KR102290426B1 - Method for generating range gate pull off/In with asymmetric acceleration corresponding to the pulse signal - Google Patents

Abstract

The present invention provides a method for generating bidirectional range gate pull-off with asymmetric acceleration corresponding to a pulse signal. The method comprises the steps of: capturing, by a jammer's pull-off signal, a radar pulse signal; performing, by the jammer, bidirectional range gate pull-off with different acceleration; performing, by the jammer, different bidirectional range gate pull-off to maintain the maximum distance; and repeating, by the jammer the bidirectional range gate pull-off with different acceleration. To this end, the jammer can generate a signal of bidirectional range gate pull-off with asymmetric acceleration in corresponding to a radar that tracks a target using a pulse signal.

Description

{Method for generating range gate pull off/In with asymmetric acceleration corresponding to the pulse signal}

The present invention relates to a method for generating only a two-way distance with asymmetric acceleration corresponding to a pulse signal. More particularly, it relates to a method of generating a signal only from a bidirectional ranger having an asymmetrical acceleration by a jammer in response to a radar that tracks a target using a pulse signal.

A radar using a pulse signal transmits a pulse signal and then tracks the target with an echo signal, which is a target reflection that has been reflected on the target. The echo signal is received and signal-processed to track the target when an echo signal greater than the noise generated by the radar is received. In order to avoid being caught by the radar, the jammer performs jamming, which is a radio disturbance, so that it cannot be tracked by the radar. This is called Electronic Attack EA.

EA uses noise jamming, a device that stores radar signals, DRFM (Digital Radio Frequency Memory) to modulate and retransmit the phase and size of the stored signal, and composite jamming that uses both noise and deceptive jamming at the same time. It can be broadly classified by the jamming technique of

Range deception, which is a deception technique using DRFM, is a method of storing, reproducing, and transmitting the radar's received signal. Classified as /RGPI.

Radar uses the distance gate to track the target distance with the difference between the forward gate and the reverse gate for the received pulse signal. In addition, the radar avoids only the range of the jammer by using the anti-electronic warfare function as a leading-edge tracker and a trailer tracker in response to distance deception of electronic warfare. In this case, the jammer responds to the anti-electronic warfare function of the radar by responding to the RGPI in response to the front-end tracker and RGPO/RGPI, which simultaneously generates RGPO to the rear-end tracker.

When the jammer performs RGPO/RGPI, which is only range, if the radar gate departure speed or acceleration is the same, the difference between the output value of the radar range gate and the forward gate output value becomes zero, and the effect of only the range may not occur. There are disadvantages that exist.

Accordingly, the present invention is intended to solve the problems of the prior art as described above, and relates to a method for generating a signal only for a bidirectional ranger having an asymmetrical acceleration by a jammer in response to a radar that tracks a target using a pulse signal. will be.

In order to solve the above problems, there is provided a method for generating only a two-way distancer having an asymmetric acceleration corresponding to a pulse signal according to the present invention. The two-way distance deception generating method includes the steps of: capturing a radar pulse signal by a jammer deceptive signal; and performing, by the jammer, only two-way distances with different accelerations: maintaining the maximum distance by the jammers performing only two-way distances with different accelerations; and repeating, by the jammer, only two-way distances with different accelerations, the pulse signal In response to a radar that tracks a target using

In one embodiment, the bidirectional distance deception may be characterized in that the RGPO (Range Gate Pull Off) that deceives the distance of the target close and the RGPI (Range Gate Pull In) that deceives the distance of the target are generated at the same time.

In one embodiment, in the step of performing only the two-way distance having different accelerations, the two accelerations may be characterized in that the acceleration of the RGPO and the acceleration of the RGPI are different.

In one embodiment, in the step of performing only the two-way distance with different accelerations, the RGPI and the RGPO deceptive signals are obtained from the distance gate of the radar by varying the acceleration of only the distance performing the RGPO and the distance only performing the RGPI. At the same time, it can be controlled not to leave the street gate.

In one embodiment, in the step of performing only the two-way distance with different accelerations, only the distance for one of the two signals may be tracked by differentiating the integral value of the front-end gate and the integral value of the rear-end gate of the distance gate.

In an embodiment, in the step of maintaining the maximum distance, the range deception signal generated by varying the acceleration may be maintained to generate the maximum range deception signal before one cycle ends to perform only the range deception of the radar.

In one embodiment, in the step of the jammer repeating only the two-way distance with different accelerations, it may be characterized in that the distance only is repeated while the capture time, the distance deception section, and the maximum distance deception holding time are repeated.

There is provided an apparatus for generating only a bidirectional ranger having an asymmetric acceleration corresponding to a pulse signal according to another aspect of the present invention. The bi-directional range deception device includes: a jammer configured to transmit a deception signal or capture a radar signal; and a control unit configured to control the jammer that transmits the deceptive signal. The control unit controls the spoof signal to capture the radar pulse signal through the jammer, controls the jammer to perform only a two-way distance with a different acceleration, and controls the jammer to maintain a maximum distance by performing only another two-way distance, and , the jammer may be controlled to repeat only two-way distances having different accelerations.

In an embodiment, the controller may simultaneously generate an RGPO that deceives a target distance closer and an RGPI that deceives a target farther to perform only the two-way distance.

In an embodiment, the controller may control the acceleration of the RGPO to be different from the acceleration of the RGPI.

The method and apparatus for generating only a two-way distancer having asymmetric acceleration corresponding to a pulse signal according to the present invention have the following effects.

According to the present invention, in response to a radar tracking a target using a pulse signal, the jammer can generate a signal only for a bidirectional ranger having an asymmetrical acceleration.

The features and effects of the present invention described above will become more apparent through the following detailed description in relation to the accompanying drawings, and accordingly, those of ordinary skill in the art to which the present invention pertains can easily implement the technical idea of the present invention. will be able

1 is a diagram for explaining a distance error of a pulse signal received by a distance gate of a radar according to the present invention.
FIG. 2 is a diagram for explaining a distance error of a distance gate of a radar when a bidirectional distance deception signal transmitted by a jammer according to the present invention is received by a distance gate of the radar.
3 is a flowchart illustrating a method for generating only a two-way distancer having an asymmetric acceleration corresponding to a pulse signal according to an embodiment of the present invention.
FIG. 4 is a diagram for explaining a distance error of a distance gate of a radar when a range deception signal transmitted by a jammer according to the present invention is received by a distance gate of the radar.
5 is a diagram illustrating that the jammer generates a bidirectional distance deception signal having an asymmetric acceleration corresponding to a pulse signal according to an embodiment of the present invention.
6 shows a detailed configuration of a device for generating only a two-way distance distance according to the present invention.

The features and effects of the present invention described above will become more apparent through the following detailed description in relation to the accompanying drawings, and accordingly, those of ordinary skill in the art to which the present invention pertains can easily implement the technical idea of the present invention. will be able Since the present invention can have various changes and can have various forms, specific embodiments are illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to a specific disclosed form, it should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention. The terms used herein are used only to describe specific embodiments, and are not intended to limit the present invention.

Since the present invention can have various changes and can have various embodiments, specific embodiments are illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the present invention to specific embodiments, and it should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention.

In describing each figure, like reference numerals are used for like elements.

Terms such as first, second, etc. may be used to describe various elements, but the elements should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another.

For example, without departing from the scope of the present invention, a first component may be referred to as a second component, and similarly, a second component may also be referred to as a first component. The term “and/or” includes a combination of a plurality of related listed items or any of a plurality of related listed items.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. shouldn't

The suffixes “module,” “block,” and “part” for the components used in the following description are given or mixed in consideration of the ease of writing the specification only, and do not have a meaning or role distinct from each other by themselves. .

Hereinafter, a preferred embodiment of the present invention will be described with reference to the accompanying drawings so that a person skilled in the art can easily implement it. In the following description of embodiments of the present invention, if it is determined that a detailed description of a related known function or a known configuration may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted.

Hereinafter, a method and apparatus for generating only a two-way distancer having asymmetric acceleration corresponding to a pulse signal according to the present invention will be described.

Hereinafter, with reference to the accompanying drawings, embodiments of the present invention will be described in detail so that those of ordinary skill in the art to which the present invention pertains can easily implement them.

In general, radar tracks the distance of the target by using a distance gate for the echo signal, which is the reflected signal of the target. 1 is a diagram to explain the distance error of the pulse signal received by the distance gate of the radar according to the present invention. The error output through the distance gate is given as in Equation 1.

는 수신된 펄스 신호이다. 즉, 수신된 펄스신호(100)에 대해 레이더의 거리게이트(110)는 전단게이트(Early gate)(120)와 후단게이트(late gate)(130)의 적분차이 값을 영으로 하여 거리오차없이 수신신호인 펄스를 추적하도록 한다. 만약 적분값의 차이가 있는 경우 차이를 영으로 하기 위해 적분값이 차이 만큼 이동하여 다음펄스에서는 적분값을 최소화하는 방향으로 거리게이트를 조절함으로서 거리추적을 수행한다. here,

is the received pulse signal. That is, with respect to the received pulse signal 100, the radar distance gate 110 sets the integral difference value between the early gate 120 and the late gate 130 to zero, and receives without a distance error. Trace the pulse, which is a signal. If there is a difference in the integral value, the integral value moves as much as the difference in order to make the difference zero, and in the next pulse, distance tracking is performed by adjusting the distance gate in a direction to minimize the integral value.

FIG. 2 is a diagram for explaining a distance error of a distance gate of a radar when a bidirectional distance deception signal transmitted by a jammer according to the present invention is received by a distance gate of the radar. With reference to FIG. 2 , if only the two-way distance 200 and 210 are performed with the same acceleration, a distance error in Equation 1 will not occur.

Meanwhile, FIG. 3 is a flowchart illustrating a method for generating only a two-way distancer having an asymmetric acceleration corresponding to a pulse signal according to an embodiment of the present invention.

Referring to FIG. 3, the method for generating a two-way distance deception is a step in which the jammer's deception signal captures the radar pulse signal (S100), the jammer performs only a two-way distance with different accelerations (S200), and the jammer performs a two-way distance with different accelerations. It may include a step (S300) of maintaining the maximum distance by performing only the step (S300) and a step (S400) of repeating only the two-way distance in which the jammer has different accelerations.

As the first step (S100) according to the present invention, the jammer's deceptive signal is a step of capturing the radar pulse signal.

4 is a diagram to explain the distance error of the radar's range gate when the range deceptive signal transmitted by the jammer according to the present invention is received by the radar range gate. Referring to FIG. 4 , it is a diagram showing the generation of only one-way distance signals according to time. The one-way distance deception signal 300 is divided into a capture time 310 and a distance deception section 320 and a maximum distance deception holding time 330 . In this case, the distance deception is generated by Equation 2 as a function of time.

는 초기거리 및

는 거리기만 가속도이다. here,

is the initial distance and

is the distance-only acceleration.

The jammer 300 is a step of receiving a transmission pulse signal of a radar using a pulse and transmitting a bidirectional distance only signal with a large jamming to signal ratio for a predetermined time with respect to the received pulse signal.

이다. 여기서,

은 RGPO의 가속도,

은 RGPI의 가속도이다.In this step, in order to match the threshold value of the radar automatic gain device with the signal of the jammer's deception signal, the radar transmits the jamming signal with a large jamming to signal ratio for a certain period of time so that the radar catches the jamming signal. In this case, each acceleration is

am. here,

is the acceleration of the RGPO,

is the acceleration of the RGPI.

In the second step (S200), the jammer performs only the two-way distance with different accelerations.

In this step, the acceleration of RGPO and the acceleration of RGPI are different, and only distance is performed. In this regard, FIG. 5 illustrates that the jammer generates a bidirectional distance deception signal having an asymmetric acceleration corresponding to a pulse signal according to an embodiment of the present invention.

In FIG. 5, by varying the acceleration of the distance only performing the RGPO 350 and the distance only the performing the RGPI 360, the deceptive signals of the RGPI and the RGPO do not deviate from the distance gate at the distance gate of the radar at the same time. As shown in Equation 3, it is a step of tracking only the distance of one of the two signals by differentiating the integral value of the front-end gate and the integral value of the rear-end gate of the distance gate.

In the third step (S300), the jammer maintains the maximum distance by performing only the two-way distance with different accelerations.

In this stage, the distance signal generated by different acceleration of RGPO and RGPI is maintained for a certain period of time after generating the maximum distance. The range deception signal generated by varying the acceleration maintains the generation of the maximum range deception signal 370 before one cycle ends to perform only the range deception of the radar.

In the fourth step ( S400 ), the jammer repeats only the two-way distance with different accelerations.

In this step, only the distance in which the acceleration of the RGPO and the acceleration of the RGPI are different is repeated. When the range is stopped, the radar re-tracks the target. To prevent this, the jammer continuously repeats the distance gate to prevent re-tracking of the target.

In relation to the above-described technical features, a method and apparatus for generating only a two-way distancer having asymmetric acceleration corresponding to a pulse signal according to the present invention will be described as follows. In this regard, referring to FIGS. 1 to 4 , the method for generating only a two-way distancer having an asymmetric acceleration corresponding to a pulse signal includes the step (S100) of the jammer's deceptive signal capturing the radar pulse signal, the jammer having different accelerations. It may include the step of performing only (S200) and the step of maintaining the maximum distance by performing only the other two-way distance by the jammer (S300).

In this regard, the bidirectional distance deception may be characterized in that RGPO (Range Gate Pull Off) that deceives the distance of the target close and RGPI (Range Gate Pull In) that deceives the distance of the target is generated at the same time. Accordingly, only a two-way distance to a target moving in both directions in a certain range is possible. In this regard, the target moving in both directions may be a radar signal in addition to the moving target. For example, the radar signal may be a radar pulse signal.

In the step (S200) of performing only the two-way distance having different accelerations, the two accelerations may be characterized in that the acceleration of the RGPO and the acceleration of the RGPI are different. Accordingly, in the step (S200) of performing only the two-way distance with different accelerations, the RGPI and the RGPO are deceived in the radar distance gate by varying the acceleration of only the distance performing the RGPO and the distance only performing the RGPI. It can be controlled so that the signal does not leave the street gate at the same time. Therefore, even if one deceptive signal leaves the street gate, it is possible to deceive the street through another deceit signal. That is, through various combinations of RGPO that deceives the distance of the target close and RGPI that deceives the distance of the target far, only various types of bidirectional distance to the target are possible.

In the step (S200) of performing only the two-way distance with different accelerations, the distance for one of the two signals may be tracked by differentiating the integral value of the front gate and the integral value of the rear gate of the distance gate. Therefore, only the distance is possible in an optimal form through the optimal deception signal among the plurality of deception signals.

In the step of maintaining the maximum distance ( S300 ), the range deception signal generated by varying the acceleration maintains the generation of the maximum range deception signal before one period of the range deception signal is completed to perform only the range deception of the radar. Therefore, only the ranger can dynamically change the signal period, so that only the effective two-way distance can be performed even for a target whose distance range of the target is dynamically changed.

In the step (S400) of the jammer repeating only the two-way distance with different accelerations, only the distance may be repeated while the capture time, the distance deception section, and the maximum distance deception holding time are repeated. In this regard, the capture time, the distance deception section, and the maximum distance deception holding time may be set identically for each repetition period. On the other hand, the capture time, the distance deception section, and the maximum distance deception holding time may be set to decrease for each repetition period. Alternatively, the capture time, the distance deception section, and the maximum distance deception holding time may be set to increase for each repetition period. Alternatively, the capture time, the distance deception period, and the maximum distance deception holding time may be alternately set to increase and decrease for each repetition period. In this regard, the acquisition time, the range deception period, and the maximum distance deception holding time may be dynamically set according to the characteristics of the target, for example, a radar pulse signal.

On the other hand, the method for generating only the two-way distancer having asymmetric acceleration corresponding to the pulse signal according to the present invention can be performed by the apparatus for generating only the two-way distancer. In this regard, FIG. 6 shows a detailed configuration of a device for generating only a two-way distance ranger according to the present invention.

The two-way distance only generating device 1000 may be configured to include a jammer 1100 , a controller 1200 , and a memory 1300 . Here, the jammer 1100 may be referred to as a signal transmitter, a jamming signal transmitter, or a spoof signal transmitter.

Jammer 1100 may be configured to transmit a spoof signal or capture a radar signal. The controller 1200 may be configured to control the jammer 1100 that transmits a deceptive signal. Memory 1300 may be configured to store captured radar signals over time. The controller 1200 may transmit a deceptive signal through the jammer 1100 based on the radar signal stored over time and the radar signal currently captured through the jammer 1100 .

In this regard, the controller 1200 may control the deception signal to capture the radar pulse signal through the jammer 1100 . The controller 1200 may control the jammer 1100 to perform only a two-way distance with different accelerations. In this regard, the control unit 1200 receives the radar transmission pulse signal using a pulse and controls the jammer 1100 to transmit only a bidirectional distance signal with a jamming to signal ratio greater than or equal to a threshold value for a predetermined time with respect to the received pulse signal. can

Meanwhile, the controller 1200 may control the jammer 1100 to maintain the maximum distance by performing only the other two-way distance. Also, the controller 1200 may control the jammer 1100 to repeat only a two-way distance having different accelerations.

Meanwhile, the control unit 1200 may simultaneously generate an RGPO that deceives the distance of the target close and an RGPI that deceives the distance of the target at the same time to perform only the two-way distance. Also, the controller 1200 may control the acceleration of the RGPO to be different from the acceleration of the RGPI.

Accordingly, the controller 1200 controls the RGPI and RGPO deceptive signals not to deviate from the distance gate at the same time at the radar distance gate by varying the acceleration of only the distance performing the RGPO and the distance only performing the RGPI. can do. Therefore, even if one deceptive signal leaves the street gate, it is possible to deceive the street through another deceit signal. That is, through various combinations of RGPO that deceives the distance of the target close and RGPI that deceives the distance of the target far, only various types of bidirectional distance to the target are possible.

Meanwhile, the control unit 1200 may track only the distance for one of the two signals by differentiating the integral value of the front-end gate and the integral value of the rear-end gate of the distance gate. Therefore, only the distance is possible in an optimal form through the optimal deception signal among the plurality of deception signals.

On the other hand, the control unit 1200 may perform only the range of the radar by maintaining the generation of the maximum distance deception signal before one period of the range deception signal generated by varying the acceleration is over. Therefore, only the ranger can dynamically change the signal period, so that only the effective two-way distance can be performed even for a target whose distance range of the target is dynamically changed.

Meanwhile, the controller 1200 may control to repeat only the distance while the capture time, the distance deception section, and the maximum distance deception holding time are repeated. In this regard, the capture time, the distance deception section, and the maximum distance deception holding time may be set identically for each repetition period. On the other hand, the capture time, the distance deception section, and the maximum distance deception holding time may be set to decrease for each repetition period. Alternatively, the capture time, the distance deception section, and the maximum distance deception holding time may be set to increase for each repetition period. Alternatively, the capture time, the distance deception period, and the maximum distance deception holding time may be alternately set to increase and decrease for each repetition period. In this regard, the acquisition time, the range deception period, and the maximum distance deception holding time may be dynamically set according to the characteristics of the target, for example, a radar pulse signal.

In the above, a method and apparatus for generating only a two-way distancer having asymmetric acceleration corresponding to a pulse signal according to the present invention have been described. The method and apparatus for generating only a two-way distancer having asymmetric acceleration corresponding to a pulse signal according to the present invention have the following effects.

According to the present invention, in response to a radar tracking a target using a pulse signal, the jammer can generate a signal only for a bidirectional ranger having an asymmetrical acceleration.

The features and effects of the present invention described above will become more apparent through the following detailed description in relation to the accompanying drawings, and accordingly, those of ordinary skill in the art to which the present invention pertains can easily implement the technical idea of the present invention. will be able

Since the present invention can have various changes and can have various embodiments, specific embodiments are illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the present invention to specific embodiments, and it should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention.

According to the software implementation, not only the procedures and functions described in this specification but also the design and parameter optimization for each component may be implemented as a separate software module. The software code may be implemented as a software application written in a suitable programming language. The software code may be stored in a memory and executed by a controller or a processor.

Claims (10)

A method for generating only a two-way distancer having an asymmetric acceleration corresponding to a pulse signal,
The jammer's deceptive signal captures the radar pulse signal;
The jammer performing only a two-way distance with different accelerations:
maintaining the maximum distance by performing only the other two-way distance by the jammer; and
The jammer repeats only the two-way distance with different accelerations,
The two-way distance deception includes RGPO (Range Gate Pull Off) that deceives the distance of the target close and RGPI (Range Gate Pull In) that deceives the distance of the target far,
In order that the RGPI spoofing signal and the RGPO spoofing signal do not deviate from the distance gate at the same time in the distance gate of the radar, the acceleration of the distance only performing the RGPO and the acceleration of the distance only performing the RGPI are set differently from each other,
Bidirectional with asymmetric acceleration corresponding to a pulse signal, characterized in that one of the spoofing signal of the RGPI and the spoofing signal of the RGPO is tracked by differentiating the integral value of the front gate and the integral value of the rear gate of the distance gate How distance only occurs. delete delete delete delete According to claim 1,
In the step of maintaining the maximum distance,
A method of generating only a two-way ranger with asymmetrical acceleration corresponding to a pulse signal, in which the range deception signal generated by varying the acceleration maintains the generation of the maximum range deception signal before one cycle ends to perform only the range of the radar. 7. The method of claim 6,
In the step of the jammer repeating only the two-way distance with different accelerations,
A method for generating only a two-way distancer having asymmetric acceleration corresponding to a pulse signal, characterized in that the distance only is repeated while the capture time, the distance deception section, and the maximum distance deception holding time are repeated. In the device for generating only a two-way distance with asymmetric acceleration corresponding to a pulse signal,
a jammer configured to transmit a spoof or capture a radar signal; and
a control unit configured to control the jammer transmitting the spoof signal;
The control unit is
Controlling the deceptive signal to capture the radar pulse signal through the jammer,
Control the jammer to perform only two-way distances with different accelerations,
Control the jammer to maintain the maximum distance by performing only the other two-way distance,
Control the jammer to repeat only the two-way distance with different accelerations,
The two-way distance deception includes RGPO (Range Gate Pull Off) that deceives the distance of the target close and RGPI (Range Gate Pull In) that deceives the distance of the target far,
In order that the RGPI spoofing signal and the RGPO spoofing signal do not deviate from the distance gate at the same time in the distance gate of the radar, the acceleration of the distance only performing the RGPO and the acceleration of the distance only performing the RGPI are set differently from each other,
A bidirectional distance deception generating apparatus, wherein one of the deceptive signal of the RGPI and the deceptive signal of the RGPO is tracked by differentiating the integral value of the front-end gate and the integral value of the rear-end gate of the distance gate. delete delete

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