STAP radar distributed interference method based on MPBI decomposition

A distributed and radar technology, applied in the field of radar, can solve the problems of intercepting radar interference effect, weak interference signal, poor interference effect, etc.

Active Publication Date: 2021-09-10
XIDIAN UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

This method proposes to use multiple jammers for jamming, which is different from the traditional one-to-one mode, and the jamming effect on STAP radar is significantly improved. However, the method still has the disadvantage that the energy of ground scattered waves is small , the interference signal that can be received by the radar is too weak. In order to achieve effective interference with the intercepted radar, each jammer needs to transmit a large power at the same time. Since the direction and position of each jammer are different, different interferences received by the intercepted radar The power of the interference signal transmitted by the machine is different. Among the received interference signals, only the signal whose power is within a specific range can achieve the interference effect, so this method will cause power loss.
At the same time, the radar interference resource allocation scenario is often a one-to-one mode of a single jammer against a single radar. Therefore, when the number of intercepted radars increases and the interference patterns change, the jammer cannot suppress the STAP radar very well.
However, to add multiple jammers, it is necessary to consider that the jammers will be affected by various factors such as jamming patterns, jamming power, and frequency bands. effectiveness cannot be guaranteed
[0005] At present, when the number of jammers is small, the traditional single-point source main lobe jamming and long-distance support sidelobe jamming cannot effectively deal with multiple radars. The jamming signal is easily suppressed by the STAP radar and cannot achieve the effect of jamming. The jamming method for STAP radar does not allocate the jamming power of the jammer, but uses the same jamming power for jamming. This method consumes a lot of power for the jammer. Due to the above factors, the jamming of the STAP radar is now not effectively

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  • STAP radar distributed interference method based on MPBI decomposition
  • STAP radar distributed interference method based on MPBI decomposition
  • STAP radar distributed interference method based on MPBI decomposition

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Embodiment 1

[0034] The existing radar interference resource allocation scenarios are often in a one-to-one mode, so when the number of intercepted radars increases and the interference pattern changes, the jammer cannot suppress the STAP radar very well, and the large interference power loss is also one of the difficulties in suppressing the STAP radar. 1. The present invention conducts research on the optimization problem of this difficult point, and proposes an algorithm based on MPBI on this basis, optimally allocates interference resources, and realizes effective interference to STAP radar.

[0035] The present invention is a kind of STAP radar distributed interference signal generation method based on MPBI decomposition, see figure 1 , use multiple jammers to form distributed cooperative jamming on multiple intercepting radars, referred to as many-to-many, including the following steps:

[0036] (1) Initialize the parameters of the jammer and determine the danger level of the interce...

Embodiment 2

[0055] The STAP radar distributed jamming method based on MPBI algorithm is the same as embodiment 1, and the described initialization of step (1) of the present invention intercepts radar and jammer parameters, and its steps are as follows:

[0056] (1a) Determine the danger level of the intercepted radar: determine the danger level of each radar according to the key parameters of the intercepted radar, assuming that the key parameters are the carrier frequency, signal duration, and transmission power of the signals of each radar; let the number of intercepted radars be N Department, the intercepted radars form a radar network, and the set of intercepted radars is C=[C 1 ,C 2 ,...,C i ,...,C N ], C i Indicates the i-th intercepted radar, where the subscript i is the serial number of the intercepted radar, and i takes an integer; the hazard level is determined according to the key parameters, and the set of hazard levels is ω r1 ,ω r2 ,...,ω ri ,...,ω rN , ω ri Indicat...

Embodiment 3

[0060] The STAP radar distributed interference method based on the MPBI algorithm is the same as embodiment 1-2, and the resource scheduling mathematical model F (x) described in step (2) of the present invention is established, and its objective function is as shown in the following formula:

[0061]

[0062] where F(x) is f 1 (x), f 2 (x),...,f N set of (x), f i (x) represents the interference target function corresponding to the interception radar of the i-th part, ω ri Indicates the threat level of the intercepted radar received by the i-th part, and the value is a real number between 0 and 1, a ji is the space-time interference factor of the j-th jammer to the i-th intercepted radar, and the value is a real number between 0 and 1, s ji is the jamming pattern adopted when the j-th jammer interferes with the i-th radar, s ji The value is a continuous natural number, representing different interference patterns, p ji It is the normalized interference power of the j-...

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Abstract

The invention discloses a STAP radar distributed interference signal generation method based on MPBI decomposition. The problems that in the prior art, the energy loss of an interference signal of an STAP radar is too large, and multiple targets cannot be interfered at the same time are solved. The method comprises the following implementation steps: initializing jammer parameters and judging a danger level of an interception radar; establishing an interference resource scheduling mathematical model F(x); setting interference constraint conditions; setting a population optimal solution set and a weight vector; executing a standard genetic algorithm to generate a new individual; updating population ideal points according to the dominating relation; searching an optimal solution of the model by utilizing MPBI decomposition operation; obtaining a population optimal solution set after evolution; and distributing the optimal solution set data to complete the distributed interference on the radar networking. The optimal solution set is obtained through the MPBI algorithm and allocated to the interference resource scheduling model, the power loss is reduced, the interference success rate is improved, the flexibility is high, and the method is used for a many-to-many interference scene composed of multiple jammers and STAP radars.

Description

technical field [0001] The invention belongs to the technical field of radar, and further relates to a radar jamming method, specifically a space-time adaptive processing STAP (Space-Time Adaptive Processing) radar distribution based on MPBI (M-Penalty-based Boundary Intersection) decomposition interference method. It is used for the jammer to solve the optimal solution of the objective function, and then use the jamming signal generated by the optimal solution to jam the intercepting radar. Background technique [0002] Compared with the relatively simple clutter suppression process of ground-based radar, the signal detection environment faced by airborne radar is more complex. In order to effectively suppress jamming signals, the airborne radar uses STAP (Space-Time Adaptive Processing) technology for anti-jamming. STAP radar has strong adaptability and can effectively suppress strong clutter and conventional jamming. It can be seen that the STAP radar with superior clut...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/38G06N3/00G06N3/12
CPCG01S7/38G06N3/006G06N3/126
Inventor 刘高高王钊席昕鲍丹蔡晶晶武斌秦国栋李鹏
Owner XIDIAN UNIV
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