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

Interferometric SAR Image Simulation Method Based on Fractal Brownian Motion

A technology of fractal Brownian motion and simulation methods, applied in the direction of radio wave reflection/re-radiation, instruments, measuring devices, etc.

Active Publication Date: 2021-05-28
自然资源部国土卫星遥感应用中心
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

fBm is a purely mathematical model that can quantitatively characterize the statistical characteristics of the height in the azimuth and range directions during InSAR processing. The prior art has not used fBm in the interference image simulation process

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
  • Interferometric SAR Image Simulation Method Based on Fractal Brownian Motion
  • Interferometric SAR Image Simulation Method Based on Fractal Brownian Motion
  • Interferometric SAR Image Simulation Method Based on Fractal Brownian Motion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0099] The present invention will now be described in more detail, with reference to the above-mentioned drawings and illustrated using exemplary embodiments.

[0100] Aiming at the problems raised in the background technology, the present invention proposes an interferometric SAR image simulation method using fractal Brownian motion (fractional Brownian motion, fBm). This method uses the fractal Brownian motion model to determine the DEM, and uses the interference geometric parameters to obtain the image interference pair, which is very practical for image simulation.

[0101] The main purpose of the present invention is to use fractal Brownian motion (fractional Brownian motion, fBm) to simulate DEM data, and utilize interference geometric parameters to complete the simulation of interference images. The simulation results contain two interferable SAR images.

[0102] Such as figure 1 As shown, first, the present invention simulates the DEM at first. During the simulation ...

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 method for interferometric SAR image simulation based on fractal Brownian motion, which is characterized in that the method comprises the following steps: step S1, based on fractal Brownian motion (fBm) to simulate the external DEM of SAR image; step S2, using The external DEM of the SAR image simulated by S1 simulates the phase of the SAR image; Step S3, using the external DEM of the SAR image simulated in step S1 to simulate the amplitude of the SAR image; Step S4, based on the simulation of step S2. The phase of the SAR image and the amplitude of the SAR image obtained by simulation in step S3 are used to simulate the SAR image. The parameters used in the simulation process of the present invention have excellent engineering applicability, and can ensure that all error sources will not be too closely related to the interference geometry state, so that researchers can obtain more accurate error simulation conclusions based on the present invention.

Description

technical field [0001] The invention relates to the technical field of radar image processing, in particular to an interferometric SAR image simulation method based on fractal Brownian motion. Background technique [0002] Interferometric Synthetic Aperture Radar (InSAR) technology has become one of the most effective means of global mapping. At this stage, SRTM provides digital elevation model (DEM) data in the range of 56°S-60°N around the world, with a nominal accuracy of 16m and a grid size of 30m. It has played a role in global-scale scientific research and engineering applications immeasurable effect. In 2016, De Aerospace announced that it had completed the global DEM mapping. The accuracy of 90% of the area was 3.5 meters. If the Antarctic region was not considered, the accuracy of 90% of the world’s areas reached 1.3 meters. The data can already be used for fine militarization Positioning and military target identification. The huge potential of InSAR terrain sur...

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
CPCG01S13/9023
Inventor 李涛唐新明陈乾福高小明
Owner 自然资源部国土卫星遥感应用中心