Cross-eye interference confrontation method based on inverse monopulse

An anti-interference and cross-eye technology, applied to radio wave measurement systems, instruments, etc., can solve problems such as tracking angle error data deviating from the target angular position, and abnormal power ratio between the sum signal and the differential signal.

Active Publication Date: 2020-07-07
SHANGHAI RADIO EQUIP RES INST
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Problems solved by technology

[0002] "Cross-eye" interference is to use the interfering echo signals released by the two channels, so that the echo signal is almost zero after being superimposed in the sum channel, and enhanced after being superimposed in the differential channel, so that the sum channel required for angle measurement The power ratio of the signal to the differential signal is abnormal, which eventually causes the tracking angle error data output by the single pulse amplitude ratio angle measurement to deviate from the target angular position

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  • Cross-eye interference confrontation method based on inverse monopulse
  • Cross-eye interference confrontation method based on inverse monopulse
  • Cross-eye interference confrontation method based on inverse monopulse

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[0030] The following is attached Figure 1~3 and Specific Embodiments A cross-eye interference countermeasure method based on an inverse monopulse proposed by the present invention will be further described in detail. The advantages and features of the present invention will become clearer from the following description. It should be noted that the drawings are in a very simplified form and all use imprecise scales, which are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention. In order to make the objects, features and advantages of the present invention more comprehensible, please refer to the accompanying drawings. It should be noted that the structures, proportions, sizes, etc. shown in the drawings attached to this specification are only used to match the content disclosed in the specification, for those who are familiar with this technology to understand and read, and are not used to limit the implementation of...

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Abstract

The invention discloses a cross-eye interference countermeasure method based on inverse monopulse, which is applied to a sum-difference three-channel radar and comprises the steps of S1, entering an anti-cross-eye interference mode; S2, exchanging a sum path signal and a difference path signal in a sum-difference monopulse angle measurement formula to obtain a sum path signal and a difference pathsignal under the condition of cross-eye interference; S3, obtaining the ratio of the difference path signal to the sum path signal under the condition of cross-eye interference, and obtaining a tracking error angle according to the ratio; and S4, tracking in a cross-eye mode. The method provided by the invention can be implemented in a sum-difference three-channel radar system, so that a seeker of the sum-difference three-channel radar can continue to track the angle accurately after being interfered by the 'cross eye'. The anti-cross-eye interference capability of the seeker of the sum-difference three-channel radar is improved. The purposes of accurate tracking and angle measurement after the seeker of the sum-difference three-channel radar is interfered by the cross eye is achieved.

Description

technical field [0001] The invention relates to the technical field of radar electronic countermeasures, in particular to a cross-eye interference countermeasure method based on an inverse monopulse. Background technique [0002] "Cross-eye" interference is to use the interfering echo signals released by the two channels, so that the echo signal is almost zero after being superimposed in the sum channel, and strengthened after superimposing in the differential channel, so that the sum channel required for angle measurement The power ratio of the signal to the differential signal is abnormal, which eventually causes the tracking angle error data output by the single pulse amplitude ratio angle measurement to deviate from the target angular position. [0003] Therefore, a cross-eye interference countermeasure method based on inverse monopulse is proposed to solve the problem of how to carry out precise tracking and angle measurement methods for the sum-difference three-channel...

Claims

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Application Information

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IPC IPC(8): G01S7/36
CPCG01S7/36
Inventor 李毓琦牟成虎陈铖夏礼诺李兴岐封淑青牟旭娜
Owner SHANGHAI RADIO EQUIP RES INST
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