.
Described enters the partial correction signal of low-noise amplifier for -50dB, through port in coupler after coupler
Entering the another partial correction signal of central passage respective filter after coupling is -20dB.
The present invention has the beneficial effect that compared with prior art
(1) present invention rationally integrates single channel coupler by the central passage in radio-frequency channel, realizes that correction signal passes
It is defeated, compared with correcting system in tradition, have the advantages that structure is simple, hardware resource requirements are few；
(2) present invention uses front central radiating element spatial coupling, realizes that the other units of front receive correction letter
Number, compared with conventional correction systems, special correcting circuit beacon is eliminated, simplifies correction system structure, has saved resource on star；
(3) present invention incorporates interior correction and outer bearing calibration, correction realizes that step is simple, with conventional correction methods phase
Than having correction process simple, not needing that complicated algorithm, correction time are short, have extensive application value.
Detailed description of the invention
Fig. 1 is the in-orbit correction system schematic of array antenna of the present invention.
Specific embodiment
The present invention overcomes the deficiencies of the prior art and provide a kind of in-orbit correction system of novel array antenna, using single in battle array
Interior correction is combined with outer correction and solves current correcting algorithm complexity, correction system structure complexity, versatility by first coupled modes
Not strong problem.A kind of in-orbit correction system of novel array antenna of the present invention, including antenna array, radio-frequency channel, low-converter
Group, DBF (Digital Beam-Forming) processor, upconverter, external transmitting antenna；Wherein, in radio-frequency channel
Heart channel is integrated with coupler, and the correction signal of DBF processor is sent into after up-conversion to be located in central passage coupler, about-
0.04dB signal is supported absorption, and about -50dB signal enters the low-noise amplifier of central passage after port couples, is re-fed into
Rear end DBF processor is corrected processing, and about -20dB signal enters central passage filter after port couples in coupler,
And radiated through center cell, closed on by unit and be coupled into the other units of front, behind radio-frequency channel be sent into DBF processor into
Row correction process is explained in more detail and illustrates to the present invention with reference to the accompanying drawing.
The in-orbit correction system composition of novel array antenna of the present invention is as shown in Figure 1, include the antenna of N number of radiating element composition
Front 1, radio-frequency channel 2, low-converter group 3, DBF processor 4, upconverter 5, external transmitting antenna 6；Radio-frequency channel 2 includes N
The identical channel of line structure, any channel are made of filter, low-noise amplifier (LNA), a radiation of antenna array 1
Unit connects the channel all the way of radio-frequency channel 2, the integrated coupler all the way of the central passage of radio-frequency channel 2, load, and central passage connects
The radiating element connect is denoted as central radiating element, and low-converter group 3 includes the road N low-converter, and (low-converter needs local oscillator to input
L0 and power supply power supply DC realize its function), every road low-converter is all connected with the channel in radio-frequency channel 2 all the way, DBF processor 4
Including digital processing unit, D/A converter, the road N AD converter, every road AD converter is all connected with low-converter all the way；Present invention correction
The workflow of system includes the following steps:
Step 1: being turned using external transmitting antenna 6 to the road the N AD in radio-frequency channel 2, low-converter group 3, DBF processor 4
Parallel operation carries out the mutually wireless trim of channel width.The single-carrier signal that external transmitting antenna 6 is sent is received using antenna array 1, it is single to carry
Wave signal is sent after carrying out analog-to-digital conversion after radio-frequency channel 2, low-converter group 3, the road the N AD converter that send into DBF processor 4
Processing module is corrected to digital processing unit, in digital processing unit will reach computer, control meter under the collected road N width phase data
The road N width phase data is normalized in calculation machine, will treated that the road N width is mutually used as initial value, send to radio-frequency channel 2, under
Frequency converter group 3, the road N AD converter are used for channel compensation.
Step 2: correction contingency table acquisition.Correction signal generation module in digital processing unit generates IF alignment all the way
DA transformation is carried out after sending after signal (the PN code that correction signal form is BPSK modulation) to D/A converter, and is sent to upconverter 5
It is sent into the integrated 20dB coupler of 2 central passage of radio-frequency channel after carrying out up-conversion, the correction signal after -0.04dB up-conversion
It is supported absorption, about -50dB signal enters low-noise amplifier after 20dB coupler, through radio-frequency channel 2, low-converter group 3
It is re-fed into DBF processor 4, about -20dB signal enters the corresponding filter of central passage after port couples in coupler, and passes through
Central radiating element is radiate, and is then coupled into other radiating elements by closing on for central radiating element, and filtered,
DBF processor 4 is sent into after amplification, DBF processor 4 mutually stores the collected road N width as correction contingency table A.
Step 3: in-orbit correction is realized.In in orbit, in case of radio-frequency channel 2, low-converter group 3, DBF processor 4 are right
Component damage and performance decline answered etc., there are the variations of channel magnitude-phase characteristics, step 2 are repeated, so that DBF processor obtains
It is radio-frequency channel 2, low-converter group 3, the channel compensation value of the road N AD converter to the road N width phase data B, B-A.
The in-orbit correction system of novel array antenna provided by the invention, constructional hardware is simple, does not need to increase product complexity
Degree, does not need complicated algorithm, it is only necessary to which 1 road coupled signal can meet full battle array width phase information collection, active array is rapidly completed
The correction of antenna.The correction system that the present invention is introduced is simple with system and test, hardware resource requirements are few, correction time
Feature short, stability is high can be applied to ground, the fault diagnosis on star and amplitude and phase correction, have very strong market competition
Power and wide application prospect.
Unspecified part of the present invention belongs to common sense well known to those skilled in the art.
Claims (7)
1. a kind of in-orbit correction system of novel array antenna, it is characterised in that including antenna array, radio-frequency channel, low-converter
Group, DBF processor, upconverter, external transmitting antenna, in which:
Antenna array includes N number of radiating element, and radio-frequency channel includes the identical channel of N line structure, any channel include filter,
Low-noise amplifier, the channel all the way of any radiating element connection radio-frequency channel of antenna array, the central passage of radio-frequency channel
The radiating element of integrated coupler, load, central passage connection is denoted as central radiating element, and low-converter group includes becoming under the road N
Frequency device, every road low-converter are all connected with channel in radio-frequency channel all the way, and DBF processor includes digital processing unit, D/A converter, N
Road AD converter, every road AD converter are all connected with low-converter all the way；
External transmitting antenna carries out channel width phase nothing to the road the N AD converter in radio-frequency channel, low-converter group, DBF processor
Line trim, antenna array receive the single-carrier signal that external transmitting antenna is sent, and single-carrier signal is through radio-frequency channel, low-converter
Group is sent carry out analog-to-digital conversion after the road the N AD converter into DBF processor after send to digital processing unit, digital processing unit acquires
The road the N width phase data arrived, is normalized the road N width phase data, obtain the road N width be mutually used as initial value to radio-frequency channel,
Low-converter group, the road N AD converter carry out channel compensation；Digital processing unit generate IF alignment signal sent after D/A converter to
Upconverter carries out up-conversion, is re-fed into the integrated coupler of central passage, enters low noise through coupler rear portion branch school positive signal
Acoustic amplifier, DBF processor is sent into after downconverted device group, during another partial correction signal enters after port couples in coupler
Heart channel respective filter, then enter other radiating elements through central radiating element, and DBF processing is sent into after being filtered, being amplified
Device, DBF processor collect the road N width mutually as correction contingency table.
2. the in-orbit correction system of a kind of novel array antenna according to claim 1, it is characterised in that: the coupling
Device is 20dB coupler.
3. according to claim 1 or a kind of in-orbit correction system of novel array antenna described in 2, it is characterised in that: described
Digital processing unit includes middle correction processing module, computer, in which:
The road N width phase data that correction process module collects single-carrier signal simultaneously reaches computer, and computer is to the road N width phase
Data are normalized, and obtain the road N width and initial value is mutually used as to carry out radio-frequency channel, low-converter group, the road N AD converter
Channel compensation；Correction signal generation module generates IF alignment signal and is sent after D/A converter to upconverter progress up-conversion.
4. the in-orbit correction system of a kind of novel array antenna according to claim 1, it is characterised in that: described is coupled
The partial correction signal for entering low-noise amplifier after device is -50dB, enters central passage pair after port couples in coupler
Answering the another partial correction signal of filter is -20dB.
5. a kind of in-orbit bearing calibration of novel array antenna, it is characterised in that include the following steps:
(1) channel is carried out to the road the N AD converter in radio-frequency channel, low-converter group, DBF processor using external transmitting antenna
Trim that width is mutually wireless；
(2) receive the single-carrier signal that external transmitting antenna is sent using antenna array, control single-carrier signal through radio-frequency channel,
Low-converter group is sent carry out analog-to-digital conversion after the road the N AD converter into DBF processor after send to digital processing unit；
(3) it enables the road the N width phase data that correction processing module collects in digital processing unit and reaches the meter in digital processing unit
The road N width phase data is normalized in calculation machine, computer, obtains the road N width and is mutually used as initial value, and send to radio-frequency channel,
Low-converter group, the road N AD converter are used for channel compensation；
(4) it is carried out after sending after the correction signal generation module generation IF alignment signal in control digital processing unit to D/A converter
DA transformation is then sent to after upconverter carries out up-conversion and is sent into the integrated coupler of radio-frequency channel central passage, coupled
Device rear portion branch school positive signal enters low-noise amplifier, and DBF processor is sent into after radio-frequency channel, low-converter group, coupled
Another partial correction signal enters central passage respective filter after port couples after device, enters other spokes through central radiating element
Unit is penetrated, and is sent into DBF processor after being filtered, being amplified, DBF processor is by the collected road N width mutually as correction contingency table
A；
(5) when the corresponding component damage of radio-frequency channel, low-converter group, DBF processor, there are the changes of channel magnitude-phase characteristics
Change, repeat step (4), so that DBF processor obtains correction contingency table B, B-A is as radio-frequency channel 2, low-converter group 3, the road N
The channel compensation value of AD converter completes the in-orbit correction of novel array antenna.
6. the in-orbit bearing calibration of a kind of novel array antenna according to claim 5, it is characterised in that: the coupler
For 20dB coupler.
7. the in-orbit bearing calibration of a kind of novel array antenna according to claim 5, it is characterised in that: described is coupled
The partial correction signal for entering low-noise amplifier after device is -50dB, enters central passage pair after port couples in coupler
Answering the another partial correction signal of filter is -20dB.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810957468.8A CN108988965B (en) | 2018-08-22 | 2018-08-22 | Novel array antenna on-orbit correction system and method |
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| CN201810957468.8A CN108988965B (en) | 2018-08-22 | 2018-08-22 | Novel array antenna on-orbit correction system and method |
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| CN108988965B CN108988965B (en) | 2021-04-13 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111435765A (en) * | 2019-01-14 | 2020-07-21 | 亚德诺半导体国际无限责任公司 | Antenna device with switch for antenna array calibration |
| CN114070429A (en) * | 2021-10-28 | 2022-02-18 | 中国电子科技集团公司第二十九研究所 | Method for combining radio frequency internal and external correction and computer storage medium |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102136860A (en) * | 2011-03-10 | 2011-07-27 | 西安电子科技大学 | Channel correction system and method for transmission digital beam forming technology |
| CN103399324A (en) * | 2013-08-13 | 2013-11-20 | 北京星地恒通信息科技有限公司 | Anti-interference antenna of satellite navigation |
| JP2018100839A (en) * | 2016-12-19 | 2018-06-28 | アンリツ株式会社 | Calibration device and calibration method |
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2018
- 2018-08-22 CN CN201810957468.8A patent/CN108988965B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102136860A (en) * | 2011-03-10 | 2011-07-27 | 西安电子科技大学 | Channel correction system and method for transmission digital beam forming technology |
| CN103399324A (en) * | 2013-08-13 | 2013-11-20 | 北京星地恒通信息科技有限公司 | Anti-interference antenna of satellite navigation |
| JP2018100839A (en) * | 2016-12-19 | 2018-06-28 | アンリツ株式会社 | Calibration device and calibration method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111435765A (en) * | 2019-01-14 | 2020-07-21 | 亚德诺半导体国际无限责任公司 | Antenna device with switch for antenna array calibration |
| CN111435765B (en) * | 2019-01-14 | 2022-02-18 | 亚德诺半导体国际无限责任公司 | Antenna device with switch for antenna array calibration |
| CN114070429A (en) * | 2021-10-28 | 2022-02-18 | 中国电子科技集团公司第二十九研究所 | Method for combining radio frequency internal and external correction and computer storage medium |
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| CN108988965B (en) | 2021-04-13 |
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