CN111697977A - Ultra-wideband frequency spectrum monitoring system and method - Google Patents
Ultra-wideband frequency spectrum monitoring system and method Download PDFInfo
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- CN111697977A CN111697977A CN201910184499.9A CN201910184499A CN111697977A CN 111697977 A CN111697977 A CN 111697977A CN 201910184499 A CN201910184499 A CN 201910184499A CN 111697977 A CN111697977 A CN 111697977A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/0003—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain
- H04B1/0007—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain wherein the AD/DA conversion occurs at radiofrequency or intermediate frequency stage
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/26—Circuits for superheterodyne receivers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/10—Monitoring; Testing of transmitters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
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Abstract
The invention discloses a system and a method for monitoring ultra-wideband frequency spectrum, wherein the system comprises: the signal filtering processing module is used for receiving the first frequency band signal, filtering and sending the first frequency band signal to the zero intermediate frequency signal processing module, receiving the second frequency band signal, filtering and sending the second frequency band signal to the radio frequency direct sampling module; the zero intermediate frequency signal processing module is used for amplifying and filtering the received first frequency band signal, converting the signal into a zero intermediate frequency signal through down conversion, and outputting a digital signal to the digital signal processing module after analog-to-digital conversion; the radio frequency direct acquisition module is used for outputting a digital signal to the digital signal processing module after performing analog-to-digital conversion on the received second frequency band signal; and the digital signal processing module is used for carrying out frequency spectrum monitoring on the digital signals received from the zero intermediate frequency signal processing module and the radio frequency direct acquisition module. The invention combines zero intermediate frequency signal processing and radio frequency direct acquisition technology, replaces the traditional transceiver circuit built by using a separate component, and reduces the board distribution area and the board distribution difficulty.
Description
Technical Field
The invention relates to the technical field of wireless communication, in particular to an ultra-wideband frequency spectrum monitoring system and method.
Background
Due to the development and application of radio technology, the spectrum resource is increasingly tense, and the electromagnetic environment is more and more complex. In order to effectively utilize frequency spectrum resources, avoid mutual interference of various devices and guarantee normal work of various communication devices, ultra-wideband communication gradually draws attention of people, has great value in military and public security, can be matched with public security and military departments to monitor related objects and efficiently collect related information, and particularly has outstanding effects in the aspects of reducing the interference of anti-radiation missiles to radars, improving the response speed of an early warning mechanism, improving the precision of ballistic missiles, reducing the response time of the missiles and the like due to high frequency spectrum utilization rate and strong anti-interference of an ultra-wideband transceiver in military.
On the premise of ensuring the smoothness and confidentiality of communication, ultra-wideband communication gradually draws attention of people, and has a wide market in the aspects of high utilization rate, miniaturization, low cost, low power consumption and the like. The enhancement of the management of radio equipment is particularly important, and the design and implementation of a broadband spectrum monitoring receiver are particularly important for realizing the monitoring of the radio spectrum. In order to facilitate the manager to perform spectrum monitoring anytime and anywhere, higher requirements are made on the requirements of the power consumption and the size of the broadband spectrum monitoring receiver.
However, the existing ultra-wideband frequency spectrum monitoring transceiver covering 10-6000 MHz is a twice-conversion superheterodyne architecture link built by using discrete components, a plurality of channels need to be divided into at radio frequency and intermediate frequency parts according to different frequency bands, intermediate frequency is unified into one or two lower frequencies through a plurality of mixers and local oscillators and then processed, and due to the fact that the number of discrete components is large, the size of equipment is large, the design is excessively complicated, the power consumption of the equipment is large, the cost is high, and the requirements of miniaturization and light weight of equipment in the military field cannot be met.
Disclosure of Invention
The invention provides an ultra-wideband frequency spectrum monitoring system and a method, which solve the problems that the existing wideband frequency spectrum monitoring receiver is a super-heterodyne structure realized by discrete components, the number of devices is large, the occupied board layout area is large, and the power consumption is high.
In order to solve the technical problem, the invention provides an ultra-wideband spectrum monitoring system and a method, and the method specifically comprises the following steps:
in accordance with a first aspect of the present invention, there is provided an ultra-wideband spectrum monitoring system, the system comprising:
the signal filtering processing module is used for receiving the first frequency band signal, filtering and sending the first frequency band signal to the zero intermediate frequency signal processing module, receiving the second frequency band signal, filtering and sending the second frequency band signal to the radio frequency direct sampling module;
the zero intermediate frequency signal processing module is used for amplifying and filtering the received first frequency band signal, converting the signal into a zero intermediate frequency signal through down conversion, and outputting a digital signal to the digital signal processing module after analog-to-digital conversion;
the radio frequency direct acquisition module is used for outputting a digital signal to the digital signal processing module after performing analog-to-digital conversion on the received second frequency band signal;
and the digital signal processing module is used for carrying out frequency spectrum monitoring on the digital signals received from the zero intermediate frequency signal processing module and the radio frequency direct acquisition module.
The system combines the highly integrated zero intermediate frequency signal processing module with the radio frequency direct sampling technology, replaces a traditional transceiving circuit built by using a separation component, reduces the board distribution area and the board distribution difficulty, saves the cost, reduces the size of a receiving machine, can realize the broadband coverage of 10M-6000M, has advantages in the aspects of volume, power consumption and cost for the traditional scheme for realizing the same bandwidth, and is easy to carry and test.
In a possible embodiment, the first frequency band signal comprises a plurality of signals of different frequency bands, and the maximum frequency value of the second frequency band signal is smaller than the minimum frequency value of the first frequency band signal.
In one possible embodiment, the zero intermediate frequency signal processing module includes a transceiver circuit.
In one possible implementation, the transceiver circuit includes:
the frequency mixing module is used for mixing and down-converting the first frequency band signal into a zero intermediate frequency signal, orthogonally demodulating the zero intermediate frequency signal and outputting the signal to the analog-to-digital conversion module for sampling;
and the analog-to-digital conversion module is used for performing analog-to-digital conversion on the zero intermediate frequency signal output by the frequency mixing module and outputting the zero intermediate frequency signal to the digital signal processing module.
In one possible implementation, the transceiver circuit further includes:
the gain amplifier is used for performing gain amplification on the first frequency band signal output by the signal filtering processing module and outputting the first frequency band signal to the anti-aliasing filter;
and the anti-aliasing filter is used for filtering the amplified first frequency band signal output by the gain amplifier and outputting the filtered first frequency band signal to the frequency mixing module.
In a possible implementation, the signal filtering processing module includes:
and the switch filter bank module is used for performing out-of-band blocking and filtering on the received first frequency band signal/second frequency band signal and outputting the result to the zero intermediate frequency signal processing module/radio frequency direct acquisition module.
In a possible implementation manner, the signal filtering processing module further includes:
and the radio frequency public front-end module is used for receiving the first frequency band signal and receiving the second frequency band signal.
According to a second aspect of the invention, a method for ultra-wideband spectrum monitoring, the method comprises:
the signal filtering processing module is used for receiving the first frequency band signal/the second frequency band signal, filtering the first frequency band signal/the second frequency band signal and sending the first frequency band signal/the second frequency band signal to the zero intermediate frequency signal processing module/the radio frequency direct acquisition module;
the received first frequency band signal is amplified, filtered, down-converted into a zero intermediate frequency signal through the zero intermediate frequency signal processing module, and a digital signal is output to the digital signal processing module after analog-to-digital conversion;
the received second frequency band signal is output to a digital signal processing module after analog-to-digital conversion through the radio frequency direct acquisition module;
and carrying out frequency spectrum monitoring on the digital signals received from the zero intermediate frequency signal processing module and the radio frequency direct acquisition module through the digital signal processing module.
According to the method, the highly integrated zero intermediate frequency signal processing module and the radio frequency direct sampling technology are combined, a traditional transceiving circuit built by using a separation component is replaced, the board distribution area and the board distribution difficulty are reduced, the cost is saved, the size of a receiver is reduced, the broadband coverage is 10M-6000M, and for the traditional scheme for realizing the same bandwidth, the method has advantages in the aspects of volume, power consumption and cost and is easy to carry and test.
In a possible embodiment, the first frequency band signal comprises a plurality of signals of different frequency bands, and the maximum frequency value of the second frequency band signal is smaller than the minimum frequency value of the first frequency band signal.
In one possible embodiment, the first frequency band signal includes: 100M-6000M frequency band signals; the second frequency band signal includes: 10M-100M frequency band signals.
In a possible implementation manner, the zero intermediate frequency signal processing module amplifies and filters the received first frequency band signal, down-converts the first frequency band signal into a zero intermediate frequency signal, and outputs a digital signal to the digital signal processing module after analog-to-digital conversion, including:
the first frequency band signal is subjected to frequency mixing down-conversion to be a zero intermediate frequency signal through a frequency mixing module and then is output to an analog-to-digital conversion module for sampling;
and the zero intermediate frequency signal output by the frequency mixing module is subjected to analog-to-digital conversion through an analog-to-digital conversion module and then output to a digital signal processing module.
In a possible implementation manner, the first frequency band signal output by the signal filtering processing module is subjected to signal amplification and filtering, and then output to the analog-to-digital conversion module.
In a possible implementation manner, the signal filtering processing module receives the first frequency band signal/the second frequency band signal, and sends the first frequency band signal/the second frequency band signal to the zero intermediate frequency signal processing module/the radio frequency direct sampling module after filtering processing, including:
and outputting the received first frequency band signal/second frequency band signal to the zero intermediate frequency signal processing module/radio frequency direct acquisition module after carrying out-of-band blocking and filtering.
Compared with the prior art, the ultra-wideband frequency spectrum monitoring system and the method provided by the invention have the following advantages and beneficial effects:
the invention uses the combination of a highly integrated transceiver chip and a radio frequency direct acquisition technology to replace a traditional transceiver circuit built by using separate components, thereby reducing the board distribution area and the board distribution difficulty, saving the cost, reducing the size of a receiver, realizing the broadband coverage of 10M-6000M, having advantages in the aspects of volume, power consumption and cost for the traditional scheme of realizing the same bandwidth, and being easy to carry and test.
Drawings
Fig. 1 is a schematic structural diagram of an ultra-wideband spectrum monitoring system according to an embodiment;
fig. 2 is a schematic structural diagram of a signal filtering processing module according to an embodiment;
fig. 3 is a schematic structural diagram of a transceiver circuit according to an embodiment;
fig. 4 is a schematic structural diagram of an ultra-wideband spectrum monitoring system according to an embodiment;
fig. 5 is a flowchart illustrating an ultra-wideband spectrum monitoring method according to an embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Some of the words that appear in the text are explained below:
the character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
The application scenario described in the embodiment of the present invention is for more clearly illustrating the technical solution of the embodiment of the present invention, and does not form a limitation on the technical solution provided in the embodiment of the present invention, and it can be known by a person skilled in the art that with the occurrence of a new application scenario, the technical solution provided in the embodiment of the present invention is also applicable to similar technical problems. In the description of the present invention, the term "plurality" means two or more unless otherwise specified.
The existing ultra-wideband frequency spectrum monitoring system is mostly a twice-conversion superheterodyne architecture link built by using separation components, a plurality of channels are required to be divided into a radio frequency part and a middle frequency part according to different frequency bands, the middle frequency is unified into one or two lower frequencies to be processed through a plurality of mixers and local oscillators, the number of devices is large, the size is large, and the cost is high.
Therefore, the embodiment of the invention provides an ultra-wideband spectrum monitoring system and a method, which optimize the number of devices from the original multiple discrete devices to two main integrated chips by using a highly integrated chip, wherein the supporting frequency range of a zero intermediate frequency chip can be widened by a radio frequency direct acquisition technology, so that the application of the ultra-wideband spectrum monitoring system and the method is not limited by the current technology of the zero intermediate frequency chip.
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
An embodiment of the present invention provides an ultra-wideband spectrum monitoring system, as shown in fig. 1, including:
the signal filtering processing module 101 is configured to receive a first frequency band signal, filter the first frequency band signal, send the first frequency band signal to the zero intermediate frequency signal processing module 102, receive a second frequency band signal, filter the second frequency band signal, and send the second frequency band signal to the radio frequency direct sampling module 103;
the zero intermediate frequency signal processing module 102 is configured to amplify and filter the received first frequency band signal, convert the received first frequency band signal into a zero intermediate frequency signal by down conversion, and output a digital signal to the digital signal processing module 104 after analog-to-digital conversion;
the radio frequency direct sampling module 103 is configured to output a digital signal to the digital signal processing module 104 after performing analog-to-digital conversion on the received second frequency band signal;
the digital signal processing module 104 is configured to perform spectrum monitoring on the digital signals received from the zero intermediate frequency signal processing module 102 and the radio frequency direct sampling module 103.
Optionally, the first frequency band signal includes a plurality of signals of different frequency bands, and the maximum frequency value of the second frequency band signal is smaller than the minimum frequency value of the first frequency band signal.
In an implementation, the first frequency band signal is a frequency band range that can be processed by the zero if signal processing module 102, and includes a frequency band signal from 100MHz to 6000 MHz.
Optionally, as shown in fig. 2, the signal filtering processing module 101 includes:
the radio frequency common front end module 201 is configured to receive a first frequency band signal and receive a second frequency band signal.
In an implementation, the rf common front-end module 201 has two full-band receiving antennas, and the rf signals received by the antennas enter the switch filter bank module 202 for filtering after passing through the rf common front-end module.
Optionally, as shown in fig. 2, the signal filtering processing module 101 further includes:
and the switch filter bank module 202 is configured to perform out-of-band blocking and filtering on the received first frequency band signal/second frequency band signal, and output the result to the zero intermediate frequency signal processing module/radio frequency direct sampling module.
In implementation, the switch filter bank module 202 divides a full-band signal received from the rf common front-end module 201 into different frequency bands, and determines signals of different frequency bands to be respectively sent to the zero intermediate frequency signal processing module 102 or the rf direct sampling module 103.
As an alternative implementation, as shown in fig. 4, the signal in the first frequency band (100MHz to 6000MHz) is sent to the zero intermediate frequency signal processing module 102, and the signal in the second frequency band (10MHz to 100MHz) is sent to the rf direct sampling circuit.
Optionally, the first frequency band signal is further divided into: 100MHz to 1800MHz, 1800MHz to 2700MHz, 2700MHz to 3250MHz, 3250MHz to 4150MHz, 4150MHz to 5050MHz, 5050MHz to 6000MHz, wherein the division of the signals is not limited. The specific implementation mode can be realized by carrying out-of-band blocking and filtering on the received first frequency band signal/second frequency band signal through a single-switch filter bank and then outputting the result to the zero intermediate frequency signal processing module/radio frequency direct acquisition module; or, the received first frequency band signal/second frequency band signal is output to the zero intermediate frequency signal processing module/radio frequency direct acquisition module after being subjected to out-of-band blocking and filtering by the multi-switch filter bank.
As an alternative embodiment, the switching filter bank module 202 includes: a 100MHz to 1800MHz receive channel, an 1800MHz to 2700MHz receive channel, a 2700MHz to 3250MHz receive channel, a 3250MHz to 4150MHz receive channel, a 4150MHz to 5050MHz receive channel, a 5050MHz to 6000MHz receive channel, a 10MHz to 100MHz receive channel;
the 100MHz to 1800MHz receiving channel, the 1800MHz to 2700MHz receiving channel, the 2700MHz to 3250MHz receiving channel, the 3250MHz to 4150MHz receiving channel, the 4150MHz to 5050MHz receiving channel and the 5050MHz to 6000MHz receiving channel are connected with a zero intermediate frequency signal processing module 102, and the 10MHz to 100MHz receiving channel is connected with a radio frequency direct sampling module 103.
The 100MHz to 1800MHz receiving channel comprises a first switch filter bank, a first low noise amplifier device, a second low noise amplifier device and a first band-pass filter, the 1800MHz to 2700MHz receiving channel comprises a second switch filter bank, a third low noise amplifier device, a fourth low noise amplifier device and a second band-pass filter, the 2700MHz to 3250MHz receiving channel comprises a third switch filter bank, a fifth low noise amplifier device, a sixth low noise amplifier device and a third band-pass filter, the 3250MHz to 4150MHz receiving channel comprises a fourth switch filter bank, a seventh low noise amplifier device, an eighth low noise amplifier device and a fourth band-pass filter, the 4150MHz to 5050MHz receiving channel comprises a fifth switch filter bank, a ninth low noise amplifier device, a tenth low noise amplifier device and a fifth band-pass filter, the 5050MHz to 6000MHz receiving channel, the receiving channel from 10MHz to 100MHz comprises a seventh switch filter bank, a thirteenth low-noise amplifying device, a fourteenth low-noise amplifying device and a seventh band-pass filter.
For the receiving channels from 100MHz to 1800MHz, the signal passes through the first switch filter group to complete the filtering of out-of-band blocking, then enters the first low noise amplifier and the second low noise amplifier to amplify the signal power, and then passes through the first band pass filter to further filter the signal, and then outputs the signal to the zero intermediate frequency signal processing module 102, and for other receiving channels except for the receiving channels from 100MHz to 1800MHz, the working mode is consistent with the receiving channels from 100MHz to 1800MHz, which is not described herein.
For a receiving channel from 100MHz to 1800MHz, the signal passes through the seventh switch filter bank to complete filtering with out-of-band blocking, then enters the thirteenth low noise amplifier device and the fourteenth low noise amplifier device to amplify the signal power, passes through the seventh band pass filter to further filter the signal, and then is output to the radio frequency direct acquisition module 103.
The zero intermediate frequency signal processing module 102 is configured to amplify and filter the received first frequency band signal, convert the received first frequency band signal into a zero intermediate frequency signal by down conversion, and output a digital signal to the digital signal processing module 104 after analog-to-digital conversion;
the first frequency band signal is an analog signal.
Optionally, the zero intermediate frequency signal processing module 102 includes a transceiver circuit.
In implementation, the transceiver circuit amplifies and filters the received first frequency band signal, down-converts the first frequency band signal into a zero intermediate frequency signal, and outputs a digital signal to the digital signal processing module 104 after digital-to-analog conversion.
The first frequency band signal is a frequency band range which can be processed by the transceiver circuit.
Optionally, as shown in fig. 3, the transceiver circuit includes:
the frequency mixing module 301 is configured to down-convert the first frequency band signal into a zero intermediate frequency signal by frequency mixing and output the zero intermediate frequency signal to the analog-to-digital conversion module for sampling;
the trend of analog-to-digital conversion module development mainly shows two aspects of speed and precision, the current speed reaches 1000MHz, and the resolution can reach 24 bits. However, the speed and the precision are actually contradictory, for example, the precision of a 1000MHz high-speed analog-to-digital converter is only 8 bits, and the conversion speed of a 24-bit analog-to-digital converter while maintaining the precision is only 10Hz, so in order to ensure the conversion speed and the precision, the first frequency band signal needs to be mixed and down-converted into a zero intermediate frequency signal and then output to an analog-to-digital conversion module for sampling.
The analog-to-digital conversion module 302 is configured to perform analog-to-digital conversion on the zero intermediate frequency signal output by the frequency mixing module 301 and output the zero intermediate frequency signal to the digital signal processing module.
The analog-to-digital conversion module samples the zero intermediate frequency signal received from the frequency mixing module, and converts a signal which continuously changes in time into a signal which is discrete in time, namely, an analog quantity which continuously changes in time is converted into a series of pulses with equal intervals; after the zero intermediate frequency signal is sampled, a series of sample value pulses are obtained;
the sampling pulse width T is typically short, and the amplitude of the sampled pulse should be held temporarily for conversion before the next sampling pulse, so that a holding circuit is added after the sampling circuit;
converting the sampled voltage quantity into a digital quantity in the holding period, giving a converted digital signal according to a certain code, and then starting the next sampling.
Optionally, as shown in fig. 3, the transceiver circuit further includes:
the gain amplifier 303 is configured to perform gain amplification on the first frequency band signal output by the signal filtering processing module 101, and output the first frequency band signal to the anti-aliasing filter 304;
the anti-aliasing filter 304 is configured to filter the amplified first frequency band signal output by the gain amplifier 303 and output the filtered first frequency band signal to the analog-to-digital conversion module 302.
The transceiver circuit of the wireless transceiver adopts a highly integrated transceiver chip, and compared with the traditional transceiver built by discrete devices, the area of a board card is greatly reduced, and the miniaturization design of a broadband transceiver is realized.
The transceiver circuit receives signals through a zero intermediate frequency scheme, for a receiving channel, radio frequency signals sent by the radio frequency front end circuit are amplified through low noise amplification and then sent to the frequency mixer, the single-end radio frequency signals are converted into zero-frequency differential signals, the signals are amplified and filtered and then sent to the analog-to-digital unit, sampling of analog signals is completed, digital IQ signals are generated, and then the digital IQ signals are sent to the digital signal processing module.
In addition, a phase-locked loop module is integrated in the transceiver circuit to generate local oscillation signals of the quadrature modulator and the mixer; meanwhile, a clock circuit is integrated in the transceiver circuit to provide a reference clock and a sampling clock for the phase-locked loop, the analog-digital converter and the digital-analog converter, and the reference clock of the clock circuit is provided by an external circuit.
The radio frequency direct sampling module 103 is configured to output a digital signal to the digital signal processing module 104 after performing analog-to-digital conversion on the received second frequency band signal;
the second frequency band signal is an analog signal.
In an implementation, the rf direct sampling module 103 includes a signal amplifier and an rf direct sampling circuit, and is configured to convert the second frequency band signal received from the signal filtering processing module 101 into a digital signal.
Specifically, firstly, an input second frequency band signal is amplified by an amplifier and then input to a radio frequency direct acquisition circuit, the radio frequency direct acquisition circuit samples the input amplified second frequency band signal and converts a signal which continuously changes in time into a signal which is discrete in time, namely, an analog quantity which continuously changes in time is converted into a series of pulses at equal intervals; sampling the second frequency band signal to obtain a series of sample value pulses;
the sampling pulse width T is typically short, and the amplitude of the sampled pulse should be held temporarily for conversion before the next sampling pulse, so that a holding circuit is added after the sampling circuit;
converting the sampled voltage quantity into a digital quantity in the holding period, giving a converted digital signal according to a certain code, and then starting the next sampling.
The digital signal processing module 104 is configured to perform spectrum monitoring on the digital signals received from the zero intermediate frequency signal processing module 102 and the radio frequency direct sampling module 103.
The embodiment of the invention also provides an ultra-wideband spectrum monitoring method, and as the method is the method of the ultra-wideband spectrum monitoring system in the embodiment of the invention, and the principle of the method for solving the problem is similar to that of the system, the implementation of the method can refer to the implementation of the system, and repeated parts are not described again.
As shown in fig. 5, includes:
step 501, receiving a first frequency band signal/a second frequency band signal through a signal filtering processing module, and sending the first frequency band signal/the second frequency band signal to a zero intermediate frequency signal processing module/a radio frequency direct acquisition module after filtering processing;
step 502, the received first frequency band signal is amplified, filtered, down-converted into a zero intermediate frequency signal, and subjected to analog-to-digital conversion by the zero intermediate frequency signal processing module, and then a digital signal is output to the digital signal processing module;
step 503, the received second frequency band signal is output to the digital signal processing module after analog-to-digital conversion through the radio frequency direct acquisition module;
and step 504, performing spectrum monitoring on the digital signals received from the zero intermediate frequency signal processing module and the radio frequency direct acquisition module through the digital signal processing module.
Optionally, the first frequency band signal includes a plurality of signals of different frequency bands, and the maximum frequency value of the second frequency band signal is smaller than the minimum frequency value of the first frequency band signal.
Optionally, the first frequency band signal includes: 100M-6000M frequency band signals; the second frequency band signal includes: 10M-100M frequency band signals.
Optionally, the zero intermediate frequency signal processing module amplifies and filters the received first frequency band signal, down-converts the first frequency band signal into a zero intermediate frequency signal, and outputs a digital signal to the digital signal processing module after analog-to-digital conversion, including:
the first frequency band signal is subjected to frequency mixing down-conversion to be a zero intermediate frequency signal through a frequency mixing module and then is output to an analog-to-digital conversion module for sampling;
and through an analog-to-digital conversion module, the zero intermediate frequency signal output by the frequency mixing demodulation module is subjected to analog-to-digital conversion and then output to a digital signal processing module.
Optionally, the first frequency band signal output by the signal filtering processing module is output to the analog-to-digital conversion module after signal amplification and filtering.
Optionally, the received first frequency band signal/second frequency band signal is subjected to out-of-band blocking and filtering, and then output to the zero intermediate frequency signal processing module/radio frequency direct acquisition module.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention 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, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams 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.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (13)
1. An ultra-wideband spectrum monitoring system, comprising:
the signal filtering processing module is used for receiving the first frequency band signal, filtering and sending the first frequency band signal to the zero intermediate frequency signal processing module, receiving the second frequency band signal, filtering and sending the second frequency band signal to the radio frequency direct sampling module;
the zero intermediate frequency signal processing module is used for amplifying and filtering the received first frequency band signal, converting the signal into a zero intermediate frequency signal through down conversion, and outputting a digital signal to the digital signal processing module after analog-to-digital conversion;
the radio frequency direct acquisition module is used for outputting a digital signal to the digital signal processing module after performing analog-to-digital conversion on the received second frequency band signal;
and the digital signal processing module is used for carrying out frequency spectrum monitoring on the digital signals received from the zero intermediate frequency signal processing module and the radio frequency direct acquisition module.
2. The system of claim 1, wherein the first frequency band signal comprises a plurality of different frequency band signals, and wherein a maximum frequency of the second frequency band signal is less than a minimum frequency of the first frequency band signal.
3. The system of claim 1, wherein the zero intermediate frequency signal processing module comprises a transceiver circuit.
4. The system of claim 3, wherein the transceiver circuit comprises: the frequency mixing module is used for mixing and down-converting the first frequency band signal into a zero intermediate frequency signal, orthogonally demodulating the zero intermediate frequency signal and outputting the signal to the analog-to-digital conversion module for sampling;
and the analog-to-digital conversion module is used for performing analog-to-digital conversion on the zero intermediate frequency signal output by the frequency mixing module and outputting the zero intermediate frequency signal to the digital signal processing module.
5. The system of claim 4, wherein the transceiver circuit further comprises:
the gain amplifier is used for performing gain amplification on the first frequency band signal output by the signal filtering processing module and outputting the first frequency band signal to the anti-aliasing filter;
and the anti-aliasing filter is used for filtering the amplified first frequency band signal output by the gain amplifier and outputting the filtered first frequency band signal to the frequency mixing module.
6. The system of claim 1, wherein the signal filtering processing module comprises:
and the switch filter bank module is used for performing out-of-band blocking and filtering on the received first frequency band signal/second frequency band signal and outputting the result to the zero intermediate frequency signal processing module/radio frequency direct acquisition module.
7. The system of claim 1, wherein the signal filtering processing module further comprises:
and the radio frequency public front-end module is used for receiving the first frequency band signal and receiving the second frequency band signal.
8. An ultra-wideband spectrum monitoring method, comprising:
the signal filtering processing module is used for receiving the first frequency band signal/the second frequency band signal, filtering the first frequency band signal/the second frequency band signal and sending the first frequency band signal/the second frequency band signal to the zero intermediate frequency signal processing module/the radio frequency direct acquisition module;
the received first frequency band signal is amplified, filtered, down-converted into a zero intermediate frequency signal through the zero intermediate frequency signal processing module, and a digital signal is output to the digital signal processing module after analog-to-digital conversion;
the received second frequency band signal is output to a digital signal processing module after analog-to-digital conversion through the radio frequency direct acquisition module;
and carrying out frequency spectrum monitoring on the digital signals received from the zero intermediate frequency signal processing module and the radio frequency direct acquisition module through the digital signal processing module.
9. The method of claim 8, wherein the first band signal comprises a plurality of different band signals, and wherein a maximum frequency of the second band signal is less than a minimum frequency of the first band signal.
10. The method of claim 9, wherein the first frequency band signal comprises: 100M-6000M frequency band signals; the second frequency band signal includes: 10M-100M frequency band signals.
11. The method of claim 8, wherein the step of outputting the digital signal to the digital signal processing module after the received first frequency band signal is amplified, filtered, down-converted into a zero intermediate frequency signal and analog-to-digital converted by the zero intermediate frequency signal processing module comprises:
the first frequency band signal is subjected to frequency mixing down-conversion to be a zero intermediate frequency signal through a frequency mixing module and then is output to an analog-to-digital conversion module for sampling;
and the zero intermediate frequency signal output by the frequency mixing module is subjected to analog-to-digital conversion through an analog-to-digital conversion module and then output to a digital signal processing module.
12. The method of claim 11, further comprising:
and the first frequency band signal output by the signal filtering processing module is subjected to signal amplification and filtering and then output to the analog-to-digital conversion module.
13. The method of claim 8, wherein the first band signal/the second band signal is received by a signal filtering processing module, and is sent to a zero intermediate frequency signal processing module/a radio frequency direct sampling module after being filtered, comprising:
and outputting the received first frequency band signal/second frequency band signal to the zero intermediate frequency signal processing module/radio frequency direct acquisition module after carrying out-of-band blocking and filtering.
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