CN108562876A - Broadband low minor lobe simulates multiple-beam array reconnaissance system - Google Patents
Broadband low minor lobe simulates multiple-beam array reconnaissance system Download PDFInfo
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- CN108562876A CN108562876A CN201810094615.3A CN201810094615A CN108562876A CN 108562876 A CN108562876 A CN 108562876A CN 201810094615 A CN201810094615 A CN 201810094615A CN 108562876 A CN108562876 A CN 108562876A
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- broadband
- reconnaissance system
- array
- network
- minor lobe
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Classifications
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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
- G01S7/28—Details of pulse systems
- G01S7/285—Receivers
-
- 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
- G01S7/36—Means for anti-jamming, e.g. ECCM, i.e. electronic counter-counter measures
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/06—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using refracting or diffracting devices, e.g. lens
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
Abstract
A kind of broadband low minor lobe simulation multiple-beam array reconnaissance system, including broadband active aerial array, Rotman network of lenses, beam selection switchs, wideband digital receiver, signal processing unit, broadband active aerial array is the same as simulation multiple beam forming network connection, Rotman network of lenses is used to form multiple wave beams simultaneously in big instant bandwidth, simultaneously corresponding amplitude and phase weights are assigned by each width phase weighting block to aerial array, beam selection switch carries out radio frequency selection according to control command in multiple wave beams, and send wideband digital receiver by signals selected, data of the digital receiver parallel processing from multiple wave beams and frequency range, and to sending signal processing unit after forming radar pulse describing word after data progress parameter measurement, signal processing unit carries out processing to signal and forms radar describing word.The advantage of the invention is that：Realize high system sensitivity, the covering of wide frequency domain, the covering of wide spatial domain, the flexible dispatching of wave beam and preferable complex electromagnetic environment adaptability.
Description
Technical field
The present invention relates to radar ew reconnaissance technology, more particularly to a kind of broadband low minor lobe simulation multiple-beam array scouts system
System.
Background technology
With the development of Radar Technology, new requirement also proposed to radar ew reconnaissance equipment.To cope with New System thunder
Up to threats such as Sidelobe, big bandwidth, multiple targets, it is sensitive that the radar EW of New System must also be provided simultaneously with high system
Degree, the covering of wide frequency domain, wide spatial domain covering power.Array reconnaissance system is more due to that can be formed simultaneously simultaneously in multiple angles
A high-gain wave beam can have higher system sensitivity and wide spatial domain covering power, thus in recent years in New System electricity
It is increasingly taken seriously in the development of sub- counterreconnaissance equipment.
Traditional array system based on phase shifter system, can only be in phase due to being limited by the array aperture transition time
To working under narrow signal bandwidth, digital array system is limited by digital collection device and digital processing capabilities etc.,
Bandwidth of operation is also limited, secondary although the array system bandwidth of operation using Rotman lens technologies gets a promotion
Valve level is high, and complex electromagnetic environment adaptability is poor.This is just needed to find new thinking to break through the bandwidth bottleneck of array system,
Solve application problem of the array technique in radar ew reconnaissance equipment.
Invention content
Technical problem to be solved by the present invention lies in provide a kind of broadband low minor lobe simulation multiple-beam array scouting system
System is, it can be achieved that high system sensitivity, the covering of wide frequency domain, the covering of wide spatial domain, the flexible dispatching of wave beam and preferable complicated
Electromagnetic environment adaptability.
The present invention is to solve above-mentioned technical problem by the following technical programs：The broadband low minor lobe of the present invention simulates more waves
Beam array reconnaissance system, including sequentially connected broadband active aerial array, Rotman network of lenses, beam selection switch are wide
Band digital receiver, signal processing unit, broadband active aerial array input terminal are described with simulation multiple beam forming network connection
Rotman network of lenses is used to form multiple wave beams simultaneously in big instant bandwidth, while passing through each width phase to aerial array
Weighting block assigns corresponding amplitude weights (the Taylor's amplitude power for inhibiting secondary lobe) (improves the phase of phase equalization with phase weights
Position power), to improve Wave beam forming quality, inhibit minor level, the beam selection switch is according to control command in multiple wave beams
Middle progress radio frequency selection, and send wideband digital receiver, digital receiver parallel processing by radio-frequency cable by signals selected
From the data of multiple wave beams and frequency range, and radar pulse describing word (PDW) is formed after carrying out parameter measurement to data, passes through high speed
Optical fiber send signal processing unit, signal processing unit to carry out processing to signal and form radar describing word (RDW).
Wherein, the broadband active aerial array is made of one group of alignment source and antenna frame, and passes through one group of radio frequency electrical
Cable is with simulation multiple beam forming network connection, and the basic component units of broadband active aerial array are alignment source, and antenna is inserted into alignment source
In frame, and precision is assembled.
Optimization, each alignment source carries out Integration Design, is integrated with n antenna element, pitching synthesis network, low noise
Acoustic amplifier, phase shifter, width phase weighting block, the output end of n antenna element synthesize network by pitching and are connected to low noise
Amplifier, low-noise amplifier, phase shifter, width phase weighting block are sequentially connected.
The wideband digital receiver by processing different beams, different frequency range multiple digital receiver parallel-expansion groups
At.
The signal processing unit includes direction finding module, preprocessing module, sorting module, and direction finding module is completed to believe target
The measurement of bugle degree, preprocessing module complete the pretreatment of multi-beam, multi-band signal, and sorting module is completed at the sorting of signal
Reason forms radar describing word (RDW).
Broadband low minor lobe simulation multiple-beam array reconnaissance system further includes comprehensive aobvious control, and radar describing word is sent to comprehensive aobvious
Control is shown.
The present invention has the following advantages compared with prior art：
(1) in wideband array reconnaissance system, broadband active day is realized using based on the Rotman lens technologies being really delayed
The Wave beam forming in linear array face evades limitation of the phase shifter system to aerial array aperture fill time, realizes the broadband of high-gain
Simultaneous multiple beams are formed.
(2) Rotman lens technologies are combined with active matrix technology, pass through the low-noise amplifier in active array
The power loss brought in compensation Wave beam forming, solves the noise coefficient deterioration problem that Rotman lens technologies are brought.
(3) Rotman lens technologies are combined with width phase weighting technique, the integrated broadband numerical control phase shift in active array
Device and broadband numerical-control attenuator, the phase on the one hand improving Rotman lens difference interchannels by broadband digital phase shifter are missed
On the other hand difference assigns channel Taylor's weights by numerical-control attenuator, and then reduces system minor level, solve Rotman lens
The high problem of minor level improves reconnaissance system anti-interference ability.
(4) using alignment source as the basic unit of composition active antenna front, alignment source can be carried out according to use demand
With extension to constitute the antenna array of different scales, the maintenanceability of antenna array and flexibility also greatly improve for reconstruct.
(5) RF front-end part of traditional discrete (low-noise amplifier, width phase control etc.) and passive antenna sections (are closed
Road device, antenna element) it is integrated, the basic unit (alignment source) of antenna array is constituted, the integrated level of antenna is improved.
(6) the multiple reception wave beams of multiple wideband digital receiver parallel processings are used, data pass through optical fiber by treated
It send signal processing to carry out direction finding, pretreatment and sorting, has expanded the spatial domain covering power of system.
(7) multiple multiple frequency ranges of wideband digital receiver parallel processing are used, data are delivered letters by optical fiber by treated
Number processing is pre-processed and is sorted, and the frequency domain covering power of system has been expanded.
Description of the drawings
Fig. 1 is that the broadband low minor lobe of the embodiment of the present invention simulates the structural schematic diagram of multiple-beam array reconnaissance system.
Fig. 2 is the structural schematic diagram of expansible active antenna front.
Fig. 3 is the structural schematic diagram in integrated alignment source.
Fig. 4 is Rotman lens designs domain used in the present invention.
Fig. 5 is the Wave beam forming functional block diagram of the Rotman lens combination active arrays of the present invention.
Fig. 6 is the multi-beam directional diagram by Rotman lens forming when not taking treatment measures.
Fig. 7 is the multi-beam directional diagram by Rotman lens forming when width being taken mutually to weight measure.
Fig. 8 is the structural schematic diagram of broadband receiver.
Specific implementation mode
It elaborates below to the embodiment of the present invention, the present embodiment is carried out lower based on the technical solution of the present invention
Implement, gives detailed embodiment and specific operating process, but protection scope of the present invention is not limited to following implementation
Example.
Core of the invention thought is：Rotman lens technologies are combined with broadband active array technique, using width phase
The Sidelobe simultaneous multiple beams that weighting technique realizes wideband array reconnaissance system are formed, and realize high system sensitivity, wide
Frequency domain covers, the covering of wide spatial domain, the flexible dispatching of wave beam and preferable complex electromagnetic environment adaptability.
As shown in Figure 1, the broadband low minor lobe simulation multiple-beam array reconnaissance system of the embodiment of the present invention includes having 16
The active antenna front in alignment source can be formed simultaneously the 16 of 16 wave beams to enter, the 16 Rotman network of lenses gone out, to 16 wave beams
16 extracted select 4 beam selections to switch, 4 road simultaneous wideband digital receivers and 1 signal processing unit.In addition, having
During body is implemented, the number of unit of active antenna array, the input of Rotman network of lenses, output port number are expansible.
The broadband active aerial array as shown in Fig. 2, aerial array is made of 16 alignment sources and an antenna frame,
16 alignment sources are sequentially inserted into antenna frame, and it is assembled to protect precision.Program advantage is can be according to use demand pair
Alignment source is reconstructed with extension to constitute the antenna array of different scales, and the maintenanceability of antenna array and flexibility are also significantly
It improves.
The alignment source is the basic component units of broadband active aerial array, and structure is as shown in Figure 3.Alignment source carries out
Integration Design, each alignment source is integrated with n antenna element, n close 1 pitching synthesis network, low-noise amplifier,
Width phase weighting block, the n antenna element, a n close 1 pitching synthesis network, low-noise amplifier, width phase weighting block
Sequentially it is connected.Width phase weighting block includes digital phase shifter, numerical-control attenuator.Program advantage is the radio frequency of traditional discrete
Fore-end (low-noise amplifier, width phase control etc.) is integrated with passive antenna sections, constitutes the basic of antenna array
Unit (alignment source), improves the integrated level of antenna.
Described 16 enter, the design layout of the 16 Rotman lens gone out as shown in figure 4, structure type use micro-strip plate form,
Size is 253mm (length) × 240mm (width) × 44mm (thickness).Go out system into 16 tunnels using 16 roads, 16 are formed simultaneously in orientation
A wave beam, spatial domain covering is up to 90 °.
The Wave beam forming functional block diagram of the Rotman lens combination active array is as shown in Figure 5.In the active array
Alignment source be integrated with No. 1 low-noise amplifier, 1 road width phase weighting block, thus each input port of Rotman lens
It is corresponding with low-noise amplifier, digital phase shifter, numerical-control attenuator.One of advantage of the program is each of Rotman lens
Input port is corresponding with low-noise amplifier, can compensate for the power loss that Rotman lens are brought in Wave beam forming, solves
The noise coefficient deterioration problem that Rotman lens technologies are brought.The two of the advantage of the program are each input of Rotman lens
Port corresponds to broadband digital phase shifter and broadband numerical-control attenuator, on the one hand can be assigned and be corrected by broadband digital phase shifter
The phase error of Rotman lens difference interchannels improves Wave beam forming quality, on the other hand can be assigned by numerical-control attenuator
Channel Taylor's amplitude weights reduce Wave beam forming minor level, solve the problems, such as that Rotman lens minor levels are high, improve and scout
System rejection to disturbance ability.
The effect combination attached drawing 6,7 of Wave beam forming in the present invention is illustrated.Fig. 6 is tradition based on Rotman lens
Wave beam test result (test frequency 10GHz), Fig. 7 are using the present invention to channel amplitude parameter imparting -30dB Taylor's amplitudes
The wave beam test result (test frequency 10GHz) obtained after weights, it is seen that the present invention can get lower secondary lobe.
The beam selection switch extracts 4 tunnels from 16 wave beams and is handled in turn, and then realizes the search of wave beam, takes out
The 4 road signals taken send 4 road wideband digital receivers.
The wideband digital receiver as shown in figure 8, for simultaneously handle RF switch selection 4 input wave beams, share 4
A wideband digital receiver participation processing, thus the instantaneous covering power in spatial domain expands to 4 wave beams by 5.6 ° of single wave beam
22.4°.And each wideband digital receiver is by 4 frequency conversion receiving channels, 4 digital receiver compositions, each digital received
The processing capacity of machine is 1GHz.When input radio frequency signal frequency range is 4-8GHz, first via frequency conversion receiving channel connects with number
Receipts machine handles the signal of 4-5GHz, and the second tunnel frequency conversion receiving channel handles 5-6GHz radiofrequency signals, third road with digital receiver
Frequency conversion receiving channel handles 6-7GHz radiofrequency signals with digital receiver, and the 4th tunnel frequency conversion receiving channel is handled with digital receiver
7-8GHz radiofrequency signals can instantaneously handle 4-8GHz signals by above-mentioned splicing, and the instantaneous covering power of frequency domain is by individually receiving
The 1GHz of machine expands to 4GHz.The advantage of middle width strip digital receiver scheme of the present invention is parallel by wideband digital receiver
Multiple wave beams and frequency range are handled, the spatial domain covering power of system has on the one hand been expanded, the frequency domain on the other hand having expanded system covers
Lid ability.
After the data of the digital receiver parallel processing from multiple wave beams and frequency range, participates in part signal and handle operation
(forming radar pulse describing word after carrying out parameter measurement to data), and radar pulse describing word is passed through into the high speed fibre number of delivering letters
Processing.
Signal processing is by direction finding module, preprocessing module, sorting module composition.Direction finding module is completed to echo signal angle
Measurement, preprocessing module complete multi-beam, multi-band signal pretreatment, sorting module complete signal sorting process formed
Radar describing word (RDW), and comprehensive aobvious control is sent to be shown.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement etc., should all be included in the protection scope of the present invention made by within refreshing and principle.
Claims (10)
1. a kind of broadband low minor lobe simulates multiple-beam array reconnaissance system, which is characterized in that including sequentially connected broadband active
Aerial array, Rotman network of lenses, beam selection switch, wideband digital receiver, signal processing unit, broadband active antenna
Array input terminal is with simulation multiple beam forming network connection, and the Rotman network of lenses in big instant bandwidth for forming simultaneously
Multiple wave beams, while corresponding amplitude weights and phase weights are assigned by each width phase weighting block to aerial array, it is described
Beam selection switch carries out radio frequency selection according to control command in multiple wave beams, and send wideband digital to receive by signals selected
Machine, data of the digital receiver parallel processing from multiple wave beams and frequency range, and form radar after carrying out parameter measurement to data
Signal processing unit, signal processing unit is sent to carry out processing to signal and form radar describing word after pulse descriptive word.
2. broadband low minor lobe according to claim 1 simulates multiple-beam array reconnaissance system, which is characterized in that the broadband
Active antenna array is made of one group of alignment source and antenna frame, and is connected with simulation multiple beam forming network by one group of radio-frequency cable
It connects, the basic component units of broadband active aerial array are alignment source, and alignment source is inserted into antenna frame.
3. broadband low minor lobe according to claim 2 simulates multiple-beam array reconnaissance system, which is characterized in that each alignment
Source carries out Integration Design, and the pitching synthesis network, low-noise amplifier, width that n antenna element, a n close 1 mutually weight mould
Block, width phase weighting block include digital phase shifter, and numerical-control attenuator, the n antenna element, a n close 1 pitching polymer fabric
Network, low-noise amplifier, width phase weighting block are sequentially connected.
4. broadband low minor lobe according to claim 1 simulates multiple-beam array reconnaissance system, which is characterized in that the broadband
Digital receiver is made of multiple digital receiver parallel-expansions of processing different beams, different frequency range.
5. broadband low minor lobe according to claim 1 simulates multiple-beam array reconnaissance system, which is characterized in that the signal
Processing unit includes direction finding module, preprocessing module, sorting module, and direction finding module completes the measurement to echo signal angle, in advance
Processing module completes the pretreatment of multi-beam, multi-band signal, and the sorting process that sorting module completes signal forms radar description
Word.
6. broadband low minor lobe according to claim 5 simulates multiple-beam array reconnaissance system, which is characterized in that the broadband is low
Secondary lobe simulation multiple-beam array reconnaissance system further includes comprehensive aobvious control, and radar describing word is sent to comprehensive aobvious control and shown.
7. broadband low minor lobe according to claim 1 simulates multiple-beam array reconnaissance system, which is characterized in that the broadband
Sidelobe simulation multiple-beam array reconnaissance system includes the active antenna front with 16 alignment sources, can be formed simultaneously 16 waves
The 16 of beam enter, the 16 Rotman network of lenses gone out, select 4 beam selections to switch to 16 wave beams are extracted 16,4 tunnels and line width
Band digital receiver and 1 signal processing unit.
8. broadband low minor lobe according to claim 7 simulates multiple-beam array reconnaissance system, which is characterized in that each alignment
Source is integrated with 8 antenna elements, the pitching of 8 conjunctions 1 synthesizes network, No. 1 low-noise amplifier, 1 road width phase weighting block.
9. broadband low minor lobe according to claim 7 simulates multiple-beam array reconnaissance system, which is characterized in that described 16
Enter, the structure type of the 16 Rotman lens gone out use micro-strip plate form, size be 253mm (length) × 240mm (width) × 44mm
(thickness).
10. the broadband low minor lobe according to claim 3 or 7 simulates multiple-beam array reconnaissance system, which is characterized in that
Each input port of Rotman lens is corresponding with low-noise amplifier, width phase weighting block.
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Cited By (11)
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| CN109164447A (en) * | 2018-09-26 | 2019-01-08 | 安徽博微长安电子有限公司 | The electromagnetic spectrum ferreting device of L-band low-altitude surveillance radar |
| CN110635233A (en) * | 2019-08-22 | 2019-12-31 | 西安电子科技大学 | Low sidelobe lens array antenna for ETC system |
| WO2020098726A1 (en) * | 2018-11-15 | 2020-05-22 | Huawei Technologies Co., Ltd. | Switchable lens antenna with integrated frequency selective structure |
| CN111277340A (en) * | 2020-01-20 | 2020-06-12 | 杭州仁牧科技有限公司 | High-power broadband emission array actual measurement system and test method thereof |
| RU2727793C1 (en) * | 2019-07-15 | 2020-07-24 | Акционерное общество "Концерн радиостроения "Вега" | Ultra-wideband multifrequency radar with active phased antenna array and reduced level of side lobes in compressed signal |
| CN111585589A (en) * | 2020-05-26 | 2020-08-25 | 上海无线电设备研究所 | Multichannel small-sized broadband receiver |
| EP3748374A1 (en) * | 2019-06-06 | 2020-12-09 | Rohde & Schwarz GmbH & Co. KG | System and method for calibrating radio frequency test chambers |
| CN112953539A (en) * | 2021-03-18 | 2021-06-11 | 西安交通大学 | Implementation method of large-scale planar array multi-beam forming system |
| CN112986921A (en) * | 2021-02-26 | 2021-06-18 | 中国船舶重工集团公司第七二三研究所 | Side lobe suppression method of broadband digital receiving array |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109164447A (en) * | 2018-09-26 | 2019-01-08 | 安徽博微长安电子有限公司 | The electromagnetic spectrum ferreting device of L-band low-altitude surveillance radar |
| CN112956079A (en) * | 2018-11-15 | 2021-06-11 | 华为技术有限公司 | Switchable lens antenna with integrated frequency selective structure |
| WO2020098726A1 (en) * | 2018-11-15 | 2020-05-22 | Huawei Technologies Co., Ltd. | Switchable lens antenna with integrated frequency selective structure |
| CN112956079B (en) * | 2018-11-15 | 2023-05-16 | 华为技术有限公司 | Switchable lens antenna with integrated frequency selective structure |
| US11515653B2 (en) | 2018-11-15 | 2022-11-29 | Huawei Technologies Co., Ltd. | Switchable lens antenna with integrated frequency selective structure |
| US10938124B2 (en) | 2018-11-15 | 2021-03-02 | Huawei Technologies Co., Ltd. | Switchable lens antenna with integrated frequency selective structure |
| EP3748374A1 (en) * | 2019-06-06 | 2020-12-09 | Rohde & Schwarz GmbH & Co. KG | System and method for calibrating radio frequency test chambers |
| RU2727793C1 (en) * | 2019-07-15 | 2020-07-24 | Акционерное общество "Концерн радиостроения "Вега" | Ultra-wideband multifrequency radar with active phased antenna array and reduced level of side lobes in compressed signal |
| CN110635233A (en) * | 2019-08-22 | 2019-12-31 | 西安电子科技大学 | Low sidelobe lens array antenna for ETC system |
| CN111277340B (en) * | 2020-01-20 | 2021-12-03 | 杭州仁牧科技有限公司 | High-power broadband emission array actual measurement system and test method thereof |
| CN111277340A (en) * | 2020-01-20 | 2020-06-12 | 杭州仁牧科技有限公司 | High-power broadband emission array actual measurement system and test method thereof |
| CN111585589A (en) * | 2020-05-26 | 2020-08-25 | 上海无线电设备研究所 | Multichannel small-sized broadband receiver |
| CN112986921A (en) * | 2021-02-26 | 2021-06-18 | 中国船舶重工集团公司第七二三研究所 | Side lobe suppression method of broadband digital receiving array |
| CN112953539A (en) * | 2021-03-18 | 2021-06-11 | 西安交通大学 | Implementation method of large-scale planar array multi-beam forming system |
| CN112953539B (en) * | 2021-03-18 | 2023-06-20 | 西安交通大学 | Implementation method of large-scale planar array multi-beam forming system |
| CN113447894A (en) * | 2021-06-24 | 2021-09-28 | 中国人民解放军国防科技大学 | Rotman lens based electromagnetic pseudoform load |
| CN113447894B (en) * | 2021-06-24 | 2022-09-20 | 中国人民解放军国防科技大学 | Rotman lens based electromagnetic pseudoform load |
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