CN110244266A - A kind of reversed Cross-eye interference system and interference method applied to radar system - Google Patents
A kind of reversed Cross-eye interference system and interference method applied to radar system Download PDFInfo
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- CN110244266A CN110244266A CN201910608520.3A CN201910608520A CN110244266A CN 110244266 A CN110244266 A CN 110244266A CN 201910608520 A CN201910608520 A CN 201910608520A CN 110244266 A CN110244266 A CN 110244266A
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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
- G01S7/38—Jamming means, e.g. producing false echoes
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Abstract
The invention discloses a kind of reversed Cross-eye interference systems and interference method applied to radar system, the interference system includes first pair of interference unit and second pair of interference unit, first pair of interference unit and second pair of interference unit are arranged in a crossed manner, intersecting angle range is [- 90 °, 90 °].Embodiment provided by the invention can be stablized compared to traditional interference system constantly carries out angle interference to radar system, and pass through real-time adjustment signal modulation direction, it is able to solve the problems of the prior art, suitable for interfering situations such as platform is because of rotation, shake or by the radar detection of different directions, there is practical application value.
Description
Technical field
The present invention relates to gate stealing fields, dry more particularly to a kind of reversed Cross-eye applied to radar system
Disturb system and interference method.
Background technique
Cross-eye interference is exactly artificially to reconstruct to generate angle interference to radar, emits signal using two antennas, ideal
In the case of, the signal that two phase differences are 180 ° is formed at the front of disturbed radar.
Traditional two point source Cross-eye schemes are as shown in Figure 1, including radar system and interference system, and wherein radar system includes
Antenna element L1 and L2, interference system include a pair of of interference unit, this interferes unit to interference unit for reversed Cross-eye, including
First interference unit 1 and the second interference unit 2, using the line at radar system center and interference system center as horizontal base line.By
It needs to be arranged in traditional two point source Cross-eye schemes and interfere in the hypothesis that platform rotation angle is definite value, in this restrictive condition
Under, traditional Cross-eye scheme can only operate in certain angular range, it cannot be guaranteed that in arbitrarily interference platform rotation angle
In the case where keep effectively stable angle deception.
Summary of the invention
At least one to solve the above-mentioned problems, first aspect present invention provides a kind of reversed friendship applied to radar system
Pitch eye interference system, including first pair of interference unit and second pair of interference unit, first pair of interference unit and described second
Arranged in a crossed manner to interference unit, intersecting angle range is [- 90 °, 90 °].
Further, first pair of interference unit includes the first interference unit, the second interference unit and the first interference electricity
Road, the first end of the first interference circuit is connect with the first interference unit, second end and the second interference unit connect
It connects, the Working mould of the first interference unit and the second interference unit is arranged in response to external signal for the first interference circuit
Formula；
Second pair of interference unit includes third interference unit, the 4th interference unit and the second interference circuit, and described the
First end and the third interference unit of two interference circuits connect, second end with the described 4th interferes unit to connect, and described the
The operating mode of the third interference unit and the 4th interference unit is arranged in response to the external signal for two interference circuits.
Further,
The first interference circuit includes the first interference sub-circuit and the second interference sub-circuit, wherein
The first interference sub-circuit includes first switch, the first amplitude gain unit and first phase offset units, institute
Stating the second interference sub-circuit includes second switch, the second amplitude gain unit and second phase offset units, first interference
Circuit controls the first switch and the second switch in response to external signal:
The first switch closure, second switch are opened, and the first interference unit received signal is through first width
It spends after gain unit and the modulation of first phase offset units by the second interference unit transmitting, the second interference unit receives
Signal directly by it is described first interference unit transmitting；
The second switch closure, first switch are opened, and the second interference unit received signal is through second width
It spends after gain unit and the modulation of second phase offset units by the first interference unit transmitting, the first interference unit receives
Signal directly by it is described second interference unit transmitting；The second interference circuit includes third interference sub-circuit and the 4th interference
Sub-circuit, wherein
The third interference sub-circuit includes third switch, third amplitude gain unit and third phase offset units, institute
Stating the 4th interference sub-circuit includes the 4th switch, the 4th amplitude gain unit and the 4th phase offset unit, second interference
Circuit controls the third switch and the 4th switch in response to external signal:
The third closes the switch, the 4th switch is opened, and the third interference unit received signal is through the third width
It spends after gain unit and the modulation of third phase offset units by the 4th interference unit transmitting, the 4th interference unit receives
Signal directly by the third interference unit transmitting；
Described 4th closes the switch, third switch is opened, and the 4th interference unit received signal is through the 4th width
It spends after gain unit and the 4th phase offset cells modulate by third interference unit transmitting, the third interference unit receives
Signal directly by it is described 4th interference unit transmitting.
Further, the first interference unit and the second interference unit are relative to the intersection point symmetry arranged in a crossed manner
Setting；
The third interference unit and the 4th interference unit are symmetrical arranged relative to the crosspoint arranged in a crossed manner.
Further, the third interferes unit to interfere unit to the friendship to the distance in the crosspoint and described first
Crunode is equidistant.
Further, the intersecting angle of first pair of interference unit and second pair of interference unit is 90 °.
Second aspect of the present invention provides a kind of interference method of interference system described in first aspect, comprising:
First pair of interference unit and second pair of interference unit it is arranged in a crossed manner for radar system provide angle interference, the intersection
Angular range is [- 90 °, 90 °].
Further, first pair of interference unit includes the first interference unit, the second interference unit and the first interference electricity
Road, the first end of the first interference circuit is connect with the first interference unit, second end and the second interference unit connect
It connects；
Second pair of interference unit includes third interference unit, the 4th interference unit and the second interference circuit, and described the
The first end of two interference circuits is connect with third interference unit, second end is connect with the 4th interference unit；
First pair of interference unit and second pair of interference unit is arranged in a crossed manner provides angle for radar system and interfere into one
Step includes:
The work of the first interference unit and the second interference unit is arranged in response to external signal for the first interference circuit
Operation mode provides angle interference for radar system；
The third interference unit and the 4th interference unit is arranged in response to the external signal in the second interference circuit
Operating mode, for radar system provide angle interference.
Further, the first interference circuit includes the first interference sub-circuit and the second interference sub-circuit, wherein described
First interference sub-circuit includes first switch, the first amplitude gain unit and first phase offset units, the second interference
Circuit includes second switch, the second amplitude gain unit and second phase offset units, and the first interference circuit is in response to outer
The operating mode of the first interference unit and the second interference unit is arranged in portion's signal, provides angle for radar system and interferes into one
Step includes:
The first interference circuit controls the first switch and the second switch in response to external signal:
It is closed the first switch, opens second switch, the first interference unit received signal is through first width
It spends after gain unit and the modulation of first phase offset units by the second interference unit transmitting, the second interference unit receives
Signal directly by it is described first interference unit transmitting；
It is closed the second switch, opens first switch, the second interference unit received signal is through second width
It spends after gain unit and the modulation of second phase offset units by the first interference unit transmitting, the first interference unit receives
Signal directly by it is described second interference unit transmitting；
The second interference circuit includes third interference sub-circuit and the 4th interference sub-circuit, wherein third interference
Circuit includes third switch, third amplitude gain unit and third phase offset units, and the 4th interference sub-circuit includes the
Four switches, the 4th amplitude gain unit and the 4th phase offset unit, the second interference circuit is in response to the external signal
The operating mode of the third interference unit and the 4th interference unit is set, provides angle interference further packet for radar system
It includes:
The second interference circuit controls the third switch and the 4th switch in response to external signal:
It is closed the third switch, opens the 4th switch, the third interference unit received signal is through the third width
It spends after gain unit and the modulation of third phase offset units by the 4th interference unit transmitting, the 4th interference unit receives
Signal directly by the third interference unit transmitting；
It is closed the 4th switch, opens third switch, the 4th interference unit received signal is through the 4th width
It spends after gain unit and the 4th phase offset cells modulate by third interference unit transmitting, the third interference unit receives
Signal directly by it is described 4th interference unit transmitting.
Further, the first interference unit and the second interference unit are relative to the intersection point symmetry arranged in a crossed manner
Setting, third interference unit and the 4th interference unit are symmetrical arranged relative to the crosspoint arranged in a crossed manner, and described the
Distance and first interference unit being equidistant to the crosspoint of the three interference units to the crosspoint；
The interference method further include: the intersecting angle of first pair of interference unit and second pair of interference unit is 90 °.
Beneficial effects of the present invention are as follows:
The present invention for existing problem at present, formulate a kind of reversed Cross-eye interference system applied to radar system and
Interference method can be stablized constantly by first pair of interference unit arranged in a crossed manner and second pair of interference unit to radar system
Carry out angle interference, and by orthogonal single loop rotate reversed Cross-eye can real-time adjustment signal modulation direction, can solve
Certainly the problems of the prior art have suitable for interfering situations such as platform is because of rotation, shake or by the radar detection of different directions
Practical application value.
Detailed description of the invention
Specific embodiments of the present invention will be described in further detail with reference to the accompanying drawing.
Fig. 1 shows the schematic diagram of traditional interference system in the prior art；
Fig. 2 shows the structural block diagrams of the interference system of non-return Cross-eye in the prior art；
Fig. 3 shows the schematic diagram of interference system described in one embodiment of the present of invention；
Fig. 4 shows the structural block diagram that circuit is interfered described in one embodiment of the present of invention；
Fig. 5 shows the schematic diagram of interference system described in another embodiment of the invention.
Specific embodiment
In order to illustrate more clearly of the present invention, the present invention is done further below with reference to preferred embodiments and drawings
It is bright.Similar component is indicated in attached drawing with identical appended drawing reference.It will be appreciated by those skilled in the art that institute is specific below
The content of description is illustrative and be not restrictive, and should not be limited the scope of the invention with this.
The interference system for generalling use non-return Cross-eye in the prior art carries out angle interference, such as Fig. 2 to radar system
Shown, the interference system of the non-return Cross-eye includes a receiving antenna and two emitting antennas, and receiving antenna, which receives, to be come
Wave signal is handled and is analyzed to incoming wave signal, be forwarded by the signal repeater of connection, by two after power splitter
Transmitting antenna transmitting.This structure can analyze the signal of the radar system of tracking, obtain the radar system of tracking
Operating mode and location information etc., and by being adjusted to interference signal, form more effectively interference.Simultaneously as transmitting
Signal from the radar system of tracking, then can make the radar system of tracking that can not identify the interference, to prevent described
Radar system activates interference protection measure.
But non-return Cross-eye interference system is due to external environmental factor, such as temperature, humidity, air pressure and platform shake
Deng, influence whether up to radar system front signal relative phase relation.Sometimes ideal Cross-eye interference setting, is arrived
BEACONING EFFECT is then formd when up to radar front.Simultaneously as the direction that signal modulation is carried out between dual-mode antenna is fixed-direction,
Modulation direction can not flexibly be changed, the symbol of the angular error of generation is fixed.
Intersect to solve the above problems, present inventor proposes that single loop rotation is reversed with many experiments after study
Eye interference system, as shown in figure 3, An embodiment provides a kind of reversed Cross-eyes applied to radar system to do
Disturb system, including first pair of interference unit and second pair of interference unit, first pair of interference unit and second pair of interference
Unit is arranged in a crossed manner, and intersecting angle range is [- 90 °, 90 °].
In a specific example, handed over as shown in figure 3, the reversed Cross-eye interference system is that single loop rotation is reversed
Pitch eye interference system, including two pairs of interference units, respectively first pair interference unit and second pair of interference unit, the radar system
System includes antenna element L1 and L2, using the line at radar system center and interference system center as horizontal base line, first pair of interference
The angle of unit and second pair of interference unit is θ, and the value range of θ is [- 90 °, 90 °].It is dry that single loop rotates reversed Cross-eye
It disturbs system and angle interference is carried out by radar system of two pairs of interference unit subangles to tracking, be able to solve non-in the prior art
Reversed Cross-eye interference system there are the problem of, in the case where the angular error for ensuring to generate is certain, it is single flexibly to change interference
The modulation direction of member.
In an alternative embodiment, as shown in figure 3, first pair of interference unit includes the first interference unit, the
Two interference units and first interference circuit, it is described first interference circuit first end with it is described first interfere unit connect, second
End with it is described second interference unit connect, it is described first interference circuit in response to external signal setting it is described first interfere unit with
The operating mode of second interference unit；Second pair of interference unit includes third interference unit, the 4th interference unit and second
Circuit is interfered, the first end of the second interference circuit is connect with third interference unit, second end and the described 4th is interfered
The third interference unit and the 4th interference unit is arranged in response to the external signal in unit connection, the second interference circuit
Operating mode.
Specifically, the first interference circuit is single in response to the external signal setting first interference unit and the second interference
The third interference unit and the 4th interference is arranged in response to the external signal in the operating mode of member, the second interference circuit
The operating mode of unit, i.e., according to the modulation direction for respectively interfering unit in the direction of tracked radar system setting interference system
And operating mode, and provide continual and steady angle to radar system according to the operating mode of each interference unit and interfere.
Identical interference circuit is used in first pair of interference unit and second pair of interference unit in the present embodiment, is such as schemed
4 show the schematic diagram of internal structure of interference circuit, are illustrated by taking first pair of interference unit as an example, the first interference circuit
Including the first interference sub-circuit and the second interference sub-circuit, wherein the first interference sub-circuit includes first switch K1, first
Amplitude gain unit A1 and first phase offset units P1, the second interference sub-circuit includes second switch K2, the second amplitude
Gain unit A2 and second phase offset units P2, the first interference circuit control the first switch in response to external signal
The K1 and second switch K2.
It is described when external signal shows that the direction of tracked radar system is within the scope of the 0-180 degree of horizontal base line
The modulation direction of first pair of interference unit is set as interfering unit 2 from the first interference unit 1 to the second, as shown in figure 3, from radar
The normal direction of antenna element L1 and the L2 line of system sees that the first interference unit 1 and the second interference unit 2 arrive radar system
The angle of central point is θr±θe1, wherein the horizontal base line is the center of radar system and the line at interference system center.
Specifically, the modulation direction of first pair of interference unit is set as single from the first interference interference of unit 1 to the second
Member 2, that is, be closed the first switch K1 and open second switch K2, and the first interference 1 received signal of unit is through first width
Emitted after degree gain unit A1 and first phase offset units P1 modulation by the second interference unit 2, second interference is single
First 2 received signals are directly emitted by the first interference unit 1.
When external signal shows that the direction of tracked radar system is within the scope of the 180-360 degree of horizontal base line, institute
The modulation direction for stating first pair of interference unit is set as interfering unit 1 from the second interference unit 2 to the first.
Specifically, the modulation direction of first pair of interference unit is set as single from the second interference interference of unit 2 to the first
Member 1, that is, be closed the second switch K2 and open first switch K1, and the second interference 2 received signal of unit is through second width
Emitted after degree gain unit A2 and second phase offset units P2 modulation by the first interference unit 1, first interference is single
First 1 received signal is directly emitted by the second interference unit 2.
It is similar with the described first pair interference operating mode of unit:
It is described when external signal shows that the direction of tracked radar system is within the scope of the 0-180 degree of horizontal base line
The modulation direction of second pair of interference unit is set as interfering unit to the 4th interference unit from third.As shown in figure 3, from radar system
The normal direction of antenna element L1 and the L2 line of system sees that third interferes unit and the 4th interference unit to the center of radar system
The angle of point is θr±θe2.It is embodied in, is closed the third and switchs and open the 4th switch, the third interference unit connects
The signal of receipts is emitted after the third amplitude gain unit and the modulation of third phase offset units by the 4th interference unit,
The 4th interference unit received signal is directly by third interference unit transmitting.
When external signal shows that the direction of tracked radar system is within the scope of the 180-360 degree of horizontal base line, institute
The modulation direction for stating second pair of interference unit is set as interfering unit from the 4th interference unit to third.It is embodied in, is closed
Described 4th switchs and simultaneously opens third switch, the 4th interference unit received signal through the 4th amplitude gain unit and
By third interference unit transmitting after 4th phase offset cells modulate, third interference unit received signal directly by
The 4th interference unit transmitting.
In the present embodiment, the modulation methods of each interference unit are arranged according to the direction of tracked radar system for interference system
To and operating mode, every a pair of of the interference unit of synchronization only one phase offset unit and amplitude gain cell operation,
I.e. only one phase and amplitude modulates loop work, interferes to realize and provide continual and steady angle to radar system.
In another alternative embodiment, the first interference unit and the second interference unit are set relative to the intersection
The crosspoint set is symmetrical arranged；The third interference unit and the 4th interference unit are relative to the crosspoint pair arranged in a crossed manner
Claim setting.First interference unit shown in i.e. and the second interference unit are symmetrical arranged and third interferes unit and the 4th interference unit
It is symmetrical arranged, effectively improves the stability of interference system.
On this basis, in an alternative embodiment, third interference unit to the crosspoint distance and
The spacing of first interference unit being equidistant to the crosspoint, i.e., each interference unit is identical.
Further, the intersecting angle of first pair of interference unit and second pair of interference unit is 90 °, i.e., first pair dry
It disturbs unit and second pair of interference unit is orthogonally located, form orthogonal single loop and rotate reversed Cross-eye jamming program.
It, can according to stability factor in the case where using canonical parameter and when the value range of platform rotation angle is 0~2 π
It is respectively 1 and 0.1268, i.e. this implementation to calculate the stability factor of traditional two point source Cross-eye jamming programs and the present embodiment
The stability factor of example is far smaller than traditional scheme, and in other words, it is dry that the present embodiment generates continual and steady angle to radar system
The ability disturbed is better than traditional scheme, while by using above-mentioned interference circuit, can be real according to the direction of tracked radar system
When adjust it is each interference unit signal modulation direction, and make angle interfere angular deviation curve more than zero curve, do not deposit
In zero point, so that Monopulse estimation system in traditional scheme effectively be avoided to lock the feelings no longer changed in a fixed angle
Condition.
In a specific example, it is illustrated in figure 5 orthogonal single loop and rotates reversed Cross-eye interference system, radar system
System includes antenna element L1 and L2, and the distance of the antenna element L1 and L2 is dr, interference system includes first pair of interference unit
With second pair of interference unit, the angle of first pair of interference unit and second pair of interference unit is 90 °, and first pair of interference unit includes
First interference unit 1 and the second interference unit 2, second pair of interference unit include that third interference unit 3 and the 4th interfere unit 4,
First interference unit 1 and second interferes the distance of unit 2, is at a distance from third interference unit 3 and the 4th interference unit 4
dc, radar system center is r at a distance from interference system center.
In order to guarantee that interference unit of the transmitting by the modulated signal of phase offset unit and amplitude gain unit is in water
The modulation direction of first interference unit 1 and the second interference unit 2 is set as from first in the present embodiment by the same side of flat baseline
Interference unit 1 to the second interferes unit 2 to remain unchanged, while will interfere platform rotation angle θcValue range be [0, pi/2] when,
The modulation direction of third interference unit 3 and the 4th interference unit 4 is set as interfering unit 3 to the 4th interference unit 4, θ from thirdc
Value range be [- pi/2,0] when third interfere unit 3 and the 4th interference unit 4 modulation direction be set as from the 4th interference
Unit 4 interferes unit 3 to third.
The work of each interference unit of switch setting of sub-circuit is respectively interfered further according to each interference circuit control to interference unit
Operation mode, it is ensured that in synchronization, every a pair of of interference unit only one phase and amplitude modulates loop work, wherein described
Switch control modulation direction is by θcValue range determine, work as θcWhen for [0, pi/2] modulation direction be set as from interference unit 3 to
4；Work as θcWhen for [- pi/2,0], modulation direction is set as from interference unit 4 to 3.
Embodiment provided by the present application is by using can adjust modulation direction and can be realized the transmit-receive sharing same antenna
Interference unit to internal structure, as the dynamic of modulation direction adjusts, the angle error for enabling to reversed Cross-eye to generate
Symbol generates variation, the direction that false angle information deviates real goal and radar line can be controlled, in Fast transforms tune
The effect of multiple angle informations can be generated when direction processed, so that angle deception interference is more difficult to be identified by radar system.
Meanwhile the present embodiment can effectively promote the steady of angle interference by each intersection modes of emplacement to interference unit
Fixed degree, especially orthogonally located each mode to interference unit, so that interference platform can adapt to interference platform and may rotate, tremble
It moves or by a variety of situations such as the radar detection of different directions, generates stable angle deception interference.
Corresponding with reversed Cross-eye interference system provided by the above embodiment, one embodiment of the application also provides one
Kind using above-mentioned reversed Cross-eye interference system interference method, due to interference method provided by the embodiments of the present application with it is above-mentioned several
The reversed Cross-eye interference system that kind of embodiment provides is corresponding, thus aforementioned embodiments be also applied for the present embodiment provides
Interference method, be not described in detail in the present embodiment.
One embodiment of the application also provides a kind of interference method using above-mentioned reversed Cross-eye interference system, packet
Include: first pair of interference unit and second pair of interference unit it is arranged in a crossed manner for radar system provide angle interference, the intersecting angle
Range is [- 90 °, 90 °].
In an alternative embodiment, first pair of interference unit includes the first interference unit, the second interference unit
With the first interference circuit, the first end of the first interference circuit connect with the first interference unit, second end and described the
Two interference unit connections；Second pair of interference unit includes that third interferes unit, the 4th interference unit and the second interference circuit,
The first end of the second interference circuit is connect with third interference unit, second end is connect with the 4th interference unit；
First pair of interference unit and second pair of interference unit it is arranged in a crossed manner for radar system provide angle interference further comprise: institute
The operating mode that the first interference unit and the second interference unit are arranged in response to external signal for the first interference circuit is stated, is thunder
Angle interference is provided up to system；Third interference unit and the is arranged in response to the external signal in the second interference circuit
The operating mode of four interference units provides angle interference for radar system.
In an alternative embodiment, the first interference circuit includes the first interference sub-circuit and the second interference son electricity
Road, wherein the first interference sub-circuit includes first switch, the first amplitude gain unit and first phase offset units, it is described
Second interference sub-circuit includes second switch, the second amplitude gain unit and second phase offset units, the first interference electricity
The operating mode of the first interference unit and the second interference unit is arranged in response to external signal for road, provides angle for radar system
Degree interference further comprises: the first interference circuit controls the first switch and the second switch in response to external signal: closing
It closes the first switch, open second switch, the first interference unit received signal is through the first amplitude gain unit
Emitted with after the modulation of first phase offset units by the second interference unit, the second interference unit received signal is direct
By the first interference unit transmitting；It is closed the second switch, opens first switch, the second interference received letter of unit
By the first interference unit transmitting number after the second amplitude gain unit and the modulation of second phase offset units, described the
One interference unit received signal is directly by the second interference unit transmitting；The second interference circuit includes third interference
Circuit and the 4th interference sub-circuit, wherein third interference sub-circuit includes third switch, third amplitude gain unit and the
Three phase offset units, the 4th interference sub-circuit include the 4th switch, the 4th amplitude gain unit and the 4th phase offset
The work of the third interference unit and the 4th interference unit is arranged in response to the external signal for unit, the second interference circuit
Operation mode, providing angle interference for radar system further comprises: the second interference circuit controls institute in response to external signal
It states third switch and the 4th switch: being closed the third switch, opens the 4th switch, the third interferes unit received signal
Emitted after the third amplitude gain unit and the modulation of third phase offset units by the 4th interference unit, the described 4th
Interfere unit received signal directly by third interference unit transmitting；It is closed the 4th switch, opens third switch, institute
The 4th interference unit received signal is stated after the 4th amplitude gain unit and the 4th phase offset cells modulate by described
Third interferes unit transmitting, and the third interference unit received signal is directly by the 4th interference unit transmitting.
In another alternative embodiment, the first interference unit and the second interference unit are set relative to the intersection
The crosspoint set is symmetrical arranged, and the third interference unit and the 4th interference unit are relative to the crosspoint pair arranged in a crossed manner
Claim setting, the distance and described first that the third interferes unit to the crosspoint is interfered at a distance from unit to the crosspoint
It is equal；The interference method further include: the intersecting angle of first pair of interference unit and second pair of interference unit is 90 °.
The present invention for existing problem at present, formulate a kind of reversed Cross-eye interference system applied to radar system and
Interference method can be stablized constantly by first pair of interference unit arranged in a crossed manner and second pair of interference unit to radar system
Carry out angle interference, and by orthogonal single loop rotate reversed Cross-eye can real-time adjustment signal modulation direction, can solve
Certainly the problems of the prior art have suitable for interfering situations such as platform is because of rotation, shake or by the radar detection of different directions
Practical application value.
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention may be used also on the basis of the above description for those of ordinary skill in the art
To make other variations or changes in different ways, all embodiments can not be exhaustive here, it is all to belong to this hair
The obvious changes or variations that bright technical solution is extended out are still in the scope of protection of the present invention.
Claims (10)
1. a kind of reversed Cross-eye interference system applied to radar system, which is characterized in that including first pair of interference unit and
Second pair of interference unit, first pair of interference unit and second pair of interference unit are arranged in a crossed manner, and intersecting angle range is
[- 90 °, 90 °].
2. interference system according to claim 1, which is characterized in that
First pair of interference unit includes the first interference unit, the second interference unit and the first interference circuit, and described first is dry
Disturb circuit first end and it is described first interference unit connect, second end with it is described second interfere unit connect, described first is dry
Disturb the operating mode that the first interference unit and the second interference unit are arranged in response to external signal for circuit；
Second pair of interference unit includes third interference unit, the 4th interference unit and the second interference circuit, and described second is dry
It disturbs the first end of circuit and the third interferes unit to connect, second end is connect with the 4th interference unit, described second is dry
Disturb the operating mode that the third interference unit and the 4th interference unit are arranged in response to the external signal for circuit.
3. interference system according to claim 2, which is characterized in that
The first interference circuit includes the first interference sub-circuit and the second interference sub-circuit, wherein
The first interference sub-circuit includes first switch, the first amplitude gain unit and first phase offset units, and described the
Two interference sub-circuits include second switch, the second amplitude gain unit and second phase offset units, the first interference circuit
The first switch and the second switch are controlled in response to external signal:
The first switch closure, second switch are opened, and the first interference unit received signal increases through first amplitude
By the second interference unit transmitting, the second interference received letter of unit after beneficial unit and the modulation of first phase offset units
Number directly by the first interference unit transmitting；
The second switch closure, first switch are opened, and the second interference unit received signal increases through second amplitude
By the first interference unit transmitting, the first interference received letter of unit after beneficial unit and the modulation of second phase offset units
Number directly by the second interference unit transmitting；
It is described second interference circuit include third interference sub-circuit and the 4th interference sub-circuit, wherein
Third interference sub-circuit includes third switch, third amplitude gain unit and third phase offset units, and described the
Four interference sub-circuits include the 4th switch, the 4th amplitude gain unit and the 4th phase offset unit, the second interference circuit
The third switch and the 4th switch are controlled in response to external signal:
The third closes the switch, the 4th switch is opened, and the third interference unit received signal increases through the third amplitude
By the 4th interference unit transmitting, the 4th interference received letter of unit after beneficial unit and the modulation of third phase offset units
Number directly by third interference unit transmitting；
Described 4th closes the switch, third switch is opened, and the 4th interference unit received signal increases through the 4th amplitude
By third interference unit transmitting after beneficial unit and the 4th phase offset cells modulate, the third interferes the received letter of unit
Number directly by the 4th interference unit transmitting.
4. interference system according to claim 2 or 3, which is characterized in that
The first interference unit and the second interference unit are symmetrical arranged relative to the crosspoint arranged in a crossed manner；
The third interference unit and the 4th interference unit are symmetrical arranged relative to the crosspoint arranged in a crossed manner.
5. interference system according to claim 4, which is characterized in that the third interfere unit to the crosspoint away from
Unit being equidistant to the crosspoint is interfered from described first.
6. interference system according to claim 5, which is characterized in that first pair of interference unit and second pair of interference are single
The intersecting angle of member is 90 °.
7. a kind of interference method using interference system described in claim 1 characterized by comprising
First pair of interference unit and second pair of interference unit it is arranged in a crossed manner for radar system provide angle interference, the intersecting angle
Range is [- 90 °, 90 °].
8. interference method according to claim 7, which is characterized in that
First pair of interference unit includes the first interference unit, the second interference unit and the first interference circuit, and described first is dry
Disturb circuit first end and it is described first interference unit connect, second end with it is described second interfere unit connect；
Second pair of interference unit includes third interference unit, the 4th interference unit and the second interference circuit, and described second is dry
It disturbs the first end of circuit and the third interferes unit to connect, second end is connect with the 4th interference unit；
First pair of interference unit and second pair of interference unit it is arranged in a crossed manner for radar system provide angle interference further packet
It includes:
The Working mould of the first interference unit and the second interference unit is arranged in response to external signal for the first interference circuit
Formula provides angle interference for radar system；
The work of the third interference unit and the 4th interference unit is arranged in response to the external signal for the second interference circuit
Operation mode provides angle interference for radar system.
9. interference method according to claim 8, which is characterized in that
The first interference circuit includes the first interference sub-circuit and the second interference sub-circuit, wherein the first interference sub-circuit
Including first switch, the first amplitude gain unit and first phase offset units, the second interference sub-circuit is opened including second
Pass, the second amplitude gain unit and second phase offset units, the first interference circuit is in response to described in external signal setting
The operating mode of first interference unit and the second interference unit, providing angle interference for radar system further comprises:
The first interference circuit controls the first switch and the second switch in response to external signal:
It is closed the first switch, opens second switch, the first interference unit received signal increases through first amplitude
By the second interference unit transmitting, the second interference received letter of unit after beneficial unit and the modulation of first phase offset units
Number directly by the first interference unit transmitting；
It is closed the second switch, opens first switch, the second interference unit received signal increases through second amplitude
By the first interference unit transmitting, the first interference received letter of unit after beneficial unit and the modulation of second phase offset units
Number directly by the second interference unit transmitting；
The second interference circuit includes third interference sub-circuit and the 4th interference sub-circuit, wherein the third interferes sub-circuit
Including third switch, third amplitude gain unit and third phase offset units, the 4th interference sub-circuit is opened including the 4th
It closes, the 4th amplitude gain unit and the 4th phase offset unit, the second interference circuit are arranged in response to the external signal
The operating mode of the third interference unit and the 4th interference unit, providing angle interference for radar system further comprises:
The second interference circuit controls the third switch and the 4th switch in response to external signal:
It is closed the third switch, opens the 4th switch, the third interference unit received signal increases through the third amplitude
By the 4th interference unit transmitting, the 4th interference received letter of unit after beneficial unit and the modulation of third phase offset units
Number directly by third interference unit transmitting；
It is closed the 4th switch, opens third switch, the 4th interference unit received signal increases through the 4th amplitude
By third interference unit transmitting after beneficial unit and the 4th phase offset cells modulate, the third interferes the received letter of unit
Number directly by the 4th interference unit transmitting.
10. interference method according to claim 9, which is characterized in that
The first interference unit and the second interference unit are symmetrical arranged relative to the crosspoint arranged in a crossed manner, the third
Unit and the 4th interference unit is interfered to be symmetrical arranged relative to the crosspoint arranged in a crossed manner, the third interferes unit to institute
The distance and described first for stating crosspoint interfere unit being equidistant to the crosspoint；
The interference method further include: the intersecting angle of first pair of interference unit and second pair of interference unit is 90 °.
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| CN201910608520.3A CN110244266A (en) | 2019-07-08 | 2019-07-08 | A kind of reversed Cross-eye interference system and interference method applied to radar system |
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