CN104199000B - Sexual intercourse clutter and banding interference elimination method in a kind of multi-sensor detection region - Google Patents
Sexual intercourse clutter and banding interference elimination method in a kind of multi-sensor detection region Download PDFInfo
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- CN104199000B CN104199000B CN201410480202.0A CN201410480202A CN104199000B CN 104199000 B CN104199000 B CN 104199000B CN 201410480202 A CN201410480202 A CN 201410480202A CN 104199000 B CN104199000 B CN 104199000B
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- clutter
- sexual intercourse
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- evolution
- weight matrix
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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
- G01S7/28—Details of pulse systems
- G01S7/285—Receivers
- G01S7/292—Extracting wanted echo-signals
-
- 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
- G01S7/35—Details of non-pulse systems
- G01S7/352—Receivers
- G01S7/354—Extracting wanted echo-signals
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/10—Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation
Abstract
The invention discloses sexual intercourse clutter and the elimination method of banding interference in a kind of multi-sensor detection region, this technology belongs to the environment clutter in radar data process field and rejects pretreatment.The occluding technique of sexual intercourse clutter and banding interference is one problem of radar data process field, and existing method is all the processing method resting on signal aspect, and can not well completely inhibit this type of clutter in practice.The present invention, according to the characteristic of this type of clutter, builds weight matrix and evolution weight matrix in measuring region, is amplified by the region characteristic of clutter measuring point, it is possible to effectively determines clutter regional location, is accurately rejected by this region clutter；And algorithmic procedure is the easiest, engineer applied ensure that preferable real-time, there is application value.
Description
Technical field
The present invention relates to the environment clutter elimination method in radar data process field, it is adaptable to various miscellaneous in information fusion system
Ripple pretreatment system.
Background technology
When there is sexual intercourse weather in sensor lift-off work or search coverage, powerful sexual intercourse clutter can be faced, especially work as mesh
When mark is in sexual intercourse clutter district, sensor detection performance can be severely impacted.In data analysis layer face, sexual intercourse clutter shows as
The measuring point that in certain area, density is the highest, can exist in multiple search coverages, thus form a plurality of false track, be unfavorable for
The formation of object space entirety situation.For solving this problem, domestic and international expert it is also proposed a lot of method, but is all to rest on letter
The processing method of number aspect, for example with to reducing attached lobe clutter amplitude, improving the methods such as signal to noise ratio.But these methods are in reality
In can not well completely inhibit sexual intercourse clutter and banding interference, it is still necessary to radar data process aspect to this two classes clutter
Suppress and reject, the requirement of practical implementation could be met.
Summary of the invention
1. to solve the technical problem that
It is an object of the invention to provide a kind of elimination method that in radar data process aspect, sexual intercourse clutter and banding can be disturbed.
Clutter, according to the characteristic of this type of clutter, by building weight matrix and evolution weight matrix in measuring region, is measured by the method
The region characteristic of point amplifies, it is possible to effectively determine clutter regional location, is accurately rejected by this region clutter.It addition, the party is owned by France
In clutter pretreatment, and algorithmic procedure is the easiest, ensure that preferable real-time in engineer applied.
2. technical scheme
Sexual intercourse clutter and the elimination method of banding interference in a kind of multi-sensor detection region of the present invention, due to sexual intercourse clutter
Elimination method essentially identical with the elimination method that banding is disturbed, here as a example by the elimination method of sexual intercourse clutter, including following skill
Art measure: first, by under the Transformed Measurement of each sensor to fusion center coordinate system, takes the value of all measurements, determines
One rectangle measures region；Then, rectangle measures region needs to carry out piecemeal by task, and calculates each little rectangle after piecemeal
The number of measuring point in region, determines weight matrix and evolution weight matrix；Finally, by each yuan in evolution weight matrix
Element compares with the expected value of weighting, determines whether the measurement in little rectangular area is sexual intercourse clutter and rejects.
3. beneficial effect
(1) in the method can effectively determine measurement region, sexual intercourse clutter or the clutter point position of banding interference, reject sexual intercourse exactly
The clutter of clutter and banding interference measures；
(2) the method simple flow, amount of calculation is little, be easily achieved, it is ensured that good real-time.
Accompanying drawing explanation
Figure of description 1 is the flow chart that sexual intercourse clutter of the present invention is rejected；
Figure of description 2 is to measure area schematic；
Figure of description 3 is to measure area dividing matrix schematic diagram.
Detailed description of the invention
Below in conjunction with Figure of description, the present invention is described in further detail.With reference to Figure of description, sexual intercourse clutter of the present invention and
The rejecting process of banding interference divides following step:
The rejecting step of sexual intercourse clutter:
(1) calculate device 1 and receive the measurement of each sensor, by under all Transformed Measurements to fusion center coordinate system, obtain all measurements
Z(k)。
(2) calculate device 2 receive from calculate device 1 output result, and by search obtain x, y direction measure maximum and
The set of minimaBased on ExyK () builds rectangle A as shown in Figure 2.
And open up memory space in storage device 3, temporary Exy(k)。
(3) calculate the output result of device 4 receiving/storing device 3, according to Fig. 3, A is divided into multiple fritter rectangle, utilizes square
The definition of shape B measures matrix of areas
Re(k)={ aij(k) } i=1,2 ..., Lx(k)；J=1,2 ... Ly(k) (1)
In formula, Lx(k) and LyK () is respectively rectangle B number of pocket on x, y direction, its value depends on that reality follows the tracks of system
System and mission requirements.
(4) calculate device 5 and receive the output result calculating device 1 with calculating device 4, based on aijK the number measured in () determines power
Value, the weight matrix of definition B is
We(k)={ wij(k) } i=1,2 ..., Lx(k)；J=1,2 ... Ly(k) (2)
In formula, wijK the initial value of () is zero.During Z (k) is circulated operation, fall into a whenever there being a measurementijIn (k),
Then perform wij(k)=wij(k)+1。
(5) calculate device 6 and receive the output result calculating device 5, for ease of distinguishing sexual intercourse clutter and common clutter, pass through at this into
Change the level of confidentiality characteristic of weight matrix further sexual intercourse clutter.Definition aijThe evolution weights of (k)For wij(k) and aij(k) adjacent region
The weights sum in territory, i.e.
Therefore, the evolution weight matrix of B is
(6) calculate device 7 and receive the output result calculating device 6, calculate weights of averagely evolving.Defined herein average evolution weights are
In formula,Number for the pocket that evolution weights are not zero.
(7) calculate device 8 and receive the output result calculating device 6 with calculating device 7, willWith weightingCompare.
Owing to the level of confidentiality degree of sexual intercourse clutter is far above other targets and clutter, if therefore
Then retain the measurement in aij (k), otherwise by aijK the measurement in () is rejected as sexual intercourse clutter.Wherein b is for rejecting coefficient, generally
In the case ofFor evolution maximum weight value), concrete value is relevant with target environment.Note is needed at this
Meaning, when there is formation target in target environment, weeds out as sexual intercourse clutter for avoiding measuring forming into columns, the value of b
Should be relatively large.
The rejecting step of banding interference:
Owing to the expression mode of banding interference is the fan-shaped close quarters that measures centered by sensor, therefore concrete deleting madel with
Sexual intercourse clutter deleting madel is similar, does not repeats them here, but should be noted that following three points at this:
(1) the rejecting process of banding interference completes under the local coordinate system of each sensor；
(2) search coverage is divided into by banding interference deleting madel the narrowest multiple sector；
(3) in banding interference deleting madel, the foundation of search coverage weight matrix and evolution weight matrix completes in polar coordinate.
Claims (1)
1. sexual intercourse clutter and banding interference elimination method in a multi-sensor detection region, it is characterised in that include techniques below measure:
(1) set up and measure the weight matrix in region and evolution weight matrix, use following technical measures step: by search obtain x,
Y direction measures maximum and the set of minimaBased on ExyK () builds
Rectangle A, and A is divided into multiple fritter rectangle measure region B, definition measures region B and is
Re(k)={ aij(k) } i=1,2 ..., Lx(k)；J=1,2 ... Ly(k), wherein Lx(k) and LyK () is respectively rectangle B in x, y side
The upwards number of pocket, its value depends on reality tracking system and mission requirements, aijK () is corresponding i-th row, jth row
Fritter rectangle；And then based on aijK the number measured in () determines that weights, definition measure the weight matrix of region B and are
We(k)={ wij(k) } i=1,2 ..., Lx(k)；J=1,2 ... Ly(k)
For ease of distinguishing sexual intercourse clutter and common clutter, at this by the level of confidentiality characteristic of evolution weight matrix further sexual intercourse clutter；
Definition aijThe evolution weights of (k)For wij(k) and aijThe weights sum of (k) adjacent area, i.e.
Therefore, the evolution weight matrix of B is
(2) calculating of average evolution weights and reject the determination of coefficient, uses following technical measures step: calculate weights of averagely evolving
In formula,Number for the pocket that evolution weights are not zero；WillWith weightingCompare, if
Then retain aijK the measurement in (), otherwise by aijK the measurement in () is rejected as sexual intercourse clutter；
B is for rejecting coefficient, under normal circumstances For evolution maximum weight value, concrete value and target
Environment is relevant；It should be noted that at this when target environment exists formation target, for avoid form into columns measure as
Sexual intercourse clutter weeds out, and the value of b should be relatively large.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410480202.0A CN104199000B (en) | 2014-09-18 | 2014-09-18 | Sexual intercourse clutter and banding interference elimination method in a kind of multi-sensor detection region |
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| CN201410480202.0A CN104199000B (en) | 2014-09-18 | 2014-09-18 | Sexual intercourse clutter and banding interference elimination method in a kind of multi-sensor detection region |
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| CN104199000B true CN104199000B (en) | 2016-11-30 |
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| GB2387053B (en) * | 2001-11-12 | 2006-02-01 | Telstra Corp Ltd | Surface wave radar |
| CN101865995B (en) * | 2010-05-05 | 2012-05-23 | 南京莱斯信息技术股份有限公司 | Processing method of airport radar signals |
| CN103364764B (en) * | 2013-06-25 | 2015-06-17 | 西安电子科技大学 | Airborne radar non-stationary clutter suppression method |
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Inventor after: Wang Haipeng Inventor after: Xiong Wei Inventor after: Wang Cong Inventor after: Pan Xinlong Inventor after: Liu Yu Inventor after: Xu Congan Inventor after: Xia Shutao Inventor after: Wang Ziling Inventor before: Xiong Wei Inventor before: Wang Cong Inventor before: Wang Haipeng Inventor before: Shu Congan Inventor before: Liu Yu Inventor before: Xia Shutao Inventor before: Wang Ziling Inventor before: Pan Xinlong |
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