A space-time broadband adaptive monopulse angle measurement method without pre-delay processing

A single-pulse angle measurement, self-adaptive technology, applied in radio wave measurement systems, instruments, etc., can solve problems such as poor single-pulse angle measurement effect, and achieve the effect of small signal-to-noise ratio and small calculation amount

Active Publication Date: 2021-08-06
UNIV OF ELECTRONICS SCI & TECH OF CHINA
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0040] Aiming at the technical problem that the monopulse angle measurement effect based on space-frequency processing is not good under low signal-to-noise ratio in the presence of interference in a broadband signal environment, the present invention proposes a space-time broadband adaptive monopulse based on no pre-delay processing. Pulse Angle Measurement Method

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
  • A space-time broadband adaptive monopulse angle measurement method without pre-delay processing
  • A space-time broadband adaptive monopulse angle measurement method without pre-delay processing
  • A space-time broadband adaptive monopulse angle measurement method without pre-delay processing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0066] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the implementation methods and accompanying drawings.

[0067] see image 3 , the concrete realization process of the inventive method is as follows:

[0068] 1. Calculate the space-time autocorrelation matrix of the received interference signal under the physically uniform linear array.

[0069] Using Kr to represent the incident number of interference signals, the interference signal model received by M uniform line arrays is

[0070] z(n)=As(n)+v(n),n=1,2,...,N (16)

[0071] Among them, N is the number of snapshots, and v(n) is an independent and identically distributed additive Gaussian white noise vector. The interference signal vector s(n) and the direction matrix A are defined as

[0072] s(n)=[s 1 (n),s 2 (n),...,s Kr (n)] T ∈C Kr×1 (17)

[0073] A=[a(θ 1 ), a(θ 2 ),…,a(...

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 space-time broadband adaptive monopulse angle measurement method based on no pre-delay processing, including: calculating the space-time autocorrelation matrix of received interference signals under a physically uniform line array; using the space-time autocorrelation matrix without pre-delay The adaptive beamforming method calculates the sum beam weight vector; corrects the sum beam weight vector to obtain the difference beam weight vector; performs sum and difference ratio processing on each sample to obtain the sum and difference ratio of each sample: calculate the sum and difference ratio The signal deviation angle is obtained by the average calculation, and the single pulse angle measurement angle is obtained by adding the signal deviation angle and the beam pointing angle. The invention is used for broadband self-adaptive monopulse angle measurement, can effectively suppress broadband interference and simultaneously perform monopulse angle measurement, and can still perform effective monopulse angle measurement in the presence of main lobe interference and low signal-to-noise ratio; Compared with the traditional space-frequency processing method, it has the advantages of small required signal-to-noise ratio, small amount of calculation, and no need for signal detection for each frequency band.

Description

technical field [0001] The invention relates to a monopulse angle measurement technology in the field of array signal processing, in particular to realize wideband self-adaptive monopulse angle measurement by adopting a space-time processing method based on no pre-delay for wideband monopulse. Background technique [0002] Monopulse angle measurement is a commonly used angle measurement method in radar. It uses multiple antennas to receive echo signals at the same time, and obtains the angle position information of the target by comparing the amplitude or phase of the echo signals. The single-pulse angle measurement method only needs one echo pulse to determine the angle error information of the target. It is simple to operate, strong in real-time performance, and high in angle measurement accuracy. Therefore, it is widely used in modern phased array radar systems. Sonar, wireless communication and other fields have important application value. [0003] According to the met...

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 Patents(China)
IPC IPC(8): G01S7/28G01S7/40
CPCG01S7/28G01S7/4052
Inventor 李会勇谢明陈敲月胡君丽谢菊兰
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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