Centralized and Distributed Suppression Interference Discrimination Method Based on Cross-location Point Correlation in Three-coordinate Radar Network

A technology for cross positioning and suppressing interference, which is applied in the direction of radio wave measurement systems and instruments, and can solve problems such as the inability to use three-coordinate radar networking, the inability to obtain intersection points, and the construction of test statistics

Inactive Publication Date: 2018-10-02
NAVAL AVIATION UNIV
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Problems solved by technology

[0007] (1) Cannot be used in three-coordinate radar networking, only applicable to two-coordinate radar networking
In the three-coordinate radar network, the probability of two direction lines intersecting is extremely small, so the intersection point and construction test statistics cannot be obtained by using the background technology
[0008] (2) The number of networked radars must be greater than two

Method used

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  • Centralized and Distributed Suppression Interference Discrimination Method Based on Cross-location Point Correlation in Three-coordinate Radar Network
  • Centralized and Distributed Suppression Interference Discrimination Method Based on Cross-location Point Correlation in Three-coordinate Radar Network
  • Centralized and Distributed Suppression Interference Discrimination Method Based on Cross-location Point Correlation in Three-coordinate Radar Network

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[0082] The centralized and distributed suppression interference discrimination method based on cross-location point association of the three-coordinate radar network of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0083] Example conditions: without loss of generality, the position coordinates of two radars are respectively (0,0,0), (5×10 4 ,0,0), the unit is m, change the angle measurement accuracy of radar 1 from 0.05 0 becomes 0.3 0 , the number of Monte Carlo simulations is 500 times; Scenario 1, there are two high-power centralized suppression jammers, the positions are (3.5×10 4 ,7.5×10 4 ,6.5×10 3 ), (8.5×10 4 ,3.5×10 4 ,7.5×10 3 ) unit is m; Scenario 2, there are 4 distributed suppression jammers, two of which only interfere with radar 1, and the positions are (1.0×10 4 ,6.0×10 4 ,6.5×10 3 ), (8.5×10 4 ,3.5×10 4 ,7.5×10 3 ), the unit is m, the other two only interfere with radar 2, and the positions...

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Abstract

The invention discloses a method for distinguishing centralized and distributed blanketing jamming of a three-dimensional radar net based on cross anchor point association and belongs to the field of the anti-jamming technique of the radar net. The radar net is threatened by centralized blanketing jamming and distributed blanketing jamming greatly, and it is difficult to distinguish jamming types under the conditions of networking of two three-dimensional radars. In order to solve the problem, the method mainly comprises the following steps of (1) inputting measurement of an azimuth angle and a pitch angle of a jamming source of the networked three-dimensional radars into a data fusion center computer; (2) constructing an analytic equation of directional lines and azimuth planes; (3) solving for cross anchor points of each group of directional lines and azimuth planes; (4) performing association judgment on the cross anchor points; (5) distinguishing the jamming types. By means of the method, the problem that the centralized blanketing jamming and the distributed blanketing jamming are difficult to distinguish under the conditions of networking of two three-dimensional radars is solved. Furthermore, the method has the advantages of high correct distinguishment rate and good stability, can be applied to projects easily, and has high popularization and application value.

Description

1. Technical field [0001] The invention belongs to the technical field of radar network anti-jamming, and is suitable for identifying centralized or distributed suppressing interference when three-coordinate radar is networked. 2. Background technology [0002] With the increasingly fierce electronic countermeasures in modern warfare, the living environment of radars has become very harsh. Compared with single radars, radar nets have stronger "four resistance capabilities". Various jamming technologies, among which centralized suppressing jamming and distributed suppressing jamming are two types of jamming that are more commonly used and pose a greater threat to the radar network. Since the mechanism and effect of the two kinds of jamming are different, the anti-jamming measures adopted will vary. In view of this, it is necessary to distinguish between these two types of interference. The current typical identification method is "distributed interference identification meth...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/36
CPCG01S7/36
Inventor 王国宏孙殿星吴巍谭顺成于洪波
Owner NAVAL AVIATION UNIV
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