KR20020089734A - A controller and method for jamming - Google Patents

Abstract

PURPOSE: A jamming controller and a jamming control method are provided to perform simultaneously jamming processes for multiple threats by using a jamming method utilizing a DTO(Digitally Tuned Oscillator). CONSTITUTION: The first unit(10) is used for assigning an asynchronous resource. The second unit(20) receives a state of assigned asynchronous resource from the first unit(10) and an address of a 64 counter and programs data of the corresponding address. The fourth unit(40) receives the first PDTO, the second PDTO, the first FRDTO, and the second FRDTO signals from the second unit(20). The third unit(30) receives a read signal and a chip cell signal from the fourth unit(40) and outputs a stored threat information to the fourth unit(40) through parallel data. The threats assigned to DTO1 and DTO2 is varied according to the number of threat in the second unit(20).

Description

Jammer control and jamming control method {A controller and method for jamming}

The present invention relates to a jamming (jamming) method and apparatus for disturbing radio waves for position detection, and more particularly, to control two DTOs in jamming by applying two DTOs (Digitally Tuned Oscillator). The present invention relates to a jamming control device and a control method thereof.

Radar signals are used to detect an opponent's plane or ship, or to automatically track a guided object. When the other party receives a radar signal sent to capture our ship or plane, it analyzes the repetition period of the received signal to perturb or avoid it, to determine which radar signal it is, and to jamming the signal. Will be implemented.

Jamming is a method that prevents the detection of itself or interferes with the detection by transmitting a jamming wave to the other radar by using a jamming transmitter, and is classified as follows according to the modulation method and the frequency operation width of the used wave. can do.

Modulation methods include continuous wave (CW), pulse (noise), and noise (noise).

(1) Continuous Wave (CW) Jamming

Jammer equipment is relatively simple as interference caused by unmodulated sustained waves, and the radar scope saturates white when subjected to this interference. However, it is effective only at close range and vulnerable to tkdeovusd ECCM.

(2) Pulse method

Unlike the sustained wave method, a dot appears in front of the radar scope, making it impossible to distinguish which is the actual target.

(3) Noise method

Also known as saturation jamming, it transmits irregularly modulated radio waves to receive severe noise from radar equipment that transmits radio waves for position detection, weakening or paralyzing the function. do. This jamming has the advantage that it is relatively difficult to deal with ECCM because it can widen the disintegration frequency band.

The classification by frequency operating range includes spot jamming, sweep jammming, and wide band jamming.

(1) Spot Jamming

It is possible to know the transmission frequency of the radar that transmits the radio wave for the position detection by narrowband interference method, and it is possible to continuously and intensively interrupt the radar which transmits the radio wave by tuning to the frequency.

Point jamming has the advantage that it can effectively disturb even if the output of the used jamming equipment is relatively weak because it uses a single frequency, but at the same time it cannot interfere with multiple radars, and it is ineffective even if the frequency is slightly wrong. This is necessary.

Spot jamming should be tuned by selecting one of the following modes: continuous wave jamming, noise jamming, and pulse jamming. In ECCM method, ECCM should be performed by changing the frequency.

(2) Sweet Jamming

Jamming that tracks and tunes the frequency of the radar transmitting radio waves while repeatedly moving the jamming signal using a narrow frequency band signal such as point jamming to detect the position. to be. This jamming is performed near the frequency band when the radar transmitting frequency is not known exactly to detect the position. It does not require an experienced operator and has the advantage of affecting multiple radars at once. However, because the jamming signal continues to move, the jamming effect may be temporary and small because the time to stay in an optimal state that disturbs the radar transmitting radio waves is less.

Minor jamming, like spot jamming, uses one of noise jamming or continuous wave and pulse jamming. In the position of disturbed ground radar operators, sweeping jams are easy to identify because strobes appear on the scope at regular intervals, and common ECCM techniques use ECCM circuits to filter out jammers and, in extreme cases, to change frequencies. do.

(3) Barrage Jamming

It is a kind of noise jamming, also known as Broad Band Jamming, which disturbs or disturbs the entire frequency band of the counterpart radar at the same time when you don't know exactly the transmission frequency of the radar that transmits the radio wave for position detection.

Wideband jamming interferes with the entire frequency range of the radar that transmits radio waves, so no matter how the frequency is changed, jamming is not effective. Especially, it is effective for radars that can be changed in frequency, such as continuous variable frequency radar. However, the disadvantage is that it requires higher power than point jamming.

This wideband jamming is rare in sustained wave and pulse jamming, and most uses noise jamming.

Conventionally, DTO is used as a jammer, and the order of controlling two DTOs against a plurality of threats is shown in Table 1. As shown in Table 1, in case of two threats, threat 1 and threat 2 were sequentially assigned to DTO 1 and DTO 2.

division DTO1 DTO2 DTO1 DTO2 DTO1 DTO2 DTO1 DTO2 DTO1 1 threat Threat 1 Threat 1 Threat 1 Threat 1 Threat 1 Threat 1 Threat 1 Threat 1 Threat 1 2 threats Threat 1 Threat 2 Threat 1 Threat 2 Threat 1 Threat 2 Threat 1 Threat 2 Threat 1 3 threats Threat 1 Threat 2 Threat 3 Threat 1 Threat 2 Threat 3 Threat 1 Threat 2 Threat 3 4 threats Threat 1 Threat 2 Threat 3 Threat 4 Threat 1 Threat 2 Threat 3 Threat 4 Threat 1

In the above allocation method, when one of the two DTOs fails and cannot be used, a problem occurs in which one of the two threats cannot be coped with.

SUMMARY OF THE INVENTION An object of the present invention is to provide a jamming control device and a jamming method for enabling jamming simultaneously against multiple threats simultaneously applied in a jamming technique using DTO (Digitally Tuned Oscillator).

In addition, the present invention provides a jamming control device and a method for controlling the jamming by maximizing the jamming effect by performing a jamming in a manner that sequentially divides the threat in a predetermined order by dividing time in performing jamming control. There is a purpose.

The present invention applies a jamming technique to the DTO (Digitally Tuned Oscillator) by applying a DTO (Digitally Tuned Oscillator) against a plurality of threats at the same time when one of the two DTO is not used due to failure control of jamming effectively to another DTO The object is to provide an apparatus and a jamming control method.

1 is a block diagram showing a time division circuit applied to the present invention.

2 is a flow chart for explaining the operation of the jamming control device of the present invention;

<Explanation of symbols for the main parts of the drawings>

10: unit 120: unit 2

30: unit 340: unit 4

In order to achieve the above object, an apparatus for controlling jamming and a method of controlling the jamming according to the present invention include a unit 1 (10) for allocating an asynchronous resource, a resource state allocated from the unit 1 (10), and 64 counters as an address. Unit 2 (20) in which data of the corresponding address is programmed as shown in Table 2, and unit 4 (40) receiving the first PDTO, the second PDTO, the first FRDTO, and the second FRDTO signal from the unit 2 (20). And a unit 3 (30) for receiving the read and chip cell signals input from the unit 4 (40) and simultaneously outputting threat information stored in the parallel bus data to the unit 4 (40).

Here, the unit 2 (20) is characterized in that the threats assigned to DTO1 and DTO2 is variable as shown in Table 2 according to the number of threats.

In addition, in order to achieve the above object, the jamming control apparatus and the control method according to the present invention comprises the steps of storing the allocated threat for each channel, outputting multiple threat time division order information according to the assigned asynchronous resource state and order, And outputting corresponding threat number data according to the multiple threat time division order information.

The configuration and operation of the jamming control apparatus and its control method according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 and 2 as follows.

Digitally tuned oscillator (DTO) is a device for generating a frequency for jamming, jammer is a device for interfering the radio wave to the opponent using the DTO.

According to the jammer control apparatus according to the present invention, the time division concept is applied to simultaneously jamming against multiple threats simultaneously inputted by the jamming technique using the DTO.

division DTO1 DTO2 DTO1 DTO2 DTO1 DTO2 DTO1 DTO2 DTO1 DTO2 1 threat Threat 1 Threat 1 Threat 1 Threat 1 Threat 1 Threat 1 Threat 1 Threat 1 Threat 1 Threat 1 2 threats Threat 1 Threat 2 Threat 1 Threat 2 Threat 1 Threat 2 Threat 1 Threat 2 Threat 1 Threat 2 3 threats Threat 1 Threat 2 Threat 3 Threat 3 Threat 2 Threat 1 Threat 1 Threat 2 Threat 3 Threat 3 4 threats Threat 1 Threat 2 Threat 3 Threat 4 Threat 4 Threat 3 Threat 2 Threat 1 Threat 1 Threat 2

Time division is a method of dividing the time and responding to the threats sequentially in a certain order. Even if jamming is performed in this order, the jamming effect can be sufficiently exhibited since it is an extremely short time. The above multiple threat time division order is programmed in unit 2 (20) using EEPROM and the basic concept is shown in Table 2.

An embodiment of the control of the DTO according to Table 2 will be described.

In Table 2, the operating time of DTO1 and DTO2 is 4uS, and DTO1 and DTO2 are continuously alternating to cope with multiple threats.

If the number of threats is two, the order of threat allocation is as follows: 1,2,2,1. The threat order assigned to 1,2,2,1 is to enable jamming even when either of the two DTOs fails. By assigning the threat order to the DTO as described above, DTO1 not only jams the first threat, but also jams the second threat in the next sequence, even if one of the two DTOs fails and cannot be used. And the second threat.

An embodiment of the case where the number of threats is three is as follows.

In the case of three threats, the threat order assigned to the DTO is 1,2,3,3,2,1. The reason for the assigned threat order is as follows 1,2,3,3,2,1 so that all three threats can be jammed even when either of the two DTOs is fixed. By assigning the threat order to the DTO as described above, DTO1 does not jam only the first threat, but jamming the second threat when the next DTO1 is driven, and jamming the third threat when the next DTO1 is driven. It is configured to be jamming against both the second and third threats.

According to the jammer control apparatus according to the present invention, as described above, a plurality of threats can be jammed against a plurality of threats by using the threat order assigned to DTO1 and DTO2 in the allocation method as shown in Table 1.

In the method of allocating the threat sequence as described above, Table 2 is programmed and stored in the unit 2 (20) using the EEPROM. The operation of the time division circuit including the unit 2 (20) using the EEPROM will be described in detail with reference to FIG.

As shown in Figs. 1 and 2, the allocation channel number and the threat number for each threat are stored in the unit 3 (30) using the DPRAM. When the asynchronous resources RESOURCE1 to 4 are allocated, the allocated resource state and 64 counters are input to the address of the unit 2 (20) using the EEPROM, and the data of the corresponding address is input to the unit 2 (20) using the EEPROM as shown in Table 2 below. It is programmed and output.

ADDR0-2 output from the unit 2 (20) using the EEPROM is input to the address of the unit 3 (30) using the DPRAM, and the first PDTO, the second PDTO and the first FRDTO, and the second FRDTO signal are the units using the EPLD. 4 and 40 are input to generate READ and CHIP SEL signals of unit 3 (30) using DPRAM to output threat number data stored in unit 3 (30) using DPRAM.

As described above, according to the jamming establishment device and the control method thereof, in the time division jamming using a plurality of DTOs, all of the plurality of threats can be jammed even if one of the DTOs does not operate due to an abnormality. .

In addition, as a method of dividing time and threatening several threats in a sequential order sequentially, even if the jamming is performed sequentially, the jamming effect is sufficiently exhibited.

Claims (6)

Resource allocation means for allocating asynchronous resources, multiple threat time division order storage means for receiving the asynchronous resource allocation and its control and outputting a DTO control signal according to a multiple threat time division order, and a DTO control signal according to the multiple threat time division order And control means for outputting a control signal for outputting threat number data, and threat number data storage means for storing the assigned threat for each channel and outputting the stored threat number data according to the control signal. Jamming controller. 2. The jamming control apparatus according to claim 1, wherein the DTO1 and the DTO2 are continuously altered when outputting threat number data according to the control of the control means. 2. The apparatus of claim 1, further comprising: data stored in said multiple threat time division order storage means; division DTO1 DTO2 DTO1 DTO2 DTO1 DTO2 DTO1 DTO2 DTO1 1 threat Threat 1 Threat 1 Threat 1 Threat 1 Threat 1 Threat 1 Threat 1 Threat 1 Threat 1 2 threats Threat 1 Threat 2 Threat 2 Threat 1 Threat 1 Threat 2 Threat 2 Threat 1 Threat 1 3 threats Threat 1 Threat 2 Threat 3 Threat 3 Threat 2 Threat 1 Threat 1 Threat 2 Threat 3 4 threats Threat 1 Threat 2 Threat 3 Threat 4 Threat 4 Threat 3 Threat 2 Threat 1 Threat 1 Jamming control device, characterized in that stored as. Storing the allocated threats for each channel, outputting multiple threat time division order information according to the allocated asynchronous resource state and order, and outputting corresponding threat number data according to the multiple threat time division order information; Jamming control method characterized in that the control. The method of claim 4, wherein Jamming control method characterized in that the output of the threat number data according to the multi- threat time division order information is alternately DTO1, DTO2. The method of claim 5, Jamming control method characterized in that when the DTO1, DTO2 are alternating, the order of the threat is assigned in the order of threat 1, threat 2, threat 2, threat 1.