CN109374985A - Electromagnetic environment monitor method, system and storage medium - Google Patents
Electromagnetic environment monitor method, system and storage medium Download PDFInfo
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Abstract
The invention discloses a kind of electromagnetic environment monitor method, system and storage mediums, the described method comprises the following steps: obtaining the electromagnetic radiation source feature in each electromagnetic information；The inverting of electromagnetic field spatial distribution is carried out to the electromagnetic radiation source feature, reconstructs Electromagnetic Situation volume data field；The Electromagnetic Situation volume data field is subjected to visualization display.The present invention improves electromagnetic environment precise measurement, and can quick and precisely perceive electromagnetic environment.
Description
Technical field
The invention belongs to network technique fields, and in particular to a kind of electromagnetic environment monitor method, system and storage medium.
Background technique
With the continuous development of radio technology, various radio traffics emerge one after another, and station quantity sharply increases, wirelessly
Electric frequency spectrum resource day is becoming tight, and electromagnetic environment is increasingly complicated, and the variation tendency of research and evaluation electromagnetic environment also becomes more and more important.Electricity
The situation of magnetic environment involves many factors, such as the development and design of all kinds of communication equipments, constructing communication network, frequency distribution, station setting
Examination & approval etc..For the service condition for grasping and understanding existing frequency spectrum resource, the management of specification radio station (station), protection radio electricity
Magnetic environment holds electromagnetic radiation pollution situation in time, needs to carry out radio electromagnetsm environment using electromagnetic environment monitoring system and supervise
Survey and statistic analysis.
Electromagnetic environment monitor is radio monitoring department using advanced technological means and facility, to the base of radio transmitting
This parameter, such as frequency, frequency error, transmitted bandwidth index system measure, signal is monitored, to transmitting identify
Identification determines, counts to frequency range utilization rate and channel degree, analyzes signal service condition, to grasp comprehensively
Electromagnetic environment searches unknown signal and pirate radio.
Electromagnetic environment monitor is substantially a part of electromagnetic spectrum management.Afield, the monitoring of electromagnetic environment is mainly
The electronic intelligence of other side is collected by the way of electronic reconnaissance.Using be deployed in space, it is aerial ,/the various scoutings in sea/face supervise
Depending on means, reconnaissance and surveillance is carried out to electronics such as enemy radar, communications, grasps its position and technical parameter.Due to electromagnetism frequency
It is the three-dimensional management of frequency, room and time in spectrum nature of management, the emphasis of frequency management is frequency and type of business management.Cause
This, electromagnetic environment monitor is exactly the monitoring of the frequency, room and time to local environment.The radio wave propagation rule of different frequency range is each
It is not identical, spectrum monitoring is had to according to radio wave propagation rule and type of business, and binding time and space environment etc. are specific
Situation carries out synthesis and monitors in an orderly manner.
Current electromagnetic environmental monitoring system is usually by antenna sensor part, signal processing, data processing section, interface portion
Divide and power unit forms.
Wherein antenna sensor part generallys use plurality of antennas and field strength sensor carries out the acquisition of electromagnetic environment data,
Antenna can receive the electromagnetic field signal around electromagnetic environment or electronic equipment, be transformed into voltage signal.Electric field detecting instrument is used
It is measured in various far fields, near-field electromagnetic radiation.Electric and magnetic fields intensity can be measured.
Signal processing is mainly rejecting abnormalities data, carries out splicing and the confluence analysis of electromagnetic data.To specified letter
It is number automatic to carry out parameter testing and analysis, correlated frequency analysis is carried out to unknown signal, carries out harmful interference frequency search.
Data processing is that visualization mapping and display processing are carried out to electromagnetic data.The country just started to electromagnetic field in recent years
Data visualization is studied.Start people and passes through itself and conventional software only by means of scientific visualization tool as Matlab
The combination of developing instrument (VC, VB etc.) carries out the design of electromagnetic data visualization platform, solves the problems, such as mainly to utilize
Activex technology is realized to the calling of function in Matlab in conventional developing instrument, realizes two dimension, the three-dimensional of electromagnetic data
Visualization display.
Although having achieved comparable research achievement in terms of electromagnetic environment monitor at present, at many aspects, there is also such as
Lower deficiency:
1) it to carry out the perception of wide-band electromagnetic environment, needs using biconical antenna, helical antenna, log-periodic antenna, double
The plurality of antennas such as ridged horn antenna cover entire working band；
2) field intensity value that can only obtain electromagnetic environment using electric field detecting instrument, cannot obtain power density and frequency domain information；
3) focal plane Electromagnetic Environmental Data Acquisition is carried out using parabola antenna, the small precision of visual field is low, can be only applied to
The electromagnetic leakage in local near field detects；
4) in traditional electromagnetic environment monitor, the characteristics such as frequency, bandwidth and position of electromagnetic radiation source can not be quick
It extracts；
5) comprehensibility of electromagnetic environment monitor as the result is shown is poor, influences commander and makes a policy rapidly.
Summary of the invention
It is an object of the present invention to provide a kind of electromagnetic environment monitor method, system and storage mediums, and it is accurate to solve electromagnetic environment
Measurement and the problem of quick and precisely perceiving.
According to one aspect of the present invention, a kind of electromagnetic environment monitor method is provided, comprising the following steps:
Obtain the electromagnetic radiation source feature in electromagnetic information；
The inverting of electromagnetic field spatial distribution is carried out to the electromagnetic radiation source feature, reconstructs Electromagnetic Situation volume data field；
The Electromagnetic Situation volume data field is subjected to visualization display.
Optionally, in the method for the invention, before obtaining the electromagnetic radiation source feature in electromagnetic information, further includes:
Various electromagnetic informations in space are obtained using broadband digital beam antenna array.
The broadband digital beam antenna array obtains the electromagnetic information in space, comprising:
The reception that electromagnetic wave is carried out using broadband digital beam antenna array carries out wave using digital beam froming DBF technology
The synthesis and control of beam construct double battle arrays, more gusts and a variety of receiving styles of external sort algorithm, are obtained by signal conversion and digital to analog conversion
To electromagnetic information.
Optionally, in the method for the invention, the electromagnetic radiation source feature obtained in electromagnetic information, comprising:
Fusion association is carried out to each electromagnetic information, monopulse direction finding handles to obtain electromagnetic radio frequency parameter, penetrated from the electromagnetism
Electromagnetic radiation source feature is extracted in frequency parameter.
Optionally, described anti-to electromagnetic radiation source feature progress electromagnetic field spatial distribution in the method for the invention
It drills, reconstructs Electromagnetic Situation volume data field, comprising:
According to the electromagnetic radiation power in the electromagnetic radiation source feature, wave frequency, antenna gain data, benefit
Inverting is carried out to the radiation intensity and coverage area of electromagnetic radiation source with Computational electromagnetics algorithm and radio waves propagation model, is generated
The electromagnetic environment data of spatial points utilize the electromagnetic environment data reconstruction Electromagnetic Situation volume data field.
It is optionally, described to utilize the electromagnetic environment data reconstruction Electromagnetic Situation volume data field in the method for the invention,
Include:
According to radiation source number, propagation attenuation model, spatial distribution position and the category itself in the electromagnetic environment data
Property parameter calculates the formate field intensity value at discrete unit, by electromagnetic space discretization, obtains Electromagnetic Situation volume data field.
It is optionally, described that Electromagnetic Situation volume data field is subjected to visualization display in the method for the invention, comprising:
Data processing, visualization mapping, drafting and display are carried out to the Electromagnetic Situation volume data field, wherein described visual
Change mapping, including the frequency of the electromagnetic radiation source to be mapped to the intensity mapping of color and the electromagnetic radiation source at bright.
According to another aspect of the invention, a kind of electromagnetic environment monitoring system is provided, comprising:
Data obtaining module, for obtaining the electromagnetic radiation source feature in electromagnetic information；
Message processing module reconstructs electromagnetism for carrying out the inverting of electromagnetic field spatial distribution to the electromagnetic radiation source feature
Situation volume data field；
Information display module, for the Electromagnetic Situation volume data field to be carried out visualization display.
It optionally, further include information acquisition module in system of the present invention, the information acquisition module, for using
Broadband digital beam antenna array obtains the various electromagnetic informations in space.
The information acquisition module is used specifically for being carried out the reception of electromagnetic wave using broadband digital beam antenna array
Digital beam froming DBF technology carries out the synthesis and control of wave beam, constructs double battle arrays, more gusts and a variety of reception samples of external sort algorithm
Formula obtains electromagnetic information by signal conversion and digital to analog conversion.
Optionally, in system of the present invention, the message processing module is specifically used for special according to the electromagnetic radiation source
Electromagnetic radiation power, wave frequency in sign, antenna gain data, utilize Computational electromagnetics algorithm and radio wave propagation
Model carries out inverting to the radiation intensity and coverage area of electromagnetic radiation source, generates the electromagnetic environment data of spatial points, utilizes
The electromagnetic environment data reconstruction Electromagnetic Situation volume data field.
In terms of third according to the present invention, a kind of computer readable storage medium, the computer-readable storage are provided
Media storage has one or more program, and one or more of programs can be executed by one or more processor, with
The step of realizing electromagnetic environment monitor method.
Beneficial effects of the present invention: the present invention carries out the inverting of electromagnetic field spatial distribution, reconstruct electricity to electromagnetic radiation source feature
The Electromagnetic Situation volume data field is carried out visualization display by magnetic states gesture volume data field；It realizes and utilizes the electromagnetism spoke perceived
It penetrates source data and carries out electromagnetic environment inverting reconstruct, systematically monitor and record electromagnetic environment frequency spectrum data, interference source is surveyed
To positioning and feature-extraction analysis, and Electromagnetic Situation data are used into color image on two-dimentional three-dimensional map in visual form
Show electromagnetic environment.To be supported in time, comprehensively, dynamically to obtain accurate electromagnetic environment information providing technique, further
Ground provides technical support for complex electromagnetic environment spectrum management and aid decision.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And it can be implemented in accordance with the contents of the specification, and in order to allow above and other objects of the present invention, feature and advantage can
It is clearer and more comprehensible, the followings are specific embodiments of the present invention.
Detailed description of the invention
By reading the following detailed description of the preferred embodiment, various other advantages and benefits are common for this field
Technical staff will become clear.The drawings are only for the purpose of illustrating a preferred embodiment, and is not considered as to the present invention
Limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.
Fig. 1 is the frame diagram for the electromagnetic environment monitoring system that first embodiment of the invention provides；
Fig. 2 is the principle frame for the electromagnetic environment monitoring system based on digital beam scanning that second embodiment of the invention provides
Figure；
Fig. 3 is the functional block diagram for the digital beam froming that second embodiment of the invention provides；
Fig. 4 is the workflow for the electromagnetic environment monitoring system based on digital beam scanning that second embodiment of the invention provides
Cheng Tu；
Fig. 5 is the flow chart for the electromagnetic environment monitor method that third embodiment of the invention provides；
Fig. 6 is the process for the electromagnetic environment monitor method based on digital beam scanning that fourth embodiment of the invention provides
Figure.
Specific embodiment
Exemplary embodiments of the present disclosure are described in more detail below with reference to accompanying drawings.Although showing the disclosure in attached drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
It is limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
It is fully disclosed to those skilled in the art.
In the first embodiment of the present invention, a kind of electromagnetic environment monitoring system is provided, it is shown in Figure 1, comprising: information
Module 2, message processing module 3 and information display module 4 are obtained,
The data obtaining module 2, for obtaining the electromagnetic radiation source feature in electromagnetic information.
In a specific embodiment of the invention, data obtaining module 2 is specifically used for utilizing information processing algorithm, when connecing
The electromagnetic information (electromagnetism perception data) from the output of multiple front antennas is received, fusion pass is carried out to each electromagnetic information
Connection, monopulse direction finding handle to obtain electromagnetic radio frequency parameter, and the electricity such as electromagnetic radiation source feature are extracted from the electromagnetic radio frequency parameter
Magnetic characteristic information (that is: carries out signal processing to original signal).Wherein monopulse direction finding processing (that is: Monopulse estimation), is logical
It crosses two neighboring Wave beam forming pulse and carries out equal signal method and poor angle measurement.
The electromagnetic radiation source feature mainly has general characteristics and two kinds of intrapulse feature.
The pulse descriptive word (PDW) that general characteristics are mainly formed by overall pulse data forms, and is that recognizing radar radiation source makes
Main characteristic parameters.Radar recognition based on conventional parameter is mainly characterized by: PDW data flow used by identifying is
It directlys adopt signal parameter detection and measuring system and acquisition is measured to intercepted signal.Not merely with general characteristics parameter
The essence of radar signal feature can be characterized well, it is difficult to realize the accurate sorting and identification of radar emitter signal.
Intrapulse feature is most characteristic one of the parameter of radar emitter signal, and with good stability is according to tune
The difference of mode processed, intrapulse feature parameter extraction, which can be divided into arteries and veins in intentional modulation signature parameter extraction and arteries and veins, is not intended to modulation signature
Parameter extraction.
1) intentional modulation signature in arteries and veins.It refers mainly to for raising radar performance or the specific function of realization and in radar signal wave
Artificial modulation system is added in shape, by reasonable feature extraction algorithm to these modulation systems distinctive intra-pulse modulation rule
Or when invariant feature extraction needed for characteristic parameter.Intentional modulation signature has reacted the essence of radar signal in arteries and veins.In arteries and veins intentionally
Feature extracting method is concentrated mainly on Winger-Ville distribution (WVD) Technique of Feature Extraction, Fourier's variation in short-term
(STFT), Wavelet transformation Technique of Feature Extraction.
LFM, PSK are analyzed using wavelet transformation and wavelet transformation combination norm entropy, neural network and time-frequency distributions technology
With the intrapulse modulation characteristic of the signals such as FSK, the Wavelet Transform Feature parameter based on norm entropy is extracted.
2) modulation signature is not intended in arteries and veins.It is not intended to be attached to thunder due to modulation signature is the difference because of radar circuit and device in arteries and veins
It is the distinctive attribute of radar up to certain characteristic (i.e. fingerprint characteristic or personal feature) on signal, can be used for radiation source
Body identification.
Further, using Data Analysis Services technology, spatial positional information is extracted.
Spatial positional information is obtained by cross bearing.Cross bearing is real using direction finding interleaved mode to radiant source target
Existing radiation source positioning.
The message processing module 3, for carrying out the inverting of electromagnetic field spatial distribution, reconstruct electricity to the electromagnetic radiation source feature
Magnetic states gesture volume data field.
In a specific embodiment of the invention, the message processing module 3 is specifically used for being based on Electromagnetic Calculation side
Method utilizes meter according to the electromagnetic radiation power in the electromagnetic radiation source feature, wave frequency, antenna gain data
It calculates electromagnetism algorithm and radio waves propagation model and inverting is carried out to the radiation intensity and coverage area of electromagnetic radiation source, generate space
The electromagnetic environment data of each point (carry out initial data using the electromagnetic environment data reconstruction Electromagnetic Situation volume data field
Data processing).
Specifically, the present embodiment combination area of observation coverage radiation source and radio waves propagation model, to radiation source electromagnetic radiation intensity and
Coverage area carries out inverting, comprising: according to electromagnetic field interaction, scattering model, arrives spatial distribution using numerical computation method is discrete
Point calculates field intensity value, deflection equiscalar or the Vector Message of each point, calculates certain field source in a continuous time period,
The scalar sum vector data of discrete space point.
It is further, of the present invention to utilize the electromagnetic environment data reconstruction Electromagnetic Situation volume data field, comprising:
According to radiation source number, propagation attenuation model, spatial distribution position and the category itself in the electromagnetic environment data
Property parameter, calculates the formate field intensity value at discrete unit with numerical solution, by electromagnetic space discretization, obtains Electromagnetic Situation body
Data fields.
The formate field intensity value be multiple radiation sources propagate the field strength formed at the position of space need to carry out it is vector superposed
Composite calulation forms comprehensive field strength.
The electromagnetic space discretization is sampled and is drawn for longitude and latitude range shown in form.Sample rate is true
Under the premise of fixed, sampling step length is automatically adjusted with drawing area size.While realizing dynamic sampling, volume data size is kept
It is constant, draw stabilised efficiency.Extensive 3 D electromagnetic environment can be visualized.Scientific visualization method is mainly divided
For two classes: iso-surface patch method and object plotting method.Iso-surface patch method needs to construct geometric graphic element according to 3 d data field, then
Row color applying drawing again.Isosurface extraction technology is one of most common iso-surface patch method, it can be by some in initial data field
Attribute value extracts the profile of certain size range, and then constructs triangular mesh.Object plotting method does not have to then several among construction
What pel, but directly by 3 d data field, contour surface is drawn using MC (Marching Cubes) method, is mapped according to data
Relationship visualizes 3 D electromagnetic environment.
The Electromagnetic Situation volume data field is to calculate radiation source in the electromagnetic field size in this region according to synthesis field model, is obtained
To any observation area formate field intensity volume data in space.
Due to multidimensional radiation source formate field intensity or total radiosity, not only with the intensity of each radiation field and polarization side
Formula is related, also related with the factors such as the frequency of each radiation field, the direction of propagation, phase.Assuming that radiation source number, propagation attenuation mould
Type, spatial distribution position, property parameters itself, spatial electromagnetic situation observation area dynamic state of parameters is adjustable, is calculating the region
On the basis of multidimensional radiation source formate field intensity mathematical model, the formate field intensity at discrete unit is calculated with the method for numerical solution
Value, by electromagnetic space discretization, can be obtained Electromagnetic Situation volume data field.
Inverting described in the present embodiment is to combine battlefield terrain and station data, to non-cooperation radiation source electromagnetic radiation intensity
Inverting is carried out with coverage area.It is exactly the radiation source information using known test point, extrapolates position and the radiation of radiation source
The other informations such as intensity, and then the radiation source is finally inversed by the propagation coverage condition in space.
The information display module 4, for the Electromagnetic Situation volume data field to be carried out visualization display.
In a specific embodiment of the invention, information display module 4 is specifically used for the Electromagnetic Situation volume data field
Data processing, visualization mapping, drafting and display are carried out, wherein the visualization mapping includes: by the electromagnetic radiation source
Frequency is mapped to the intensity mapping of color and the electromagnetic radiation source at bright (brightness).The data processing is to a large amount of original
Beginning data information is screened and is processed.Visualization mapping is the core of whole process, converts the data into the collection for drafting
Pixel and attribute are closed, determines the content and the technique of expression finally shown.Drafting is to convert image for the above graphic element.
It is a kind of visualization stacking method for merging a variety of draftings that the Electromagnetic Situation, which is shown, using Electromagnetic Situation data with can
Form depending on changing shows Electromagnetic Situation information (carrying out imaging using data to show) on two-dimentional three-dimensional map.Specifically, war
Field electromagnetic environment shows progress space electromagnetic environment parameter setting first, electromagnetic data is calculated, then by terrain data and electricity
Magnetic data carries out reading Mapping and Converting, and unified space electromagnetic environment data model, including rectangle net are generated by data modeling
Lattice data model, triangle grid data model and curve control point data model, then it is raw with visualization mapping by parsing to it
It is drawn and is rendered at space electromagnetic environment visualization structure, and to visualization structure, situation, electromagnetism are distributed with electromagnetic field intensity
Isopleth, Electromagnetic Wave Propagation path etc. show the electromagnetism distribution situation in environment, can also be according to the image and system having been displayed
It interacts, rendering image can be zoomed in and out, rotate, translate etc. operate, from multi-angle observation magnetic distribution situation.
In the second embodiment of the present invention, a kind of electromagnetic environment monitoring system based on digital beam scanning, ginseng are provided
As shown in Figure 2, comprising: information acquisition module 1, data obtaining module 2, message processing module 3 and information display module 4,
The information acquisition module 1, for obtaining the various electromagnetism letter in space using broadband digital beam antenna array
It ceases (signal), and is sent to data obtaining module 2.
In a specific embodiment disclosed by the invention, the information acquisition module 1 is specifically used for utilizing wideband digital wave
Beam antenna battle array carries out the reception of electromagnetic wave, and the synthesis and control of wave beam are carried out using digital beam froming DBF technology, and building is double
Battle array, more gusts and a variety of receiving styles of external sort algorithm obtain electromagnetic information by signal conversion and digital to analog conversion.That is: using super
Broadband digital beam aerial array carries out electromagnetic environment perception, is carried out using distributed digital beam antenna to space to realize
Scanning obtains radiation field initial data.
Shown in Figure 3, digital beam froming (DBF) technology can produce launching beam and receive wave beam, pass through transmitting
Electromagnetic signal and reception target reflection echo are detected, and digital beam froming principle is shown in Figure 2, and process is as follows: day
The field distribution that N number of receiving unit of linear array generates target and interference on array aperture carries out spatial sampling, obtains N number of letter in reply
Number；Signal is downconverted to zero intermediate frequency by receiver, obtains ZN vision signal for indicating signal real and imaginary parts；Then by same
When ZN A/D converter working change into mutually and orthogonal digital signal, represent the amplitude and phase of spatial sample values；It is N number of
Complex signal x.In memory；Finally, processor is weighted superposition to these signals, the wave beam of needs is generated.
The reception signal of each array element is transformed into base band by digital beam froming (DBF) technology, and becomes digital signal, so
The processing such as phase shift is made to digital signal afterwards and forms required multiple wave beams.Using digital beam technology, phased-array radar can be with
Multiple independent transmittings and reception wave beam are formed using same antenna bore, the search data transfer rate and tracking number of radar can be improved
According to rate；Flexibly control beam position makes receiving antenna wave beam have adaptive ability；Enable phased-array radar while adaptively
Spatially and temporally filtered；Beam energy is made full use of, using effective measurement method, realizes the accurate survey to target component
Amount.
In wide band digital beam-forming array, receives signal and detected and digitized in cell level, then by number
Processor forms wave beam.This method saves all information that each array signal is included, in addition digital processing is flexible
Property, it can get the performance beyond generic array antenna.Its distinguishing feature is can easily to obtain the property of super-resolution and Sidelobe
Can, realize beam scanning, self calibration and Adaptive beamformer etc..
Radar system application DBF technology generates launching beam and receives wave beam, by transmission of electromagnetic signals and receives target
Reflection echo is detected.And the present invention is to form digital reception beam using aerial array to carry out Electromagnetic Environmental Data Acquisition,
The reception that electromagnetic wave is carried out using the broadband digital beam antenna array of million grades of units carries out the synthesis of wave beam using DBF technology
With control, a variety of receiving styles such as double battle arrays, more gusts and external sort algorithm are constructed, realize the perception to spatial electromagnetic spectrum distribution.
The present invention obtains the various electromagnetic informations in space using distributed digital beam antenna front, is able to carry out spatial beams number
It synthesizes and electromagnetic environment is quickly scanned.
Further, Electromagnetic Situation data feedback to information acquisition module 1 is realized feedback by the information display module 4
Control.
In data obtaining module 2, message processing module 3 and information display module 4 and first embodiment in the present embodiment
Data obtaining module 2, message processing module 3 and information display module 4 it is identical, therefore details are not described herein.
The working principle of the invention, shown in Figure 4:
Step 1: the various electricity in space are obtained using broadband digital beam antenna array (distributed digital beam scanning)
Magnetic information realizes electromagnetic data perception.
Step 2: obtaining the spy of the electromagnetic radiation source in each electromagnetic information using Monopulse estimation and double battle array cross bearings
Sign；
Step 3: calculating Finite Difference Time Domain and battery propagation model to the electromagnetic radiation source using electromagnetism numerical value
Feature carries out the inverting of electromagnetic field spatial distribution, reconstructs Electromagnetic Situation volume data field, generates Electromagnetic Situation data；
Step 4: by visualization mapping, drawing Electromagnetic Situation volume data field progress visualization display, realize electricity
Magnetic imaging.
The embodiment of the present invention obtains the electromagnetism in space using information acquisition module 1 by broadband digital beam antenna array
Information is completed the extraction of electromagnetic radiation source feature using information processing algorithm by information extraction modules 2, passes through information processing mould
Block 3 completes inverting to electromagnetic field spatial distribution based on Electromagnetic Calculation method, finally by information display module 4 by electromagnetic field
It is shown with the drafting of target three-dimensional situation.It is scanned using digital beam and carries out the accurate direction finding in space and positioning, pass through inverting meter
Reconstruct electromagnetic field is calculated, is to belong to wide area far field electromagnetic situation to show.External electromagnetic field can be observed as eyes and
Perception, and the electromagnetic environment of perception is formed into figure and picture, it is special to show the essence such as field amount distribution and the frequency domain information of electromagnetic field
Sign.
In the third embodiment of the present invention, a kind of electromagnetic environment monitor method is provided, this method is supervised for electromagnetic environment
Examining system, it is shown in Figure 5, comprising the following steps:
Step S01: the electromagnetic radiation source feature in electromagnetic information is obtained.
In a specific embodiment of the invention, the electromagnetic radiation source feature obtained in electromagnetic information, comprising:
Using information processing algorithm, when receiving the electromagnetic information from the output of multiple front antennas, (electromagnetism perceives number
According to), fusion association is carried out to each electromagnetic information, monopulse direction finding handles to obtain electromagnetic radio frequency parameter, is penetrated from the electromagnetism
The electromagnetic signatures information such as electromagnetic radiation source feature are extracted in frequency parameter.
Monopulse direction finding processing is Monopulse estimation, is to carry out equal signal method by two neighboring Wave beam forming pulse
With poor angle measurement.
Further, using Data Analysis Services technology, radiation source electromagnetic signature and spatial positional information are extracted.
Spatial positional information is obtained by cross bearing.Cross bearing is real using direction finding interleaved mode to radiant source target
Existing radiation source positioning.
Step S02: the inverting of electromagnetic field spatial distribution is carried out to the electromagnetic radiation source feature, reconstructs Electromagnetic Situation volume data
?.
It is described anti-to electromagnetic radiation source feature progress electromagnetic field spatial distribution in a specific embodiment of the invention
It drills, reconstructs Electromagnetic Situation volume data field, comprising:
Based on Electromagnetic Calculation method, according to electromagnetic radiation power, the electromagnetic wave in the electromagnetic radiation source feature
The data such as frequency, antenna gain, using Computational electromagnetics algorithm and radio waves propagation model to the radiation intensity of electromagnetic radiation source
Inverting is carried out with coverage area, the electromagnetic environment data of spatial points is generated, utilizes the electromagnetic environment data reconstruction electromagnetism state
Gesture volume data field.Specifically, the present embodiment combination area of observation coverage radiation source and radio waves propagation model, to radiation source electromagnetic radiation intensity
Inverting is carried out with coverage area, comprising: discrete to space point using numerical computation method according to electromagnetic field interaction, scattering model
It layouts, calculates field intensity value, deflection equiscalar or the Vector Message of each point, calculate certain field source in a continuous time period,
In the scalar sum vector data of discrete space point.
It is further, of the present invention to utilize the electromagnetic environment data reconstruction Electromagnetic Situation volume data field, comprising:
According to radiation source number, propagation attenuation model, spatial distribution position and the category itself in the electromagnetic environment data
Property parameter calculates the formate field intensity value at discrete unit, by electromagnetic space discretization, obtains Electromagnetic Situation volume data field.
Step S03: the Electromagnetic Situation volume data field is subjected to visualization display.
It is described that Electromagnetic Situation volume data field is subjected to visualization display in a specific embodiment of the invention, comprising:
Data processing, visualization mapping, drafting and display are carried out to the Electromagnetic Situation volume data field, wherein described visual
Changing mapping includes: that the frequency of the electromagnetic radiation source is mapped to the intensity mapping of color and the electromagnetic radiation source at bright.
The data processing is that a large amount of primary data information (pdi) is screened and processed.Visualization mapping is the core of whole process,
The set pixel and attribute for drafting are converted the data into, determines the content and the technique of expression finally shown.Drafting be by
The above graphic element is converted into image.
It is a kind of visualization stacking method for merging a variety of draftings that the Electromagnetic Situation, which is shown, using Electromagnetic Situation data with can
Form depending on changing shows Electromagnetic Situation information on two-dimentional three-dimensional map.
The embodiment of the present invention completes the extraction of electromagnetic radiation source feature using information processing algorithm, is based on Electromagnetic Calculation side
Method completes the inverting to electromagnetic field spatial distribution, finally shows electromagnetic field and the drafting of target three-dimensional situation.Utilize number
Beam scanning carries out the accurate direction finding in space and positioning, reconstructs electromagnetic field by Inversion Calculation, is to belong to wide area far field electromagnetic situation
Show.External electromagnetic field can be observed and be perceived as eyes, and the electromagnetic environment of perception is formed into figure and picture,
Show the substantive characteristics such as field amount distribution and the frequency domain information of electromagnetic field.
In the fourth embodiment of the present invention, a kind of electromagnetic environment monitor method based on digital beam scanning is provided, is being obtained
Before taking the electromagnetic radiation source feature in electromagnetic information, the various electromagnetism in space are obtained using broadband digital beam antenna array
Information specifically comprises the following steps:
Step S001: the various electromagnetic informations in space are obtained using broadband digital beam antenna array.
In a specific embodiment of the invention, the electromagnetism obtained using broadband digital beam antenna array in space
Information, comprising:
The reception that electromagnetic wave is carried out using broadband digital beam antenna array carries out wave using digital beam froming DBF technology
The synthesis and control of beam construct double battle arrays, more gusts and a variety of receiving styles of external sort algorithm, are obtained by signal conversion and digital to analog conversion
To electromagnetic information.That is: electromagnetic environment perception is carried out using ultra-broadband digital beam antenna array, utilizes distributed number to realize
Word beam antenna is scanned space, obtains radiation field initial data.
Digital beam froming (DBF) technology can produce launching beam and receive wave beam, by transmission of electromagnetic signals and connect
It receives target reflection echo to be detected, for digital beam froming principle referring to shown in figure, process is as follows: N number of reception of antenna array
The field distribution that unit generates target and interference on array aperture carries out spatial sampling, obtains N number of complex signal；Receiver will be believed
Number zero intermediate frequency is downconverted to, obtains ZN vision signal for indicating signal real and imaginary parts；Then a by the ZN worked at the same time
A/D converter is changed into phase and orthogonal digital signal, represents the amplitude and phase of spatial sample values；N number of complex signal x.It deposits
In reservoir；Finally, processor is weighted superposition to these signals, the wave beam of needs is generated.
The reception signal of each array element is transformed into base band by digital beam froming (DBF) technology, and becomes digital signal, so
The processing such as phase shift is made to digital signal afterwards and forms required multiple wave beams.Using digital beam technology, phased-array radar can be with
Multiple independent transmittings and reception wave beam are formed using same antenna bore, the search data transfer rate and tracking number of radar can be improved
According to rate；Flexibly control beam position makes receiving antenna wave beam have adaptive ability；Enable phased-array radar while adaptively
Spatially and temporally filtered；Beam energy is made full use of, using effective measurement method, realizes the accurate survey to target component
Amount.
In digital beam froming DBF array, receives signal and detected and digitized in cell level, then by number
It manages device and forms wave beam.This method saves all information that each array signal is included, in addition the flexibility of digital processing,
It can get the performance beyond generic array antenna.Its distinguishing feature is can easily to obtain the performance of super-resolution and Sidelobe,
Realize beam scanning, self calibration and Adaptive beamformer etc..
Radar system application DBF technology generates launching beam and receives wave beam, by transmission of electromagnetic signals and receives target
Reflection echo is detected.And the present invention is to form digital reception beam using aerial array to carry out Electromagnetic Environmental Data Acquisition,
The reception that electromagnetic wave is carried out using the broadband digital beam antenna array of million grades of units carries out the synthesis of wave beam using DBF technology
With control, a variety of receiving styles such as double battle arrays, more gusts and external sort algorithm are constructed, realize the perception to spatial electromagnetic spectrum distribution.
Step S002: the electromagnetic radiation source feature in electromagnetic information is obtained.
Step S003: the inverting of electromagnetic field spatial distribution is carried out to the electromagnetic radiation source feature, reconstructs Electromagnetic Situation body number
According to field.
Step S003: the Electromagnetic Situation volume data field is subjected to visualization display.
Step S02, step S03 in step S002 in the present embodiment, step S003, step S004 and second embodiment,
Step S04 is identical, and details are not described herein for the present embodiment.
The present embodiment obtains the electromagnetic information in space using distributed digital beam antenna front, is able to carry out space wave
Beam digit synthesis simultaneously quickly scans electromagnetic environment, and realization quick and precisely perceives.
The fifth embodiment of the present invention provides a kind of computer readable storage medium, the computer readable storage medium
It is stored with one or more program, one or more of programs can be executed by one or more processor, to realize
The step of electromagnetic environment monitor method that 3rd embodiment or fourth embodiment provide.
Due to being illustrated to electromagnetic environment monitor method in 3rd embodiment or fourth embodiment, this reality
Applying example, details are not described herein.
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or the device that include a series of elements not only include those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or device institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including being somebody's turn to do
There is also other identical elements in the process, method of element, article or device.
The serial number of the above embodiments of the invention is only for description, does not represent the advantages or disadvantages of the embodiments.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side
Method can be realized by means of software and necessary general hardware platform, naturally it is also possible to by hardware, but in many cases
The former is more preferably embodiment.Based on this understanding, technical solution of the present invention substantially in other words does the prior art
The part contributed out can be embodied in the form of software products, which is stored in a storage medium
In (such as ROM/RAM, magnetic disk, CD), including some instructions are used so that a terminal (can be mobile phone, computer, service
Device, air conditioner or network equipment etc.) execute method described in each embodiment of the present invention.
The embodiment of the present invention is described with above attached drawing, but the invention is not limited to above-mentioned specific
Embodiment, the above mentioned embodiment is only schematical, rather than restrictive, those skilled in the art
Under the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, it can also make very much
Form, all of these belong to the protection of the present invention.
Claims (10)
1. a kind of electromagnetic environment monitor method, which comprises the following steps:
Obtain the electromagnetic radiation source feature in electromagnetic information；
The inverting of electromagnetic field spatial distribution is carried out to the electromagnetic radiation source feature, reconstructs Electromagnetic Situation volume data field；
The Electromagnetic Situation volume data field is subjected to visualization display.
2. the method as described in claim 1, which is characterized in that before obtaining the electromagnetic radiation source feature in electromagnetic information,
Further include:
Various electromagnetic informations in space are obtained using broadband digital beam antenna array.
3. the method as described in claim 1, which is characterized in that the electromagnetic radiation source feature obtained in electromagnetic information, packet
It includes:
Fusion association is carried out to each electromagnetic information, monopulse direction finding handles to obtain electromagnetic radio frequency parameter, from the electromagnetic radio frequency join
Electromagnetic radiation source feature is extracted in number.
4. the method as described in claim 1, which is characterized in that described to carry out electromagnetic field space to the electromagnetic radiation source feature
Distribution inversion reconstructs Electromagnetic Situation volume data field, comprising:
According to the electromagnetic radiation power in the electromagnetic radiation source feature, wave frequency, antenna gain data, meter is utilized
It calculates electromagnetism algorithm and radio waves propagation model and inverting is carried out to the radiation intensity and coverage area of electromagnetic radiation source, generate space
The electromagnetic environment data of each point utilize the electromagnetic environment data reconstruction Electromagnetic Situation volume data field.
5. method as claimed in claim 4, which is characterized in that described to utilize the electromagnetic environment data reconstruction Electromagnetic Situation body
Data fields, comprising:
According to radiation source number, propagation attenuation model, spatial distribution position and attribute ginseng itself in the electromagnetic environment data
Electromagnetic space discretization is obtained Electromagnetic Situation volume data field by the formate field intensity value that number calculates at discrete unit.
6. the method as described in claim 1, which is characterized in that it is described that Electromagnetic Situation volume data field is subjected to visualization display,
Include:
Data processing, visualization mapping, drafting and display are carried out to the Electromagnetic Situation volume data field, wherein the visualization is reflected
It penetrates, including the frequency of the electromagnetic radiation source to be mapped to the intensity mapping of color and the electromagnetic radiation source at bright.
7. a kind of electromagnetic environment monitoring system characterized by comprising
Data obtaining module, for obtaining the electromagnetic radiation source feature in electromagnetic information；
Message processing module reconstructs Electromagnetic Situation for carrying out the inverting of electromagnetic field spatial distribution to the electromagnetic radiation source feature
Volume data field；
Information display module, for the Electromagnetic Situation volume data field to be carried out visualization display.
8. system as claimed in claim 7, which is characterized in that further include information acquisition module, the information acquisition module is used
In using the various electromagnetic informations in broadband digital beam antenna array acquisition space.
9. system as claimed in claim 7, which is characterized in that the message processing module is specifically used for according to the electromagnetism
Electromagnetic radiation power, wave frequency in radiation source feature, antenna gain data, using Computational electromagnetics algorithm and
Radio waves propagation model carries out inverting to the radiation intensity and coverage area of electromagnetic radiation source, generates the electromagnetic environment number of spatial points
According to utilizing the electromagnetic environment data reconstruction Electromagnetic Situation volume data field.
10. a kind of computer readable storage medium, which is characterized in that the computer-readable recording medium storage have one or
Multiple programs, one or more of programs can be executed by one or more processor, to realize such as claim 1 to 6
Any one the method step.
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| CN113158524A (en) * | 2021-04-26 | 2021-07-23 | 北京航空航天大学 | Electromagnetic radiation situation perception prediction method and system in complex electromagnetic environment |
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| CN113283526B (en) * | 2021-06-07 | 2022-04-08 | 中国电子科技集团公司第二十九研究所 | Early warning method based on radiation source positioning, computer equipment and readable storage medium |
| CN113705003A (en) * | 2021-08-30 | 2021-11-26 | 陕西天润科技股份有限公司 | Electromagnetic analysis and visualization technology based on three-dimensional space |
| CN113985153A (en) * | 2021-10-27 | 2022-01-28 | 北京蓝湖空间科技发展中心 | Suspension type electric field instrument and atmospheric electric field detection method |
| CN113985376B (en) * | 2021-12-23 | 2022-03-15 | 南京雷电信息技术有限公司 | Radar comprehensive display and control excitation system |
| CN113985376A (en) * | 2021-12-23 | 2022-01-28 | 南京雷电信息技术有限公司 | Radar comprehensive display and control excitation system |
| CN114565731A (en) * | 2022-03-03 | 2022-05-31 | 南京超达信息科技有限公司 | Electromagnetic environment visualization method based on complex terrain |
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