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: 2013-03-06
UNIT 63892 OF PLA
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  • 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

Examples

Experimental program
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Effect test

Embodiment approach 1

[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 detector, and a radio frequency memory connected in sequence.

[0045] The third channel of the interference control module includes a 180-degree phase shifter, a power amplifier, and a polarization isolator connected in sequence; the fourth channel of the interference control module includes a 0-degree phase shifter, a power amplifier, and a polarization isolator connected in sequence device.

[0046] exist figure 1 In the schematic diagram of the composition of the jammer example 1 shown, there is a transceiver isolation device between the transmitting antenna and the receiving antenna of the jammer, which is made of metal mesh material, which can ensure that the receiving antenna does not receive the signal when the antenna transmits the signal. In this way, the receiving and tran...

Embodiment approach 2

[0051] The first channel and the second channel of the receiving module are two identical channels, and each channel is composed of a low-noise power amplifier, a wave detector, and a radio frequency memory connected in sequence. The third channel of the interference control module is composed of a 180° phase shifter, a power amplifier, and a polarization isolator connected in sequence. The fourth channel of the interference control module is composed of a 0-degree phase shifter, a power amplifier, and a polarization isolator connected in sequence.

[0052] exist Figure 4 In the composition diagram of example 2 of the jammer shown, it includes a common antenna for transmitting and receiving, a circulator, a first switch, a receiving module, a time division circuit, a second switch and a third switch, an excitation amplifier, and a jamming control module. Wherein, the common antenna for transmitting and receiving includes a first transmitting and receiving antenna and a secon...

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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 Applications(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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