CN104898105A - Information radar target echo three dimensional display method - Google Patents
Information radar target echo three dimensional display method Download PDFInfo
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- CN104898105A CN104898105A CN201510338278.4A CN201510338278A CN104898105A CN 104898105 A CN104898105 A CN 104898105A CN 201510338278 A CN201510338278 A CN 201510338278A CN 104898105 A CN104898105 A CN 104898105A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/41—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00 using analysis of echo signal for target characterisation; Target signature; Target cross-section
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- Computer Networks & Wireless Communication (AREA)
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- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
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- Radar Systems Or Details Thereof (AREA)
Abstract
The invention discloses an information radar target echo three dimensional display method, comprising: in dependence on inputted echo data and window dimension, calculating the dimension of a render target data set; in dependence on an extraction mode and a display mode selected by a user, pretreating echo data, utilizing a vertex array to store the target data set, and constructing a corresponding index array to realize data rendering. As the demands for target echo display by users are increased, the echo data need to provide a plurality of pretreating forms, so that the users can observe a target in a plurality of modes. The rendering efficiency also needs to be improved in order to adapt for user continuously increasing demands.
Description
Technical field
The present invention relates to a kind of electronic display technology, in particular a kind of 3 D displaying method of Surveillance Radar target echo.
Background technology
The main display mode of tradition Surveillance Radar comprises the two-dimentional display modes such as P is aobvious, B aobvious, E is aobvious, A is aobvious, with the form of plane reflection target positional information spatially and parameter information.Along with the lifting of user's request, operator not only will understand the positional information of target, also needs to understand clarification of objective information, needs the strength information of acquisition target, azimuth width and distance width information etc., to the target property sentenced, and realize target identification.
Traditional A shows can react target strength information situation of change with distance in a certain orientation, but target often may cross over multiple localizer unit, and traditional A shows cannot reflect that multiple orientation is multiple apart from upper target strength situation of change simultaneously.Therefore, need a kind of 3-D display mode for the Strength Changes from display-object echo on multiple continuous print localizer unit and range unit.
There is multiple link in the embody rule of the dimension display technologies of target echo, comprising: data acquisition, data prediction, data render, viewing angle control etc. are the engineerings of a system.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of 3 D displaying method of Surveillance Radar target echo, by adopting several data pretreatment mode, clarification of objective can be shown in a variety of forms.
The present invention is achieved by the following technical solutions, the present invention includes following steps:
(1) size of post-processing object data set is calculated according to the echo data imported into and window size;
(2) according to user select extraction mode and display mode pre-service is carried out to echo data, detailed process comprises the following steps:
(21) calculating sampling interval;
(22) the extraction mode selected according to user extracts target echo data, comprises equidistant extraction, average extraction, selects and extract greatly;
(23) display mode selected according to user processes post-processing object data set: if user's selection is logarithm display, then without the need to processing direct display, if what user selected is linear display, then need, according to the linear dimensions of user's input, to show after carrying out linear transformation one by one to the data of post-processing object data centralization;
(3) use vertical array to store target data set, and the array of indexes building correspondence realize data render.
Described step (1) comprises the following steps:
(11) window size is obtained: width pixel count Win_w, height pixel count Win_h;
(12) size of the target echo data imported into is obtained: import localizer unit number Azi_N into, import range unit number into
Rng_N；
(13) size of post-processing object data set is calculated: play up localizer unit number N
azi, play up range unit number N
rngif: Azi_N>Win_w, then N
azi=Win_w, otherwise N
azi=Azi_N; If Rng_N>Win_w, then N
rng=Win_w, otherwise N
rng=Azi_N.
Described step (21) calculating sampling interval is specially:
Azimuthal spacings fAzi=Azi_N/N
azi, distance interval fRng=Rng_N/N
rn, wherein fAzi and fRng is real-coded GA.
Described step (22) is specially:
If target echo data are S
(i, j), 0≤i<Azi_N, 0≤j<Rng_N, for any one data D of post-processing object data centralization
(i, j), 0≤i<N
azi, 0≤j<N
rng, result of calculation is as follows:
(221) equidistantly extract: D
(i, j)=S
(p, q), wherein:
(222) on average extract:
Wherein:
(223) choosing is extracted greatly: D
(i, j)=max{S
(p, m), S
(p, m+1)..., S
(p, n), S
(p+1, m)..., S
(p+1, n), S
(q, m)..., S
(q, n), wherein:
In described step (23), carry out linear transformation one by one to the data of post-processing object data centralization, step is as follows:
(231) first linearization: formula is as follows:
wherein: Para is the linear dimensions that user inputs;
(232) then normalization: the maximal value D first finding out post-processing object data centralization
maxwith minimum value D
min, then the data of post-processing object data centralization are normalized one by one:
the codomain of post-processing object data set is dropped between 0 ~ 255.
Described step (3) by the data of post-processing object data centralization according to orientation main sequence, distance from the sequential storage of sequence to vertical array, and build corresponding array of indexes, color array, then data played up.
The present invention has the following advantages compared to existing technology: the present invention mainly considers the content of data prediction and data render.Along with user is to the lifting of target echo display demand, echo data needs to provide multiple preprocess form, so that user's observed object in several ways.Rendering efficiency also has to be hoisted, to adapt to the demand that user is constantly risen.The 3 D displaying method of Surveillance Radar target echo calculates the size of post-processing object data according to window size, thus achieves the coupling of target data size and window size, avoids a large amount of raw radar data and is mapped to the waste that same pixel causes; Adopt multiple extraction mode and multiple display modes to carry out pre-service to echo data, make user can object observing echo character in several ways, be convenient to user to the target property sentenced and identification; Adopt the mode rendering data of vertical array and array of indexes, disposable all data can be sent to video memory from internal memory, thus decrease the traffic of data transmission and repeat the calculated amount of apex coordinate conversion, improve the speed of display.
Accompanying drawing explanation
Fig. 1 is workflow diagram of the present invention;
Fig. 2 is the workflow diagram of data prediction of the present invention.
Embodiment
Elaborate to embodiments of the invention below, the present embodiment is implemented under premised on technical solution of the present invention, give detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
As depicted in figs. 1 and 2, the workflow of the present embodiment target echo 3 D displaying method comprises the following steps:
(1) calculate the size of post-processing object data according to screen size, generate localizer unit number and the range unit number of post-processing object data set;
(11) window size is obtained: width pixel count Win_w, height pixel count Win_h;
(12) size of the target echo data imported into is obtained: import localizer unit number Azi_N into, import range unit number Rng_N into;
(13) size of post-processing object data set is calculated: play up localizer unit number N
azi, play up range unit number N
rngif: Azi_N>Win_w, then N
azi=Win_w, otherwise N
azi=Azi_N; If Rng_N>Win_w, then N
rng=Win_w, otherwise N
rng=Azi_N.
(2) select to carry out pre-service to echo data according to user, generate post-processing object data set, idiographic flow is as follows:
(21) calculating sampling interval: azimuthal spacings fAzi=Azi_N/N
azi, distance interval fRng=Rng_N/N
rng, wherein fAzi and fRng is real-coded GA;
(22) the extraction mode selected according to user extracts target echo data:
If target echo data are S
(i, j), 0≤i<Azi_N, 0≤j<Rng_N, for any one data D of post-processing object data centralization
(i, j), 0≤i<N
azi, 0≤j<N
rng, result of calculation is as follows:
(221) equidistantly extract: D
(i, j)=S
(p, q), wherein:
(222) on average extract:
Wherein:
(223) choosing is extracted greatly: D
(i, j)=max{S
(p, m), S
(p, m+1)..., S
(p, n), S
(p+1, m)..., S
(p+1, n), S
(q, m)..., S
(q, n), wherein:
(23) display mode selected according to user processes post-processing object data set: if user's selection is logarithm display, then without the need to processing direct display, if what user selected is linear display, then need, according to the linear dimensions of user's input, to show after carrying out linear transformation one by one to the data of post-processing object data centralization;
Carry out linear transformation one by one to the data of post-processing object data centralization, step is as follows:
(231) first linearization: formula is as follows:
wherein: Para is the linear dimensions that user inputs; By linearization, achieve post-processing object data set to counting to linear conversion;
(232) then normalization: the maximal value D first finding out post-processing object data centralization
maxwith minimum value D
min, then the data of post-processing object data centralization are normalized one by one:
make the codomain of post-processing object data set drop between 0 ~ 255, be convenient to user and observe.
(3) based on vertical array rendering data: by the data of post-processing object data centralization according to orientation main sequence, distance from the sequential storage of sequence to vertical array, and build corresponding array of indexes, color array, then by using the vertical array technology of OpenGL to complete playing up of data.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. a 3 D displaying method for Surveillance Radar target echo, is characterized in that, comprises the following steps:
(1) size of post-processing object data set is calculated according to the echo data imported into and window size;
(2) according to user select extraction mode and display mode pre-service is carried out to echo data, detailed process comprises the following steps:
(21) calculating sampling interval;
(22) the extraction mode selected according to user extracts target echo data, comprises equidistant extraction, average extraction, selects and extract greatly;
(23) display mode selected according to user processes post-processing object data set: if user's selection is logarithm display, then without the need to processing direct display, if what user selected is linear display, then need, according to the linear dimensions of user's input, to show after carrying out linear transformation one by one to the data of post-processing object data centralization;
(3) use vertical array to store target data set, and the array of indexes building correspondence realize data render.
2. the 3 D displaying method of a kind of Surveillance Radar target echo according to claim 1, is characterized in that, described step (1) comprises the following steps:
(11) window size is obtained: width pixel count Win_w, height pixel count Win_h;
(12) size of the target echo data imported into is obtained: import localizer unit number Azi_N into, import range unit number Rng_N into;
(13) size of post-processing object data set is calculated: play up localizer unit number N
azi, play up range unit number N
rngif: Azi_N>Win_w, then N
azi=Win_w, otherwise N
azi=Azi_N; If Rng_N>Win_w, then N
rng=Win_w, otherwise N
rng=Azi_N.
3. the 3 D displaying method of a kind of Surveillance Radar target echo according to claim 2, is characterized in that, described step (21) calculating sampling interval is specially:
Azimuthal spacings fAzi=Azi_N/N
azi, distance interval fRng=Rng_N/N
rn, wherein fAzi and fRng is real-coded GA.
4. the 3 D displaying method of a kind of Surveillance Radar target echo according to claim 3, is characterized in that, described step (22) is specially:
If target echo data are S
(i, j), 0≤i<Azi_N, 0≤j<Rng_N, for any one data D of post-processing object data centralization
(i, j), 0≤i<N
azi, 0≤j<N
rng, result of calculation is as follows:
(221) equidistantly extract: D
(i, j)=S
(p, q), wherein:
(222) on average extract:
Wherein:
(223) choosing is extracted greatly: D
(i, j)=max{S
(p, m), S
(p, m+1)..., S
(p, n), S
(p+1, m)..., S
(p+1, n), S
(q, m)..., S
(q, n), wherein:
5. the 3 D displaying method of a kind of Surveillance Radar target echo according to claim 4, is characterized in that, in described step (23), carry out linear transformation one by one to the data of post-processing object data centralization, step is as follows:
(231) first linearization: formula is as follows:
wherein: Para is the linear dimensions that user inputs;
(232) then normalization: the maximal value D first finding out post-processing object data centralization
maxwith minimum value D
min, then the data of post-processing object data centralization are normalized one by one:
the codomain of post-processing object data set is dropped between 0 ~ 255.
6. the 3 D displaying method of a kind of Surveillance Radar target echo according to claim 1, it is characterized in that, described step (3) by the data of post-processing object data centralization according to orientation main sequence, distance from the sequential storage of sequence to vertical array, and build corresponding array of indexes, color array, then data are played up.
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Cited By (2)
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| CN108333570A (en) * | 2018-02-07 | 2018-07-27 | 北京墨迹风云科技股份有限公司 | The smooth rendering intent of radar return picture convolution and device |
| CN113486003A (en) * | 2021-06-02 | 2021-10-08 | 广州数说故事信息科技有限公司 | Enterprise data set processing method and system considering abnormal values during data visualization |
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