Method for estimating angle range of incoming wave direction of intrusion signals based on phase difference

A technology of angle range and direction of arrival, which is applied in the field of angle range estimation of direction of arrival of intrusion signals based on phase difference data, can solve problems such as complicated calculation process, and achieve simple antenna structure, small amount of calculation, high degree of authenticity and reliability Faithful effect

Active Publication Date: 2019-08-09
BEIHANG UNIV
View PDF13 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the processing of this algorithm, the target is positioned by using the signal’s angle of arrival, time delay and Doppler frequency shift information, and the velocity vector is calculated by using the Doppler frequency shift of the reflected signal of the moving target, and the stationary target is sorted out and removal, the calculation process is complex

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 angle range of incoming wave direction of intrusion signals based on phase difference
  • Method for estimating angle range of incoming wave direction of intrusion signals based on phase difference
  • Method for estimating angle range of incoming wave direction of intrusion signals based on phase difference

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] The specific implementation method of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0025] The present invention is a method for estimating the angular range of the direction of arrival of an intrusion signal based on a phase difference. The overall flow chart is as follows figure 1 As shown, the present invention realizes the statistics of the relationship function of angle error in different areas and the change of SNR, and uses the spectrum analysis method to quickly and accurately estimate the SNR of the intrusion signal. Specifically include the following steps:

[0026] The first step is to use the UAV airborne antenna to measure the phase difference data of the intrusion signal, and calculate the estimated value of the angle of the incoming wave direction of the intrusion signal relative to the UAV based on the phase difference data.

[0027] The UAV airborne antenna is a two-dimensional single-baseline ...

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 angle range of the incoming wave direction of intrusion signals based on the phase difference, and belongs to the technical field of signal detection. The method for estimating comprises the steps that the intrusion signals in the airspace are identified to obtain an angle estimation value, an angle error function is established, the signal-to-noise ratio of the intrusion signals is estimated, the angle range of an unknown radiation source relative to an unmanned aerial vehicle is calculated by using phase difference data and the signal-to-noise ratio of incoming signals, and thus the orientation function in the airspace is realized. According to the method for estimating the angle range of the incoming wave direction of intrusion signalsbased on the phase difference, the antenna structure is simple, the calculation amount is small, and the precision is high; and the angle error with the signal-to-noise ratio change function is obtained according to a large amount of statistical data, and high authenticity and credibility are achieved.

Description

technical field [0001] The invention belongs to the technical field of signal detection, and specifically refers to a method for estimating the angular range of the direction of arrival of an intrusion signal based on phase difference data. Background technique [0002] The unmanned system data link undertakes the important tasks of unmanned system command and control and information transmission, and is an important part of the unmanned system. In the military, it can be used for aerial reconnaissance, electronic jamming, communication relay, target positioning, battlefield surveillance and border patrol, etc. In civilian use, it can be used for aerial photography, disaster monitoring, geophysical prospecting, aerial photography, etc. In recent years, with the gradual improvement of unmanned systems, the application of unmanned systems has gradually shown explosive growth and put forward higher requirements for the safety, reliability and adaptability of unmanned system dat...

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
Patent Type & Authority Applications(China)
IPC IPC(8): G01S3/00
CPCG01S3/00
Inventor 刘春辉孙宇航丁文锐
Owner BEIHANG 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