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

Broadband transmitting adaptive beamforming method based on subband linear multi-constraint minimum variance criterion

An adaptive beam, minimum variance technology, applied in radio wave measurement systems, instruments, etc., can solve problems such as increased system load, increased computational load, and unfavorable engineering implementation, to improve system stability, facilitate engineering implementation, and reduce system costs. The effect of calculation

Active Publication Date: 2018-11-20
HOHAI UNIV
View PDF4 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the algorithm has some problems in the initial value setting of the conjugate iteration and the calculation of the iteration step is complicated, in order to obtain the optimal solution, multiple conjugate iterations are often required, which greatly increases the amount of calculation and increases the load of the system, which is not conducive to Project implementation

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
  • Broadband transmitting adaptive beamforming method based on subband linear multi-constraint minimum variance criterion
  • Broadband transmitting adaptive beamforming method based on subband linear multi-constraint minimum variance criterion
  • Broadband transmitting adaptive beamforming method based on subband linear multi-constraint minimum variance criterion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0072] The technical scheme of the present invention is described in detail below in conjunction with accompanying drawing:

[0073] A broadband transmit adaptive beamforming method based on the subband maximum SINR criterion, such as figure 1 As shown, it mainly includes the following steps:

[0074] Step 1: designing a broadband transmitting antenna array, and calculating the output signal of the broadband array. Signal x output by the mth array element m (n) satisfy the formula:

[0075]

[0076] Among them, x(n-k) refers to the output discrete signal x(n) shifting k units to the left, w m [k] refers to the weighted value of the kth tap of the mth array element, m=0,1,...,M-1, k=0,1,...,J-1, M is the total number of array elements, J is Tapped delay line coefficients.

[0077] Step 2, design sub-band filter banks, sub-band filter banks can be divided into analysis filter banks and synthesis filter banks, analysis filter banks are used for sub-band division of broadb...

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 broadband transmitting adaptive beamforming method based on a subband linear multi-constraint minimum variance criterion. The method includes steps of 1, designing a broadband transmitting antenna array and calculating output signals of a broadband array; 2, designing a subband filter bank; 3, utilizing an analysis filter bank in the subband filter bank to complete subband division of the broadband signals; 4, calculate an adaptive beamforming weight vector of each subband based on the subband linear multi-constrained minimum variance criterion; 5, performing reconstruction on the processed wideband signal by using a synthesis filter bank in the subband filter bank. Compared with the prior art, the method of the invention has a low calculation amount, can form a deeper null in a desired direction, has stronger interference suppression and more stable system performance, and is favorable for engineering realization.

Description

technical field [0001] The invention belongs to the field of array signal processing, and in particular relates to a broadband transmission adaptive beamforming method based on subband linear multi-constraint minimum variance criterion. Background technique [0002] Adaptive arrays deployed in modern radar systems often place nulls at the receiving end to attenuate interfering signals, such as hostile jamming, unintentional electromagnetic interference, or environmental clutter. The antennas of this scheme usually have a uniform amplitude on the aperture The transmission is weighted to maximize the main beam gain. This kind of signal processing technology at the radar receiving end has been perfected day by day, and it is becoming more and more difficult to improve the detection performance by optimizing the radar receiving signal processing algorithm. Therefore, more and more research institutions have recently developed methods for creating zero The benefit of this techni...

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 沈明威王冠李建峰张琪汪晨辉
Owner HOHAI 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