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

Design method of low-interception frequency control array MIMO radar system based on ADMM under clutter

A design method and frequency-controlled array technology, applied in radio wave measurement systems, instruments, etc., can solve problems such as the inability to achieve energy control in a specific area, and the array pattern has nothing to do with distance.

Active Publication Date: 2020-06-30
HUBEI UNIV OF TECH
View PDF6 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing literature considering LPI takes the phased array as the research object, and uses the phased array to realize the space scanning of the beam, but the disadvantage of the phased array is that its array pattern has nothing to do with the distance, and it can only realize the orientation of the array signal and cannot realize the specific Zone Energy Control

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
  • Design method of low-interception frequency control array MIMO radar system based on ADMM under clutter
  • Design method of low-interception frequency control array MIMO radar system based on ADMM under clutter
  • Design method of low-interception frequency control array MIMO radar system based on ADMM under clutter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0066] The relevant theory and specific implementation process based on the implementation of the present invention will be described in detail below, so that the advantages and characteristics of the present invention can be more easily understood by those skilled in the art, so as to make the protection scope of the present invention clearer and clearer defined.

[0067] (1) Signal model construction

[0068] Consider the model of a narrowband frequency-steered array MIMO (FDA-MIMO) radar system whose array consists of M t transmit antennas and M r composed of receiving antennas, the signal x transmitted by the mth transmitting antenna at time t m (t) See formula (1), m=1,2,...,M t .

[0069]

[0070] In formula (1):

[0071] j represents the imaginary unit;

[0072] w m Represents the transmit waveform weighting vector of the mth transmit antenna;

[0073] 0≤t≤T n ,T n Indicates the radar pulse duration;

[0074] s(t)=[s 1 (t),s 2 (t),...,s K (t)] T , whic...

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 design method of a low-interception frequency control array MIMO radar transceiving system based on ADMM under clutter. The method comprises the following steps: S0, buildinga multi-proportion optimization problem, and initializing the number of outer loop iterations, the number of inner loop iterations and a transmitting beam matrix; S1, fixing a current transmitting beam matrix, and calculating a receiving filter by using an adaptive beam technology based on the multi-proportion optimization problem; S2, fixing the receiving filter under the iteration, and updatinga transmitting beam vector by using an alternating direction multiplier technology; S3, repeating steps S1 to S2 for loop iteration; and S4, designing the low-interception frequency control array MIMO radar system based on the final transmitting beam matrix and the receiving filter. Under the consideration of clutter, interference and noise environments and emission energy limitation on the antenna, the optimization problem is constructed into a multi-proportion fractional programming problem, and an emission signal is optimized by using a loop iteration technology. A null is formed on a target area, so that the maximum output SINR is realized while the interception probability of the radar is reduced.

Description

technical field [0001] The invention belongs to the technical field of array signal processing, and in particular relates to a design method of an ADMM-based low-interception frequency control array MIMO radar transceiver system under clutter, which is used to suppress clutter, interference and noise signals coherent with the signal, and detect targets at the same time Reduces the probability of radar being intercepted. Background technique [0002] In modern electronic countermeasures, the increasingly changeable and complex radar electromagnetic environment puts forward new requirements for low-interception technology. It is hoped that the radar system can adjust the parameters of the transmitter in real time according to changes in the target and the environment to achieve better low interception effect. Low probability of intercept (LPI) radar can detect targets while reducing the probability of being discovered by the enemy, and provide guarantee for the safety of rada...

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): G01S7/02G01S7/282
CPCG01S7/023G01S7/282
Inventor 巩朋成王兆彬谭海明邓薇朱鑫潮周顺李婕张正文丰励贺章擎
Owner HUBEI UNIV OF TECH
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