CN106887723A - A kind of phased array antenna array element amplitude and phase correction system - Google Patents
A kind of phased array antenna array element amplitude and phase correction system Download PDFInfo
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- CN106887723A CN106887723A CN201510935729.2A CN201510935729A CN106887723A CN 106887723 A CN106887723 A CN 106887723A CN 201510935729 A CN201510935729 A CN 201510935729A CN 106887723 A CN106887723 A CN 106887723A
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- 238000012937 correction Methods 0.000 title claims abstract description 40
- 238000005070 sampling Methods 0.000 claims abstract description 14
- 238000012545 processing Methods 0.000 claims abstract description 13
- 238000010606 normalization Methods 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000004364 calculation method Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 3
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- 230000008859 change Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q23/00—Antennas with active circuits or circuit elements integrated within them or attached to them
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- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention belongs to field of electric control, and in particular to a kind of phased array antenna array element amplitude and phase correction system, including microwave point source, treat phased array antenna, radio-frequency transmitter, correction module under school；Wherein, microwave point source is located at and treats under school at phased array antenna far field；Phased array antenna is connected by radio-frequency transmitter with correction module under treating school；Correction module includes if sampling module, A/D modular converters, digital signal processing module, output module；Radio-frequency transmitter unidirectionally connects if sampling module；The unidirectional connection successively of if sampling module, A/D modular converters, digital signal processing module, output module；The present invention is by placing microwave point source on the far field of phased array antenna in the case where school is treated, microwave incident direction is set to treat phased array antenna under school for vertical incidence, array element amplitude and phase correction is carried out so as to the deviation of the microwave incident direction caused using array element error, the setting of other correction module, reduce array data amount so that amount of calculation is greatly reduced.
Description
Technical field
The invention belongs to field of electric control, and in particular to a kind of phased array antenna array element amplitude and phase correction system.
Background technology
Nowadays, in the research field industry such as electronics, communication, radar, sonar, often by the defective in quality product replaced and, maintenace point is sent to by internal staff to repair, this in industry turns into DOA, and DOA location technology principles be exactly using receiver at array antenna and Mutual coupling technology determine a direction of arrival line from receiver to information source, as direction line, the DOA for finally being estimated using multiple receivers is carried out solution degree and measured, and the intersection point of direction line is exactly the estimated location of information source.
At present in actual engineering, DOA algorithm for estimating is often extremely difficult to its theoretical algorithm performance, and except inevitable disturbing factor such as noise etc., a very big reason is because array has error in itself.In the middle of engineer applied, when most all be give tacit consent to array error it is unrelated with signal and incident direction, but actual nearly all array element error is all relevant with incident direction, simultaneously because array data amount is big, cause amount of calculation to increase severely, be more difficult in engineering, while also have to propose to be corrected using the method for auxiliary array element, but auxiliary array element requires it itself is to obtain accurately correcting in itself, and high to material requirements（It is required that isotropism）, thus be not easy to realize.
The content of the invention
The purpose of the present invention is the disadvantages mentioned above for overcoming prior art, there is provided a kind of phased array antenna array element amplitude and phase correction system.
To achieve these goals, the technical solution adopted in the present invention is：A kind of phased array antenna array element amplitude and phase correction system, including microwave point source, treat phased array antenna, radio-frequency transmitter, correction module under school；Wherein, the microwave point source is located at and treats under school at phased array antenna far field；It is described treat school under phased array antenna be connected with correction module by radio-frequency transmitter；The correction module includes if sampling module, A/D modular converters, digital signal processing module, output module；The radio-frequency transmitter unidirectionally connects if sampling module；The unidirectional connection successively of the if sampling module, A/D modular converters, digital signal processing module, output module.
A kind of above-mentioned phased array antenna array element amplitude and phase correction system, the microwave point source can make to treat that the incidence wave of phased array antenna under school is considered plane wave in engineering, and the incident direction of microwave treats phased array antenna under school for vertical incidence.
A kind of above-mentioned phased array antenna array element amplitude and phase correction system, the radio-frequency transmitter is by signal from down-frequency conversion into intermediate-freuqncy signal.
A kind of above-mentioned phased array antenna array element amplitude and phase correction system, the correction module is arranged in microwave dark room.
A kind of above-mentioned phased array antenna array element amplitude and phase correction system, the digital signal processing module is made up of array element width phase computing module and normalization computing module, and array element width phase computing module and normalization computing module are unidirectionally connected.
Beneficial effects of the present invention：The present invention is by placing a microwave point source on the far field of phased array antenna in the case where school is treated, so that the incident direction of microwave treats phased array antenna under school for vertical incidence, array element amplitude and phase correction is carried out so as to the deviation of the microwave incident direction caused using array element error, the setting of other correction module, reduce array data amount so that amount of calculation is greatly reduced.
Brief description of the drawings
The present invention is specifically described below by accompanying drawing and in conjunction with the embodiments, advantages of the present invention and implementation will be more obvious, and wherein content is only used for explanation of the present invention shown in accompanying drawing, without constituting to the limitation gone up in all senses of the invention.
Fig. 1 is a kind of structural representation of phased array antenna array element amplitude and phase correction system of the invention；
Description of reference numerals：1st, microwave point source；2nd, phased array antenna under school is treated；3rd, radio-frequency transmitter；4th, correction module；5th, if sampling module；6th, A/D modular converters；7th, digital signal processing module；8th, output module.
Specific embodiment
Embodiments of the invention are elaborated below：The present embodiment is implemented under premised on technical solution of the present invention, gives detailed implementation method and specific operating process.It should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, can also make some variations and modifications, these belong to the scope of the present invention.
As shown in figure 1, a kind of phased array antenna array element amplitude and phase correction system, including microwave point source 1, treat phased array antenna 2, radio-frequency transmitter 3, correction module 4 under school；Wherein, the microwave point source 1 is located at and treats under school at the far field of phased array antenna 2；It is described treat school under phased array antenna 2 be connected with correction module 4 by radio-frequency transmitter 3；The correction module 4 includes if sampling module 5, A/D modular converters 6, digital signal processing module 7, output module 8；The radio-frequency transmitter 3 unidirectionally connects if sampling module 5；The unidirectional connection successively of the if sampling module 5, A/D modular converters 6, digital signal processing module 7, output module 8.
Further, the microwave point source 1 can make to treat that the incidence wave of phased array antenna 2 under school is considered plane wave in engineering, and the incident direction of microwave treats phased array antenna 2 under school for vertical incidence.
Further, the radio-frequency transmitter 3 by signal from down-frequency conversion into intermediate-freuqncy signal.
Further, the correction module 4 is arranged in microwave dark room.
Further, the digital signal processing module 7 is made up of array element width phase computing module and normalization computing module, and array element width phase computing module and normalization computing module are unidirectionally connected.
Operation principle of the invention：
A microwave point source 1 is placed on the far field of phased array antenna 2 in the case where school is treated, make to treat that the incidence wave of phased array antenna 2 under school is considered plane wave in engineering, and the incident direction of microwave treats phased array antenna 2 under school for vertical incidence, treat that the microwave signal that phased array antenna 2 will be received under school is down-converted to intermediate-freuqncy signal by radio-frequency transmitter 3, the signal for being received each array element by if sampling module 5 is digitized by A/D modular converters 6, then by the array element width phase computing module in digital signal processing module 7 and normalization computing module, array element width is carried out mutually to calculate, and certain array element is chosen as benchmark array element, other array elements are normalized calculating.Normalization result difference is made up finally by calculating, correction parameter is drawn, and is exported by output module 8, for phased array antenna 2 provides correction parameter under treating school.Separately, correction module 4 is operated in microwave dark room.
The above is preferred exemplary applications of the invention, not limitation of the present invention, and every simple modification made according to technical key point, structure change change belong to protection scope of the present invention.
Claims (5)
1. a kind of phased array antenna array element amplitude and phase correction system, it is characterised in that：Including microwave point source（1）, treat phased array antenna under school（2）, radio-frequency transmitter（3）, correction module（4）；Wherein, the microwave point source（1）The phased array antenna under school is treated（2）At far field；It is described to treat phased array antenna under school（2）By radio-frequency transmitter（3）With correction module（4）It is connected；The correction module（4）Including if sampling module（5）, A/D modular converters（6）, digital signal processing module（7）, output module（8）；The radio-frequency transmitter（3）Unidirectional connection if sampling module（5）；The if sampling module（5）, A/D modular converters（6）, digital signal processing module（7）, output module（8）Unidirectional connection successively.
2. a kind of phased array antenna array element amplitude and phase correction system according to claim 1, it is characterised in that：The correction module（4）It is arranged in microwave dark room.
3. a kind of phased array antenna array element amplitude and phase correction system according to claim 1, it is characterised in that：The radio-frequency transmitter（3）By signal from down-frequency conversion into intermediate-freuqncy signal.
4. a kind of phased array antenna array element amplitude and phase correction system according to claim 1, it is characterised in that：The digital signal processing module（7）It is made up of array element width phase computing module and normalization computing module, and array element width phase computing module and normalization computing module are unidirectionally connected.
5. a kind of phased array antenna array element amplitude and phase correction system according to claim 1, it is characterised in that：The microwave point source（1）Can make to treat phased array antenna under school（2）Incidence wave be considered plane wave in engineering, and the incident direction of microwave treats phased array antenna under school for vertical incidence（2）.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510935729.2A CN106887723A (en) | 2015-12-15 | 2015-12-15 | A kind of phased array antenna array element amplitude and phase correction system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510935729.2A CN106887723A (en) | 2015-12-15 | 2015-12-15 | A kind of phased array antenna array element amplitude and phase correction system |
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| CN106887723A true CN106887723A (en) | 2017-06-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107843881A (en) * | 2017-10-24 | 2018-03-27 | 中国人民解放军空军工程大学 | Radar angular estimates and error calibration method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5559519A (en) * | 1995-05-04 | 1996-09-24 | Northrop Grumman Corporation | Method and system for the sequential adaptive deterministic calibration of active phased arrays |
| CN102426300A (en) * | 2011-08-31 | 2012-04-25 | 西安空间无线电技术研究所 | Calibration system of amplitude and phase errors of satellite-borne wave beam formation reception channels and method thereof |
| CN102520419A (en) * | 2011-11-22 | 2012-06-27 | 航天恒星科技有限公司 | Receiving system and receiving method for GNSS (global navigation satellite system) sea reflecting signal |
| CN103364646A (en) * | 2013-07-25 | 2013-10-23 | 合肥师范学院 | Rapid microwave anechoic room antenna far field measurement method |
| CN104779989A (en) * | 2015-05-11 | 2015-07-15 | 重庆大学 | Boardband array correcting filter coefficient calculation method |
-
2015
- 2015-12-15 CN CN201510935729.2A patent/CN106887723A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5559519A (en) * | 1995-05-04 | 1996-09-24 | Northrop Grumman Corporation | Method and system for the sequential adaptive deterministic calibration of active phased arrays |
| CN102426300A (en) * | 2011-08-31 | 2012-04-25 | 西安空间无线电技术研究所 | Calibration system of amplitude and phase errors of satellite-borne wave beam formation reception channels and method thereof |
| CN102520419A (en) * | 2011-11-22 | 2012-06-27 | 航天恒星科技有限公司 | Receiving system and receiving method for GNSS (global navigation satellite system) sea reflecting signal |
| CN103364646A (en) * | 2013-07-25 | 2013-10-23 | 合肥师范学院 | Rapid microwave anechoic room antenna far field measurement method |
| CN104779989A (en) * | 2015-05-11 | 2015-07-15 | 重庆大学 | Boardband array correcting filter coefficient calculation method |
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| 刘朋等: "一种相控阵雷达天线极化特征的外场测试方法", 《中国测试技术》 * |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107843881A (en) * | 2017-10-24 | 2018-03-27 | 中国人民解放军空军工程大学 | Radar angular estimates and error calibration method |
| CN107843881B (en) * | 2017-10-24 | 2020-04-03 | 中国人民解放军空军工程大学 | Radar angle estimation and error correction method |
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Application publication date: 20170623 |