CN107271970B - A kind of radar co-interfere method based on distributed platform - Google Patents
A kind of radar co-interfere method based on distributed platform Download PDFInfo
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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
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- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
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Abstract
The invention belongs to radar co-interfere technical fields, are related to a kind of radar co-interfere method based on distributed platform.How method of the invention is used in combination the mode co-interfere radar of compacting and deception mainly when by threat radar, between the platform in multi-platform troop.When interfering radar scanning, as how as few as possible jamming emitter forms the interference covering of the fan comprising all platforms.When some platform is by radar tracking, according to the distribution situation of other platforms, mark off other platforms can cooperate with the interference of tracked platform region and it is final according to enemy radar position determine specifically can co-interfere platform and the conflicting mode that should take；Method of the invention is particularly suitable for hip-based platform use.
Description
Technical field
The invention belongs to radar co-interfere technical fields, are related to a kind of radar co-interfere side based on distributed platform
Method.
Background technique
At one by multiple distributed platforms that there is independent interference radar ability to form, due to each platform itself
Interference performance is limited, possibly can not play good interference effect, at this moment the co-interfere between platform is just particularly important.
The operating mode of radar generally comprises two aspect of scanning and tracking.Outgoing execution task opposes radar to our platform
Region carries out scout scan.When radar scanning is interfered in compacting, several particular platforms in platform are targetedly selected
Compacting, can effectively increase interference covering of the fan.And the case where pressing type interference is used together compared to all platforms, it can be with
Reduce extra jamming emitter.
When some platform is found and tracked by radar, other platforms can cooperate with tracked platform to carry out radar
Interference.But interference or cheating interference no matter are suppressed, the platform and tracked platform for requiring collaboration are in same radar beam model
In enclosing, the effect of co-interfere otherwise can not be played.It just needs according to the location of enemy's radar at this time, selecting can specifically assist
Same platform, and further determine that using pressing type interference or Deceiving interference.
The relevant research achievement of combined type radar co-interfere is less at present, most of to be only based solely on pressing type or take advantage of
Deceive the jamming exposure area of formula, and shorter mention it is multi-platform between collaboration.
Summary of the invention
The technical problem to be solved by the present invention is to, when by threat radar, between the platform in multi-platform troop why
The mode co-interfere radar of compacting and deception is used in combination in sample.When interfering radar scanning, such as how as few as possible interference
Radiation source forms the interference covering of the fan comprising all platforms.When some platform is by radar tracking, according to the distribution feelings of other platforms
Condition, the region of tracked platform interference can be cooperateed with and finally specifically may be used according to the determination of enemy radar position by marking off other platforms
The platform of co-interfere and the conflicting mode that should be taken；Method of the invention is particularly suitable for hip-based platform use.
The present invention is provided in order to solve the above problem, and the technical scheme comprises the following steps:
A kind of radar co-interfere method based on distributed platform, this method are tracked for a certain platform by radar scanning
When, according to the distribution situation of all platforms, the region of tracked platform interference can be cooperateed with and according to target by marking off other platforms
The determination of radar position can co-interfere platform and the conflicting mode that should take, equipped with jammer on each platform,
It is characterized in that,
When by radar scanning, comprising the following steps:
S1, the jamming power that each platform in distributed platform enters radar receiver input terminal is obtained:
Wherein, PjFor platform interference source transmission power；For interference source antenna gain function；Gt(θ) is radar reception
The gain function of antenna；λ is interference signal wavelength；γjIt is interference signal to the polarization loss of radar antenna；BrFor radar reception
Machine bandwidth；RjFor the distance of radar to interference source；BjFor jamming signal bandwidth；LjFor the interference source transmission loss factor；Setting interference
Antenna main lobe is directed at radar direction always, i.e.,
S2, the radar return power for obtaining each platform in distributed platform:
Wherein, PtFor radar transmission power；RtFor the distance on naval vessel to radar；LsFor Radar Signal Transmission fissipation factor；σ
For the effective sectional area of platform；
S3, the effective interference covering of the fan θ for obtaining each platforms:
According to the radar return power that the step S1 jamming power obtained and step S2 obtain, each platform P is calculatedrj/Ps
=KjWhen corresponding radar receiving antenna gain Gt(θ):
θ is calculated according to above formula, to obtain effectively interference covering of the fan θsAre as follows:
θs=2 θ
S4, least interference covering of the fan is obtained:
According to effective interference covering of the fan θ of the step S3 each platform obtainedsAnd the actual distribution positional relationship of platform,
Least interference covering of the fan ψ needed for covering all platforms is obtained according to geometrical principle, as shown in Figure 2；
S5, the collaborative platform for determining specific implementation compacting interference:
s.t.F≥ψ
θisFor effective interference covering of the fan of each platform of specific implementation compacting interference, subscript i is that the collaborative platform of selection is compiled
Number.
When by radar tracking, comprising the following steps:
Area and miscoordination area are cooperateed between two S6, acquisition platforms:
If be tracked platform be G, collaborative platform A, tracking radar B, using be tracked platform G as coordinate origin, by with
Straight line where track platform G and collaborative platform A is X-axis, establishes rectangular coordinate system, and radar beam center, which is directed toward, is tracked platform G, BG
It is radar beam center line, for collaborative platform A in same radar beam, BA is the boundary line of radar beam width,Be BG and
The angle of AB two lines is the half of radar beam width, as shown in Figure 3.
It can be obtained by sine:
If ∠ BGA=θ,Substituting into above formula can obtain:
Due to the position of A, G platform be it is known, in institute's above formula AG be known quantity, what is obtained is the relational expression of BG and θ；
Wherein BG is the critical distance of radar and tracked platform when A, G warship are just in same radar beam under current θ value, and being less than should
Then A, G platform not in same radar beam and then cannot achieve co-interfere to value, be greater than the value then A, G in same radar beam
It is interior and then co-interfere may be implemented；
It enables:
The coordinate value of enemy's radar when A, G platform are just in same radar beam under current angular θ can be obtained；
S7, angle, θ π from 0 to 2 is enabled successively value and to substitute into the calculating formula of BG, the point that each angle, θ is obtained at equal intervals
Connection is to get to the line of demarcation for cooperateing with area and miscoordination area of A, G platform；Simulation result is as shown in Fig. 4, wherein " o " generation
Table center warship G, " * " represent escort vessel A, and two circles of two sides are the critical line that A, G warship can cooperate with area and miscoordination area.When
When opposing radar in two round domains, A, G warship, can not co-interferes not in same radar beam；When enemy's radar is located at two
When circle is overseas, A, G warship, can co-interferes in same radar beam.Attached drawing 5 is can be obtained into the amplification of attached drawing 4；
S8, find out tracked platform and any platform cooperate with area, and combine；
S9, the region according to locating for enemy's radar, determination specifically can be with the platform of co-interfere；
S10, co-interfere mode is determined, specifically:
The disturbance suppression ratio J/S of S101, radar receiver input terminal are as follows:
Wherein, Pt(W)、GtIt (dB) is respectively radar transmission power and antenna gain；σ(m2) be target radar cross section；
RjIt (m) is the distance between radar and jammer；Pj(W)、GjIt (dB) is respectively interference transmission power and antenna gain；Gt(dB)
For radar antenna interference radiating way gain；γjFor the polarization mismatch loss coefficient of interference signal and radar signal；RtIt (m) is thunder
Up to the distance between with target；
S102, the total disturbance suppression ratio for calculating radar receiving end
In formula, i is the platform quantity of co-interfere together, a shared n, there was only R in above formulatFor unknown number, work as thunder
Reach the R after determinationjiIt can be expressed as RtFunction；
S103, orderIt is counter to solve RtSeparation as compacting interference and cheating interference；
S104, it is greater than R when radar and tracked platform spacingtThe interference of Shi Caiyong pressing type, is less than RtIt is dry that Shi Caiyong cheats formula
It disturbs.
The invention has the advantages that being given compound between the platform in multi-platform troop when by threat radar
Use the method for the mode co-interfere radar of compacting and deception.
Detailed description of the invention
Fig. 1 the method for the present invention flow chart
Minimum covering of the fan explanatory diagram needed for Fig. 2 covers all platforms
Platform, collaborative platform and enemy's radar site relational graph are tracked in Fig. 3 step (2)
Collaboration/miscoordination zoning component of Fig. 4 A, G platform
Collaboration/miscoordination Division partial enlarged view of Fig. 5 A, G platform
Fig. 6 emulates a platform distribution map
Fig. 7 emulates a result figure
Fig. 8 emulates a result partial enlarged view
Fig. 9 emulates one 90 ° of range areas and divides schematic diagram
Figure 10 emulates two platform distribution maps
Figure 11 emulates two result figures
Figure 12 emulates two result partial enlarged views
Figure 13 emulates 2 45 ° of range areas and divides schematic diagram
Specific embodiment
The present invention is further explained in the following with reference to the drawings and specific embodiments.
For method of the invention is applied to hip-based platform, these embodiments are interpreted as being merely to illustrate the present invention
Rather than it limits the scope of the invention.After having read the content of the invention recorded, those skilled in the art can be with
The present invention is made various changes or modifications, these equivalence changes and modification equally fall into model defined by the claims in the present invention
It encloses.
Emulation one
Assuming that enemy's radar is airborne fire control radar, radar beam width is 3 °, antenna gain " flat " in beam angle,
That is Gt(θ)=Gt.Our fleet's formation is as shown in Fig. 6, and using A warship as the center of circle, other 6 warships are spacedly distributed is in radius
On the circle of 50Km, enemy's airborne fire control radar is in front of the fleet at 200Km.Assuming that the jamming power on every naval vessel, interference antenna increase
It is beneficial same.Effective interference covering of the fan θ on every naval vesselsTwice of radar beam width, i.e., 6 ° are equal to, needed for entire fleet
15 ° of ≈ of least interference covering of the fan ψ=arcsin (50/200).By formula (5) it is found that at least needing 3 warship compacting radars in fleet
Can make interfere covering of the fan include entire fleet, from the specific formation of fleet it can be concluded that tri- warships of B, F, G using compacting interfere come pair
Anti- radar scanning.
Assuming that A warship, by enemy's radar tracking, other warships collaboration A warship is interfered.Find out first B~G warship respectively with A warship can
Area is cooperateed with, and is combined, simulation result is as shown in Fig. 7.Due to the limitation of the conditions such as line-of-sight propagation, radar working distance is opposed
From it is not possible that infinitely great, it is assumed that maximum functional distance is 360Km.By attached drawing 7 using A warship as the center of circle, 360Km is that the region of radius is put
Attached drawing 8 is obtained greatly.From attached drawing 8 as it can be seen that finally obtained region division also has symmetrically since fleet's formation has symmetry
Property only takes the region wherein within the scope of 90 ° to be analyzed, other regions can be obtained a result with analogy.The 90 ° of range areas taken out
Be divided into 6 pieces of zonules altogether, number respectively 1.~6. and be drawn as the form of schematic diagram, as shown in Fig. 9.It is every to analyze below
The naval vessel that specifically A warship can be cooperateed with to be interfered in block zonule.
1. number 1. number region cooperates with area and D warship cooperateing in area to A warship to A warship in G warship, so when enemy's radar is
When region, G, D warship can cooperate with A warship to be interfered.
2. number region cooperateing in area to A warship in D warship, so D warship can cooperate with A when opposing radar at 2. number region
Warship is interfered.
3. number region is not in an any warship cooperateing in area to A warship, so not having when opposing radar at 3. number region
Other warships can cooperate with A warship, can only A warship itself take jamming countermeasure.
4. number region cooperateing in area to A warship in E warship, so E warship can cooperate with A when opposing radar at 4. number region
Warship is interfered.
5. number 5. number region cooperates with area and E warship cooperateing in area to A warship to A warship in B warship, so when enemy's radar is
When region, B, E warship can cooperate with A warship to be interfered.
6. number region is not in an any warship cooperateing in area to A warship, so not having when opposing radar at 6. number region
Other warships can cooperate with A warship, can only A warship itself take jamming countermeasure.
Specific conflicting mode in each region, substituting into formula (10) calculating according to the actual situation, you can get it.
Emulation two
Radar parameter is with emulation one, our fleet's formation is as shown in Fig. 10, and using A warship as the center of circle, B~E warship divides at equal intervals
It is distributed on the circle that radius is 13Km, F, G warship are distributed on the circle that radius is 45Km, oppose airborne fire control radar in front of fleet
At 200Km.Assuming that the jamming power of every warship, interference antenna gain are all.Effective interference covering of the fan θ of every warshipsIt is equal to
Twice of radar beam width, i.e., 6 °, 13 ° of ≈ of least interference covering of the fan ψ=arcsin (45/200) needed for entire fleet.By formula
(5) it is found that at least needing 3 warship compacting radars that can just make to interfere covering of the fan to include entire fleet in fleet, from the specific team of fleet
Shape is it can be concluded that tri- warships of E, F, G fight radar scanning using compacting interference.
Assuming that A warship, by enemy's radar tracking, other warships collaboration A warship is interfered.Find out first B~G warship respectively with A warship can
Area is cooperateed with, and is combined, simulation result is as shown in Fig. 11.The farthest operating distance of radar is opposed as with emulation one, if
For 360Km.By attached drawing 10 using A warship as the center of circle, 360Km is that the region of radius amplifies to obtain attached drawing 12.From attached drawing 13 as it can be seen that dividing
Zonule out is more, only takes the region wherein within the scope of 45 ° to be analyzed, other regions can be obtained a result with analogy.It takes out
45 ° of range areas be divided into 11 pieces of zonules altogether, number respectivelyAnd it is drawn as the form of schematic diagram, such as 13 institute of attached drawing
Show.Analyze the naval vessel that specifically A warship can be cooperateed with to be interfered in every piece of zonule below.
1. number region is not in an any warship cooperateing in area to A warship, so not having when opposing radar at 1. number region
Other warships can cooperate with A warship, can only A warship itself take jamming countermeasure.
2. number region cooperateing in area to A warship in F warship, so F warship can cooperate with A when opposing radar at 2. number region
Warship is interfered.
3. number region cooperateing in area to A warship in D warship, so D warship can cooperate with A when opposing radar at 3. number region
Warship is interfered.
4. number region cooperates in area also the cooperateing in area to A warship in F warship to A warship in D warship, so when enemy's radar exists
4. D, F warship can cooperate with A warship to be interfered when number region.
5. number region cooperates with area, D warship to cooperate with area and F warship to cooperate with area to A warship to A warship on A warship in C warship
It is interior, so C, D, F warship can cooperate with A warship to be interfered when opposing radar at 5. number region.
6. number region cooperates with area, E warship to cooperate with area and F warship to cooperate with area to A warship to A warship on A warship in D warship
It is interior, so D, E, F warship can cooperate with A warship to be interfered when opposing radar at 6. number region.
7. number region is not in an any warship cooperateing in area to A warship, so not having when opposing radar at 7. number region
Other warships can cooperate with A warship, can only A warship itself take jamming countermeasure.
8. number region cooperates with area, D warship to cooperate with area, E warship to cooperate with area and F to A warship to A warship on A warship in C warship
Warship cooperates in area to A warship, so C, D, E, F warship can cooperate with A warship to be interfered when opposing radar at 8. number region.
9. number region cooperates with area, C warship to cooperate with area, D warship to cooperate with area, E to A warship to A warship on A warship in B warship
Warship cooperates with area and F warship cooperateing in area to A warship to A warship, so when opposing radar at 9. number region, B, C, D, E, F warship
A warship can be cooperateed with to be interfered.
10. number region cooperates with area, D warship to cooperate with area and E warship to cooperate with area to A warship to A warship on A warship in C warship
It is interior, so C, D, E warship can cooperate with A warship to be interfered when opposing radar at 10. number region.
Number region cooperates with area, C warship to cooperate with area, D warship to cooperate with area and E to A warship to A warship on A warship in B warship
Warship cooperates in area to A warship, so when enemy's radar existsWhen number region, B, C, D, E warship can cooperate with A warship to be interfered.
Specific conflicting mode in each region, substituting into formula (10) calculating according to the actual situation, you can get it.
Claims (1)
1. a kind of radar co-interfere method based on distributed platform, this method is tracked for a certain platform by radar scanning
When, according to the distribution situation of all platforms, the region of tracked platform interference can be cooperateed with and according to target by marking off other platforms
The determination of radar position can co-interfere platform and the conflicting mode that should take, equipped with jammer on each platform,
It is characterized in that,
When by radar scanning, comprising the following steps:
S1, the jamming power that each platform in distributed platform enters radar receiver input terminal is obtained:
Wherein, PjFor platform interference source transmission power；For interference source antenna gain function；Gt(θ) is radar receiving antenna
Gain function；λ is interference signal wavelength；γjIt is interference signal to the polarization loss of radar antenna；BrFor radar receiver band
It is wide；RjFor the distance of radar to interference source；BjFor jamming signal bandwidth；LjFor the interference source transmission loss factor；Setting interference antenna
Main lobe is directed at radar direction always, i.e.,
S2, the radar return power for obtaining each platform in distributed platform:
Wherein, PtFor radar transmission power；RtFor the distance on naval vessel to radar；LsFor Radar Signal Transmission fissipation factor；σ is flat
The effective sectional area of platform；
S3, the effective interference covering of the fan θ for obtaining each platforms:
According to the radar return power that the step S1 jamming power obtained and step S2 obtain, each platform P is calculatedrj/Ps=KjWhen
Corresponding radar receiving antenna gain Gt(θ):
θ is calculated according to above formula, to obtain effectively interference covering of the fan θsAre as follows:
θs=2 θ
S4, least interference covering of the fan is obtained:
According to effective interference covering of the fan θ of the step S3 each platform obtainedsAnd the actual distribution positional relationship of platform, according to several
Least interference covering of the fan ψ needed for what principle obtains all platforms of covering；
S5, the collaborative platform for determining specific implementation compacting interference:
s.t.F≥ψ
θisFor effective interference covering of the fan of each platform of specific implementation compacting interference, subscript i is that the collaborative platform of selection is numbered.
When by radar tracking, comprising the following steps:
Area and miscoordination area are cooperateed between two S6, acquisition platforms:
If being tracked platform is that G, collaborative platform A, tracking radar B are tracked flat using being tracked platform G as coordinate origin
Straight line where platform G and collaborative platform A is X-axis, establishes rectangular coordinate system, and radar B beam center, which is directed toward, is tracked platform G, and BG is
Radar B beam central line, for collaborative platform A in same radar B wave beam, BA is the boundary line of radar B beam angle,Be BG and
The angle of AB two lines is the half of radar B beam angle.
It can be obtained by sine:
If ∠ BGA=θ,Substituting into above formula can obtain:
Due to the position of A, G platform be it is known, in institute's above formula AG be known quantity, what is obtained is the relational expression of BG and θ；Wherein
BG is the critical distance of radar and tracked platform when A, G warship are just in same radar B wave beam under current θ value, is less than the value
Then A, G platform not in same radar B wave beam and then cannot achieve co-interfere, be greater than the value then A, G in same radar B wave beam
It is interior and then co-interfere may be implemented；
It enables:
The coordinate value of enemy's radar when A, G platform are just in same radar B wave beam under current angular θ can be obtained；
S7, angle, θ π from 0 to 2 is enabled successively value and to substitute into the calculating formula of BG at equal intervals, the point that each angle, θ is obtained connects
It connects to get to the line of demarcation for cooperateing with area and miscoordination area of A, G platform；
S8, find out tracked platform and any platform cooperate with area, and combine；
S9, the region according to locating for enemy radar B, determination specifically can be with the platform of co-interfere；
S10, co-interfere mode is determined, specifically:
The disturbance suppression ratio J/S of S101, radar B receiver inlet are as follows:
Wherein, Pt(W)、Gt(dB) be respectively radar B transmission power and receiving antenna gain function；σ(m2) it is the effective of platform
Sectional area；RjIt (m) is the distance of radar B to interference source；Pj(W)、GjIt (dB) is respectively platform interference source transmission power and interference source
Antenna gain；γjIt is interference signal to the polarization loss of radar B antenna；RtIt (m) is the distance on naval vessel to radar B；
S102, the total disturbance suppression ratio for calculating the receiving end radar B
In formula, i is the platform quantity of co-interfere together, a shared n, there was only R in above formulatFor unknown number, when radar B comes
R after to determinationjiIt can be expressed as RtFunction；
S103, orderIt is counter to solve RtSeparation as compacting interference and cheating interference；
S104, it is greater than R when radar B and tracked platform spacingtThe interference of Shi Caiyong pressing type, is less than RtShi Caiyong Deceiving interference.
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| CN107979436B (en) * | 2017-11-10 | 2020-01-14 | 广州海格通信集团股份有限公司 | Interference signal generation method and device, computer equipment and storage medium |
| CN110333492B (en) * | 2019-06-28 | 2021-07-30 | 中国人民解放军空军工程大学 | An anti-non-cooperative deception jamming method based on area ratio |
| CN111427017B (en) * | 2020-04-22 | 2020-12-11 | 北京航天长征飞行器研究所 | Interference resource allocation method and device |
| CN113567934B (en) * | 2021-08-04 | 2022-04-08 | 成都众享天地网络科技有限公司 | Radar detection method based on cooperation |
| CN113917496B (en) * | 2021-09-17 | 2024-11-19 | 中山大学 | A navigation anti-interference test method and device |
| WO2023074016A1 (en) * | 2021-10-29 | 2023-05-04 | 古野電気株式会社 | Radar image synthesis device, radar image synthesis method and radar image synthesis program |
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