阅读说明：本技术 一种干扰资源配置方法和装置 (Interference resource allocation method and device ) 是由 高路 刘佳琪 曹阳 刘洪艳 李虎 白锦良 秦鹏 江志烨 刘成国 陈姝媛 郭磊 于 2020-04-22 设计创作，主要内容包括：本发明涉及一种干扰资源配置方法和装置,涉及雷达信号处理技术领域。该干扰资源配置方法包括：对协同干扰系统的各台干扰机侦查到的雷达信号进行分选识别,并对分选识别结果进行信息融合处理,以得到信息融合处理后的雷达信号；对所述信息融合处理后的雷达信号进行威胁评估,以得到各个雷达信号的威胁评估结果；根据所述各个雷达信号的威胁评估结果确定所述协同干扰系统中的干扰资源配置方式,以基于所述干扰资源配置方式对各个雷达进行干扰。通过以上步骤,不仅能够提高针对雷达信号的协同干扰效果,而且实时性好、灵活性强、且算法实现简单,克服了以往方法的缺点,特别适用于协同干扰系统。(The invention relates to an interference resource allocation method and device, and relates to the technical field of radar signal processing. The interference resource allocation method comprises the following steps: sorting and identifying radar signals detected by various interference machines of the cooperative interference system, and performing information fusion processing on sorting and identifying results to obtain radar signals subjected to information fusion processing; threat assessment is carried out on the radar signals subjected to the information fusion processing, so that threat assessment results of all the radar signals are obtained; and determining an interference resource configuration mode in the cooperative interference system according to the threat assessment result of each radar signal, so as to interfere each radar based on the interference resource configuration mode. Through the steps, the cooperative interference effect aiming at the radar signal can be improved, the real-time performance is good, the flexibility is strong, the algorithm is simple to realize, the defects of the conventional method are overcome, and the method is particularly suitable for a cooperative interference system.)

1. A method for configuring interference resources, the method comprising:

sorting and identifying radar signals detected by various interference machines of the cooperative interference system, and performing information fusion processing on sorting and identifying results to obtain radar signals subjected to information fusion processing; each interference machine in the cooperative interference system detects radar signals in a time-sharing detection mode;

threat assessment is carried out on the radar signals subjected to the information fusion processing, so that threat assessment results of all the radar signals are obtained;

and determining an interference resource configuration mode in the cooperative interference system according to the threat assessment result of each radar signal, so as to interfere each radar based on the interference resource configuration mode.

2. The method of claim 1, further comprising:

judging whether the interference resource allocation mode is effective or not; under the condition that the interference resource configuration mode is invalid, updating the interference resource configuration mode to interfere each radar based on the updated interference resource configuration mode; and keeping the interference resource allocation mode unchanged under the condition that the interference resource allocation mode is effective.

3. The method of claim 2, wherein the determining whether the interference resource allocation pattern is valid comprises:

after the interference resource configuration mode is adopted, average threat assessment values of radar signals in two adjacent investigation periods are compared; confirming that the interference resource configuration mode is effective under the condition that the comparison result shows that the average threat evaluation value of the radar signal is reduced; confirming that the interference resource configuration mode is invalid under the condition that the comparison result shows that the average threat assessment value of the radar signal is unchanged or is increased; the average threat assessment value of the radar signals is obtained by averaging threat assessment results of the radar signals in the same investigation period.

4. The method according to claim 1, wherein the threat assessment of the radar signals after the information fusion processing to obtain a threat assessment result of each radar signal comprises: and determining the threat assessment result of each radar signal according to the bandwidth, the repetition frequency and the pulse width of the radar signal subjected to the information fusion processing.

5. The method of claim 4, wherein determining the threat assessment result for each radar signal according to the bandwidth, the repetition frequency, and the pulse width of the radar signal after the information fusion process comprises:

for each radar signal subjected to information fusion processing, determining a bandwidth threat assessment factor value, a repetition frequency threat assessment factor value and a pulse width threat assessment factor value of the radar signal in a table look-up manner; and carrying out weighted summation on the bandwidth threat assessment factor value, the repetition frequency threat assessment factor value and the pulse width threat assessment factor value of the radar signal to obtain a threat assessment result of the radar signal.

6. The method of claim 1, wherein the determining the interference resource allocation in the co-jamming system according to the threat assessment result of each radar signal comprises:

determining the threat level of each radar signal according to the threat assessment result of the radar signal; and for radar signals with different threat levels, respectively configuring corresponding jammers for jamming according to a preset configuration principle.

7. The method of claim 1, further comprising:

before the step of sorting and identifying the radar signals detected by the cooperative interference system, establishing a communication network of the cooperative interference system, and performing time synchronization processing on each jammer in the cooperative interference system.

8. An apparatus for interference resource configuration, the apparatus comprising:

the radar signal processing module is used for sorting and identifying radar signals detected by all jammers of the cooperative jamming system and performing information fusion processing on sorting and identifying results to obtain radar signals subjected to information fusion processing; each interference machine in the cooperative interference system detects radar signals in a time-sharing detection mode;

the threat assessment module is used for carrying out threat assessment on the radar signals subjected to the information fusion processing to obtain threat assessment results of the radar signals;

and the interference resource configuration module is used for determining an interference resource configuration mode in the cooperative interference system according to the threat assessment result of each radar signal so as to interfere each radar based on the interference resource configuration mode.

9. A cooperative jamming system, characterized in that said system comprises:

the master jammer is used for dividing a detection period into a plurality of detection time windows and sending information carrying the detection time windows to the slave jammers;

the system comprises at least one slave jammer, a master jammer and a slave jammer, wherein the slave jammer is used for detecting radar signals in a corresponding detection time window and reporting the detected radar signals to the master jammer;

the main jammer is provided with the interference resource allocation device according to claim 8, and further configured to determine an interference resource allocation manner in a cooperative interference system based on the interference resource allocation device.

10. A computer storage medium on which a computer program is stored, which program, when executed by a processor, carries out the method according to any one of claims 1-7.

Technical Field

The invention relates to the technical field of radar signal processing, in particular to an interference resource configuration method and device.

Background

With the rapid development of radar technology, radar signals become abnormally dense, the signal density is rapidly increased, and the electronic anti-electromagnetic environment becomes more and more complex. Meanwhile, with the development of the modern radar system, the anti-interference performance of the radar becomes more perfect. In many cases, a single jammer cannot effectively interfere with a single radar with excellent performance, and if a radar network consisting of multiple radars is faced, the single jammer cannot complete the jamming task. Therefore, in the prior art, a technical scheme of a multi-jammer against multi-radar is proposed. In the technical scheme, each jammer works independently, and although the real-time performance of interference is guaranteed, the jammers may have the problem of incompatible working modes, which causes serious waste of interference resources. In order to solve the problem, a cooperative interference system scheme is proposed.

The interference resource allocation method in the existing cooperative interference system mainly includes two methods: the method comprises the steps of allocating interference resources based on frequency domain division and allocating interference resources based on time domain division. Fig. 1 is a schematic diagram illustrating a principle of an interference resource allocation method based on frequency domain division. In the method, a main jammer node determines frequency band information of each radar in a current combat area according to a radar signal sorting result, and different jammers are allocated to interfere radar signals in different frequency bands. Fig. 2 is a schematic diagram of a principle of an interference resource allocation method based on time domain division. In the method, a time synchronization mechanism is adopted among all the cooperative jammers, unified scheduling is formed on a time domain, a main jammer node divides an interference period into different time segments, and different jammers are allocated to interfere radar signals in the respective time segments.

In the process of implementing the present invention, the inventor of the present invention finds that the following problems exist in the existing interference resource configuration method: first, although the method for configuring interference resources based on frequency domain division is simple to implement, it also has great limitations. On one hand, when the radars all work at close frequency, the radars are difficult to be accurately distinguished in the frequency domain, so that the interference frequency bands of all the jammers are difficult to be finely distributed, and the configuration of interference resources is invalid; on the other hand, when the radar signals in each frequency band are not uniformly distributed, the interference resource configuration may be unbalanced, so that a situation of lack of interference resources occurs in some frequency bands, and a situation of waste of interference resources occurs in other frequency bands. And secondly, the interference resource configuration method based on time domain division is to distribute interference resources on a time domain, and the radar signal sorting identification link is lacked, so that the radar signal sorting identification method has certain limitation. On the one hand, this method does not allow for a concentrated and precise interference of a specific radar signal; on the other hand, the method has a high requirement on the time slot division length, if the time slot division is too long, each jammer is equivalent to independently interfere all the current radars, and a cooperative interference effect cannot be achieved, and if the time slot division is too short, interference signal collision may be caused, so that interference resources are wasted, and further the final interference effect is poor.

Therefore, in view of the above disadvantages, it is desirable to provide a new interference resource configuration method and apparatus.

Disclosure of Invention

Technical problem to be solved

The technical problem to be solved by the invention is to solve the problems of poor interference effect, poor flexibility and the like of the existing interference resource allocation method.

(II) technical scheme

In order to solve the above technical problem, in one aspect, the present invention provides an interference resource allocation method.

The interference resource allocation method comprises the following steps: sorting and identifying radar signals detected by various interference machines of the cooperative interference system, and performing information fusion processing on sorting and identifying results to obtain radar signals subjected to information fusion processing; each interference machine in the cooperative interference system detects radar signals in a time-sharing detection mode; threat assessment is carried out on the radar signals subjected to the information fusion processing, so that threat assessment results of all the radar signals are obtained; and determining an interference resource configuration mode in the cooperative interference system according to the threat assessment result of each radar signal, so as to interfere each radar based on the interference resource configuration mode.

Optionally, the method further comprises: judging whether the interference resource allocation mode is effective or not; under the condition that the interference resource configuration mode is invalid, updating the interference resource configuration mode to interfere each radar based on the updated interference resource configuration mode; and keeping the interference resource allocation mode unchanged under the condition that the interference resource allocation mode is effective.

Optionally, the determining whether the interference resource configuration manner is valid includes: after the interference resource configuration mode is adopted, average threat assessment values of radar signals in two adjacent investigation periods are compared; confirming that the interference resource configuration mode is effective under the condition that the comparison result shows that the average threat evaluation value of the radar signal is reduced; confirming that the interference resource configuration mode is invalid under the condition that the comparison result shows that the average threat assessment value of the radar signal is unchanged or is increased; the average threat assessment value of the radar signals is obtained by averaging threat assessment results of the radar signals in the same investigation period.

Optionally, the threat assessment performed on the radar signals subjected to the information fusion processing to obtain a threat assessment result of each radar signal includes: and determining the threat assessment result of each radar signal according to the bandwidth, the repetition frequency and the pulse width of the radar signal subjected to the information fusion processing.

Optionally, the determining the threat assessment result of each radar signal according to the bandwidth, the repetition frequency, and the pulse width of the radar signal after the information fusion processing includes: for each radar signal subjected to information fusion processing, determining a bandwidth threat assessment factor value, a repetition frequency threat assessment factor value and a pulse width threat assessment factor value of the radar signal in a table look-up manner; and carrying out weighted summation on the bandwidth threat assessment factor value, the repetition frequency threat assessment factor value and the pulse width threat assessment factor value of the radar signal to obtain a threat assessment result of the radar signal.

Optionally, the determining, according to the threat assessment result of each radar signal, an interference resource configuration manner in the cooperative interference system includes: determining the threat level of each radar signal according to the threat assessment result of the radar signal; and for radar signals with different threat levels, respectively configuring corresponding jammers for jamming according to a preset configuration principle.

Optionally, the method further comprises: before the step of sorting and identifying the radar signals detected by the cooperative interference system, establishing a communication network of the cooperative interference system, and performing time synchronization processing on each jammer in the cooperative interference system.

In order to solve the above technical problem, in another aspect, the present invention further provides an interference resource allocation apparatus.

The interference resource allocation device of the present invention includes: the radar signal processing module is used for sorting and identifying radar signals detected by all jammers of the cooperative jamming system and performing information fusion processing on sorting and identifying results to obtain radar signals subjected to information fusion processing; each interference machine in the cooperative interference system detects radar signals in a time-sharing detection mode; the threat assessment module is used for carrying out threat assessment on the radar signals subjected to the information fusion processing to obtain threat assessment results of the radar signals; and the interference resource configuration module is used for determining an interference resource configuration mode in the cooperative interference system according to the threat assessment result of each radar signal so as to interfere each radar based on the interference resource configuration mode.

In order to solve the above technical problem, in yet another aspect, the present invention further provides a cooperative interference system.

The cooperative interference system of the present invention includes: the master jammer is used for dividing a detection period into a plurality of detection time windows and sending information carrying the detection time windows to the slave jammers; the system comprises at least one slave jammer, a master jammer and a slave jammer, wherein the slave jammer is used for detecting radar signals in a corresponding detection time window and reporting the detected radar signals to the master jammer; the main jammer is provided with the interference resource allocation device provided by the invention and is also used for determining an interference resource allocation mode in the cooperative interference system based on the interference resource allocation device.

To solve the above technical problem, in yet another aspect, the present invention further provides a computer storage medium.

The computer storage medium of the present invention stores thereon a computer program, which when executed by a processor implements the interference resource allocation method provided by the present invention.

(III) advantageous effects

The technical scheme of the invention has the following advantages: the method comprises the steps of sorting and identifying radar signals detected by all jammers of a cooperative jamming system, carrying out information fusion processing on sorting and identifying results to obtain radar signals subjected to information fusion processing, carrying out threat assessment on the radar signals subjected to the information fusion processing to obtain threat assessment results of all the radar signals, and determining a jamming resource configuration mode in the cooperative jamming system according to the threat assessment results of all the radar signals.

Drawings

Fig. 1 is a schematic diagram illustrating a principle of an interference resource allocation method based on frequency domain division;

fig. 2 is a schematic diagram illustrating a principle of an interference resource allocation method based on time domain division;

fig. 3 is a schematic main flowchart of an interference resource allocation method according to a first embodiment of the present invention;

FIG. 4 is a schematic diagram of an exemplary partitioned investigative time window;

fig. 5 is a schematic main flowchart of an interference resource allocation method according to a second embodiment of the present invention;

fig. 6 is a schematic diagram of a main configuration of an interference resource allocation apparatus according to a third embodiment of the present invention;

fig. 7 is a schematic diagram of a main configuration of an interference resource allocation apparatus according to a fourth embodiment of the present invention;

fig. 8 is a schematic diagram of main components of a cooperative interference system according to a fifth embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.