CN111934738A - Novel emergency communication repeater communication method and system - Google Patents
Novel emergency communication repeater communication method and system Download PDFInfo
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- CN111934738A CN111934738A CN202010814663.2A CN202010814663A CN111934738A CN 111934738 A CN111934738 A CN 111934738A CN 202010814663 A CN202010814663 A CN 202010814663A CN 111934738 A CN111934738 A CN 111934738A
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
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- H04B7/15507—Relay station based processing for cell extension or control of coverage area
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- H—ELECTRICITY
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- H04B7/00—Radio transmission systems, i.e. using radiation field
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Abstract
The invention belongs to the technical field of communication, and discloses a novel emergency communication repeater communication method and a novel emergency communication repeater communication system, wherein the novel emergency communication repeater system comprises: the device comprises an image acquisition module, an image analysis module, a to-be-covered area determination module, a central control module, a signal receiving module, a noise reduction module, a power measurement module, a power amplification module, a filtering module, an antenna adjustment module and a signal transmitting module. According to the invention, the receiving antenna and the transmitting antenna are used for respectively receiving and transmitting signals, and the signals are subjected to noise reduction, amplification, filtering and other processing before being transmitted, so that the signal strength can be enhanced, the communication quality can be improved, and the problem of communication in remote/disaster/construction-incomplete areas is solved; the antenna angle is adjusted through the antenna adjusting module, so that the receiving of signals and the transmitting of a target area by the antenna can be realized; the system has simple structure, can realize signal receiving and transmitting and provides reference for the construction of the emergency communication repeater.
Description
Technical Field
The invention belongs to the technical field of communication, and particularly relates to a novel communication method and system for an emergency communication repeater.
Background
At present: along with the continuous development of scientific technology, the field of communication is also wider and wider, the improvement of the living standard of people can not leave the development of communication technology, and once a communication network breaks down, the inconvenience of people's life can be caused, so people continuously improve the communication network device, so that the communication device with wider network coverage, simpler equipment and more advanced equipment can be realized. China is a country with frequent disasters, wide disaster areas and serious disaster loss, and with the rapid development of national economy, the continuous expansion of production scale and the continuous increase of social wealth, the loss caused by disasters also rises year by year, thereby forming serious threat to social security. The attention degree of China to the establishment of the social public security system is greatly improved, and the nation has caught the social public security response system as an important subject of security and danger of the concerned nation. The communication industry is a basic industry which plays a key role in national economy, is a 'nervous system' of a government emergency system, and plays a key role in disaster relief and emergency rescue and emergency handling. Therefore, the development of the emergency communication system has active and profound effects on establishing a social public safety system and guaranteeing the smooth execution of disaster relief and emergency rescue work. However, the existing emergency communication system has poor communication quality and few functions, and cannot meet the communication requirement.
Through the above analysis, the problems and defects of the prior art are as follows: the existing emergency communication system has poor communication quality and few functions and cannot meet the communication requirement.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a novel communication method and a novel communication system for an emergency communication repeater.
The invention is realized in this way, a novel communication method of an emergency communication repeater, which comprises the following steps:
acquiring an image of an area to be covered by an image acquisition program through an image acquisition module; acquiring an acquired image of the area to be covered by using an image analysis program through an image analysis module;
step two, carrying out image classification on the regional images by using an image classification network to obtain an image classification result of the image classification of the regional images;
thirdly, carrying out object detection on the image of the area by using an object detection network to obtain an object detection result of the target object associated with the first class;
fourthly, generating an image analysis result of the area image based on the image classification result and the object detection result; subdividing the region image into a plurality of filter blocks with specified sizes and comprising a plurality of bin points by using a to-be-covered region determining program through a to-be-covered region determining module according to an image analysis result;
scanning each bin point, acquiring the signal intensity of each bin point, and determining a region to be covered based on the acquired signal intensity of the bin point;
step six, the central control module utilizes a main controller to control a signal receiving module and utilizes a receiving antenna to receive signals of a mobile access signal source station; amplifying the accessed signal by using a signal low-noise amplifier through a signal amplification module to reduce the noise coefficient of a receiving link;
step seven, the power measurement module utilizes a power measuring instrument to measure the power of the radio frequency signal of the amplified signal; acquiring a distribution matrix of Brillouin scattering light sensing signals comprising Brillouin scattering light frequency shift and/or Brillouin light power variation by a noise reduction module through a radio frequency power amplifier;
step eight, forming temperature distribution of the radio frequency signals in time and distance and strain distribution of the radio frequency signals in time and distance according to the distribution matrix based on a preset corresponding relation; modeling the temperature distribution by adopting an ARI model;
step nine, forming an observation equation of the strain and the temperature of the radio frequency signal according to the corresponding relation; solving the state equation and the observation equation by adopting a Kalman filtering algorithm; applying the solved result to the noise reduction operation of the radio frequency signal; obtaining a radio frequency signal after noise reduction;
step ten, converting the waveform wave data from a time-space domain to a frequency-wavenumber domain by using the filter to the radio-frequency signal subjected to noise reduction through a filtering module, and pressing a wave train with vertical homodromous axes in the frequency-wavenumber domain to obtain a down-going wave in a positive wavenumber plane and an up-going wave in a negative wavenumber plane;
cutting off the downlink wave, and reserving the uplink wave to obtain the uplink wave in a frequency-wave number domain; performing two-dimensional inverse Fourier transform on the uplink wave in the frequency-wave number domain to obtain a time-space domain reinforced uplink wave reflected wave, and obtaining a downlink reflected wave in the time-space domain by adopting a similar processing method;
step twelve, the same processing is carried out on the data of the common receiver formed by each receiver, and uplink reflected waves and downlink reflected waves are respectively obtained; the arrival time of the sound wave determined by a threshold method or an amplitude attenuation ratio method is used as a reflected wave starting superposition position to be superposed, and a signal is enhanced;
step thirteen, acquiring the current signal strength value of a receiving end in communication connection with a transmitting end by using an antenna adjusting module and an adjuster;
step fourteen, judging whether the current signal intensity value is lower than a preset signal intensity threshold value; if the current signal strength value is lower than a preset signal strength threshold value, controlling the antenna to rotate to a specified angle for debugging, and determining a target angle of the antenna according to a debugging result; controlling the antenna to rotate to the target angle to complete signal receiving;
and step fifteen, transmitting the filtered signals by using the transmitting antenna through the signal transmitting module, and transmitting the signals to an area to be covered.
Further, in the second step, the image categories include a first category and a second category different from the first category.
Further, in step four, the generating an image analysis result of the image based on the image classification result and the object detection result includes:
in a case where the image classification result of the region indicates that the image class of the region is the first class and the image object detection result of the region indicates that the target object is detected, the image analysis result of the region indicates that the image of the region has the target object; or in case the image classification result of the region indicates that the image class of the region is the second class and the image object detection result of the region indicates that the target object is not detected, the image analysis result of the region indicates that the image of the region does not have the target object.
Further, in the sixth step, the signal receiving module receives the mobile access signal source station signal by using a receiving antenna, where an operating frequency of the receiving antenna is 935-960 MHZ.
Further, in the fourteenth step, controlling the antenna to rotate to a specified angle for debugging, and determining a target angle of the antenna according to a debugging result includes:
controlling the antenna to rotate from a zero angle to a limit angle, and recording a coarse tuning debugging angle of the antenna and a coarse tuning debugging signal strength value of a receiving end after the antenna rotates for a first specified degree to obtain a plurality of coarse tuning debugging angles and corresponding coarse tuning debugging signal strength values; comparing the plurality of coarse tuning debugging signal strength values to obtain a coarse tuning debugging signal strength value with the maximum value; and calculating the target angle according to the coarse tuning debugging angle corresponding to the coarse tuning debugging signal intensity value with the maximum value.
Further, the calculating the target angle according to the coarse tuning angle corresponding to the coarse tuning signal strength value with the maximum value specifically includes:
setting a fine adjustment angle range according to the coarse adjustment angle corresponding to the coarse adjustment signal strength value with the maximum value; controlling the antenna to rotate from a lower limit angle to an upper limit angle within the fine adjustment angle range, recording the fine adjustment and debugging angle of the antenna and the fine adjustment and debugging signal strength value of a receiving end after rotating for a second specified degree, and obtaining a plurality of fine adjustment and debugging angles and corresponding fine adjustment and debugging signal strength values, wherein the second specified degree is smaller than the first specified degree; comparing the fine tuning signal strength values to obtain a fine tuning signal strength value with the maximum value; and taking the fine tuning debugging angle corresponding to the fine tuning debugging signal strength value with the maximum value as the target angle.
Further, in the fifteenth step, in the transmitting of the filtered signal by the signal transmitting module using the transmitting antenna, the operating frequency of the transmitting antenna is 890-960 MHZ.
Another objective of the present invention is to provide a novel emergency communication repeater communication system for implementing the novel emergency communication repeater communication method, wherein the novel emergency communication repeater system comprises:
the device comprises an image acquisition module, an image analysis module, a to-be-covered area determination module, a central control module, a signal receiving module, a noise reduction module, a power measurement module, a power amplification module, a filtering module, an antenna adjustment module and a signal transmitting module;
the image acquisition module is connected with the central control module and is used for acquiring images through an image acquisition program;
the image analysis module is connected with the central control module and is used for analyzing the acquired image through an image analysis program;
the to-be-covered area determining module is connected with the central control module and is used for determining the to-be-covered area through the to-be-covered area determining program;
the central control module is connected with the image acquisition module, the image analysis module, the to-be-covered area determination module, the signal receiving module, the noise reduction module, the power measurement module, the power amplification module, the filtering module, the antenna adjustment module and the signal transmitting module and is used for controlling each module to normally operate through the main control computer;
the signal receiving module is connected with the central control module and used for receiving the mobile access signal source station signal through a receiving antenna;
the noise reduction module is connected with the central control module and used for amplifying signals through a signal low-noise amplifier and reducing the noise coefficient of a receiving link;
the power measurement module is connected with the central control module and is used for measuring the radio frequency signal power through the power measuring instrument;
the power amplification module is connected with the central control module and is used for amplifying the radio frequency power through the radio frequency power amplifier;
the filtering module is connected with the central control module and is used for performing uplink and downlink separation filtering through a filter;
the signal transmitting module is connected with the central control module and is used for transmitting the filtered signals through the transmitting antenna;
the antenna adjusting module is connected with the central control module and used for adjusting the angle of the receiving antenna through the adjuster to complete signal receiving; and adjusting the angle of the transmitting antenna, and transmitting the signal to the area to be covered.
It is another object of the present invention to provide a computer program product stored on a computer readable medium, which includes a computer readable program for providing a user input interface to implement the novel emergency communication repeater communication method when the computer program product is executed on an electronic device.
It is another object of the present invention to provide a computer-readable storage medium storing instructions which, when executed on a computer, cause the computer to execute the novel emergency communication repeater communication method.
By combining all the technical schemes, the invention has the advantages and positive effects that: according to the invention, the receiving antenna and the transmitting antenna are used for respectively receiving and transmitting signals, and the signals are subjected to noise reduction, amplification, filtering and other processing before being transmitted, so that the signal strength can be enhanced, the communication quality can be improved, and the problem of communication in remote/disaster/construction-incomplete areas is solved; the antenna angle is adjusted through the antenna adjusting module, so that the receiving of the antenna to the signal and the transmitting to the target area can be realized, and the obtained signal quality is higher; and the antenna adjustment is automatically realized, and the adjustment operation is more convenient. The system provided by the invention has a simple structure, can realize signal receiving and transmitting, and provides reference for the construction of the emergency communication repeater.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained from the drawings without creative efforts.
FIG. 1 is a flowchart of a communication method of an emergency communication repeater according to an embodiment of the present invention.
Fig. 2 is a block diagram of a novel emergency communication repeater system according to an embodiment of the present invention.
Fig. 3 is a flowchart of analyzing a captured image by an image analysis module using an image analysis program according to an embodiment of the present invention.
Fig. 4 is a flowchart of uplink and downlink separation filtering performed by a filtering module using a filter according to an embodiment of the present invention.
Fig. 5 is a flowchart of adjusting the angle of the receiving antenna by the antenna adjusting module using the adjuster according to the embodiment of the present invention.
In fig. 2: 1. an image acquisition module; 2. an image analysis module; 3. a module for determining the area to be covered; 4. a central control module; 5. a signal receiving module; 6. a noise reduction module; 7. a power measurement module; 8. a power amplification module; 9. a filtering module; 10. an antenna adjustment module; 11. and a signal transmitting module.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Aiming at the problems in the prior art, the invention provides a novel communication method and a novel communication system for an emergency communication repeater, and the invention is described in detail below with reference to the accompanying drawings.
As shown in fig. 1, the emergency communication repeater communication method provided in the embodiment of the present invention includes the following steps:
s101, image acquisition is carried out through an image acquisition module by using an image acquisition program; analyzing the collected image by an image analysis module by using an image analysis program;
s102, determining the area to be covered by using an area to be covered determining program through an area to be covered determining module according to the analyzed image information;
s103, controlling each module to normally operate by using a main control computer through a central control module;
s104, receiving a mobile access signal source station signal by using a receiving antenna through a signal receiving module; the signal amplification module amplifies the signal by using a signal low-noise amplifier to reduce the noise coefficient of a receiving link;
s105, measuring the radio frequency signal power by using a power measuring instrument through a power measuring module; amplifying the radio frequency power by using a radio frequency power amplifier through a noise reduction module; performing uplink and downlink separation filtering by using a filter through a filtering module;
s106, adjusting the angle of the receiving antenna by using an adjuster through an antenna adjusting module to complete signal receiving; and adjusting the angle of the transmitting antenna, transmitting the filtered signal by using the transmitting antenna through the signal transmitting module, and transmitting the signal to the area to be covered.
As shown in fig. 2, the novel emergency communication repeater system provided by the embodiment of the present invention includes:
the device comprises an image acquisition module 1, an image analysis module 2, a to-be-covered area determination module 3, a central control module 4, a signal receiving module 5, a noise reduction module 6, a power measurement module 7, a power amplification module 8, a filtering module 9, an antenna adjustment module 10 and a signal transmitting module 11;
the image acquisition module 1 is connected with the central control module 4 and is used for acquiring images through an image acquisition program;
the image analysis module 2 is connected with the central control module 4 and is used for analyzing the acquired image through an image analysis program;
the to-be-covered area determining module 3 is connected with the central control module 4 and is used for determining the to-be-covered area through the to-be-covered area determining program;
the central control module 4 is connected with the image acquisition module 1, the image analysis module 2, the to-be-covered area determination module 3, the signal receiving module 5, the noise reduction module 6, the power measurement module 7, the power amplification module 8, the filtering module 9, the antenna adjustment module 10 and the signal transmitting module 11, and is used for controlling the normal operation of each module through a main control computer;
the signal receiving module 5 is connected with the central control module 4 and used for receiving the mobile access signal source station signal through a receiving antenna;
the noise reduction module 6 is connected with the central control module 4 and used for amplifying signals through a signal low-noise amplifier and reducing the noise coefficient of a receiving link;
the power measurement module 7 is connected with the central control module 4 and is used for measuring the radio frequency signal power through the power measuring instrument;
the power amplification module 8 is connected with the central control module 4 and used for amplifying the radio frequency power through the radio frequency power amplifier;
the filtering module 9 is connected with the central control module 4 and is used for performing uplink and downlink separation filtering through a filter;
the signal transmitting module 10 is connected with the central control module 4 and used for transmitting the filtered signals through a transmitting antenna;
the antenna adjusting module 11 is connected with the central control module 4 and used for adjusting the angle of the receiving antenna through the adjuster to complete signal receiving; and adjusting the angle of the transmitting antenna, and transmitting the signal to the area to be covered.
The technical solution of the present invention is further illustrated by the following specific examples.
Example 1
As shown in fig. 1 and fig. 3, as a preferred embodiment, the emergency communication repeater communication method provided in the embodiment of the present invention performs analysis on a collected image by using an image analysis program through an image analysis module, and includes the following steps:
s201, acquiring an acquired image as an image to be analyzed;
s202, carrying out image classification on the image by using an image classification network to obtain an image classification result of an image class of the image, wherein the image class comprises a first class and a second class different from the first class;
s203, carrying out object detection on the image by using an object detection network to obtain an object detection result of a target object associated with the first class;
s204, generating an image analysis result of the image based on the image classification result and the object detection result.
In step S204, the generating an image analysis result of the image based on the image classification result and the object detection result according to the embodiment of the present invention includes:
in a case that the image classification result indicates that the image class is a first class and the object detection result indicates that the target object is detected, the image analysis result indicates that the image has the target object; or in case the image classification result indicates that the image class is of the second class and the object detection result indicates that the target object is not detected, the image analysis result indicates that the image does not have the target object.
Example 2
As shown in fig. 1, a communication method of an emergency communication repeater according to an embodiment of the present invention is as follows:
subdividing the region image into a plurality of filter blocks with specified sizes and comprising a plurality of bin points by using a to-be-covered region determining program through a to-be-covered region determining module according to an image analysis result; and scanning each bin point, acquiring the signal intensity of each bin point, and determining the region to be covered based on the acquired signal intensity of the bin points.
Example 3
Fig. 1 shows a communication method of an emergency communication repeater according to an embodiment of the present invention, as a preferred embodiment, in step S104, a signal receiving module receives a mobile access signal source station signal through a receiving antenna, where an operating frequency of the receiving antenna is 935-960 MHZ.
Example 4
As shown in fig. 1, as a preferred embodiment, in step S105, a communication method of an emergency communication repeater according to an embodiment of the present invention for amplifying radio frequency power by using a radio frequency power amplifier through a noise reduction module includes:
acquiring a distribution matrix of Brillouin scattering light sensing signals, wherein the Brillouin scattering light sensing signals comprise Brillouin scattering light frequency shift and/or Brillouin light power variation; forming temperature distribution of the radio frequency signals in time and distance and strain distribution of the radio frequency signals in time and distance according to the distribution matrix based on a preset corresponding relation;
modeling the temperature distribution by adopting an ARI model; forming an observation equation of the strain and the temperature of the radio frequency signal according to the corresponding relation; solving the state equation and the observation equation by adopting a Kalman filtering algorithm; and applying the solved result to the noise reduction operation of the radio frequency signal.
Example 5
As shown in fig. 1, and as a preferred embodiment, as shown in fig. 4, in step S105, the emergency communication repeater communication method provided in the embodiment of the present invention performs uplink and downlink separation filtering by using a filter through a filtering module, where the method includes:
s301, converting waveform wave data from a time-space domain to a frequency-wave number domain, and pressing a wave train with vertical homodromous axes in the frequency-wave number domain to obtain a down-going wave in a positive wave number plane and an up-going wave in a negative wave number plane;
s302, cutting off the downlink wave, and reserving the uplink wave to obtain the uplink wave in a frequency-wave number domain;
s303, performing two-dimensional Fourier inverse transformation on the uplink wave in the frequency-wave number domain to obtain a time-space domain reinforced uplink wave reflected wave, and obtaining a downlink reflected wave in the time-space domain by adopting a similar processing method;
s304, carrying out the same processing on the data of the common receiver formed by each receiver to respectively obtain an uplink reflected wave and a downlink reflected wave;
and S305, overlapping the arrival time of the sound wave determined by a threshold method or an amplitude attenuation ratio method as a reflected wave start overlapping position to enhance the signal.
Example 6
Fig. 1 shows a communication method of an emergency communication repeater according to an embodiment of the present invention, as a preferred embodiment, as shown in fig. 5, in step S106, an antenna adjusting module according to an embodiment of the present invention adjusts an angle of a receiving antenna by using an adjuster, specifically:
s401, obtaining a current signal intensity value of a receiving end in communication connection with a transmitting end;
s402, judging whether the current signal intensity value is lower than a preset signal intensity threshold value;
s403, if the current signal strength value is lower than a preset signal strength threshold value, controlling the antenna to rotate to a specified angle for debugging, and determining a target angle of the antenna according to a debugging result;
s404, controlling the antenna to rotate to the target angle.
In step S403, controlling the antenna to rotate to a specified angle for debugging, and determining a target angle of the antenna according to a debugging result, according to the debugging result, includes:
controlling the antenna to rotate from a zero angle to a limit angle, and recording a coarse tuning debugging angle of the antenna and a coarse tuning debugging signal strength value of a receiving end after the antenna rotates for a first specified degree to obtain a plurality of coarse tuning debugging angles and corresponding coarse tuning debugging signal strength values; comparing the plurality of coarse tuning debugging signal strength values to obtain a coarse tuning debugging signal strength value with the maximum value; and calculating the target angle according to the coarse tuning debugging angle corresponding to the coarse tuning debugging signal intensity value with the maximum value.
The calculating of the target angle according to the coarse tuning debugging angle corresponding to the coarse tuning debugging signal strength value with the maximum value provided by the embodiment of the invention specifically comprises the following steps:
setting a fine adjustment angle range according to the coarse adjustment angle corresponding to the coarse adjustment signal strength value with the maximum value; controlling the antenna to rotate from a lower limit angle to an upper limit angle within the fine adjustment angle range, recording the fine adjustment and debugging angle of the antenna and the fine adjustment and debugging signal strength value of a receiving end after rotating for a second specified degree, and obtaining a plurality of fine adjustment and debugging angles and corresponding fine adjustment and debugging signal strength values, wherein the second specified degree is smaller than the first specified degree; comparing the fine tuning signal strength values to obtain a fine tuning signal strength value with the maximum value; and taking the fine tuning debugging angle corresponding to the fine tuning debugging signal strength value with the maximum value as the target angle.
Example 7
Fig. 1 shows a communication method of an emergency communication repeater according to an embodiment of the present invention, as a preferred embodiment, in step S106, in the transmission of the filtered signal by using the transmitting antenna through the signal transmitting module according to the embodiment of the present invention, the operating frequency of the transmitting antenna is 890-960 MHZ.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, and any modification, equivalent replacement, and improvement made by those skilled in the art within the technical scope of the present invention disclosed herein, which is within the spirit and principle of the present invention, should be covered by the present invention.
Claims (10)
1. A novel communication method of an emergency communication repeater is characterized by comprising the following steps:
acquiring an image of an area to be covered by an image acquisition program through an image acquisition module; acquiring an acquired image of the area to be covered by using an image analysis program through an image analysis module;
step two, carrying out image classification on the regional images by using an image classification network to obtain an image classification result of the image classification of the regional images;
thirdly, carrying out object detection on the image of the area by using an object detection network to obtain an object detection result of the target object associated with the first class;
fourthly, generating an image analysis result of the area image based on the image classification result and the object detection result; subdividing the region image into a plurality of filter blocks with specified sizes and comprising a plurality of bin points by using a to-be-covered region determining program through a to-be-covered region determining module according to an image analysis result;
scanning each bin point, acquiring the signal intensity of each bin point, and determining a region to be covered based on the acquired signal intensity of the bin point;
step six, the central control module utilizes a main controller to control a signal receiving module and utilizes a receiving antenna to receive signals of a mobile access signal source station; amplifying the accessed signal by using a signal low-noise amplifier through a signal amplification module to reduce the noise coefficient of a receiving link;
step seven, the power measurement module utilizes a power measuring instrument to measure the power of the radio frequency signal of the amplified signal; acquiring a distribution matrix of Brillouin scattering light sensing signals comprising Brillouin scattering light frequency shift and/or Brillouin light power variation by a noise reduction module through a radio frequency power amplifier;
step eight, forming temperature distribution of the radio frequency signals in time and distance and strain distribution of the radio frequency signals in time and distance according to the distribution matrix based on a preset corresponding relation; modeling the temperature distribution by adopting an ARI model;
step nine, forming an observation equation of the strain and the temperature of the radio frequency signal according to the corresponding relation; solving the state equation and the observation equation by adopting a Kalman filtering algorithm; applying the solved result to the noise reduction operation of the radio frequency signal; obtaining a radio frequency signal after noise reduction;
step ten, converting the waveform wave data from a time-space domain to a frequency-wavenumber domain by using the filter to the radio-frequency signal subjected to noise reduction through a filtering module, and pressing a wave train with vertical homodromous axes in the frequency-wavenumber domain to obtain a down-going wave in a positive wavenumber plane and an up-going wave in a negative wavenumber plane;
cutting off the downlink wave, and reserving the uplink wave to obtain the uplink wave in a frequency-wave number domain; performing two-dimensional inverse Fourier transform on the uplink wave in the frequency-wave number domain to obtain a time-space domain reinforced uplink wave reflected wave, and obtaining a downlink reflected wave in the time-space domain by adopting a similar processing method;
step twelve, the same processing is carried out on the data of the common receiver formed by each receiver, and uplink reflected waves and downlink reflected waves are respectively obtained; the arrival time of the sound wave determined by a threshold method or an amplitude attenuation ratio method is used as a reflected wave starting superposition position to be superposed, and a signal is enhanced;
step thirteen, acquiring the current signal strength value of a receiving end in communication connection with a transmitting end by using an antenna adjusting module and an adjuster;
step fourteen, judging whether the current signal intensity value is lower than a preset signal intensity threshold value; if the current signal strength value is lower than a preset signal strength threshold value, controlling the antenna to rotate to a specified angle for debugging, and determining a target angle of the antenna according to a debugging result; controlling the antenna to rotate to the target angle to complete signal receiving;
and step fifteen, transmitting the filtered signals by using the transmitting antenna through the signal transmitting module, and transmitting the signals to an area to be covered.
2. The novel emergency communication repeater communication method according to claim 1, wherein in step two, the image categories include a first category and a second category different from the first category.
3. The novel emergency communication repeater communication method as claimed in claim 1, wherein in step four, the generating an image analysis result of the image based on the image classification result and the object detection result comprises:
in a case where the image classification result of the region indicates that the image class of the region is the first class and the image object detection result of the region indicates that the target object is detected, the image analysis result of the region indicates that the image of the region has the target object; or in case the image classification result of the region indicates that the image class of the region is the second class and the image object detection result of the region indicates that the target object is not detected, the image analysis result of the region indicates that the image of the region does not have the target object.
4. The communication method of the emergency communication repeater according to claim 1, wherein in the sixth step, the signal receiving module receives the signal of the mobile access signal source station through the receiving antenna, and the operating frequency of the receiving antenna is 935 and 960 MHZ.
5. The novel emergency communication repeater communication method of claim 1, wherein in the fourteenth step, the controlling antenna rotates to a specified angle for debugging, and the target angle of the antenna is determined according to the debugging result, comprising:
controlling the antenna to rotate from a zero angle to a limit angle, and recording a coarse tuning debugging angle of the antenna and a coarse tuning debugging signal strength value of a receiving end after the antenna rotates for a first specified degree to obtain a plurality of coarse tuning debugging angles and corresponding coarse tuning debugging signal strength values; comparing the plurality of coarse tuning debugging signal strength values to obtain a coarse tuning debugging signal strength value with the maximum value; and calculating the target angle according to the coarse tuning debugging angle corresponding to the coarse tuning debugging signal intensity value with the maximum value.
6. The novel emergency communication repeater communication method according to claim 5, wherein the calculating the target angle according to the coarse tuning angle corresponding to the coarse tuning signal strength value with the maximum value specifically comprises:
setting a fine adjustment angle range according to the coarse adjustment angle corresponding to the coarse adjustment signal strength value with the maximum value; controlling the antenna to rotate from a lower limit angle to an upper limit angle within the fine adjustment angle range, recording the fine adjustment and debugging angle of the antenna and the fine adjustment and debugging signal strength value of a receiving end after rotating for a second specified degree, and obtaining a plurality of fine adjustment and debugging angles and corresponding fine adjustment and debugging signal strength values, wherein the second specified degree is smaller than the first specified degree; comparing the fine tuning signal strength values to obtain a fine tuning signal strength value with the maximum value; and taking the fine tuning debugging angle corresponding to the fine tuning debugging signal strength value with the maximum value as the target angle.
7. The communication method of the emergency communication repeater according to claim 1, wherein in the fifteenth step, in the transmitting of the filtered signal by the signal transmitting module using the transmitting antenna, the operating frequency of the transmitting antenna is 890-960 MHZ.
8. A novel emergency communication repeater communication system for implementing the novel emergency communication repeater communication method according to claims 1-7, wherein the novel emergency communication repeater system comprises:
the device comprises an image acquisition module, an image analysis module, a to-be-covered area determination module, a central control module, a signal receiving module, a noise reduction module, a power measurement module, a power amplification module, a filtering module, an antenna adjustment module and a signal transmitting module;
the image acquisition module is connected with the central control module and is used for acquiring images through an image acquisition program;
the image analysis module is connected with the central control module and is used for analyzing the acquired image through an image analysis program;
the to-be-covered area determining module is connected with the central control module and is used for determining the to-be-covered area through the to-be-covered area determining program;
the central control module is connected with the image acquisition module, the image analysis module, the to-be-covered area determination module, the signal receiving module, the noise reduction module, the power measurement module, the power amplification module, the filtering module, the antenna adjustment module and the signal transmitting module and is used for controlling each module to normally operate through the main control computer;
the signal receiving module is connected with the central control module and used for receiving the mobile access signal source station signal through a receiving antenna;
the noise reduction module is connected with the central control module and used for amplifying signals through a signal low-noise amplifier and reducing the noise coefficient of a receiving link;
the power measurement module is connected with the central control module and is used for measuring the radio frequency signal power through the power measuring instrument;
the power amplification module is connected with the central control module and is used for amplifying the radio frequency power through the radio frequency power amplifier;
the filtering module is connected with the central control module and is used for performing uplink and downlink separation filtering through a filter;
the signal transmitting module is connected with the central control module and is used for transmitting the filtered signals through the transmitting antenna;
the antenna adjusting module is connected with the central control module and used for adjusting the angle of the receiving antenna through the adjuster to complete signal receiving; and adjusting the angle of the transmitting antenna, and transmitting the signal to the area to be covered.
9. A computer program product stored on a computer readable medium, comprising a computer readable program for providing a user input interface to implement the novel emergency communication repeater communication method as claimed in any one of claims 1-7 when executed on an electronic device.
10. A computer readable storage medium storing instructions which, when executed on a computer, cause the computer to perform the novel emergency communication repeater communication method as claimed in any one of claims 1-7.
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