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

Circular array antenna real-time calibration method

A calibration method and antenna technology, applied to radio wave measurement systems, instruments, etc.

Inactive Publication Date: 2020-08-28
成都微联云智科技有限责任公司
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, phased array radar transceiver channel amplitude phase consistency error calibration is an unavoidable problem for every phased array radar

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
  • Circular array antenna real-time calibration method
  • Circular array antenna real-time calibration method
  • Circular array antenna real-time calibration method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described below are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0021] 1. Echo signal model

[0022] Using the given calibration reference signal, each signal to be calibrated is compared, the corresponding amplitude and phase data are given, and the calibration of the channel is realized through multiple iterations. Corresponding to the (m, n)th T / R component, the calibration signal coupled with the calibration coupling line is:

[0023]

[0024] Among them, in the formula: α is the signal amplitude; δ nm , is the unit-level independent amplitude and phase error; w nm and Φ nm is the weighting coefficient of amplitude and phase; C nm is the calibration coupling ratio; u s , v s is the inter-unit phase step...

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 circular array antenna real-time calibration method. The circular array antenna real-time calibration method comprises transmission calibration and receiption calibration ofa circular array antenna.

Description

technical field [0001] The invention relates to the technical field of radar antennas, in particular to a real-time calibration method for circular array antennas. Background technique [0002] Phased array radar has a large number of RF transceiver channels, and each transceiver channel has analog devices such as amplifiers, filters, mixers, etc. The existence of channel inconsistency will affect the quality of the beam after Digital Beam Forming (DBF) , especially has a great influence on the beam pointing, main lobe width, side lobe level and beam shape, and then affects the overall performance of the radar. Channel calibration obtains the amplitude and phase inconsistency between channels through testing, and compensates the channels to obtain a better beam pattern. Therefore, the calibration of amplitude-phase consistency error of phased-array radar transceiver channel is an unavoidable problem for every phased-array radar. [0003] The phased array radar antenna is c...

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): G01S7/40
CPCG01S7/4008G01S7/4021Y02A90/10
Inventor 刘思远赵树龙覃波武晓坤蔺庆潘喆莫新钱郑舒文廖正伟
Owner 成都微联云智科技有限责任公司
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