CN116908927A - Multi-target and large-bandwidth communication signal reconnaissance guiding device based on DBF - Google Patents
Multi-target and large-bandwidth communication signal reconnaissance guiding device based on DBF Download PDFInfo
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Abstract
The application discloses a multi-target and large-bandwidth communication signal reconnaissance guiding device based on DBF, wherein the DBF antenna comprises a 2-4 GHz antenna array and a plurality of groups of 1-2 GHz antenna arrays; each group of 1-2 GHz antenna arrays are distributed around the 2-4 GHz antenna arrays; the DBF antenna is used for simultaneously carrying out multi-beam direction finding on a plurality of channels exceeding a monitoring threshold to obtain radio frequency signals, the DBF antenna is used for receiving radio frequency signals of a plurality of targets exceeding the monitoring threshold, and the DBF antenna is used for sending the radio frequency signals to the radio frequency signal receiver; the radio frequency signal receiver is used for converting radio frequency signals into intermediate frequency signals and controlling the amplitude of the intermediate frequency signals; the AD acquisition module is used for sampling the intermediate frequency signal to obtain a digital signal and transmitting the digital signal to the DBF signal processing subsystem; the DBF signal processing subsystem carries out digital channelizing, multi-channel digital beam forming, communication parameter measurement, sorting identification and demodulation processing on the digital signals and then outputs a reconnaissance result; the system has the advantages of large bandwidth, high sensitivity and adaptability to multi-target reconnaissance guiding functions.
Description
Technical Field
The application belongs to the technical field of communication signal reconnaissance, and particularly relates to a communication multi-target signal reconnaissance guiding device based on DBF.
Background
Electronic countermeasures in complex environments play an increasingly important role in modern, future warfare, which determines the battlefield survival and combat capabilities of military equipment. The method can keep uninterrupted communication command under the complex electromagnetic environment condition of the future battlefield, directly influence the battle plan, command decision and army action of the my and is concerned with the success or failure of the battlefield.
In a test or training task, various frequency-used equipment such as communication, reactance, navigation and the like in an area use limited electromagnetic spectrum resources, and the equipment has various types, distributed deployment, various wireless communication means and frequent use, so that the complexity of the electromagnetic environment of the training area is increased, and fine electromagnetic environment monitoring equipment is required to realize reconnaissance, management, situation display and the like.
The existing electromagnetic environment reconnaissance equipment aiming at communication signals has the defects of narrow bandwidth, low sensitivity and inadaptability to multi-target reconnaissance guiding functions. Therefore, there is a need to develop a high-sensitivity and large-bandwidth communication signal reconnaissance guiding device which can adapt to multiple targets.
Disclosure of Invention
The application aims to provide a multi-target and large-bandwidth communication signal reconnaissance guiding device based on DBF, which has large bandwidth and high sensitivity and can adapt to the multi-target reconnaissance guiding function.
In order to achieve the above purpose, the technical scheme adopted by the application is as follows:
the application provides a multi-target and large-bandwidth communication signal reconnaissance guiding device based on DBF, which comprises a DBF antenna, a radio frequency signal receiver, an AD acquisition module and a DBF signal processing subsystem; the DBF antenna, the radio frequency signal receiver, the AD acquisition module and the DBF signal processing subsystem are sequentially in communication connection;
the DBF antenna comprises a 2-4 GHz antenna array and a plurality of groups of 1-2 GHz antenna arrays; each group of 1-2 GHz antenna arrays are distributed around the 2-4 GHz antenna arrays; the DBF antenna receives radio frequency signals of a plurality of targets exceeding a monitoring threshold, and the DBF antenna sends the radio frequency signals to the radio frequency signal receiver; the radio frequency signal receiver is used for converting radio frequency signals into intermediate frequency signals and controlling the amplitude of the intermediate frequency signals; the AD acquisition module is used for sampling the intermediate frequency signal to obtain a digital signal and transmitting the digital signal to the DBF signal processing subsystem; the DBF signal processing subsystem carries out digital channelizing, multi-channel digital beam forming, communication parameter measurement, sorting identification and demodulation processing on the digital signals and then outputs a reconnaissance result.
Preferably, the DBF antennas are symmetrically distributed along the transverse axis and the longitudinal axis of the 2-4 GHz antenna array.
Preferably, the 1-2 GHz antenna array is arranged as a two-dimensional array of 20×30 units; the 2-4 GHz antenna array is arranged as a two-dimensional array of 8 multiplied by 16 units.
Preferably, the DBF antenna comprises a 1-2 GHz antenna array and a 2-4 GHz antenna array; the 1-2 GHz antenna array comprises four groups of 1-2 GHz antenna subarrays, and each group of 1-2 GHz antenna subarrays consists of four irregular L-shaped subarrays; the 2-4 GHz antenna array is rectangular, and the 2-4 GHz antenna array comprises an upper subarray, a lower subarray, a left subarray and a right subarray; the four groups of 1-2 GHz antenna subarrays are spliced to form a rectangle, and the 2-4 GHz antenna array is embedded in the middle of the four groups of 1-2 GHz antenna subarrays.
Preferably, the DBF signal processing subsystem is provided with a beam forming signal processing board and a signal sorter; the beam forming signal processing board carries out digital channelizing, digital beam forming, communication parameter measurement and demodulation pretreatment on the digital signals sent by the AD acquisition module, obtains measurement results and pretreated data signals and sends the measurement results and the pretreated data signals to the signal sorting machine; the signal sorting machine sorts and identifies the data signals according to the measurement results, and outputs signal reconnaissance results; the signal sorting machine is electrically connected with the display control host, and the display control host is used for displaying a signal reconnaissance result output by the signal sorting machine.
Preferably, the system further comprises a frequency synthesizer, wherein the frequency synthesizer is used for generating point-frequency local oscillators and agile local oscillators required by radio frequency conversion and providing clock signals for the DBF signal processing subsystem.
Preferably, the output end of the display control host is electrically connected with an interference device; the interference device comprises a signal analog source, a switch gating network and a power division phase shifting network; the display control host controls a signal simulation source to generate multipath communication interference signals and background signals according to a signal reconnaissance result, and the signal simulation source, the switch gating network, the power division phase shift network and the antenna are sequentially in communication connection; the signal analog source generates an electronic interference signal or a background signal, and the electronic interference signal or the background signal is transmitted outwards through the antenna after being processed by the switch gating network and the power division phase shifting network.
The second aspect of the present application provides an engineering vehicle, comprising a vehicle body; the lifting frame is arranged on the vehicle body; a turntable is arranged on the lifting frame; the DBF antenna of the multi-target signal reconnaissance guide device of the first aspect is disposed above the turntable.
Compared with the prior art, the application has the beneficial effects that:
the DBF antenna of the application carries out simultaneous multi-beam direction finding on a plurality of channels exceeding a monitoring threshold to obtain radio frequency signals, the DBF antenna receives radio frequency signals of a plurality of targets exceeding the monitoring threshold, and the DBF antenna sends the radio frequency signals to a radio frequency signal receiver; the radio frequency signal receiver is used for converting radio frequency signals into intermediate frequency signals and controlling the amplitude of the intermediate frequency signals; the AD acquisition module is used for sampling the intermediate frequency signal to obtain a digital signal and transmitting the digital signal to the DBF signal processing subsystem; the DBF signal processing subsystem carries out digital channelizing, multi-channel digital beam forming, communication parameter measurement, sorting identification and demodulation processing on the digital signals and then outputs a reconnaissance result; the application overcomes the defects of narrow instantaneous working bandwidth and single tracking and guiding target of the current communication reconnaissance and guiding equipment, and can realize high sensitivity under the condition of instantaneous large bandwidth.
Drawings
Fig. 1 is a block diagram of a multi-target and large-bandwidth communication signal reconnaissance guiding device based on DBF according to an embodiment of the present application;
fig. 2 is a block diagram of a DBF antenna provided by the present application;
fig. 3 is a block diagram of an engineering vehicle according to a second embodiment of the present application;
FIG. 4 is a full-array-surface 1GHz directional diagram of the multi-target signal reconnaissance guiding device according to the application;
FIG. 5 is a full-array-area 1.2GHz directional diagram of the multi-target signal reconnaissance guiding device according to the application;
FIG. 6 is a full-array-area 1.4GHz directional diagram of the multi-target signal reconnaissance guiding device according to the application;
FIG. 7 is a full-array-area 1.6GHz directional diagram of the multi-target signal reconnaissance guiding device according to the application;
FIG. 8 is a full-array-area 1.8GHz directional diagram of the multi-target signal reconnaissance guiding device according to the application;
FIG. 9 is a full-array 2GHz directional diagram of a multi-target signal detection and guidance device detection in the application;
FIG. 10 is a full-array-face 2GHz pattern for 2-4 GHz antenna array investigation in the present application;
FIG. 11 is a full array face 3GHz pattern for 2-4 GHz antenna array investigation in the present application;
fig. 12 is a full-array-surface 4GHz pattern for 2-4 GHz antenna array investigation in the present application.
In the figure, a car body 1, a lifting frame 2, a 3DBF antenna and a square cabin 4 are shown.
Detailed Description
The application is further described below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present application, and are not intended to limit the scope of the present application.
Example 1
As shown in fig. 1, a multi-target, large-bandwidth communication signal reconnaissance guiding device based on DBF comprises a DBF antenna, a radio frequency signal receiver, an AD acquisition module, a DBF signal processing subsystem and a frequency synthesizer; the DBF antenna, the radio frequency signal receiver, the AD acquisition module and the DBF signal processing subsystem are sequentially in communication connection;
as shown in fig. 2, the DBF antenna comprises a 2-4 GHz antenna array and four groups of 1-2 GHz antenna arrays; each group of 1-2 GHz antenna arrays are distributed around the 2-4 GHz antenna arrays; the DBF antennas are symmetrically distributed on the transverse axis and the longitudinal axis of the 2-4 GHz antenna array at the same time; the 1-2 GHz antenna array is arranged as a two-dimensional array with 20 multiplied by 30 units; the 2-4 GHz antenna array is arranged as a two-dimensional array with 8 multiplied by 16 units; the 1-2 GHz antenna array comprises four groups of 1-2 GHz antenna subarrays, and each group of 1-2 GHz antenna subarrays consists of four irregular L-shaped subarrays; the 2-4 GHz antenna array is rectangular, and the 2-4 GHz antenna array comprises an upper subarray, a lower subarray, a left subarray and a right subarray; the four groups of 1-2 GHz antenna arrays are spliced to form a rectangle, and the 2-4 GHz antenna arrays are embedded in the middle of the four groups of 1-2 GHz antenna arrays; the implementation has the instantaneous bandwidth of 300MHz, the high-sensitivity receiving of signals can be realized through digital channelization, and in addition, the frequency domain rapid interception of the frequency band of 1 GHz-4 GHz can be realized through rapid searching.
The DBF antenna carries out simultaneous multi-beam direction finding on 16 beams exceeding a monitoring threshold to obtain radio frequency signals, so that instantaneous airspace coverage can be realized; the DBF antenna transmits radio frequency signals to a radio frequency signal receiver; the radio frequency signal receiver is used for converting the radio frequency signal into an intermediate frequency signal of 250MHz +/-150 MHz; the AD acquisition module is used for sampling the intermediate frequency signal to obtain a digital signal and transmitting the digital signal to the DBF signal processing subsystem; the DBF signal processing subsystem performs sorting identification and demodulation processing on the digital signals and then outputs a reconnaissance result; the frequency synthesizer is used for generating point-frequency local oscillators and agile local oscillators required by radio frequency conversion and providing clock signals for the DBF signal processing subsystem.
The DBF signal processing subsystem is provided with a beam forming signal processing board and a signal sorting machine; the beam forming signal processing board carries out digital channelizing, digital beam forming, communication parameter measurement and demodulation pretreatment on the digital signals sent by the AD acquisition module, obtains measurement results and pretreated data signals and sends the measurement results and the pretreated data signals to the signal sorting machine; the signal sorting machine sorts and identifies the data signals according to the measurement results, and outputs signal reconnaissance results; the signal sorting machine is electrically connected with the display control host, and the display control host is used for displaying a signal reconnaissance result output by the signal sorting machine; as shown in fig. 4 to 12, the result of signal reconnaissance for different frequencies;
the implementation has high sensitivity, thereby improving the reconnaissance capability of the system and quickly sensing the change of the communication signal; in addition, in order to improve the signal sorting and identifying capability of the system, the system dilutes and de-interleaves the intercepted signals in three dimensions of time frequency space, adapts to a complex electromagnetic environment and can provide guide information for communication interference in real time; the defect that the instantaneous working bandwidth of the current communication reconnaissance guiding equipment is narrow and the tracking guiding target is single is overcome.
The output end of the display control host is electrically connected with an interference device; the interference device comprises a signal analog source, a switch gating network and a power division phase shifting network; the display control host controls a signal simulation source to generate multipath communication interference signals and background signals according to a signal reconnaissance result, and the signal simulation source, the switch gating network, the power division phase shift network and the DBF antenna are sequentially in communication connection; the signal simulation source generates an electronic interference signal or a background signal, and the electronic interference signal or the background signal is processed by the switch gating network and the power division phase shifting network and then is transmitted outwards through the antenna; the method can simultaneously construct interference/background scenes with large bandwidth and high power aiming at multiple targets; the complex environment with different intensities and intensities of a plurality of signals can be better simulated, and the test requirements of a plurality of tested devices can be met.
The implementation can construct more real and complex countermeasure scenes, fully and comprehensively verify the performance boundary of the tested equipment, improve the performance index of the tested equipment, and simultaneously improve the operation capability and the reaction capability of an operator to complex electromagnetic environments.
Example two
As shown in fig. 3, an engineering vehicle includes a vehicle body 1; the car body 1 is provided with a lifting frame 2 and a shelter 4; the shelter 4 is used for storing articles; a turntable is arranged on the lifting frame 2; embodiment one the DBF antenna 3 of the multi-target signal reconnaissance guiding device is arranged on the turntable; through the DBF antenna 3 and the turntable, the space domain coverage of 360 degrees of azimuth and 90 degrees of pitching can be rapidly covered; the lifting frame 2 is used for lifting the DBF antenna by 5 to 7 meters, so that the influence of the ground multipath effect on the direction finding result is reduced.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The foregoing is merely a preferred embodiment of the present application, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present application, and such modifications and variations should also be regarded as being within the scope of the application.
Claims (8)
1. The multi-target and large-bandwidth communication signal reconnaissance guiding device based on the DBF is characterized by comprising a DBF antenna, a radio frequency signal receiver, an AD acquisition module and a DBF signal processing subsystem; the DBF antenna, the radio frequency signal receiver, the AD acquisition module and the DBF signal processing subsystem are sequentially in communication connection;
the DBF antenna comprises a 2-4 GHz antenna array and a plurality of groups of 1-2 GHz antenna arrays; each group of 1-2 GHz antenna arrays are distributed around the 2-4 GHz antenna arrays; the DBF antenna receives radio frequency signals of a plurality of targets exceeding a monitoring threshold, and the DBF antenna sends the radio frequency signals to the radio frequency signal receiver; the radio frequency signal receiver is used for converting radio frequency signals into intermediate frequency signals and controlling the amplitude of the intermediate frequency signals; the AD acquisition module is used for sampling the intermediate frequency signal to obtain a digital signal and transmitting the digital signal to the DBF signal processing subsystem; the DBF signal processing subsystem carries out digital channelizing, multi-channel digital beam forming, communication parameter measurement, sorting identification and demodulation processing on the digital signals and then outputs a reconnaissance result.
2. A DBF-based multi-target, large bandwidth communication signal reconnaissance guide according to claim 1, wherein the DBF antennas are symmetrically distributed with both the lateral and longitudinal axes of the 2-4 GHz antenna array.
3. The DBF-based multi-target, large bandwidth communication signal reconnaissance guide apparatus of claim 1, wherein said 1-2 GHz antenna array is arranged as a two-dimensional array of 20 x 30 elements; the 2-4 GHz antenna array is arranged as a two-dimensional array of 8 multiplied by 16 units.
4. The DBF-based multi-target, large bandwidth communication signal reconnaissance guiding apparatus according to claim 2, wherein said DBF antenna comprises two parts, a 1-2 GHz antenna array and a 2-4 GHz antenna array; the 1-2 GHz antenna array comprises four groups of 1-2 GHz antenna subarrays, and each group of 1-2 GHz antenna subarrays consists of four irregular L-shaped subarrays; the 2-4 GHz antenna array is rectangular, and the 2-4 GHz antenna array comprises an upper subarray, a lower subarray, a left subarray and a right subarray; the four groups of 1-2 GHz antenna subarrays are spliced to form a rectangle, and the 2-4 GHz antenna array is embedded in the middle of the four groups of 1-2 GHz antenna subarrays.
5. The DBF-based multi-target, large bandwidth communication signal reconnaissance guide apparatus of claim 1, wherein the DBF signal processing subsystem is provided with a beam forming signal processing board and a signal sorter; the beam forming signal processing board carries out digital channelizing, digital beam forming, communication parameter measurement and demodulation pretreatment on the digital signals sent by the AD acquisition module, obtains measurement results and pretreated data signals and sends the measurement results and the pretreated data signals to the signal sorting machine; the signal sorting machine sorts and identifies the data signals according to the measurement results, and outputs signal reconnaissance results; the signal sorting machine is electrically connected with the display control host, and the display control host is used for displaying a signal reconnaissance result output by the signal sorting machine.
6. The DBF-based multi-target, large bandwidth communication signal reconnaissance guide apparatus of claim 1, further comprising a frequency synthesizer for generating a point frequency local oscillator and a agile local oscillator required for radio frequency conversion while providing a clock signal to the DBF signal processing subsystem.
7. The DBF-based multi-target, large-bandwidth communication signal reconnaissance guiding device according to claim 1, wherein an output end of the display control host is electrically connected with an interference device; the interference device comprises a signal analog source, a switch gating network and a power division phase shifting network; the display control host controls a signal simulation source to generate multipath communication interference signals and background signals according to a signal reconnaissance result, and the signal simulation source, the switch gating network, the power division phase shift network and the antenna are sequentially in communication connection; the signal analog source generates an electronic interference signal or a background signal, and the electronic interference signal or the background signal is transmitted outwards through the antenna after being processed by the switch gating network and the power division phase shifting network.
8. An engineering vehicle includes a vehicle body; the lifting frame is arranged on the vehicle body; a turntable is arranged on the lifting frame; the DBF antenna of a multi-target signal reconnaissance guide arrangement of any of claims 1 to 7 arranged above a turntable.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN2023107700441 | 2023-06-28 | ||
| CN202310770044 | 2023-06-28 |
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| CN116908927A true CN116908927A (en) | 2023-10-20 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119052033A (en) * | 2024-10-31 | 2024-11-29 | 成都华力创通科技有限公司 | Method and system for completing self-adaptive channelizing based on user requirements |
| CN119449116A (en) * | 2024-10-18 | 2025-02-14 | 广东格林精密部件股份有限公司 | A method for parallel transmission and reception of multi-channel space division signals of digital phased array |
-
2023
- 2023-07-11 CN CN202310846710.5A patent/CN116908927A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119449116A (en) * | 2024-10-18 | 2025-02-14 | 广东格林精密部件股份有限公司 | A method for parallel transmission and reception of multi-channel space division signals of digital phased array |
| CN119052033A (en) * | 2024-10-31 | 2024-11-29 | 成都华力创通科技有限公司 | Method and system for completing self-adaptive channelizing based on user requirements |
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