Transmitting and receiving combined polarization optimization method under time-sharing complete polarization radar system

A technology of transmitting, receiving and optimizing methods, which is applied in the field of radar, and can solve the problems that it is difficult to transmit with full polarization at the same time, and can not achieve clutter and interference suppression well.
CN112904280APending Publication Date: 2021-06-04XIDIAN UNIV
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Patent Information

Authority / Receiving Office
CN ยท China
Current Assignee / Owner
XIDIAN UNIV
Publication Date
2021-06-04

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Abstract

The invention discloses a transmitting and receiving combined polarization optimization method under a time-sharing complete polarization radar system. The method comprises the steps of obtaining a target Kennaugh polarization scattering matrix and a clutter Kennaugh polarization scattering matrix by using obtained target prior polarization information; constructing a transmitting-receiving combined polarization optimization model by using the target Kennaugh polarization scattering matrix and the clutter Kennaugh polarization scattering matrix; obtaining an optimal receiving polarization Jones vector and an optimal transmitting polarization Jones vector by using the receiving polarization Stokes vector and the transmitting polarization Stokes vector based on the transmitting-receiving combined polarization optimization model; according to the optimal transmitting polarization Jones vector, determining time-sharing transmitting horizontal polarization pulses and time-sharing transmitting vertical polarization pulses; and performing signal processing on the time-sharing transmitting horizontal polarization pulses and the time-sharing transmitting vertical polarization pulses in sequence by using the optimal receiving polarization Jones vector to obtain echo power. According to the optimization method, clutter and interference suppression is realized through a polarization optimization method and the like under a time-sharing complete polarization radar system.
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Description

technical field

[0001] The invention belongs to the technical field of radar, and in particular relates to a method for optimizing transmission and reception joint polarization under a time-sharing full-polarization radar system. Background technique

[0002] Radar is faced with the threat of two major types of jamming, namely suppressive jamming and deceptive jamming. Suppressive jamming is more common for deceptive jamming. It floods the target signal with noise and interferes with radar detection and parameter measurement. Radar needs to suppress the jamming through filtering and other measures to improve the dryness ratio in order to effectively counter the jamming.

[0003] Polarization filtering is a new technology to improve the anti-jamming ability of radar. It selects the polarization state of the transmitting or receiving antenna according to the difference between the polarization state of the radar target signal and the interference signal, so that the output sig...

Claims

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