Polarization suppression processing method for radar mainlobe interference

A technology of main lobe interference and processing method, which is applied in the processing of suppressing radar main lobe interference and the polarization suppression processing of interference signals, and can solve the problem that public materials for single-polarized antennas have not yet been found.
CN102495394AActive Publication Date: 2012-06-13NAT UNIV OF DEFENSE TECH
4 Cites 17 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
NAT UNIV OF DEFENSE TECH
Publication Date
2012-06-13

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention provides a polarization suppression processing method for radar mainlobe interference. The technical scheme is that: the method comprises the following five steps of: 1, constructing a function base relevant to a radar antenna polarization characteristic; 2, preprocessing an interference and target mixed signal; 3, performing orthogonal polarization decomposition processing on the interference and target mixed signal; 4, performing polarization filter vector estimation on the interference and target mixed signal; and 5, performing space domain multi-concave polarization filter on the interference and target mixed signal. A voltage matrix of the interference and target mixed signal is processed by using a least square algorithm, so that orthogonal polarization decomposition and estimation for the interference and target mixed signal are realized; and under the condition that a pitching angle cannot be acquired precisely, an interference signal is suppressed by using a space domain multi-concave virtual polarization filter. The polarization suppression processing method has no extra requirement on a hardware system, is easy to implement, and is high in engineering applicability.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the technical field of radar signal processing, and relates to a processing method for suppressing radar main lobe interference, in particular to a polarization suppression processing method for interference signals entering from the main lobe direction of a single-polarization and mechanical scanning radar antenna. Background technique

[0002] Existing radar anti-jamming methods mainly focus on processing echo signals in the time domain, frequency domain or air domain, while relatively little research has been done in the signal polarization domain. The polarization information of the radar signal reflects the inherent properties of the target. By making full use of the difference between the polarization information of the target and the interference, a very special anti-jamming effect can be achieved.

[0003] In recent years, with the gradual deepening of radar polarization theory research and the substantial improvement o...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More