CN216451372U - Universal ultra-short wave detection and control platform framework - Google Patents
Universal ultra-short wave detection and control platform framework Download PDFInfo
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Abstract
The utility model discloses an ultrashort wave universal monitoring and controlling platform framework, which comprises 1 to 10 antennas for receiving different frequency bands/different directions/different positions, a radio frequency amplification distribution switching module, a down-conversion module, an intermediate frequency digital switching processing module, a network switching module and a control and information processing module which are connected in sequence. Typical ultra-short wave signal broadband reconnaissance, direction finding and storage are integrated with ultra-short wave signal narrowband analysis, identification and demodulation, various reconnaissance and control operations are completed on one platform, broadband and narrowband combination, multi-mode processing and multi-service cooperation are achieved, the size and weight of equipment are greatly reduced, and meanwhile the flexibility and guarantee efficiency of use are greatly improved.
Description
Technical Field
The utility model relates to the technical field of ultra-short wave reconnaissance and monitoring, in particular to an ultra-short wave universal reconnaissance platform framework.
Background
An ultra-short wave universal detection and control platform framework is an integrated system framework for realizing the services of ultra-short wave frequency band communication, interception, discovery, analysis and identification, direction finding and positioning, interpretation and reduction of navigation and measurement and control signals, target evidence judgment and the like, and supports the interception and extraction of a plurality of information elements of electromagnetic spectrum in electronic warfare, signal warfare and radio monitoring. Because wireless communication, navigation and detection are widely applied to various aspects of battlefields and social activities, the electromagnetic environment is increasingly complex and changeable, the signal situation is difficult to quickly and accurately obtain by means of single reconnaissance, direction finding, acquisition, analysis, identification and demodulation means, and the general reconnaissance platform framework technology provides an integrated technical support from equipment to a system for multiple services and multiple modes. In the fields of battlefield electronic warfare, signal warfare and radio monitoring, two methods are mainly adopted at present for realizing the detection and control integration: firstly, utilizing independent broadband and narrowband receiving equipment and processing equipment to carry out fusion processing and guide control operation on the basis of information provided by the independent equipment, thereby realizing multi-service and multi-mode integrated application at the system level; and secondly, a Software Defined Radio (SDR) structure is adopted, more processing is converted from hardware implementation into a software function, the unification of hardware platforms of the same type of equipment for reconnaissance, direction finding, acquisition, analysis, identification and demodulation is achieved, and the multi-mode and system-level multi-service integrated application of single-means equipment is realized. The first disadvantage is four aspects: 1. the system has various equipment types, large volume and heavy weight; 2. the cost is high; 3. the device is difficult to use on a motor-driven platform, an aerial platform and an offshore platform; 4. the time efficiency of the cooperation of each service is low. The second disadvantage is three aspects: 1. the system has more types of equipment and larger volume and weight; 2. the use of a motorized platform, an aerial platform and an offshore platform is inconvenient; 3. the time efficiency of the cooperation of each service is lower. The existing ultrashort wave signal detection and control equipment completes detection, direction finding, acquisition, analysis, identification and demodulation services by adopting independent equipment according to different systems of broadband and narrowband, has multiple equipment types, large volume and high cost, needs more operators and is difficult to guarantee, and the volume and the weight are very large constraint conditions particularly under the condition of needing to be carried by manpower, carried by a vehicle or carried by a ship.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems, the utility model provides an ultrashort wave universal detection and control platform framework, which integrates different modes and multiple services of ultrashort wave signal detection and control equipment to construct an ultrashort wave universal detection and control platform framework, so that the types of equipment are reduced, the volume and the weight are reduced, the cost is reduced, and the ultrashort wave universal detection and control platform framework is convenient to use on a motor, an aircraft or a ship.
The utility model adopts the following technical scheme: an ultrashort wave universal monitoring and control platform framework is characterized by comprising 1 to 10 antennas for receiving different frequency bands/different directions/different positions, a radio frequency amplification distribution switching module, a down-conversion module for flexibly combining and receiving different bandwidths of 20MHz/40MHz/60MHz/120MHz, an intermediate frequency digital switching processing module, a network switching module and a control and information processing module which are sequentially connected.
Preferably, the radio frequency amplification distribution switching module comprises an LNA, a power divider and a switch, and is controlled by a CAN bus or an RJ45 or an RS232 or an RS422 or an RS 85. And dynamically distributing electromagnetic wave signals induced by the multiple pairs of antennas to a down-conversion module through low-noise amplification and power division and through a selector switch according to the processing requirements of the monitoring service.
Preferably, the down-conversion module comprises a preselector group, an LNA group, a mixer, a filter group and a switch, so as to meet the processing requirements of different bandwidths of a broadband and a narrowband and realize the reconstruction of each unit in the module.
Preferably, the intermediate frequency digital exchange processing module includes an intermediate frequency digital module, a digital intermediate frequency distribution exchange module, and a digital signal processing module, which are connected in sequence. A 3-stage switching module: the radio frequency amplification distribution switching module, the digital intermediate frequency distribution switching module and the network switching module realize module level reconstruction by controlling the transmission of intercepted signals in different modules, and the signals are induced to the control and information processing module from antenna electromagnetic waves and divided into 4 sections: 1. an antenna; 2. the down-conversion module and the intermediate frequency digitization module; 3. a digital signal processing module; 4. and the control and information processing module.
Preferably, the intermediate frequency digitizing module includes a signal conditioning and an a/D converter, and the signal conditioning is used to perform measures such as filtering, jitter elimination, linearization compensation, isolation protection and the like on the analog signal, and then the analog signal is input to the a/D converter and converted into a digital signal.
Preferably, the down-conversion module and the intermediate frequency digitization module are connected with a local oscillator clock distribution module. The local oscillator clock distribution module is used for distributing local oscillator signals of each down-conversion module, each intermediate frequency digitization module is used for sampling clocks, and meanwhile, local oscillator phase and clock phase are adjusted and controlled, and accurate phase control is provided for detection multi-mode processing.
Preferably, the digital intermediate frequency distribution switching module comprises an FPGA and is controlled by a CAN bus or an RJ45 or an RS232 or an RS422 or an RS 85. The digital signal processing module comprises a DSP and an FPGA, complex conditions and multi-algorithm operation are distributed to the DSP for processing, high-speed, sequential logic and fixed repeated operation are distributed to the FPGA, and software algorithm reconstruction is achieved. And the DSP and the FPGA software are dynamically cooperated to implement reconnaissance, direction finding and storage processing, acquire station information and direction indicating information, implement multi-channel narrow-band variable bandwidth analysis, identification and demodulation, and acquire network station parameters, signal parameters and message information. The intermediate frequency digitization module, the digital intermediate frequency distribution module and the digital signal processing module are connected with a PCIe or CPCI or VXI or PXI standardized bus or a self-defined serial bus, and digital signals output by the intermediate frequency digitization module are dynamically distributed to the digital signal processing module according to the requirements of broadband reconnaissance, narrowband control and guard, broadband direction finding, narrowband direction finding, signal analysis, signal identification and signal demodulation.
Preferably, the network switch module is a network switch, and an ethernet protocol is adopted to realize interconnection and intercommunication of the digital signal processing module and the control and information processing module, and dynamically distribute the scout information, the direction information, the signal parameters and the message information to the control and information processing module.
Preferably, the control and information processing module comprises a computer workstation or a server, and is used for carrying out information fusion processing and controlling the receiving, processing and exchanging modules to work cooperatively.
An ultrashort wave universal detection and control platform framework comprises the following use steps:
s1, the radio frequency amplification distribution exchange module amplifies the electromagnetic wave signal induced by the antenna with low noise, divides the power and distributes the signal to the down-conversion module through the switch;
s2: the local oscillator clock distribution module distributes local oscillator signals of each down-conversion module, and the down-conversion module performs frequency conversion on the signals and then transmits the signals to the intermediate frequency digitization module;
s3: the local oscillator clock distribution module distributes the sampling clock of each intermediate frequency digitization module, the intermediate frequency digitization module converts the signals into digital signals, and meanwhile, the local oscillator phase and the clock phase are adjusted and controlled, so that accurate phase control is provided for detection multi-mode processing;
s4: the digital signal enters a digital intermediate frequency distribution and exchange module, and the digital signal is dynamically distributed to a digital signal processing module;
s5: the digital signal processing module completes reconnaissance, direction finding and storage processing as required, acquires station information and direction indicating information, implements multi-channel narrow-band variable bandwidth analysis, identification and demodulation, acquires network station parameters, signal parameters, message information and the like, and then performs network exchange on the processed signals;
s6, network exchange, which realizes the interconnection and intercommunication of the digital signal processing module and the control and information processing module and dynamically distributes the scout information, the direction information, the signal parameters and the message information to the control and information processing module;
s7: the control and information processing module carries out information fusion processing and controls the receiving, processing and exchanging modules to work cooperatively.
The utility model has the beneficial effects that: typical ultra-short wave signal broadband reconnaissance, direction finding and storage are integrated with ultra-short wave signal narrowband analysis, identification and demodulation, various reconnaissance operations are completed on one platform, broadband combination, multimode processing and multi-service cooperation are realized, the size and weight of equipment are greatly reduced, and the use flexibility and guarantee efficiency are greatly improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly described below, and it is apparent that the drawings in the following description only relate to some embodiments of the present invention and are not limiting on the present invention.
FIG. 1 is a schematic diagram of the present invention;
fig. 2 is a block diagram of an example reconstruction of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the utility model without any inventive step, are within the scope of protection of the utility model.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of the terms "comprising" or "including" and the like in the present disclosure is intended to mean that the elements or items listed before the term cover the elements or items listed after the term and their equivalents, but not to exclude other elements or items. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
The utility model is further illustrated with reference to the following figures and examples.
An ultrashort wave general detection and control platform structure comprises 1 to 10 antennas for receiving different frequency bands/different directions/different positions, a radio frequency amplification distribution switching module, a down-conversion module for flexibly combining and receiving different bandwidths of 20MHz/40MHz/60MHz/120MHz, an intermediate frequency digital switching processing module, a network switching module and a control and information processing module which are connected in sequence.
The radio frequency amplification distribution switching module comprises an LNA, a power divider and a switch, and CAN bus control is selected. Electromagnetic wave signals induced by the multiple antennas are dynamically distributed to the down-conversion module through low-noise amplification and power division and through the change-over switch.
The down-conversion module comprises a preselector group, an LNA group, a mixer, a filter group and a switch, meets the processing requirements of different bandwidths of a broadband and a narrow band, and realizes the reconstruction of each unit in the module.
Preferably, the intermediate frequency digital exchange processing module includes an intermediate frequency digital module, a digital intermediate frequency distribution exchange module, and a digital signal processing module, which are connected in sequence. A 3-stage switching module: the radio frequency amplification distribution switching module, the digital intermediate frequency distribution switching module and the network switching module realize module level reconstruction by controlling the transmission of intercepted signals in different modules, and the signals are induced to the control and information processing module from antenna electromagnetic waves and divided into 4 sections: 1. an antenna; 2. the down-conversion module and the intermediate frequency digitization module; 3. a digital signal processing module; 4. and the control and information processing module.
Preferably, the intermediate frequency digitizing module includes a signal conditioning and an a/D converter, and the signal conditioning is used to perform measures such as filtering, jitter elimination, linearization compensation, isolation protection and the like on the analog signal, and then the analog signal is input to the a/D converter and converted into a digital signal.
The down-conversion module and the intermediate frequency digitization module are connected with a local oscillator clock distribution module. The local oscillator clock distribution module is used for distributing local oscillator signals of each down-conversion module, each intermediate frequency digitization module is used for sampling clocks, and meanwhile, local oscillator phase and clock phase are adjusted and controlled, and accurate phase control is provided for detection multi-mode processing.
The digital intermediate frequency distribution switching module comprises an FPGA and is controlled by a CAN bus.
The digital signal processing module comprises a DSP and an FPGA, complex conditions and multi-algorithm operation are distributed to the DSP for processing, high-speed, sequential logic and fixed repeated operation are distributed to the FPGA, and software algorithm reconstruction is achieved. And the DSP and the FPGA software are dynamically cooperated to implement reconnaissance, direction finding and storage processing, acquire station information and direction indicating information, implement multi-channel narrow-band variable bandwidth analysis, identification and demodulation, and acquire network station parameters, signal parameters and message information.
The network exchange module is a network exchanger, adopts an Ethernet protocol to realize interconnection and intercommunication of the digital signal processing module and the control and information processing module, and dynamically distributes the reconnaissance information, the direction information, the signal parameters and the message information to the control and information processing module.
The control and information processing module comprises a computer workstation or a server, carries out information fusion processing and controls the receiving, processing and exchanging modules to work cooperatively.
The intermediate frequency digitization module, the digital intermediate frequency distribution module and the digital signal processing module are connected with a PCIe standardized bus, and digital signals output by the intermediate frequency digitization module are dynamically distributed to the digital signal processing module according to the requirements of broadband reconnaissance, narrow-band control, wide-band direction finding, narrow-band direction finding, signal analysis, signal identification and signal demodulation.
An ultrashort wave universal detection and control platform framework comprises the implementation steps of:
s1, the radio frequency amplification distribution exchange module amplifies the electromagnetic wave signal induced by the antenna with low noise, divides the power and distributes the signal to the down-conversion module through the switch;
s2: the local oscillator clock distribution module distributes local oscillator signals of each down-conversion module, and the down-conversion module performs frequency conversion on the signals and then transmits the signals to the intermediate frequency digitization module;
s3: the local oscillator clock distribution module distributes the sampling clock of each intermediate frequency digitization module, the intermediate frequency digitization module converts the signals into digital signals, and meanwhile, the local oscillator phase and the clock phase are adjusted and controlled, so that accurate phase control is provided for detection multi-mode processing;
s4: the digital signal enters a digital intermediate frequency distribution and exchange module, and the digital signal is dynamically distributed to a digital signal processing module;
s5: the digital signal processing module completes reconnaissance, direction finding and storage processing as required, acquires station information and direction indicating information, implements multi-channel narrow-band variable bandwidth analysis, identification and demodulation, acquires network station parameters, signal parameters, message information and the like, and then performs network exchange on the processed signals;
s6, network exchange, which realizes the interconnection and intercommunication of the digital signal processing module and the control and information processing module and dynamically distributes the scout information, the direction information, the signal parameters and the message information to the control and information processing module;
s7: the control and information processing module carries out information fusion processing and controls the receiving, processing and exchanging modules to work cooperatively.
According to the electromagnetic spectrum situation sensed in real time, different preselector, amplifier and filter in the down-conversion module are selected to combine an optimal analog receiving channel, so that the antenna induced electromagnetic wave signals are received approximately optimally, then the broadband analog intermediate-frequency signals are subjected to digital conversion in the intermediate-frequency digital module, the digital intermediate-frequency signals can be distributed to a plurality of digital signal processing modules, digital channelization processing and extraction are completed in the FPGA by utilizing multiphase filtering, channelized data are combined according to configuration parameters to obtain 4-path/8-path/16-path/32-path/64-path narrow-band I/Q data with different bandwidths, and finally the DSP and the FPGA cooperate to complete feature analysis, parameter extraction, mode matching and demodulation reduction on each path of narrow-band signals.
In practical application, several modules can be combined into one module to simplify the structure, as shown in fig. 2, an intermediate frequency digitalization module, a digital intermediate frequency distribution switching module and a digital signal processing module are combined into a large intermediate frequency digitalization and processing module; the network exchange and the standardized bus are combined into a series standardized digital exchange control module, and a digital processing and service unit is a specific implementation of controlling the information processing module. 2 groups of 5 pairs of antennas respectively cover high and low frequency bands of the ultrashort wave frequency band, and electromagnetic wave signals received by the antennas are distributed to 10 frequency conversion modules without insertion loss through a 10-in 10-out radio frequency amplification distribution exchange module; the low-frequency band antenna corresponding to the down-conversion module selects 20MHz bandwidth, the intermediate frequency selects 70MHz, the high-frequency band antenna corresponding to the down-conversion module selects 120MHz bandwidth, and the intermediate frequency selects 140 MHz; distributing 5 paths of 70MHz analog intermediate frequency signals and 5 paths of 140MHz analog intermediate frequency signals to 10 intermediate frequency digitizing modules, wherein the 70MHz analog intermediate frequency signals are digitally converted by adopting a clock at 100MHz, and the 140MHz analog intermediate frequency signals are digitally converted by adopting a clock at 500 MHz; distributing the digital intermediate frequency signals to 10 digital signal processing modules, carrying out multiphase filtering and channel merging processing in an FPGA, detecting the amplitude of the intermediate frequency signals, controlling the gain of an amplifier in a down-conversion module, and keeping the amplitude of the intermediate frequency signals at about 80% of the maximum range; the low-frequency band signal has narrow bandwidth and high density, each module can be configured with 32 paths of narrow-band voice and 4 paths of narrow-band digital signals, the high-frequency band signal has wider bandwidth and lower signal density, 8 paths of narrow-band voice and 8 paths of narrow-band digital signals can be configured, and the narrow-band signals are cooperated by a DSP and an FPGA to realize signal intensity detection, phase detection, modulation recognition, demodulation and decoding processing.
Application scenarios: 1. the large-scale fixed ultra-short wave detection and control system is deployed on mountaintops, building highways and iron towers and is used for detecting and controlling ultra-short wave signals in a fixed area; 2. the portable ultrashort wave detection and control system is carried to a specified position by a person and a robot, and detection and control of the ultrashort wave signals in the hotspot area are carried out in a fixed-point or mobile manner; 3. the vehicle-mounted mobile ultrashort wave detection and control system is mounted on a vehicle and is conveyed to a designated position or used for carrying out detection and control on ground and air ultrashort wave signals. 4. The airborne ultrashort wave detection and control system is installed on a manned airplane, an unmanned aerial vehicle and an airship and used for carrying out detection and control on ultrashort wave signals on the ground, the air and the sea in a large area. 5. The ship-borne ultrashort wave detection and control system is installed on warships, reconnaissance ships and fishing ships and used for carrying out detection and control on ultrashort wave signals on the sea and in the air.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (9)
1. The ultra-short wave universal detection and control platform framework is characterized by comprising 1 to 10 antennas for receiving different frequency bands/different directions/different positions, a radio frequency amplification distribution exchange module, a down-conversion module, an intermediate frequency digital exchange processing module, a network exchange module and a control and information processing module which are sequentially connected.
2. The ultrashort wave universal detection and control platform architecture of claim 1, wherein the radio frequency amplification distribution switching module comprises an LNA, a power divider, a switch and a control unit.
3. The ultrashort wave universal detection and control platform architecture according to claim 1, wherein the down-conversion module comprises a preselector group, an LNA group, a mixer, a filter group, a switch and a control unit.
4. The ultrashort wave universal detection and control platform framework of claim 1, wherein the intermediate frequency digitization switching processing module comprises an intermediate frequency digitization module, a digital intermediate frequency distribution switching module and a digital signal processing module which are connected in sequence.
5. The ultrashort wave universal detection and control platform architecture of claim 4, wherein the intermediate frequency digitizing module comprises a signal conditioning and A/D converter.
6. The ultrashort wave universal detection and control platform architecture according to any one of claims 1 or 5, wherein the down-conversion module and the intermediate frequency digitization module are connected with a local oscillator clock distribution module.
7. The ultrashort wave universal detection and control platform framework of claim 4, wherein the digital intermediate frequency distribution and exchange module comprises an FPGA and a signal transceiving driver, and the digital signal processing module comprises a DSP, an FPGA and an interface.
8. The ultrashort wave universal detection and control platform architecture of claim 1, wherein the network switch module is a network switch and adopts an ethernet protocol.
9. The ultrashort wave universal detection and control platform architecture of claim 1, wherein the control and information processing module comprises a computer workstation or a server.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114124144A (en) * | 2021-12-29 | 2022-03-01 | 成都爱科特科技发展有限公司 | Ultra-short wave universal detection and control platform framework and method |
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