CN112505414A - Data processing system and method based on handheld electromagnetic spectrum monitoring equipment - Google Patents
Data processing system and method based on handheld electromagnetic spectrum monitoring equipment Download PDFInfo
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- CN112505414A CN112505414A CN202011473504.7A CN202011473504A CN112505414A CN 112505414 A CN112505414 A CN 112505414A CN 202011473504 A CN202011473504 A CN 202011473504A CN 112505414 A CN112505414 A CN 112505414A
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Abstract
The invention discloses a data processing system and a method based on handheld electromagnetic spectrum monitoring equipment, wherein the data processing system based on the handheld electromagnetic spectrum monitoring equipment comprises the following steps: the system comprises an antenna unit, a broadband frequency conversion unit, a high-speed acquisition unit, a digital signal preprocessing and intelligent analysis unit, an ad hoc network unit, an equipment main control unit, a data storage unit, an external display and operation unit and a space-time calibration unit; the data processing method based on the handheld electromagnetic spectrum monitoring equipment comprises the following steps: data acquisition, data analysis, data storage and analysis result reporting. The invention has the beneficial effects that: the acquired electronic target signals with large frequency range jerks are subjected to self-adaptive extraction and compression processing, and the consumption of computing resources and storage resources is reduced; screening and identifying by adopting a multi-feature combined intelligent machine learning algorithm; meanwhile, the self-networking unit is combined, so that the cooperative communication interaction of the handheld platform is realized, and the information or signal fusion is carried out.
Description
Technical Field
The invention relates to an electromagnetic spectrum monitoring data processing system, in particular to a data processing system and method based on handheld electromagnetic spectrum monitoring equipment.
Background
With the continuous development and progress of electronic technology, radio services are increasingly widely used. Particularly in the military field, in the information battlefield, electronic and system equipment comprises a radar tracking system, a satellite communication system, a remote measuring system, a communication system, optics, astronomical navigation equipment, inertial navigation equipment, radio navigation equipment, satellite navigation equipment, sonar beacon navigation equipment and the like, and the high-density equipment forms a complex electromagnetic environment. For monitoring of complex electromagnetic environments, a complete set of electromagnetic spectrum data processing system is needed to ensure efficient and rapid processing of data collected by monitoring equipment and to achieve mutual combined operation of the equipment in the ad hoc network.
The data processing system of the existing radio monitoring equipment can only realize the data processing in the frequency range of 9KHZ-18GHZ and cannot process the acquired electronic target signal with large frequency range jump; for joint monitoring task with high precision requirement, the existing data processing system lacks the communication interaction and data fusion capability of joint networking.
Disclosure of Invention
A data processing system based on a handheld electromagnetic spectrum monitoring device, comprising: the system comprises an antenna unit, a broadband frequency conversion unit, a high-speed acquisition unit, a digital signal preprocessing and intelligent analysis unit, an ad hoc network unit, an equipment main control unit, a data storage unit, an external display and operation unit and a space-time calibration unit; wherein:
the antenna unit is connected with the broadband frequency conversion unit, the space-time calibration unit and the ad hoc network unit, and electronic target detection monitoring, ad hoc network communication and time service positioning are realized according to data transmitted or received by the antenna;
the broadband frequency conversion unit receives a broadband signal of the antenna unit, performs segmented frequency conversion, and outputs a zero intermediate frequency signal to the high-speed acquisition unit;
the high-speed acquisition unit acquires and receives a down-conversion signal to a zero intermediate frequency signal, performs analog-to-digital conversion and outputs the signal to the digital signal preprocessing and intelligent analysis unit;
the digital signal preprocessing and intelligent analysis unit receives an original digital signal, filters, screens, extracts, identifies a target, detects a direction, positions and analyzes the original digital signal step by step, and sends data to the data storage unit;
the space-time calibration unit receives the time service and the geographic coordinate information transmitted back by the antenna unit, and realizes time and space correction and marking of the investigation data;
the equipment main control unit is connected with the data storage unit, the ad hoc network unit and the external display and operation unit, so that the comprehensive control of the equipment is realized.
Preferably, the antenna unit comprises a wide frequency coverage integrated antenna, an ad hoc network communication antenna and a Beidou navigation satellite system antenna; wherein: the wide-frequency coverage integrated antenna comprises a 9 kHz-30 MHz ring antenna, a 30 MHz-6 GHz ultra-wideband antenna and a 6 GHz-40 GHz ultra-wideband antenna.
Preferably, the broadband frequency conversion unit comprises a low noise amplifier, an adjustable attenuator, a common amplifier, a mixer, an intermediate frequency adjustable attenuator, an intermediate frequency adjustable filter and an ADC chip.
Preferably, the high-speed acquisition unit consists of an ADC chip and a clock thereof.
Preferably, the digital signal preprocessing and intelligent analysis unit comprises a main control CPU, a memory, an interface circuit and a flash memory card.
Preferably, the system of the handheld electromagnetic spectrum monitoring device further comprises a battery unit and a device self-checking unit.
A data processing method based on a handheld electromagnetic spectrum monitoring device comprises the following steps:
s1: the equipment main control unit issues task requirements according to instructions of the external display and operation unit;
s2: the antenna unit collects real-time electromagnetic signals according to task requirements and distributes the collected data to the broadband frequency conversion unit, the ad hoc network unit and the space-time calibration unit;
s3: the broadband frequency conversion unit mechanically and sectionally mixes the received broadband signals to zero intermediate frequency, and outputs the signals to the high-speed acquisition unit for further processing;
s4: the high-speed acquisition unit acquires and receives the down-converted to zero intermediate frequency signal and outputs a high-speed digital signal to the digital signal preprocessing and intelligent analysis unit;
s5: the digital signal preprocessing unit filters, screens and extracts the broadband original digital data;
s6: the digital signal intelligent analysis unit receives the preprocessed digital signals and performs target recognition, direction finding, positioning and analysis;
s7: and sending the processed digital signals to a data storage unit, and uploading the analysis result to the equipment main control unit by the data storage unit.
The step S3 further includes the following sub-steps:
s31: dividing a 9KHZ-40GHZ broadband signal into 5 sections;
s32: amplifying and filtering a 9 kHz-100 MHz broadband signal, and then directly sampling;
s33: amplifying a 100 MHz-2.7 GHz broadband signal, mixing the frequency to 4GHz, and then mixing the frequency to zero intermediate frequency;
s34: amplifying the 2.5 GHz-6.2 GHz broadband signals, and mixing to zero intermediate frequency;
s35: amplifying the 6 GHz-25.2 GHz broadband signals, and mixing to zero intermediate frequency;
s36: and (4) carrying out filtering amplification on the 25 GHz-40 GHz broadband signal, and then mixing the signal to zero intermediate frequency.
The invention has the beneficial effects that: electronic target signals with large frequency range jerks collected by electromagnetic spectrum equipment are subjected to self-adaptive extraction and compression processing by utilizing a broadband frequency conversion unit, a high-speed collection unit, a digital signal preprocessing unit and an intelligent analysis unit, so that the consumption of computing resources and storage resources is reduced; screening and identifying by adopting a multi-feature combined intelligent machine learning algorithm; meanwhile, the self-networking unit is combined, so that the cooperative communication interaction of the handheld platform is realized, and the information or signal fusion is carried out.
Drawings
FIG. 1 is a block diagram of the present invention.
FIG. 2 is a flow chart of data processing according to the present invention.
FIG. 3 is a schematic diagram of the digital signal preprocessing and intelligent analysis unit according to the present invention.
Fig. 4 is a schematic diagram of the composition of the ad hoc network unit of the present invention.
Fig. 5 is a block diagram of the power supply unit design of the present invention.
Detailed Description
In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings.
As shown in fig. 1, a data processing system based on a handheld electromagnetic spectrum monitoring device includes: the system comprises an antenna unit, a broadband frequency conversion unit, a high-speed acquisition unit, a digital signal preprocessing and intelligent analysis unit, an ad hoc network unit, an equipment main control unit, a data storage unit, an external display and operation unit and a space-time calibration unit; wherein:
the antenna unit is connected with the broadband frequency conversion unit, the space-time calibration unit and the ad hoc network unit, and electronic target detection monitoring, ad hoc network communication and time service positioning are realized according to data transmitted or received by the antenna;
the broadband frequency conversion unit receives a broadband signal of the antenna unit, performs segmented frequency conversion, and outputs a zero intermediate frequency signal to the high-speed acquisition unit;
the high-speed acquisition unit acquires and receives a down-conversion signal to a zero intermediate frequency signal, performs analog-to-digital conversion and outputs the signal to the digital signal preprocessing and intelligent analysis unit;
the digital signal preprocessing and intelligent analysis unit receives an original digital signal, filters, screens, extracts, identifies a target, detects a direction, positions and analyzes the original digital signal step by step, and sends data to the data storage unit;
the space-time calibration unit receives the time service and the geographic coordinate information transmitted back by the antenna unit, and realizes time and space correction and marking of the investigation data;
the equipment main control unit is connected with the data storage unit, the ad hoc network unit and the external display and operation unit, so that the comprehensive control of the equipment is realized.
It is to be understood that the antenna unit comprises a wide frequency coverage integrated antenna, an ad hoc network communication antenna and a Beidou navigation satellite system antenna; wherein: the wide-frequency coverage integrated antenna comprises a 9 kHz-30 MHz ring antenna, a 30 MHz-6 GHz ultra-wideband antenna and a 6 GHz-40 GHz ultra-wideband antenna.
It is understood that the broadband frequency conversion unit contains a low noise amplifier, an adjustable attenuator, a common amplifier, a mixer, an intermediate frequency adjustable attenuator, an intermediate frequency adjustable filter and an ADC chip.
It should be noted that, the wideband frequency conversion unit adopts a zero intermediate frequency scheme, and a receiving link is sensitive to even nonlinear distortion; the receiving link has local oscillator leakage, so that direct current offset is generated, and therefore, a direct current offset circuit needs to be added behind the mixer to balance the influence caused by the local oscillator leakage and the receiving link is very sensitive to I/Q imbalance.
It is to be understood that the high-speed acquisition unit is composed of an ADC chip and its clock.
It should be noted that the ADC chip is a dual channel, 14-bit analog-to-digital converter with a sampling rate up to 250 MSPS.
It should be understood that the digital signal preprocessing and intelligent analysis unit includes a main control CPU, a memory, an interface circuit and a flash memory card.
It should be noted that the digital signal preprocessing and intelligent analysis unit adopts a chip of model ZU6CG in the Zynq UltraScale + series of Xilinx corporation.
It is to be understood that the system of the handheld electromagnetic spectrum monitoring device further comprises a battery unit and a device self-test unit.
The external display and control unit consists of an industrial high-definition display screen, a capacitive touch screen and a keyboard, wherein the industrial display screen is an AA070MC01 display screen, has the resolution of 800 multiplied by 480 and 262k true color, and can meet the requirement of information display of common frequency spectrum, signal characteristics and the like; the capacitive touch screen is a ZCC-3282 capacitive touch screen, and a standard IIC interface is provided to be connected with the main control chip.
As shown in fig. 2, a data processing method based on a handheld electromagnetic spectrum monitoring device includes the following steps:
s1: the equipment main control unit issues task requirements according to instructions of the external display and operation unit;
s2: the antenna unit collects real-time electromagnetic signals according to task requirements and distributes the collected data to the broadband frequency conversion unit, the ad hoc network unit and the space-time calibration unit;
s3: the broadband frequency conversion unit mechanically and sectionally mixes the received broadband signals to zero intermediate frequency, and outputs the signals to the high-speed acquisition unit for further processing;
s4: the high-speed acquisition unit acquires and receives the down-converted to zero intermediate frequency signal and outputs a high-speed digital signal to the digital signal preprocessing and intelligent analysis unit;
s5: the digital signal preprocessing unit filters, screens and extracts the broadband original digital data;
s6: the digital signal intelligent analysis unit receives the preprocessed digital signals and performs target recognition, direction finding, positioning and analysis;
s7: and sending the processed digital signals to a data storage unit, and uploading the analysis result to the equipment main control unit by the data storage unit.
The step S3 includes the following sub-steps:
s31: dividing a 9KHZ-40GHZ broadband signal into 5 sections;
s32: amplifying and filtering a 9 kHz-100 MHz broadband signal, and then directly sampling;
s33: amplifying a 100 MHz-2.7 GHz broadband signal, mixing the frequency to 4GHz, and then mixing the frequency to zero intermediate frequency;
s34: amplifying the 2.5 GHz-6.2 GHz broadband signals, and mixing to zero intermediate frequency;
s35: amplifying the 6 GHz-25.2 GHz broadband signals, and mixing the amplified signals to zero intermediate frequency;
s36: and (4) carrying out filtering amplification on the 25 GHz-40 GHz broadband signal, and then mixing the signal to zero intermediate frequency.
As shown in fig. 3, the digital signal preprocessing and intelligent analysis unit includes Zynq UltraScale + ZU6CG, 1GB DDR, QSPI Flash, TF card, EEPROM and interface circuit; wherein:
the Zynq UltraScale + ZU6CG provides display control, real-time intelligent analysis, monitoring signal preprocessing and ad hoc network communication signal processing;
the 1GB DDR is an operating system memory;
the QSPI Flash storage ZU6CG starts loading files;
the TF card provides an extended storage space;
the EEPROM provides a system information storage space;
the interface circuit provides a gigabit Ethernet interface, a USB 2.0, a serial port and a GPIO interface.
As shown in fig. 4, the ad hoc network unit realizes an integrated design of wireless communication and radio monitoring functions based on FPGA resources of the digital signal preprocessing and intelligent analysis unit and an ARM core for real-time processing, and can reduce the volume and efficacy of the system.
As shown in FIG. 5, the terminal power supply provides 10-32V DC power through an external connector, and the terminal power supply is converted into 12V DC power through an isolation power supply and then converted into other required voltages through the on-board DC-DC and the LDO. And meanwhile, the battery is subjected to charge and discharge management and power supply circuit switching through the battery management circuit.
Claims (8)
1. A data processing system based on a handheld electromagnetic spectrum monitoring device, comprising: the system comprises an antenna unit, a broadband frequency conversion unit, a high-speed acquisition unit, a digital signal preprocessing and intelligent analysis unit, an ad hoc network unit, an equipment main control unit, a data storage unit, an external display and operation unit and a space-time calibration unit; wherein:
the antenna unit is connected with the broadband frequency conversion unit, the space-time calibration unit and the ad hoc network unit, and electronic target detection monitoring, ad hoc network communication and time service positioning are realized according to data transmitted or received by the antenna;
the broadband frequency conversion unit receives a broadband signal of the antenna unit, performs segmented frequency conversion, and outputs a zero intermediate frequency signal to the high-speed acquisition unit;
the high-speed acquisition unit acquires and receives a down-conversion signal to a zero intermediate frequency signal, performs analog-to-digital conversion and outputs the signal to the digital signal preprocessing and intelligent analysis unit;
the digital signal preprocessing and intelligent analysis unit receives an original digital signal, filters, screens, extracts, identifies a target, detects a direction, positions and analyzes the original digital signal step by step, and stores data into the data storage unit;
the space-time calibration unit receives the time service and the geographic coordinate information transmitted back by the antenna unit, and realizes time and space correction and marking of the investigation data;
the equipment main control unit is connected with the data storage unit, the ad hoc network unit and the external display and operation unit, so that the comprehensive control of the equipment is realized.
2. The data processing system based on the handheld electromagnetic spectrum monitoring device as claimed in claim 1, wherein the antenna unit comprises a wide frequency coverage integrated antenna, an ad hoc network communication antenna and a Beidou navigation satellite system antenna; wherein: the wide-frequency coverage integrated antenna comprises a 9 kHz-30 MHz ring antenna, a 30 MHz-6 GHz ultra-wideband antenna and a 6 GHz-40 GHz ultra-wideband antenna.
3. The data processing system of claim 1, wherein the broadband frequency conversion unit comprises a low noise amplifier, an adjustable attenuator, a normal amplifier, a mixer, an intermediate frequency adjustable attenuator, an intermediate frequency adjustable filter, and an ADC chip.
4. The data processing system based on the handheld electromagnetic spectrum monitoring device as claimed in claim 1, wherein the high speed acquisition unit is composed of an ADC chip and its clock.
5. The hand-held electromagnetic spectrum monitoring device-based data processing system of claim 1, wherein the digital signal pre-processing and intelligent analysis unit comprises a master CPU, a memory, an interface circuit, and a flash memory card.
6. The data processing system based on the handheld electromagnetic spectrum monitoring device as claimed in claim 1, wherein the data processing system of the handheld electromagnetic spectrum monitoring device further comprises a battery unit and a device self-test unit.
7. A data processing method based on a handheld electromagnetic spectrum monitoring device is characterized by comprising the following steps:
s1: the equipment main control unit issues task requirements according to instructions of the external display and operation unit;
s2: the antenna unit collects real-time electromagnetic signals according to task requirements and distributes the collected data to the broadband frequency conversion unit, the ad hoc network unit and the space-time calibration unit;
s3: the broadband frequency conversion unit mechanically and sectionally mixes the received broadband signals to zero intermediate frequency, and outputs the signals to the high-speed acquisition unit for further processing;
s4: the high-speed acquisition unit acquires and receives the down-converted to zero intermediate frequency signal and outputs a high-speed digital signal to the digital signal preprocessing and intelligent analysis unit;
s5: the digital signal preprocessing unit filters, screens and extracts the broadband original digital data;
s6: the digital signal intelligent analysis unit receives the preprocessed digital signals and performs target recognition, direction finding, positioning and analysis;
s7: and sending the processed digital signals to a data storage unit, and uploading the analysis result to the equipment main control unit by the data storage unit.
8. The data processing method based on the handheld electromagnetic spectrum monitoring device as claimed in claim 7, wherein the step S3 includes the following sub-steps:
s31: dividing a 9KHZ-40GHZ broadband signal into 5 sections;
s32: amplifying and filtering a 9 kHz-100 MHz broadband signal, and then directly sampling;
s33: amplifying a 100 MHz-2.7 GHz broadband signal, mixing the frequency to 4GHz, and then mixing the frequency to zero intermediate frequency;
s34: amplifying the 2.5 GHz-6.2 GHz broadband signals, and mixing to zero intermediate frequency;
s35: amplifying the 6 GHz-25.2 GHz broadband signal, and mixing the amplified signal to zero intermediate frequency;
s36: and after filtering and amplifying the 25 GHz-40 GHz broadband signals, mixing the signals to zero intermediate frequency.
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| CN202011473504.7A CN112505414B (en) | 2020-12-15 | Data processing system and method based on handheld electromagnetic spectrum monitoring equipment |
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| CN202011473504.7A CN112505414B (en) | 2020-12-15 | Data processing system and method based on handheld electromagnetic spectrum monitoring equipment |
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