Airborne frequency spectrum monitoring system and implementation method

Abstract

The invention discloses an airborne frequency spectrum monitoring system and an implementation method, and belongs to the field of radio signal frequency spectrum monitoring, and the system comprises a control unit which dynamically dispatches hardware resources, assembles frequency spectrum monitoring function software, issues frequency spectrum monitoring working parameters, and cooperates with a signal processing unit to complete frequency spectrum scanning and data collection; the signal processing unit is used for acquiring and analyzing frequency spectrum data and completing fast Fourier transform (FFT), parameter measurement, data smoothing, frequency spectrum splicing, useful signal elimination and frequency spectrum quality evaluation of received frequency spectrum signals; the channel unit is used for receiving a channel and completing signal amplification, filtering, down-conversion and analog-to-digital conversion processing; the radio frequency matrix switch unit is used for completing link connection between the antenna and the channel unit according to the instruction requirement of the control unit; the antenna interface unit is used for pre-processing a radio frequency signal received by an antenna and then sending the pre-processed radio frequency signal to the radio frequency matrix switch; and the antenna is used for receiving and transmitting a radio frequency signal. According to the invention, hardware cost, size and power consumption can be reduced.

Description

Technical Field

[0001] The present invention relates to the field of radio signal spectrum monitoring, and more specifically, to an airborne spectrum monitoring system and an implementation method thereof. Background Art

[0002] The airborne spectrum monitoring system is used to monitor the electromagnetic environment of the working frequency band of airborne sensors in real time, dynamically evaluate the spectrum quality of each sensor, assist pilots and crew to understand the current communication environment, adjust communication strategies in a timely manner, and avoid conflicts or interference. There are generally two implementation methods for traditional airborne spectrum monitoring systems. One is to be deployed in an electronic reconnaissance and countermeasure system, using an array antenna to receive electromagnetic signals to complete spectrum data collection and analysis; the other is to be independently deployed, using independent antennas, channels, and signal processing resources to complete spectrum data collection and analysis.

[0003] The main monitoring objects of the airborne spectrum monitoring system are airborne communication, navigation, and identification signals, concentrated in 108 - 400 MHz and 900 - 1230 MHz. The above-mentioned sensor functions all use omnidirectional antennas for communication. The purpose of the airborne spectrum monitoring system is to collect spectrum data and estimate spectrum quality for the working frequency band where airborne communication, navigation, and identification signals are located. Using the same antenna and channel resources as the evaluation object, the obtained spectrum data has a higher consistency with the actual electromagnetic environment of the evaluation object.

[0004] The existing airborne spectrum monitoring systems mainly have the following two deficiencies: 1) For an independently deployed airborne spectrum monitoring system, limited by the resource conditions of the airborne platform itself, it is difficult to deploy new antennas, channels, and signal processing resources, increasing the volume, weight, and power consumption of the airborne electronic system; at the same time, the newly added independent antenna is limited by the installation location, and the antenna pattern is different from that of the antenna used by the sensor to be monitored, and it cannot accurately feedback the spectrum state of the working frequency band of the sensor to be monitored.

[0005] 2) For an airborne spectrum monitoring system deployed in an electronic reconnaissance and countermeasure system, an array antenna is used to receive spatial signals; due to the application requirements of the electronic reconnaissance and countermeasure system, the azimuth coverage of its array antenna in the airspace is the forward direction of the aircraft, and the elevation angle is ±30°. There is a large difference from the airspace coverage of the sensor to be monitored, and it cannot accurately feedback the spectrum state of the working frequency band of the sensor to be monitored. Summary of the Invention

[0006] The purpose of the present invention is to overcome the deficiencies of the prior art, and provide an airborne spectrum monitoring system and an implementation method thereof. By using the same hardware resources as the sensor to be monitored, it can accurately obtain spectrum data and evaluate spectrum quality, and at the same time, adopt a dynamic scheduling hardware resource strategy to reduce hardware costs, volume, and power consumption.

[0007] The object of the present invention is achieved by the following solutions: An airborne spectrum monitoring system, comprising: a control unit, a signal processing unit, a channel unit, a radio frequency matrix switch unit, an antenna interface unit and an antenna; The control unit is configured to dynamically schedule hardware resources, assemble spectrum monitoring function software, issue spectrum monitoring working parameters, and cooperate with the signal processing unit to complete spectrum scanning and data collection; The signal processing unit is configured to perform spectrum data acquisition and analysis, and complete fast Fourier transform (FFT) of the received spectrum signal, parameter measurement, data smoothing, spectrum splicing, elimination of useful signals, and spectrum quality assessment; The channel unit is configured to receive a channel and complete signal amplification, filtering, down-conversion, and analog-to-digital conversion processing; The radio frequency matrix switch unit is configured to complete the link connection between the antenna and the channel unit according to the instruction requirements of the control unit; The antenna interface unit is configured to send the radio frequency signal received by the antenna to the radio frequency matrix switch after preprocessing; The antenna is configured to complete radio frequency signal reception and transmission.

[0008] Further, the control unit specifically includes a PowerPC processor and an FPGA. Then, the dynamic scheduling of hardware resources, assembling spectrum monitoring function software, issuing spectrum monitoring working parameters, and cooperating with the signal processing unit to complete spectrum scanning and data collection specifically include: Using the PowerPC processor to complete data interaction with the signal processing unit, control of the radio frequency matrix switch unit, and resource scheduling: the PowerPC processor performs data interaction with the signal processing unit to complete the issuance of working parameters and reception of spectrum data; the PowerPC processor controls the radio frequency matrix switch unit to connect the corresponding antenna link according to the functional spectrum acquisition requirements to complete the control of the radio frequency matrix switch unit; the PowerPC processor allocates the processing resources of the sensor function to the spectrum monitoring function for use according to the system requirements when the spectrum monitoring function needs to work to complete resource scheduling; Using the first FPGA to implement interface processing, monitoring of the transceiver status of the sensor, and data forwarding: converting the control instructions that the PowerPC processor needs to send to the radio frequency matrix switch unit into the required format according to the protocol and sending them to the radio frequency matrix switch unit; when the sensor to be monitored is receiving or transmitting, the status is sent to the first FPGA of the control unit in real time through discrete lines, and when the first FPGA detects a status change, it forwards the status indication to the spectrum monitoring function signal processing software for the spectrum monitoring function software to complete further evaluation of the spectrum data.

[0009] Further, the signal processing unit includes a DSP processor and a second FPGA. Then, for the spectrum data acquisition and analysis, the fast Fourier transform (FFT) of the received spectrum signal, parameter measurement, data smoothing, spectrum splicing, elimination of useful signals, and spectrum quality evaluation are completed. Specifically, it includes: The DSP processor is used to implement the interface with the control unit and business data interaction, parameter control of the channel unit and the antenna interface unit, and maintenance of the communication function status. The interface with the control unit and business data interaction includes receiving pre-loaded parameters for the spectrum monitoring function, sending spectrum data and spectrum quality evaluation data. The parameter control and processing of the channel unit and the antenna interface unit control the operating frequencies of the channel unit and the signal interface unit according to the current spectrum acquisition requirements. The maintenance of the communication function status performs data identification for corresponding frequency bands according to the transceiver status of the sensors to be monitored sent by the control unit. The second FPGA is used to implement interface processing and spectrum data processing. The interface processing includes converting the signal control parameters sent by the DSP into the required format through protocols and sending them to the channel unit or the antenna interface unit. The spectrum data processing includes digital filtering and fast Fourier transform (FFT) processing of intermediate frequency digital signals.

[0010] Further, the channel unit includes: a first filter, a first amplifier, a programmable attenuator, a mixer, a local oscillator, an intermediate frequency filter, an intermediate frequency amplifier, and an ADC converter. After receiving the radio frequency signal from the radio frequency matrix switch, the signal is amplitude-adjusted and filtered through the first filter, the first amplifier, and the programmable attenuator, and then down-converted to an intermediate frequency signal through the mixer. After completing intermediate frequency amplification and filtering, it is processed into a digital signal by the ADC converter and transmitted to the signal processing unit.

[0011] Further, the radio frequency matrix switch unit includes a 2×1 matrix switch and a second amplifier. The 2×1 matrix switch realizes the link switching between the antenna and the channel unit, and the second amplifier is used to compensate for the loss caused by the switch.

[0012] Further, the antenna interface unit includes a low-noise amplifier and a second filter. The radio frequency signal received by the antenna is amplified and filtered through the low-noise amplifier and the second filter.

[0013] Further, the antenna includes a ultra-short wave antenna and an L-band antenna, which can realize the reception of radio frequency signals in free space.

[0014] An implementation method of an airborne spectrum monitoring system, based on the above-mentioned airborne spectrum monitoring system, further includes the step: The specific process of using the control unit to realize dynamic hardware resource scheduling and assembling the spectrum monitoring function is as follows: Step 1: The control unit receives an instruction and starts the airborne spectrum monitoring system. Step 2: According to the preset sensor priority configuration, the control unit deconstructs the sensor functions with priorities lower than the spectrum monitoring function, and releases the signal processing resources, channel resources, and antenna resources. Step 3: The control unit completes the signal processing software loading, channel parameter configuration, and link establishment according to the resources required by the spectrum monitoring system. Step 4: After the control unit completes the preparation of the software and hardware resources of the spectrum monitoring system, it sends the working parameters required by the spectrum monitoring function. The spectrum monitoring function completes spectrum data collection, analysis, and data reporting according to the working parameters.

[0015] An implementation method of an airborne spectrum monitoring system. Based on the above-mentioned airborne spectrum monitoring system, it further includes the steps: The specific process of using the signal processing unit to implement spectrum data collection and quality assessment is as follows: Step S1: According to the issued working parameters, collect the spectrum in the ultra-short wave band and enter Step S2, and collect the spectrum in the L band and enter Step S3. Step S2: Read the preset channel parameters of the ultra-short wave issued in the working parameters, read the working frequency points of all channels, and record the lowest frequency and the highest frequency; control the working frequency of the channel module according to the instantaneous maximum bandwidth of the channel module, and sequentially complete the spectrum data collection from the lowest frequency to the highest frequency; according to the start frequency point and end frequency point of each channel, complete data extraction, splicing, and smoothing from the collected spectrum data, and complete the spectrum quality scoring of each channel according to the preset threshold parameters. Step S3: Read the working frequency point information of the L band function issued in the working parameters, record the highest frequency, record the lowest frequency and the highest frequency; control the working frequency of the channel module according to the instantaneous maximum bandwidth of the channel module, and sequentially complete the spectrum data collection from the lowest frequency to the highest frequency; according to the start frequency point and end frequency point of each channel, complete data extraction, splicing, and smoothing from the collected spectrum data, and then calculate the average value of the entire frequency band, and complete the spectrum quality scoring of the working frequency band according to the preset threshold parameters.

[0016] Further, the spectrum quality scoring is specifically as follows: If the statistical value of the spectrum data is not greater than the threshold value, the score is set value one; if the statistical value of the spectrum data is greater than the threshold value and not greater than the exceeded range set by the threshold value, the score is set value two; if the statistical value of the spectrum data is greater than the exceeded range set by the threshold value, the score is set value two.

[0017] The beneficial effects of the present invention include: The airborne spectrum monitoring system implemented in the embodiment of the present invention, based on dynamic scheduling of hardware resources, does not require additional hardware resource overhead such as antennas, channels, and signal processing, and is easy to implement.

[0018] Compared with traditional airborne spectrum monitoring systems, for spectrum monitoring in the working frequency bands of communication, navigation, and identification signals in the 108 - 400 MHz and 900 - 1230 MHz frequency bands, the present invention uses antennas and channel resources consistent with the objects to be monitored, and the collected spectrum data is more accurate, and the confidence level of the spectrum evaluation results is higher.

[0019] The implementation method of airborne spectrum monitoring disclosed in the present invention provides an implementation method of an airborne spectrum monitoring system that can significantly save hardware resources and does not involve changes to channel hardware. Specifically, by time-division multiplexing the existing channel resources of the aircraft, the spectrum data collection of the ultra-short wave band and the L band is completed by means of dynamic scanning and spectrum splicing, and the collected data is analyzed in real time and the spectrum quality score and result reporting are carried out.

[0020] The airborne spectrum monitoring system proposed by the present invention can effectively solve the problems of difficult installation of the spectrum monitoring function of the existing airborne platform and many hardware modifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention, and those of ordinary skill in the art can also obtain other drawings without creative efforts based on these drawings.

[0022] Figure 1 is the composition diagram of the airborne spectrum monitoring system of the present invention; Figure 2a is the first schematic diagram of the specific composition of the airborne spectrum monitoring system in an embodiment of the present invention; Figure 2b is the second schematic diagram of the specific composition of the airborne spectrum monitoring system in an embodiment of the present invention; Figure 3 is the data reception work flow chart of the airborne spectrum monitoring system in an embodiment of the present invention; Figure 4 is the spectrum collection and quality assessment work flow chart of the airborne spectrum monitoring system in an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] All the features disclosed in all the embodiments in this specification, or all the steps in the methods or processes implicitly disclosed, except for mutually exclusive features and / or steps, can be combined and / or extended and replaced in any way.

[0024] Such as Figure 1As shown, in a preferred embodiment, an airborne spectrum monitoring solution based on dynamic scheduling of hardware resources is specifically proposed. By time-division multiplexing the currently used airborne channel resources, the spectrum data collection in the VHF band and L band is completed by means of dynamic scanning and spectrum splicing. The collected data is analyzed in real time, and spectrum quality scoring and result reporting are performed to assist pilots and crew in understanding the current communication environment, adjusting communication strategies in a timely manner, and avoiding conflicts or interference. The specific implementation plan is as follows: As a first aspect of the present invention, an airborne spectrum monitoring system is specifically provided, including a control unit, a signal processing unit, a channel unit, a radio frequency matrix switch unit connected in sequence, and two antenna interface units and two antennas; The control unit is used for dynamically scheduling the system hardware, installing the spectrum monitoring function software, issuing the spectrum monitoring working parameters, and cooperating with the signal processing unit to complete spectrum scanning and data collection; The signal processing unit is used for spectrum data acquisition and analysis, and completes the FFT of the received spectrum signal, parameter measurement, data smoothing, spectrum splicing, elimination of useful signals, and spectrum quality assessment; The channel unit is used for receiving the channel to complete signal amplification, filtering, down-conversion, and analog-to-digital conversion processing; The radio frequency matrix switch unit is used for completing the link connection between the VHF antenna or L-band antenna and the channel unit according to the instruction requirements of the control unit; The antenna interface unit is used for preprocessing the radio frequency signal received by the antenna and sending it to the radio frequency matrix switch; The antenna is used for completing radio frequency signal reception and transmission.

[0025] In other embodiments of the present invention, based on the above embodiments, the control unit is implemented by a PowerPC processor and an FPGA; the PowerPC processor completes data interaction with the signal processing unit, radio frequency matrix switch unit control, and resource scheduling; data interaction with the signal processing unit completes the issuance of working parameters and spectrum data reception; radio frequency matrix switch unit control is to control the radio frequency matrix switch unit to connect the corresponding antenna link according to the functional spectrum acquisition requirements; resource scheduling is to allocate the processing resources of other sensor functions to the spectrum monitoring function for use when the spectrum monitoring function needs to work according to the system requirements; the FPGA realizes interface processing and monitoring of the receiving and transmitting states of other sensors and data forwarding, including converting the control instructions that the PowerPC needs to send to the radio frequency matrix switch unit into the required format according to the protocol and sending them to the radio frequency matrix switch unit; when other sensors are receiving or transmitting, the status will be sent to the FPGA of the control unit in real time through discrete lines, and when the FPGA detects a status change, it will forward the status indication to the spectrum monitoring function signal processing software for the spectrum monitoring function software to further evaluate the spectrum data of useful signals.

[0026] In a further embodiment, Figure 2a and Figure 2b is a specific composition diagram of the airborne spectrum monitoring system proposed in this embodiment. The signal processing unit consists of a DSP, an FPGA, and corresponding DSP software and FPGA software; the DSP realizes interface and service data interaction with the control unit, parameter control of the channel unit and the antenna interface unit, and maintenance of communication function status; the two antenna interface units are a VHF antenna interface unit and an L-band antenna interface unit, and the two antennas are a VHF antenna and an L-band antenna.

[0027] Specifically, the interface and service data interaction with the control unit includes receiving pre-loaded parameters for spectrum monitoring functions, maintaining heartbeat data, sending spectrum data and spectrum quality assessment data; the parameter control processing of the channel unit and the antenna interface unit controls the operating frequencies of the channel unit and the signal interface unit according to the current spectrum acquisition requirements; the maintenance of communication function status performs corresponding frequency band data identification according to the transceiver status of the VHF band / L-band parallel function sent by the control unit; the FPGA realizes interface and spectrum data processing. The interface processing includes converting the signal control parameters sent by the DSP into the required format through the protocol and sending them to the channel unit or the antenna interface unit; the spectrum data processing includes digital filtering and FFT processing of the intermediate frequency digital signal.

[0028] In this embodiment, the channel unit includes a filter, an amplifier, a programmable attenuator, a mixer, a local oscillator, an intermediate frequency filter, an intermediate frequency amplifier, and an AD / DA converter. The RF signal received from the RF matrix switch is amplitude-adjusted and filtered by the filter, amplifier, and programmable attenuator, and then down-converted to an intermediate frequency signal by the mixer. After completing intermediate frequency amplification and filtering, it is processed into a digital signal by the AD converter and transmitted to the signal processing unit.

[0029] In this embodiment, the RF matrix switch unit includes a 2×1 matrix switch and an amplifier. The 2×1 matrix switch realizes the link switching between the VHF antenna, the L-band antenna, and the channel unit, and the amplifier is used to compensate for the loss caused by the switch.

[0030] In this embodiment, the antenna interface unit includes a low-noise amplifier and a filter. The RF signal received by the antenna is amplified and filtered by the low-noise amplifier and the filter to complete the reception of the RF signal.

[0031] In this embodiment, the antenna consists of no less than one VHF antenna and one L-band antenna; it realizes the reception of RF signals in free space.

[0032] As the second aspect of the present invention, for the airborne spectrum monitoring system in the above embodiment, this embodiment further elaborates on its data reception process, which specifically includes the following contents: Such asFigure 3 As shown in the figure, when the airborne spectrum monitoring system is started, the control unit deconstructs the sensor functions with lower priorities than the spectrum monitoring function according to the preset sensor priority configuration, and releases the signal processing resources, channel resources, and antenna resources. The control unit loads the signal processing software, configures the channel parameters, and builds the link according to the resources required by the spectrum monitoring system. After the control unit completes the preparation of the software and hardware resources of the spectrum monitoring system, it sends the working parameters required by the spectrum monitoring function. The spectrum monitoring function determines the frequency bands to be scanned according to the working parameters, controls the working modules, gains, and working frequencies of the channel unit, and completes the scanning and data acquisition of the specified frequency bands.

[0033] Further, as Figure 4 shown, as the third aspect of the present invention, in other embodiments of the present invention, a spectrum data acquisition and quality evaluation process for the airborne spectrum monitoring system is also proposed, which specifically includes the following contents: After receiving the intermediate frequency data, the channel processing unit completes digital down-conversion, FFT transformation, performs multi-frame statistical averaging, corrects the power according to the link gain, completes the spectrum scanning and data acquisition of the specified frequency band, completes the spectrum data splicing, statistically calculates the spectrum amplitude according to the working frequency band of the monitoring object in the working parameters, and compares it with the preset threshold value. When the statistical value is not greater than the threshold value, the spectrum quality evaluation score is 3 points; when the statistical value is less than the threshold value but not greater than the threshold value + 6 dB, the spectrum quality evaluation score is 2 points; when the statistical value is greater than the threshold value + 6 dB, the spectrum quality evaluation score is 1 point. After the scoring of all the working frequency bands of the monitoring objects is completed, the evaluation results are reported to the control unit.

[0034] The units involved in the embodiments of the present invention can be implemented in software or in hardware, and the described units can also be provided in a processor. Among them, the names of these units do not constitute a limitation to the unit itself in some cases.

[0035] According to one aspect of the embodiments of the present invention, a computer program product or a computer program is provided. The computer program product or the computer program includes computer instructions, and the computer instructions are stored in a computer-readable storage medium. The processor of the computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device executes the methods provided in the above various alternative implementation manners.

[0036] As another aspect, an embodiment of the present invention further provides a computer-readable medium. The computer-readable medium may be included in the electronic device described in the above embodiment; or it may exist alone without being assembled into the electronic device. The above computer-readable medium carries one or more programs. When the above one or more programs are executed by an electronic device, the electronic device implements the method described in the above embodiment.

Claims

1. An airborne spectrum monitoring system, characterized in that: include: Control unit, signal processing unit, channel unit, radio frequency matrix switch unit, antenna interface unit and antenna; The control unit is used to dynamically schedule hardware resources, install spectrum monitoring function software, issue spectrum monitoring working parameters, and cooperate with the signal processing unit to complete spectrum scanning and data collection; The signal processing unit is used for spectrum data acquisition and analysis, and completes fast Fourier transform (FFT), parameter measurement, data smoothing, spectrum splicing, useful signal removal and spectrum quality evaluation of the received spectrum signal; The channel unit is used to receive channels and complete signal amplification, filtering, down-conversion and analog-to-digital conversion processing; The radio frequency matrix switch unit is used to complete the link connection between the antenna and the channel unit according to the instruction requirements of the control unit; The antenna interface unit is used to send the radio frequency signal received by the antenna to the radio frequency matrix switch after pre-processing; The antenna is used to receive and transmit radio frequency signals.

2. The airborne spectrum monitoring system according to claim 1, characterized in that: The control unit specifically includes a PowerPC processor and an FPGA, and the dynamic scheduling of hardware resources, installation of spectrum monitoring function software, distribution of spectrum monitoring working parameters, and coordination with the signal processing unit to complete spectrum scanning and data collection specifically include: The PowerPC processor is used to complete data interaction with the signal processing unit, control of the RF matrix switch unit and resource scheduling: the PowerPC processor interacts with the signal processing unit to complete the sending of working parameters and reception of spectrum data; the PowerPC processor controls the RF matrix switch unit to connect to the corresponding antenna link according to the functional spectrum acquisition requirements to complete the control of the RF matrix switch unit; the PowerPC processor allocates the processing resources of the sensor function to the spectrum monitoring function when the spectrum monitoring function needs to work according to system requirements to complete resource scheduling; The first FPGA is used to implement interface processing, sensor receiving and transmitting status monitoring, and data forwarding: the control instructions that the PowerPC processor needs to send to the RF matrix switch unit are formatted and sent to the RF matrix switch unit according to the protocol requirements; when the sensor to be monitored is receiving or transmitting, the status is sent to the first FPGA of the control unit in real time through a discrete line, and when the first FPGA collects the status change, it forwards the status indication to the spectrum monitoring function signal processing software, which is used for the spectrum monitoring function software to complete further evaluation of the spectrum data.

3. The airborne spectrum monitoring system according to claim 1, characterized in that: The signal processing unit includes a DSP processor and a second FPGA, and the spectrum data acquisition and analysis completes the fast Fourier transform FFT, parameter measurement, data smoothing, spectrum splicing, useful signal removal and spectrum quality evaluation of the received spectrum signal, specifically including: The DSP processor is used to realize the interaction with the control unit interface and business data, the channel unit and antenna interface unit parameter control and communication function status maintenance: the interaction with the control unit interface and business data includes receiving spectrum monitoring function pre-load parameters, sending spectrum data and spectrum quality assessment data; the channel unit and antenna interface unit parameter control processing is to control the working frequency of the channel unit and the signal interface unit according to the current spectrum acquisition requirements; the communication function status maintenance is to identify the corresponding frequency band data according to the transceiver status of the sensor to be monitored sent by the control unit; The second FPGA is used to implement interface processing and spectrum data processing: interface processing includes converting the format of the signal control parameters sent by the DSP according to the protocol requirements and sending them to the channel unit or antenna interface unit; spectrum data processing includes digital filtering and fast Fourier transform FFT processing of the intermediate frequency digital signal.

4. The airborne spectrum monitoring system according to claim 1, characterized in that: The channel unit comprises: filter 1, amplifier 1, programmable attenuator, mixer, local oscillator, intermediate frequency filter, intermediate frequency amplifier and ADC converter; after receiving the radio frequency signal from the radio frequency matrix switch, the signal is amplitude adjusted and filtered through filter 1, amplifier 1 and programmable attenuator, and then down-converted to intermediate frequency signal through mixer, and after intermediate frequency amplification and filtering, it is processed into digital signal through ADC converter and transmitted to signal processing unit.

5. The airborne spectrum monitoring system according to claim 1, characterized in that: The radio frequency matrix switch unit includes a 2×1 matrix switch and a second amplifier. The 2×1 matrix switch implements link switching between antennas and channel units, and the second amplifier is used to compensate for the loss caused by the switch.

6. The airborne spectrum monitoring system according to claim 1, characterized in that: The antenna interface unit comprises a low noise amplifier and a second filter; the radio frequency signal received by the antenna is amplified and filtered through the low noise amplifier and the second filter.

7. The airborne spectrum monitoring system according to claim 3, characterized in that: The antenna comprises an ultra-short wave antenna and an L-band antenna, and can realize the reception of radio frequency signals in free space.

8. A method for implementing an airborne spectrum monitoring system, characterized in that: Based on the airborne spectrum monitoring system of claim 2, the further step is further included: the specific process of using the control unit to implement the dynamic hardware resource scheduling assembly spectrum monitoring function is: Step 1: The control unit receives an instruction and starts the airborne spectrum monitoring system; Step 2: The control unit deconstructs the sensor function with a lower priority than the spectrum monitoring function according to the preset sensor priority configuration, and releases signal processing resources, channel resources and antenna resources; Step 3: The control unit completes signal processing software loading, channel parameter configuration, and link establishment according to the resources required by the spectrum monitoring system; Step 4: After the control unit completes the preparation of the software and hardware resources of the spectrum monitoring system, it sends the working parameters required by the spectrum monitoring function. The spectrum monitoring function completes spectrum data collection and analysis and data reporting according to the working parameters.

9. A method for implementing an airborne spectrum monitoring system, characterized in that: The airborne spectrum monitoring system according to claim 7 further comprises the following steps: the specific process of using the signal processing unit to realize spectrum data acquisition and quality assessment is as follows: Step S1, according to the issued working parameters, collect the spectrum of the ultra-short wave band and proceed to step S2, collect the spectrum of the L band and proceed to step S3; Step S2, read the ultrashort wave preset channel parameters issued in the working parameters, read the working frequency points of all channels, and record the lowest frequency and the highest frequency; control the working frequency of the channel module according to the instantaneous maximum bandwidth of the channel module, and complete the spectrum data collection from the lowest frequency to the highest frequency in sequence; according to the starting frequency point and the ending frequency point of each channel, complete the data extraction, splicing and smoothing from the collected spectrum data, and complete the spectrum quality scoring of each channel according to the preset threshold parameters; Step S3, read the L-band function working frequency information issued in the working parameters, record the highest frequency, record the lowest frequency and the highest frequency; control the working frequency of the channel module according to the instantaneous maximum bandwidth of the channel module, and complete the spectrum data collection from the lowest frequency to the highest frequency in sequence; according to the starting frequency and ending frequency of each channel, complete data extraction, splicing, and smoothing from the collected spectrum data, and then calculate the average value of the entire frequency band, and complete the spectrum quality scoring of the working frequency band according to the preset threshold parameters.

10. The method for implementing the airborne spectrum monitoring system according to claim 9, characterized in that: The spectrum quality scoring is specifically as follows: if the spectrum data statistic value is not greater than the threshold value, the score is set to one; if the spectrum data statistic value is greater than the threshold value but not greater than the threshold value but within the range set, the score is set to two; if the spectrum data statistic value is greater than the threshold value but within the range set, the score is set to two.

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