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Adaptive cross-polarization active jamming method and device

An active interference and self-adaptive technology, applied in the direction of radio wave measurement systems, instruments, etc., can solve problems such as tracking error, limited scope of application, interference, etc., and achieve the effect of mature device level, simple equipment structure, and high interference efficiency

Inactive Publication Date: 2015-06-03
UNIT 63892 OF PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The passive interference for monopulse radar is mainly through chaff clouds or passive scatterers to form strong radar echoes in a short period of time, so that the radar tracks the difference between the energy of chaff clouds and the echo energy of real radar targets. The center of mass produces angular tracking errors, but the scope of application of this interference method is very limited, and the effective interference time is very short. It is difficult to form stable and effective interference for large land-based tracking radars
The active jamming for monopulse radar is mainly by setting two or more multiple interference sources, periodic or non-periodic on-off interference sources within the resolution angle of monopulse radar, so that the antenna pointing of monopulse tracking radar is located at Chasing back and forth between interference sources, causing tracking errors
However, the implementation of this kind of jamming requires multiple jammers to work together, the amount of equipment required is relatively large, the actual operation is difficult, the cost of implementation is high, and it is difficult to implement effectively

Method used

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  • Adaptive cross-polarization active jamming method and device
  • Adaptive cross-polarization active jamming method and device
  • Adaptive cross-polarization active jamming method and device

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Embodiment approach 1

[0043] Such as figure 1 , 2 , shown in 3, a kind of self-adaptive cross-polarized active interference device, comprises: receiving antenna, transmitting antenna, receiving module, interference control module, receiving antenna and transmitting antenna are all orthogonally polarized antennas; Described receiving antenna receives The horizontally polarized signal of the receiving module is input to the first channel of the receiving module, and the vertically polarized signal received by the receiving antenna is input to the second channel of the receiving module; the first channel of the receiving module is output to the third channel of the interference control module, and the receiving module's The second channel is output to the fourth channel of the disturbance control module.

[0044] The structure of the first channel of the receiving module is the same as that of the second channel of the receiving module, and each channel includes a low-noise power amplifier, a wave de...

Embodiment approach 2

[0050] Such as Figure 4 , 5 , shown in 6, 7, a kind of self-adaptive cross-polarized active jamming device, comprises: the transceiving antenna of orthogonal polarization, circulator, receiving module, time separation circuit, excitation amplifier, interference control module, described transceiving antenna It is connected with the circulator, and the output end of the circulator is connected to the input end of the receiving module through the first switch; the receiving module is provided with two output devices, and one output device is to output the trigger signal when the input end of the receiving module receives the signal. Separation circuit; the time separation circuit includes three outputs, which are respectively output to the first switch, the second switch and the third switch; the other output device is that when the input terminal of the receiving module receives a signal, it passes through two completely identical first switches. The first channel and the sec...

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Abstract

The invention relates to the technical field of radar jamming, and discloses an adaptive cross-polarization active jamming method and device. The device comprises a receiving antenna, a transmitting antenna, a receiving module and a jamming control module, wherein the receiving antenna which is used for receiving horizontal or vertical polarized signals is connected with the jamming control module through the receiving module; the output end of the jamming control module is connected with the transmitting antenna which is used for transmitting horizontal or vertical polarized signals; and a receiving-transmitting isolation device is arranged between the receiving antenna and the transmitting antenna. According to the jamming device, the jamming effect generated when a plurality of jammers work at the same time can be achieved by one jammer without measuring pulse description words (PDW) of a radar signal or the polarized state of the radar signal and without adopting a plurality of jammers to run at the same time, and cross-polarization jamming can be generated adaptively, so that a stable and effective jamming effect can be achieved, the angle measurement accuracy of a monopulse radar can be greatly reduced, and the cost for development and maintenance can be greatly reduced.

Description

technical field [0001] The invention relates to the technical field of radar jamming, in particular to an adaptive cross-polarization active jamming method and device for monopulse tracking radar. Background technique [0002] At present, the existing jamming methods for monopulse tracking radar are mainly divided into active jamming and passive jamming. The passive interference for monopulse radar is mainly through chaff clouds or passive scatterers to form strong radar echoes in a short period of time, so that the radar tracks the difference between the energy of chaff clouds and the echo energy of real radar targets. The center of mass produces angular tracking errors, but the scope of application of this interference method is very limited, and the effective interference time is very short. It is difficult to form stable and effective interference for large land-based tracking radars. The active jamming for monopulse radar is mainly by setting two or more multiple inter...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/38
Inventor 戴幻尧汪连栋曾勇虎申绪涧李金梁陆俊李林郝晓军冯润明李永成
Owner UNIT 63892 OF PLA
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