CN114051131A - Radar video display method, device, equipment and storage medium - Google Patents
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Abstract
The invention discloses a radar video display method, a device, equipment and a storage medium, wherein the method comprises the following steps: initiating a radar video request containing a required data range; radar video data are obtained; classifying and caching radar video data, wherein the cached radar video data comprises two-dimensional data and three-dimensional data; and performing two-dimensional graphic display on the radar video according to the two-dimensional data, and performing three-dimensional graphic display on the radar video according to the three-dimensional data. The invention collects data through a computer network card, displays the data in a two-dimensional and three-dimensional graphical mode, caches the data, and performs interframe comparison through playback so as to allow researchers to perform radar target original signal characteristic analysis. The radar video visualization effect is improved, convenient human-computer interaction can capture data at any time and playback the data for signal characteristic analysis, the debugging efficiency is improved, the debugging time is shortened, and the manufacturing and maintenance cost is reduced.
Description
Technical Field
The invention belongs to the technical field of radar video visualization, and particularly relates to a radar video display method, device, equipment and storage medium.
Background
Visualization is a theory, method and technology that data is converted into graphics or images by using computer graphics and displayed on a screen, and interactive processing is performed, and becomes a comprehensive technology for researching a series of problems such as data representation, data processing, decision analysis and the like.
Secondary radars, also called SSR (SSR), are important components of air traffic control monitoring systems and provide important information sources for air traffic control. The secondary radar interrogator completes the inquiry and response process by matching with an onboard transponder of the airplane to acquire relevant information of the airplane, including distance, direction, altitude, target codes and other special marks.
After receiving the response signal of the responder, the secondary radar receiver obtains the original radar target through signal processing processes such as demodulation and decoding, and obtains the point track and track information of the flying target through point track processing and track processing processes. Usually, on a radar display terminal, the relevant information of the target is displayed by using a point track and a flight track, and the point track or the flight track information is sent to a control center at the rear end for airport monitoring or route control. The radar video is an original signal of a radar detection target, and is used as an input of decoding processing, so that the accuracy of original target information is influenced, and therefore, analysis of the radar video plays an important role in a signal processing process. Engineers generally analyze the characteristics of radar target original signals through the parameter values of radar videos, and the characteristics affect the method and the effect of a signal processing process, so that the radar videos become important attention objects of signal processing and analysis, and the acquisition and display of the radar videos become important links of the radar signal processing and analysis.
The existing radar target original signal characteristic analysis means generally utilizes an oscilloscope to perform acquisition analysis and uses a special display device to perform display analysis. The oscilloscope is an electronic measuring instrument with wide application, can convert the collected electric signals into visible images, is convenient for researching the characteristics and the change process of the signals, but the oscilloscope has the problems of difficult capture, incapability of storing and replaying and the like during signal analysis, so that the debugging consumes more energy and consumes more time; the special display device needs to be specially provided with a video display and a display card driving circuit, and has the defects of high manufacturing cost, time consumption and the like.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a radar video display method, a device, equipment and a storage medium. The radar video visualization effect is improved, convenient human-computer interaction can capture data at any time and playback the data for signal characteristic analysis, the debugging efficiency is improved, the debugging time is shortened, and the manufacturing and maintenance cost is reduced.
The purpose of the invention is realized by the following technical scheme:
a radar video display method comprises the following steps:
initiating a radar video request containing a required data range;
radar video data are obtained;
classifying and caching radar video data, wherein the cached radar video data comprises two-dimensional data and three-dimensional data;
the classifying and caching radar video data specifically comprises the following steps:
storing the radar video data into a one-dimensional array;
copying data from the one-dimensional array into a radar video data structure;
taking out radar video data from the structure body and assigning the radar video data to a three-dimensional array;
taking out a data set required by two-dimensional display from the three-dimensional array and storing the data set into the two-dimensional array;
adding the three-dimensional array data into an array queue for caching;
and performing two-dimensional graphic display on the radar video according to the two-dimensional data, and performing three-dimensional graphic display on the radar video according to the three-dimensional data.
Further, the three-dimensional array comprises a distance, an orientation and an amplitude; the data set required for a two-dimensional display includes distance and amplitude.
Further, the step of initiating a radar video request including the required data range specifically includes:
initializing a network port requesting radar video;
configuring the requested radar video parameters; the parameters comprise a distance range and an azimuth range;
and initiating a radar video request.
Further, the acquiring of the radar video data specifically includes the following steps:
initializing a network port for receiving a radar video request;
the radar video data is received through the communication middleware.
Further, when the data cached in the array queue reaches the maximum value set by the queue, the new frame data is added to the tail of the queue, and the data of the frame cached firstly in the array queue is deleted.
Further, the two-dimensional graphic display comprises two-dimensional real-time display and two-dimensional playback display, and when the two-dimensional playback display is performed, the two-dimensional real-time display is paused; the three-dimensional graphical display comprises a three-dimensional playback display.
Further, when three-dimensional playback display is carried out, the data sets are matched according to the selected distance range, and data in the distance range in all cache frames in the array queue are copied to the current array;
and when the two-dimensional playback display is carried out, copying the data in the selected frame distance range in the array queue to the current array according to the selected distance range.
In another aspect, the present application provides a radar video display apparatus, the apparatus comprising:
the request module is used for initiating a radar video request containing a required data range;
the acquisition module acquires radar video data;
the cache module is used for classifying and caching radar video data, and the cached radar video data comprises two-dimensional data and three-dimensional data;
the classifying and caching radar video data specifically comprises the following steps:
storing the radar video data into a one-dimensional array;
copying data from the one-dimensional array into a radar video data structure;
taking out radar video data from the structure body and assigning the radar video data to a three-dimensional array;
taking out a data set required by two-dimensional display from the three-dimensional array and storing the data set into the two-dimensional array;
adding the three-dimensional array data into an array queue for caching;
and the graphic display module is used for performing two-dimensional graphic display on the radar video according to the two-dimensional data and performing three-dimensional graphic display on the radar video according to the three-dimensional data.
Optionally, the values given to the three-dimensional array by the cache module include a distance, an azimuth, and an amplitude; the data set required for the two-dimensional display retrieved by the caching module includes a distance and a magnitude.
Optionally, the request module initializes a network port requesting the radar video; configuring the requested radar video parameters; the parameters comprise a distance range and an azimuth range; and initiating a radar video request.
Optionally, the graphic display module adds the new frame data to the tail of the array when the data buffered in the array reaches the maximum value set in the array, and deletes the data of the frame buffered first in the array.
Optionally, the two-dimensional graphic display of the graphic display module includes two-dimensional real-time display and two-dimensional playback display, and when the two-dimensional playback display is performed, the two-dimensional real-time display is paused; the three-dimensional graphical display of the graphical display module includes a three-dimensional playback display.
Optionally, when the graphic display module performs three-dimensional playback display, the graphic display module matches the data set according to the selected distance range, and copies data within the distance range in all the buffer frames in the array queue to the current array;
and when the graphic display module is used for two-dimensional playback display, copying the data in the selected frame distance range in the array queue to the current array according to the selected distance range.
In another aspect, the present application provides a computer device comprising a processor and a memory, the memory having stored therein a computer program, the computer program being loaded and executed by the processor to implement any of the radar video display methods described above.
In another aspect, the present application provides a computer-readable storage medium, in which a computer program is stored, the computer program being loaded and executed by a processor to implement any one of the radar video display methods described above.
The invention has the beneficial effects that:
the radar video display method provided by the invention takes a general computer as an operation platform, acquires data by a computer network card, receives and caches the radar video data, analyzes the data to perform two-dimensional and three-dimensional graphic display, can perform human-computer interaction to display and select data frames and data sections, and has the advantages of less manpower resource consumption, less debugging time and lower cost compared with the traditional technical scheme that an oscilloscope or special display equipment is adopted to acquire and analyze radar target original signals.
Drawings
Fig. 1 is a schematic flowchart of a radar video display method according to embodiment 1 of the present invention;
fig. 2 is a schematic flowchart of a process of classifying and caching radar video data according to the radar video display method provided in embodiment 1 of the present invention;
fig. 3 is a schematic diagram of a publish-subscribe communication mode of communication middleware of the radar video display method according to embodiment 1 of the present invention;
fig. 4 is a schematic view of playback data storage of the radar video display method provided in embodiment 1 of the present invention.
Fig. 5 is a schematic structural diagram of a radar video display device provided in embodiment 2 of the present invention.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The existing radar target original signal characteristic analysis means generally utilizes an oscilloscope to perform acquisition analysis and uses a special display device to perform display analysis. The oscilloscope is an electronic measuring instrument with wide application, can convert the collected electric signals into visible images, is convenient for researching the characteristics and the change process of the signals, but the oscilloscope has the problems of difficult capture, incapability of storing and replaying and the like during signal analysis, so that the debugging consumes more energy and consumes more time; the special display device needs to be specially provided with a video display and a display card driving circuit, and has the defects of high manufacturing cost, time consumption and the like.
To solve this problem, various embodiments of the radar video display method of the present invention are proposed. The radar video display method provided by the invention is based on a visualization module realized by a general computer, a distance range and an azimuth range are selected to carry out radar video request, radar video receiving is realized by adopting a communication middleware, then a data set is matched and cached, finally, data is taken out to carry out two-dimensional and three-dimensional graphic display, and signal characteristic analysis is carried out according to the data relation in the graphic.
An embodiment of the present invention provides a radar video display method, and referring to fig. 1, as shown in fig. 1, is a schematic flow diagram of the radar video display method provided in this embodiment.
The method specifically comprises the following steps:
step S100: a radar video request is initiated that contains the desired data range.
Specifically, the radar video request is sent by a radar video request module, and the radar video request module comprises network port initialization, parameter configuration, radar video request control and control instruction sending. Firstly, initializing a network port requesting radar video, wherein the network port requesting data in the scheme adopts a UDP protocol, and can set a network address and a port for receiving a request by a signal processing end, and the set network address and the port correspond to a receiving address port of a signal processing module; after the initialization request network port is successful, configuring the distance range and the azimuth range of the requested radar video, and after the parameter configuration, requesting the radar video, adding the setting parameter into an instruction packet with a fixed format by the module, and then sending the instruction packet to the signal processing module through the request network port; the signal processing module makes analysis and judgment after receiving a request instruction of the radar video, and forwards the radar video data corresponding to the distance range and the azimuth range to the data acquisition module of the radar video in a fixed format; when radar video receiving needs to be stopped, the radar video request module sends a command of stopping radar video to the signal processing module, and then the signal processing module stops sending radar video data.
Step S200: and radar video data are obtained.
Specifically, the radar video acquisition is executed by the radar video acquisition module, a network port for receiving the radar video is initialized, and after the initialization is successful, the radar video data sent by the signal processing module is waited to be received. The radar video receiving is introduced into a communication middleware, and the loading library of the communication middleware realizes the receiving of the data packet. The communication middleware is a high-performance asynchronous message transfer library, provides a message queue and realizes efficient and reliable message transfer. The communication middleware includes transmission in multiple communication modes, in this embodiment, message transmission in a publish-subscribe mode is adopted, and the communication architecture thereof is as shown in fig. 3, which has the advantage that the subscribing terminal can be installed in any computer node, and can receive subscribed messages as long as the subscribing terminal is bound to the publishing terminal address and subscribes to the published topics. In the technical scheme, the signal processing module serves as a publishing terminal of the mode, and the radar video acquisition module serves as a subscribing terminal and receives a subscribed radar video message packet.
In this embodiment, a network address to be bound is set in the radar video acquisition module, then the subscription end is initialized, and the radar video message packet can be received after the initialization is successful.
Step S300: and radar video data are cached in a classified mode, and the cached radar video data comprise two-dimensional data and three-dimensional data.
Referring to fig. 2, as shown in fig. 2, the specific steps of classifying and caching radar video data by the radar video display method according to the embodiment are provided.
Step S301: the radar video data is stored into a one-dimensional array. The length of the one-dimensional array is equal to the number of sampling points (sum channel amplitude byte number + difference channel amplitude byte number) + azimuth byte number.
Step S302: and copying data from the one-dimensional array into a radar video data structure body. The data in the structure body are as follows in sequence:
and channel amplitude sample value, difference channel amplitude sample value, 2 byte ACP (azimuth pulse count) value. And the sum channel amplitude sampling value length is equal to the number of sampling points x 2 bytes and the channel amplitude value, and the difference channel amplitude sampling value length is equal to the number of sampling points x 2 bytes and the channel amplitude value.
Step S303: and taking out the radar video data from the structural body and assigning the radar video data to the three-dimensional array. The three-dimensional array stores radar video data which are acquired by a current frame, wherein the radar video data comprise a distance, an azimuth and an amplitude, the distance is a sampling point value, and the azimuth is a pulse count value. The conversion formula between the distance and the sampling point value is as follows:
sample point value (distance 1000)/7.493;
the conversion formula between the azimuth pulse count value and the azimuth degree is as follows:
azimuth pulse count value (azimuth degree/360 degrees) 16384.
Step S304: and taking out the data set required by the two-dimensional display from the three-dimensional array, storing the data set into the two-dimensional array, and preparing for real-time display of the two-dimensional graph. Two dimensional array of numbersAccording to the data length of the two-dimensional array including the distance and the amplitude, the data length of the two-dimensional array is the length of the data set in the requested distance range, and the distance range in the two-dimensional array is the distance range (R) when the radar video is requestedr_min，Rr_max)。Rr_minIs the closest distance, R, of the radar video requestr_maxIs the furthest distance of the radar video request.
Step S305: and adding the three-dimensional array data into the array queue for caching until the cached data reaches the maximum value set by the queue, and after the queue cache reaches the maximum value, implementing a first-in first-out mode and continuously adding new frame data at the tail part of the queue.
According to the selected distance range, the data sets are matched, the data within the distance range in all buffer frames in the queue are copied to the current array, including distance, azimuth and amplitude data, and parallel data are serialized, as shown in fig. 4, to prepare for three-dimensional data playback.
Wherein the selected distance range is (R)s_min，Rs_max) Need to satisfy Rs_min≥Rr_min，Rs_max≤Rr_max。Rs_minIs the minimum selection distance, Rs_maxIs the maximum selection distance.
According to the selected distance range, copying the data in the selected frame distance range in the queue to the current array, including distance and amplitude data, to prepare for two-dimensional data playback, as shown in fig. 4.
Step S400: and performing two-dimensional graphic display on the radar video according to the two-dimensional data, and performing three-dimensional graphic display on the radar video according to the three-dimensional data.
And the two-dimensional graphic display module performs graphic display according to the cached two-dimensional data, including real-time two-dimensional data display and playback two-dimensional data display, wherein the graphic display is realized by a national instruments.
And performing characteristic analysis according to the relative relation of the distance and the amplitude by taking the X axis of the two-dimensional graph as a sampling point value of the distance and the Y axis as an amplitude value. When the radar video is displayed in real time, according to the distance range selected when the radar video is requested, the abscissa is the numerical value of the sampling point in the distance range, and the two-dimensional graph is updated in real time all the time as long as the radar video data with the correct format is received. The two-dimensional playback display of the radar video needs to be executed under the condition that the real-time display is paused, and the two-dimensional playback display comprises the following visual operations:
(1) the method can perform pause control, update and display in real time when the method is not paused, and perform playback and display when the method is paused.
(2) Any frame data stored in the buffer memory during pause can be selected for playback.
(3) A range of distances may be selected for playback.
(4) The two-dimensional graphic area can be enlarged, reduced and dragged to check details.
The three-dimensional graph display module performs graph display according to the cached three-dimensional data, all cached frame data can be played back, the graph display is based on an NI graph library and is realized by an AxCW3DGraphLib, AxCWGraph3D2 class, and the AxCWGraph3D2 class is called by a C # function.
The X axis of the three-dimensional graph is an ACP (orientation pulse counting) value of the orientation, the Y axis is a sampling point value of the distance, the Z axis is an amplitude value, and characteristic analysis is carried out according to the relation among the orientation, the distance and the amplitude. When the radar video is displayed in a three-dimensional playback mode, the two-dimensional real-time display needs to be paused, and the three-dimensional playback display comprises the following visual operations:
(1) the distance range can be selected for playback;
(2) the three-dimensional graphic area can be enlarged, reduced and dragged to check details.
According to the radar video display method provided by the embodiment, man-machine interaction operation is added, real-time display and playback analysis can be selected, the two-dimensional graph and the three-dimensional graph are displayed simultaneously, signal characteristic analysis can be performed more visually and stereoscopically, and the visual effect of analysis is improved.
When debugging and analyzing the radar video, the data are cached, the special distance range can be selected for playback analysis, the operations such as amplifying, reducing and dragging the graphic area can be carried out during the playback analysis for detail checking, the defects that hardware equipment is not beneficial to grabbing and is not convenient to catch are overcome, the analysis can be more reliably carried out, the debugging time can be saved, and the debugging efficiency is improved.
The module of the scheme is configured in a general computer and is realized by a module loading assembly mode, is not limited to special hardware equipment, replaces traditional special equipment and an oscilloscope, and is low in production and maintenance cost and low in multiplexing cost.
Example 2
Referring to fig. 5, fig. 5 is a schematic structural diagram of the radar video display device according to the present embodiment. The device includes:
a request module 10, configured to initiate a radar video request including a required data range;
the acquisition module 20 acquires radar video data;
the cache module 30 is configured to cache the radar video data in a classified manner, where the cached radar video data includes two-dimensional data and three-dimensional data;
the classifying and caching of radar video data specifically comprises the following steps:
storing the radar video data into a one-dimensional array;
copying data from the one-dimensional array into a radar video data structure;
taking out radar video data from the structure body and assigning the radar video data to a three-dimensional array;
taking out a data set required by two-dimensional display from the three-dimensional array and storing the data set into the two-dimensional array;
adding the three-dimensional array data into an array queue for caching;
and the graphic display module 40 is used for performing two-dimensional graphic display on the radar video according to the two-dimensional data and performing three-dimensional graphic display on the radar video according to the three-dimensional data.
As one embodiment, the values assigned to the three-dimensional array by the cache module 30 include distance, orientation, and magnitude; the data set required for the two-dimensional display retrieved by the buffer module 30 includes a distance and a magnitude.
As an embodiment, before sending the radar video request, the request module 10 initializes a network port requesting a radar video; configuring the requested radar video parameters; the parameters include a distance range and an orientation range; and initiating a radar video request.
In one embodiment, the buffer module 30 adds the new frame data to the tail of the array when the data buffered in the array queue reaches the maximum value set in the array queue, and deletes the data of the frame buffered first in the array queue.
As an embodiment, the two-dimensional graphic display of the graphic display module 40 includes a two-dimensional real-time display and a two-dimensional playback display, and when the two-dimensional playback display is displayed, the two-dimensional real-time display is paused; the three-dimensional graphical display of the graphical display module 40 includes a three-dimensional playback display.
As an embodiment, when the graphics display module 40 performs three-dimensional playback display, the data sets are matched according to the selected distance range, and the data within the distance range in all the buffer frames in the array queue are copied to the current array;
and when the two-dimensional playback display is carried out, the graphic display module 40 copies the data in the selected frame distance range in the array queue to the current array according to the selected distance range.
The radar video display device provided by the embodiment takes a general computer as an operation platform, collects data by a computer network card, receives and caches radar video data, analyzes the data to perform two-dimensional and three-dimensional graphic display, can perform human-computer interaction to display and select data frames and data sections, and has the advantages of less manpower resource consumption, less debugging time and lower cost compared with the traditional technical scheme that an oscilloscope or a special display device is adopted to collect and analyze radar target original signals.
Example 3
The preferred embodiment provides a computer device, which can implement the steps in any embodiment of the radar video display method provided in the embodiment of the present application, and therefore, the beneficial effects of the radar video display method provided in the embodiment of the present application can be achieved, which are detailed in the foregoing embodiments and will not be described herein again.
Example 4
It will be understood by those skilled in the art that all or part of the steps of the methods of the above embodiments may be performed by instructions or by associated hardware controlled by the instructions, which may be stored in a computer readable storage medium and loaded and executed by a processor. To this end, an embodiment of the present invention provides a storage medium, in which a plurality of instructions are stored, and the instructions can be loaded by a processor to execute the steps of any embodiment of the radar video display method provided in the embodiment of the present invention.
Wherein the storage medium may include: read Only Memory (ROM), Random Access Memory (RAM), magnetic or optical disks, and the like.
Since the instructions stored in the storage medium can execute the steps in any radar video display method embodiment provided by the embodiment of the present invention, the beneficial effects that can be achieved by any radar video display method provided by the embodiment of the present invention can be achieved, which are detailed in the foregoing embodiments and will not be described herein again.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A radar video display method is characterized by comprising the following steps:
initiating a radar video request containing a required data range;
radar video data are obtained;
classifying and caching radar video data, wherein the cached radar video data comprises two-dimensional data and three-dimensional data;
the classifying and caching radar video data specifically comprises the following steps:
storing the radar video data into a one-dimensional array;
copying data from the one-dimensional array into a radar video data structure;
taking out radar video data from the structure body and assigning the radar video data to a three-dimensional array;
taking out a data set required by two-dimensional display from the three-dimensional array and storing the data set into the two-dimensional array;
adding the three-dimensional array data into an array queue for caching;
and performing two-dimensional graphic display on the radar video according to the two-dimensional data, and performing three-dimensional graphic display on the radar video according to the three-dimensional data.
2. The radar video display method of claim 1 wherein said three dimensional array comprises distance, azimuth and amplitude; the data set required for a two-dimensional display includes distance and amplitude.
3. The radar video display method of claim 1, wherein the initiating a radar video request including the desired data range step specifically comprises:
initializing a network port requesting radar video;
configuring the requested radar video parameters; the parameters comprise a distance range and an azimuth range;
and initiating a radar video request.
4. The radar video display method of claim 1, wherein the acquiring radar video data specifically comprises the steps of:
initializing a network port for receiving a radar video request;
the radar video data is received through the communication middleware.
5. The radar video display method of claim 2, wherein when the data buffered in the array queue reaches a maximum value set in the queue, new frame data is added to the end of the queue and a frame of data buffered first in the array queue is deleted.
6. The radar video display method of claim 5, wherein the two-dimensional graphic display includes a two-dimensional real-time display and a two-dimensional playback display, and the two-dimensional real-time display is paused while the two-dimensional playback display is displayed; the three-dimensional graphical display comprises a three-dimensional playback display.
7. The radar video display method of claim 6, wherein when three-dimensional playback display is performed, data within a range of distances in all buffer frames in an array queue are copied to a current array according to a selected range of distances, matching data sets;
and when the two-dimensional playback display is carried out, copying the data in the selected frame distance range in the array queue to the current array according to the selected distance range.
8. A radar video display apparatus, characterized in that the apparatus comprises:
the request module is used for initiating a radar video request containing a required data range;
the acquisition module is used for acquiring radar video data;
the cache module is used for classifying and caching radar video data, and the cached radar video data comprises two-dimensional data and three-dimensional data;
the classifying and caching radar video data specifically comprises the following steps:
storing the radar video data into a one-dimensional array;
copying data from the one-dimensional array into a radar video data structure;
taking out radar video data from the structure body and assigning the radar video data to a three-dimensional array;
taking out a data set required by two-dimensional display from the three-dimensional array and storing the data set into the two-dimensional array;
adding the three-dimensional array data into an array queue for caching;
and the graphic display module is used for performing two-dimensional graphic display on the radar video according to the two-dimensional data and performing three-dimensional graphic display on the radar video according to the three-dimensional data.
9. A computer device, characterized in that it comprises a processor and a memory, in which a computer program is stored, which is loaded and executed by the processor to implement the radar video display method according to any one of claims 1 to 7.
10. A computer-readable storage medium, in which a computer program is stored, which is loaded and executed by a processor to implement the radar video display method according to any one of claims 1 to 7.
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