Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

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.

Pending Publication Date: 2021-06-04
XIDIAN UNIV
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the actual radar equipment is still difficult to achieve simultaneous full-polarization transmission, and cannot achieve clutter and interference suppression well.

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Transmitting and receiving combined polarization optimization method under time-sharing complete polarization radar system
  • Transmitting and receiving combined polarization optimization method under time-sharing complete polarization radar system
  • Transmitting and receiving combined polarization optimization method under time-sharing complete polarization radar system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] See figure 1 and figure 2 , figure 1 It is a flow chart of a joint polarization optimization method for transmission and reception under a time-sharing full-polarization radar system provided by an embodiment of the present invention, figure 2 It is a working principle diagram of the time-sharing full-polarization radar system provided by the embodiment of the present invention. An embodiment of the present invention provides a joint polarization optimization method for transmission and reception under the time-sharing full-polarization radar system, including:

[0053] Step 1. Obtain the prior polarization information of the radar target.

[0054] Specifically, the priori polarization information of the target includes: measured echo data of the first channel, measured echo data of the second channel, measured echo data of the third channel, and measured echo data of the fourth channel, wherein,

[0055] The measured echo data of the first channel is the measured e...

Embodiment 2

[0157] The effect of the present invention can be verified by the following simulation.

[0158] Simulation experiment parameters:

[0159] S1: Channel 0 launch, 489 meters (corner mirror), from far to near are trucks, corner mirrors and small houses, staring;

[0160] S2: Channel 1 launch, 489 meters (corner mirror), from far to near are trucks, corner mirrors and small houses, stare;

[0161] S5: channel 0 emission, 1058 meters, from far to near is transformer, angle inversion and staring;

[0162] S7: Channel 1 launch, 1058 meters, from far to near are transformers, angle inversion and staring, about 30m apart;

[0163] s1~s2: 1.2us;

[0164] s5, s7: 5us;

[0165] 1 channel is H channel emission;

[0166] 0 channel is V channel emission.

[0167] Therefore, read in S1, jc_pc_ns represents the cross-polarized pulse compression result of gaze mode, that is, VH, to_pc_ns represents the result of co-polarized pulse compression, that is, HH, and the meaning of S2 is simila...

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

PUM

No PUM Login to View More

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.

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

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

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01S7/02G01S7/36G01S7/41
CPCG01S7/023G01S7/024G01S7/36G01S7/414
Inventor 纠博王强郑浩
Owner XIDIAN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com