CN107255801B - A kind of bank base regards the processing method of radar signal to maritime patrol - Google Patents
A kind of bank base regards the processing method of radar signal to maritime patrol Download PDFInfo
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- CN107255801B CN107255801B CN201710441191.9A CN201710441191A CN107255801B CN 107255801 B CN107255801 B CN 107255801B CN 201710441191 A CN201710441191 A CN 201710441191A CN 107255801 B CN107255801 B CN 107255801B
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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
- G01S7/414—Discriminating targets with respect to background clutter
-
- 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
- G01S7/418—Theoretical aspects
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
The invention discloses a kind of bank bases to the processing method of maritime patrol view radar signal, comprising the following steps: step 1 extracts the profile on current radar immediate vicinity land, island from electronic chart data, forms multiple closed loop regions；Closed loop area quantization is M*N administrative division map matrix according to the orientation of radar signal and apart from quantified precision by step 2；Step 3 is established the sliding window for being Ln apart from width, traverses administrative division map matrix line by line, expanded to administrative division map with behavior unit；Step 4 establishes the sliding window that azimuth width is Lm, traverses administrative division map matrix by column, expanded to administrative division map with arranging for unit；Step 5 stores administrative division map matrix in a manner of binary file, and is loaded into Radar Signal Detection software；Step 6, Radar Signal Detection software loading area map file switch to M*N array, and processing are compared with array for the radar video that network receives, and reject background clutter.
Description
Technical field
The invention belongs to the softwares that radar admission terminal data processing field more particularly to bank base regard radar signal to maritime patrol
Change processing.
Background technique
In inshore, radar has a very important effect, such as to extra large surveillance radar or land and sea border defense system, civilian
VTS or harbor supervisory system etc..Other than the system of radar itself and performance, the data processing technique of radar terminal is to being
The allomeric function of system also has very big influence, for based on being observed with sea for extra large radar, land, island and
Inshore sandy beach, wave etc. can all aggravate the data processing amount of radar admission terminal, reduce data-handling efficiency, influence target
It was found that and tracking effect, eventually affect system allomeric function.
It is interested that so-called background clutter refers to that the scatterer in radar coverage is formed by but not user
Echo, existing radar enroll in terminal and have all done corresponding processing to the background clutter formed in radar detection, especially
The use of graphic data effectively reduces the treating capacity of radar data.But in practical situations, in addition to intrinsic ground beyond the region of objective existence,
Tide, sandy beach and island etc. will form new background clutter with time change, these are that intrinsic terrain data does not have
, the characteristics of in view of such background clutter, flexible and high-precision method should be sought, rejected, to reduce radar record
Take terminal data processing amount.
Summary of the invention
Goal of the invention: the problem to be solved in the present invention rejects nearly radar clutter for existing based on atural object
Deficiency present in method proposes a kind of flexible software implementation radar data processing method, can effectively reject and change over time
The background clutter of inshore radar.
Technical solution: the invention discloses a kind of bank bases to the processing method of maritime patrol view radar signal, includes the following steps:
Step 1 extracts the profile on current radar immediate vicinity land, island from electronic chart data, is formed respective
Closed loop region；
Closed loop area quantization is administrative division map matrix according to the orientation of radar signal and apart from quantified precision by step 2；
Step 3 establishes sliding window, traverses administrative division map matrix line by line, carries out administrative division map matrix apart from expansion；
Step 4, establish azimuth width be Lm sliding window, by column traverse administrative division map matrix, to administrative division map with arrange for unit into
Row expansion；
Step 5 stores administrative division map matrix in a manner of binary file, and is loaded into for radar detection target
The Radar Signal Detection unit of information extraction；
Step 6, region map file is switched to M*N array by Radar Signal Detection unit, and will pass through network UDP (number of users
According to datagram protocol) processing is compared with array the radar video that receives of transmission mode, reject background clutter.
In step 1 of the present invention, current radar center the generation method in closed loop region: is extracted from electronic chart data
The profile on neighbouring land, island, forms respective closed loop region；It indicates to constitute closed loop using geographical transit square degree form
The all the points in region, and it is stored as the file of mif format.
In step 2 of the present invention, the generation method of administrative division map matrix T: establishing rectangular coordinate system centered on radar, by mif
Latitude and longitude coordinates in file are converted to the rectangular co-ordinate (X, Y) of opposite radar center；Polar coordinate system is established centered on radar,
Coordinate plane is divided into the matrix T of M*N, wherein M is orientation quantized value, and N is apart from quantized value；The i-th row of judgment matrix T, jth
Whether column element T (i, j) is located in closed area, is 1 if it is T (i, j), and otherwise T (i, j) is 0.
In step 3, administrative division map matrix apart from expanding method: establish width be LnApart from sliding window, from administrative division map matrix
0 to M-1 row traversed line by line, in the i-th row, when T (i, j-1) be 0 when, and T (i, j) be 1 when, then n before arranging j
A element is assigned a value of 1；When T (i, j) be 1 when, and T (i, j+1) be 0 when, then n element after T (i, j) is assigned a value of
1。
In step 4 of the present invention, the orientation expanding method of administrative division map matrix: establishing width is LmOrientation sliding window, from region
Figure matrix 0 to N-1 column traversed by column, in jth row, when T (i-1, j) be 0 when, and T (i, j) be 1 when, then by i
M element is assigned a value of 1 before；When T (i, j) be 1 when, and T (i+1, j) be 0 when, then by m element after T (i, j)
It is assigned a value of 1；
In step 6 of the present invention, radar ground clutter elimination method are as follows: Radar Signal Detection unit loading area map file,
Switch to M*N array and deposits the radar video for being managed, and network being received according to same azran quantitative relationship inside
It is managed, by being compared with the element one by one in administrative division map matrix, realizes the rejecting of background clutter.
In the present invention, Radar Signal Detection unit can use software generally in the art, such as may refer to " software implementation
The design and realization of Radar Signal Detection system ", " Chinese New Products " 2009 (19).
The utility model has the advantages that compared with prior art, the invention has the following advantages that the 1, present invention is using from electronic chart
The terrain data of middle extraction, precision are high；2, the present invention is very flexible to the processing of terrain data, and sliding window size can be adjusted flexibly,
To adapt to the landform or ambient conditions of different time points；3, the present invention handles terrain data, spirit using software method
It is living efficient.
Detailed description of the invention
Fig. 1 is technical solution of the present invention flow chart；
Fig. 2 electronic chart initial data used in the examples；
The administrative division map formed in Fig. 3 embodiment from the coastline data in electronic chart；
The administrative division map formed in Fig. 4 embodiment using the present invention.
Specific embodiment
With reference to the accompanying drawings and detailed description, the present invention is furture elucidated.
The invention discloses a kind of bank bases to the processing method of maritime patrol view radar signal, includes the following steps:
Step 1 extracts the profile on current radar immediate vicinity land, island from electronic chart data, is formed respective
Closed loop region；
Closed loop area quantization is administrative division map matrix according to the orientation of radar signal and apart from quantified precision by step 2；
Step 3 establishes sliding window, traverses administrative division map matrix line by line, carries out administrative division map matrix apart from expansion；
Step 4, establish azimuth width be Lm sliding window, by column traverse administrative division map matrix, to administrative division map with arrange for unit into
Row expansion；
Step 5 stores administrative division map matrix in a manner of binary file, and is loaded into for radar detection target
The Radar Signal Detection unit of information extraction；
Step 6, region map file is switched to M*N array by Radar Signal Detection unit, and passes through network UDP transmission mode
Processing is compared with array for the radar video received, rejects background clutter.
The generation method in closed loop region: current radar immediate vicinity land, island are extracted from electronic chart data
Profile forms respective closed loop region；The all the points in composition closed loop region are indicated using geographical transit square degree form, and
It is stored as the file of mif format.
In step 2, the generation method of administrative division map matrix T: establishing rectangular coordinate system centered on radar, will be in mif file
Latitude and longitude coordinates be converted to the rectangular co-ordinate (X, Y) of opposite radar center；Polar coordinate system is established centered on radar, by coordinate
Plane is divided into the matrix T of M*N, and wherein M is orientation quantized value, and N is apart from quantized value；The i-th row, the jth column element of judgment matrix T
Whether T (i, j) is located in closed area, is 1 if it is T (i, j), and otherwise T (i, j) is 0.
In step 3, administrative division map matrix apart from expanding method: establish width be LnApart from sliding window, from administrative division map matrix
0 to M-1 row traversed line by line, in the i-th row, when T (i, j-1) be 0 when, and T (i, j) be 1 when, then n before arranging j
A element is assigned a value of 1；When T (i, j) be 1 when, and T (i, j+1) be 0 when, then n element after T (i, j) is assigned a value of
1。
In step 4, the orientation expanding method of administrative division map matrix: establishing width is LmOrientation sliding window, from administrative division map matrix
0 to N-1 column traversed by column, in jth row, when T (i-1, j) is 0, and when T (i, j) is 1, then by m before i
Element is assigned a value of 1；When T (i, j) be 1 when, and T (i+1, j) be 0 when, then m element after T (i, j) is assigned a value of 1；
In step 6, radar ground clutter elimination method are as follows: Radar Signal Detection unit loading area map file switchs to M*
Deposit the radar video for being managed, and network being received carries out pipe according to same azran quantitative relationship to N array inside
Reason, by being compared with the element one by one in administrative division map matrix, realizes the rejecting of background clutter.
Embodiment
As shown in Figure 1, being the flow chart of technical solution of the present invention.The present embodiment is using civil electronic sea chart as initial data
Source, and maritime patrol is combined depending on the echo of radar detection with practical bank base, technical solution of the present invention is described in detail.
Step 1 extracts the profile on current radar immediate vicinity land, island from civil electronic chart data, is formed
Multiple closed loop regions.
In the present embodiment, as shown in Fig. 2, extracting seashore line profile from original civil electronic sea chart, it is stored in mif text
In part, multiple closed loop regions are stored in mif file, there are three above latitude and longitude coordinates points to constitute for each closed area, file
Format is as follows:
Regionr1/r7
117.7926/24.472723
117.78839/24.478531
117.78758/24.484724
117.7919/24.479704
117.8/24.473101
117.79879/24.467581
117.7926/24.472723
Wherein, Regionr1/r7 indicates that the closed area is made of 7 coordinate points, and 117.7926/24.472723 is indicated
The longitude of current coordinate point is 117.7926 °, and latitude is 24.472723 °.
Closed loop area quantization is M*N administrative division map square according to the orientation of radar signal and apart from quantified precision by step 2
Battle array.
In the present embodiment, rectangular coordinate system is established centered on radar first, the latitude and longitude coordinates in mif file are turned
It is changed to the rectangular co-ordinate (X, Y) of opposite radar center, unit is rice；Then polar coordinate system is established centered on radar, by coordinate
Plane be divided into M*N matrix T (M be orientation quantized value, value 8192；N is apart from quantized value, value 4096, unit 60
Rice)；Finally judge whether T (i, j) is located in closed area again, be 1 if it is T (i, j), otherwise T (i, j) is 0, forming region
Figure matrix T0, as shown in Figure 3.
Step 3, establish apart from width be Ln sliding window, line by line traverse administrative division map matrix, to administrative division map with behavior unit into
Row expansion；
In the present embodiment, 16 (i.e. distance above expands outwardly 16*60=960 meters) are chosen for apart from width, from administrative division map
0 to 8191 rows of matrix T0 are traversed line by line, in the i-th row, when T (i, j-1) be 0 when, and T (i, j) be 1 when, then by j
3 elements are assigned a value of 1 before；When T (i, j) be 1 when, and T (i, j+1) be 0 when, then 3 elements after j are assigned a value of
1；T1 will be stored as apart from expansion results.
Step 4, establish azimuth width be Lm sliding window, by column traverse administrative division map matrix, to administrative division map with arrange for unit into
Row expansion；
In the present embodiment, azimuth width is chosen for 3 (0.132 ° of 3*360/8192 ≈ is expanded outwardly in orientation), from area
Domain figure matrix T1 0 to 4095 column traversed by column, jth column in, when T (i-1, j) be 0 when, and T (i, j) be 1 when,
8 elements before i are then assigned a value of 1；When T (i, j) be 1 when, and T (i+1, j) be 0 when, then by 8 after T (i, j)
Element is assigned a value of 1；Orientation expansion results are stored as T2, as shown in Figure 4；
Step 5 stores administrative division map matrix in a manner of binary file, and is loaded into Radar Signal Detection software；
In the present embodiment, Radar Signal Detection software is located at backstage, in administrative division map software in foreground formation zone picture and text
After part, since data are larger, inspection software is transmitted to using FTP.
Step 6, Radar Signal Detection software loading area map file, switchs to M*N array, and the thunder that network is received
Processing is compared with array up to video, rejects background clutter.
In the present embodiment, Radar Signal Detection software reading area map file switchs to the array of 8192*4096, inside
One mapping table of middle formation is deposited, when software receives radar video data, obtains video orientation first, it then should by orientation
Video data in orientation is compared with mapping table, if mapping table intermediate value is 1, can be given up the pixel value, thus
Achieve the purpose that reject background clutter.
The present invention uses software implementation mode, and quasi real time generation, transmission and using area figure, flexible and efficient, and administrative division map is existed
It orientation and is expanded on, background clutter mode is rejected based on geodata compared to traditional, can preferably solve to carry on the back
The problem that scape clutter can be changed at any time, the administrative division map for expanding front and back compare as shown in Figure 3 and Figure 4.
Claims (2)
1. a kind of bank base is to the processing method of maritime patrol view radar signal, which comprises the steps of:
Step 1 extracts the profile on current radar immediate vicinity land, island from electronic chart data, forms respective close
Ring region；
Closed loop area quantization is administrative division map matrix according to the orientation of radar signal and apart from quantified precision by step 2；
Step 3, establishing width is Ln apart from sliding window, traverses administrative division map matrix line by line, carries out administrative division map matrix apart from swollen
It is swollen；
Step 4, establish azimuth width be Lm sliding window, by column traverse administrative division map matrix, to administrative division map matrix with arrange for unit into
Row expansion；
Step 5 stores administrative division map matrix in a manner of binary file, and is loaded into for radar detection target information
The Radar Signal Detection unit of extraction；
Step 6, region map file is switched to M*N array by Radar Signal Detection unit, and will be connect by network UDP transmission mode
Processing is compared with array for the radar video received, rejects background clutter；
In step 1, current radar immediate vicinity land, island the generation method in closed loop region: are extracted from electronic chart data
The profile of small island forms respective closed loop region；The all the points in composition closed loop region are indicated using geographical coordinate longitude and latitude form, and
It is stored as the file of mif format；
In step 2, the generation method of administrative division map matrix T: establishing rectangular coordinate system centered on radar, by the file of mif format
In latitude and longitude coordinates be converted to the rectangular co-ordinate (X, Y) of opposite radar center；Polar coordinate system is established centered on radar, will be sat
Mark plane is divided into the administrative division map matrix T of M*N, and wherein M is orientation quantized value, and N is apart from quantized value；Judge administrative division map matrix T's
Whether the i-th row, jth column element T (i, j) are located in closed loop region, are 1 if it is T (i, j), and otherwise T (i, j) is 0；
In step 3, administrative division map matrix apart from expanding method: establish width be Ln apart from sliding window, from the 0 of administrative division map matrix
It is traversed line by line to M-1 row, in the i-th row, when T (i, j-1) is 0, and when T (i, j) is 1, then n before arranging j
Element is assigned a value of 1；When T (i, j) be 1 when, and T (i, j+1) be 0 when, then n element after element T (i, j) is assigned a value of
1；
In step 4, the orientation expanding method of administrative division map matrix: the orientation sliding window that width is Lm is established, from the 0 of administrative division map matrix
It is traversed by column to N-1 column, it is when T (i-1, j) is 0, and when T (i, j) is 1, then first by m before i in jth column
Element is assigned a value of 1；When T (i, j) be 1 when, and T (i+1, j) be 0 when, then m element after T (i, j) is assigned a value of 1.
2. the method according to claim 1, wherein in step 6, radar clutter elimination method are as follows: radar
Detecting signal unit loading area map file switchs to M*N array and deposits the radar video for being managed, and network being received inside
It is managed according to same azran quantitative relationship, by being compared with the element one by one in administrative division map matrix, realizes
The rejecting of background clutter.
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| US5264855A (en) * | 1993-02-09 | 1993-11-23 | The United States Of America As Represented By The Secretary Of The Air Force | Technique for stationary radar target discrimination |
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