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Interference condition-based dual polarization monopulse radar object angle estimating method

A single-pulse radar, target angle technology, applied in the direction of reflection/re-radiation of radio waves, use of re-radiation, measurement devices, etc. Ease of engineering implementation, the effect of eliminating coupling errors

Active Publication Date: 2017-07-21
UNIT 63892 OF PLA
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  • Application Information

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Problems solved by technology

However, due to the existence of residual interference signals after filtering, there is always a certain deviation in the angle measurement value. In addition, filtering may reduce the signal-to-noise ratio and have a negative impact on subsequent detection.

Method used

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  • Interference condition-based dual polarization monopulse radar object angle estimating method
  • Interference condition-based dual polarization monopulse radar object angle estimating method
  • Interference condition-based dual polarization monopulse radar object angle estimating method

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Embodiment Construction

[0062] The present invention can be explained in detail through the following examples, and the purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention.

[0063] combined with Figure 1-12 The method for estimating the target angle of a dual-polarization monopulse radar under interference conditions specifically includes the following steps:

[0064] (1), change the monopulse radar to single polarization transmission, dual polarization reception working mode:

[0065] Change the radar receiving antenna to dual-polarization reception and increase the corresponding sum-difference network and receiving channel to form a dual-polarization monopulse radar. The dual-polarization reception works in that each output of the four quadrants of the antenna is a bipolar Each output includes horizontal polarization and vertical polarization, each quadrant has two outputs, and there are 8 output signals in four quadrants...

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Abstract

An interference condition-based dual polarization monopulse radar object angle estimating method is disclosed and relates to the technical field of radar electronic countermeasures. A radar receiving antenna is transformed into a double polarization reception antenna, corresponding sum-difference networks and receiving channels are added, and a dual polarization monopulse radar device is formed; according to three channel sum, azimuth difference and pitching difference output data of horizontal polarization of the radar device as well as three channel sum, azimuth difference and pitching difference output data of vertical polarization, polarization characteristics of compound jamming can be estimated, a polarization ratio of interference can be substituted into a mathematical formula which then can be solved, errors of coupling between the interference signals and an object angle can be eliminated, and a real object angle can be estimated; the invention provides a simple and effective main lobe compound jamming resisting method which is easy to implement in the engineering field; the method disclosed in the invention can be applied to conventional object indication radar devices, tracking and guiding radar devices, terminal guiding radar devices and fire control radar devices and is of great practical significance.

Description

technical field [0001] The invention relates to the technical field of radar electronic countermeasures, in particular to a method for estimating the target angle of a dual-polarization monopulse radar under interference conditions. Background technique [0002] It is well known that monopulse radar angle measurement is a relatively mature technology and is widely used in high-precision tracking radar systems. However, when there are similar and different targets and noise suppression interference sources in the main beam of the radar, the target echo will be overwhelmed by the interference with a certain bandwidth in the time and frequency domains. After conventional signal processing, the monopulse radar cannot Effective detection of targets, or false detection and tracking of interference sources, the output of single-pulse angle measurement is the weighted average of physical space targets and interference, which cannot give correct angle indications, thereby destroying ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/36G01S13/88
CPCG01S7/36G01S13/88
Inventor 王建路戴幻尧孔德培许雄周波乔会东刘文钊张杨
Owner UNIT 63892 OF PLA
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