Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for simulating composite hole diameter radar image of three-dimensional complex object

A technology of synthetic aperture radar and complex targets, which is applied in the direction of radio wave reflection/re-radiation, utilization of re-radiation, measurement devices, etc., can solve the problems of insufficient experimental template data, etc., and achieve high calculation accuracy, high resolution, and calculation efficiency Improved effect

Active Publication Date: 2012-11-14
INST OF ELECTRONICS CHINESE ACAD OF SCI
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a synthetic aperture radar image simulation method of a three-dimensional complex target, which simulates its high-resolution full-polarization SAR image based on a three-dimensional complex target model, and solves the problem of insufficient experimental template data in ATR research

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 simulating composite hole diameter radar image of three-dimensional complex object
  • Method for simulating composite hole diameter radar image of three-dimensional complex object
  • Method for simulating composite hole diameter radar image of three-dimensional complex object

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0045] A synthetic aperture radar image simulation method for a three-dimensional complex target of the present invention comprises the following six specific steps:

[0046] Step 1: Read in the triangular surface element model of the 3D complex target, and emit a cluster of rays from the equiphase plane to simulate the incident plane electromagnetic wave, if the incident reference point is p ref , the incident direction vector is The incident parameter variable is t, then each incident ray r 1 Can be expressed as:

[0047] r 1 = p ref + s ^ * t - - - ( 1 )

[0048] Step 2: Use the z-buffer algorithm to complete a ray tracing of the incident electromagnetic wave. For the incident ray with one ejection, keep its reflection line, and for the inciden...

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 relates to a method for simulating composite hole diameter radar image of three-dimensional complex object, relating to composite hole diameter radar image technique using the method combined with popping ray method protocol and SAR simulating imaging technique. The method comprises the following steps: reading the triangular surface element model of three-dimensional object; operating the three-dimensional space distribution of completely polarized object dissipation coefficient using SBR arithmetic; operating the dissipation coefficient distribution of background clutter and shadow region using object model and SBR geometric parameter; projecting the object and background dissipation coefficients to the bevel plane; and obtaining completely polarized SAR image using SAR echo simulating and imaging arithmetic. The simulating method supplies an effective route for obtaining completely polarized military target SAR image with high resolution ratio, provides an enriched sample bank for researching SAR ATR, and has important meaning for improving the technical level of SAR ATR research.

Description

technical field [0001] The invention relates to the field of synthetic aperture radar (Synthetic Aperture Radar, SAR) image technology, which is a simulation of high-resolution full-polarization SAR images of three-dimensional complex targets using the principle of SBR (SBR) and synthetic aperture radar image simulation method. Background technique [0002] The bullet ray method (SBR Shooting and Bouncing Ray) was proposed by Hao Ling in 1989 and was originally used for the RCS calculation of the cavity. The bullet ray method calculates the RCS of the target by combining geometric optics (GO) and physical optics (PO). The single reflection contribution of the target to the electromagnetic wave is directly given by the PO integral, and the multiple reflections are obtained through multiple GO ray tracing and The final PO credits are given. Due to the consideration of the effect of multiple reflections, the SBR method can well simulate the multiple reflection effects of targ...

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): G01S13/90
Inventor 洪峻张锐明峰
Owner INST OF ELECTRONICS CHINESE ACAD OF SCI