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

Ground accelerating moving target imaging method based on quadratic fit range equation

A distance equation, quadratic fitting technology, applied in the field of radar, can solve problems such as failure to propose and large amount of calculation

Inactive Publication Date: 2014-08-13
XIDIAN UNIV
View PDF5 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the first time, J. Sharma from Canada studied the influence of target acceleration on the performance of target motion parameter estimation in SAR-GMTI system through theoretical analysis and practical experiments, but failed to propose a ground acceleration moving target imaging technology
At present, Yang proposed an imaging method for ground-accelerated moving targets, which uses hough transform technology and partial Fourier transform technology. Applications

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
  • Ground accelerating moving target imaging method based on quadratic fit range equation
  • Ground accelerating moving target imaging method based on quadratic fit range equation
  • Ground accelerating moving target imaging method based on quadratic fit range equation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

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 belongs to the technical field of radar, and discloses a ground accelerating moving target imaging method based on a quadratic fit range equation. The method is used for imaging a ground accelerating moving target through synthetic aperture radar. The method includes the steps that (1) quadratic fit is carried out on a target range equation, (2) an original echo signal of the target is changed into a two-dimensional frequency domain, (3) according to the fitted secondary range equation, a range matching filter is built in the two-dimensional frequency domain and range compression and range cell migration correction are carried out, (4) the signal after range compression and range cell migration correction is changed into a range Doppler domain, (5) an azimuth matching filter is built in the range Doppler domain and direction compression is carried out, (6) azimuth inverse discrete fourier transform is carried out on the signal after direction compression, and imaging of the target is finished. Precise imaging of the ground accelerating moving target can be achieved without the need of knowing speed parameters, position parameters and the acceleration speed of the target, and calculation efficiency is high.

Description

technical field The invention belongs to the field of radar technology, in particular to a method for imaging ground accelerating moving targets based on a quadratic fitting distance equation, which is used for synthetic aperture radar (SAR) imaging of ground accelerating moving targets. Background technique Synthetic Aperture Radar (SAR) is an active system that uses electromagnetic waves in the microwave spectrum as a detection carrier to observe surface features. SAR has the characteristics of two-dimensional high-resolution, all-weather all-weather, strong penetrability, rich scattering information, multi-function and multi-purpose, so SAR imaging technology has become a hot research direction, and has been widely used in military and civilian applications. Applications. The spaceborne SAR ground moving target detection system (Synthetic Aperture Radar-Ground Moving Target Indication, SAR-GMTI) is the development of SAR technology. Ground moving targets, and the detec...

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): G01S13/90G06F19/00
CPCG01S13/9029
Inventor 王彤李永康鲁缘政任倩倩
Owner XIDIAN 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