Method for estimating DOA and DOD of MIMO radar based on co-prime array

A DOA, array technology, applied in the field of communication, can solve the problem of a small number of identifiable sources, etc.

Active Publication Date: 2015-12-23
XIDIAN UNIV
View PDF5 Cites 45 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present invention proposes a method of using a coprime array as a signal transceiver array to estimate DOA and DOD values, which improves the accuracy of target reconnaissanc...

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
  • Method for estimating DOA and DOD of MIMO radar based on co-prime array
  • Method for estimating DOA and DOD of MIMO radar based on co-prime array
  • Method for estimating DOA and DOD of MIMO radar based on co-prime array

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0046] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0047] Refer to attached figure 1 , the concrete steps of the present invention are as follows.

[0048] Step 1, establish a coprime array model.

[0049] Use 2P+Q-1 antenna receivers to form a coprime array, where P and Q represent two coprime numbers, and their value range is Q>P≥2.

[0050] Treat each antenna receiver as an array element.

[0051] An electromagnetic signal is incident on a coprime array.

[0052] The specific steps of the method of constructing a coprime array model are as follows:

[0053] The construction coprime array model reference in the embodiment of the present invention figure 2 , use Q antenna receivers to form a linear array 1 with uniform array element spacing, use 2P-1 antenna receivers to form a linear array 2 with uniform array element spacing, the array element spacing of linear array 1 is Pd, and the array element sp...

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 method for estimating the DOA and DOD of an MIMO radar based on a co-prime array, and mainly solves problems in the prior art that an MIMO radar system is low in accuracy of target detection and is small in number of recognizable information sources. The method comprises the following steps: (1) building a co-prime array model; (2) obtaining array receiving data; (3) calculating an array receiving vector; (4) estimating a covariance matrix; (5) drawing an MUSIC power spectrum chart, and estimating DOA and DOD values. The method provided by the invention remarkably improves the accuracy of target detection and increases the number of recognizable information sources. The method can be used for the detection of passive positioning of an airplane, a ship or other moving objects through a radar.

Description

technical field [0001] The present invention belongs to the technical field of communication, and further relates to a multiple-input multiple-output (Multiple-Input Multiple-Output, MIMO) radar system based on a coprime array in the field of radar technology. DirectionofDeparture, DOD) joint estimation method. The invention realizes target reconnaissance and passive positioning of aircraft and ship moving targets through radar. Background technique [0002] The estimation of signal DOA and DOD is an important branch in the field of array signal processing. It refers to the use of antenna arrays to inductively receive spatial acoustic signals and electromagnetic signals, and then use modern signal processing methods to quickly and accurately estimate the direction of the signal source. It has important application value in radar, sonar, wireless communication and other fields. With the continuous advancement of science and technology, there are increasingly higher requirem...

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): G01S7/02
CPCG01S7/02
Inventor 蔡晶晶鲍丹武斌刘高高秦国栋李鹏苏瑶
Owner XIDIAN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap