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

Motion Compensation and Imaging Processing Method of High Frequency Airborne FM Continuous Wave SAR

A FM continuous wave and motion compensation technology, which is used in radio wave measurement systems, radio wave reflection/re-radiation, instruments, etc. It can solve problems such as the inability to process FM continuous wave real-time echo data, and the lack of SAR motion compensation technology. , to achieve a good practical effect

Active Publication Date: 2019-10-18
SHANGHAI RADIO EQUIP RES INST
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

(3) SAR real-time imaging method based on FM continuous wave (CN102590812A), this invention mainly solves the problem that existing methods cannot process FM continuous wave real-time echo data
The above related patents mainly describe the SAR imaging motion compensation algorithm under the pulse system, and do not involve the SAR motion compensation technology under the high-frequency frequency modulation continuous wave system

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
  • Motion Compensation and Imaging Processing Method of High Frequency Airborne FM Continuous Wave SAR
  • Motion Compensation and Imaging Processing Method of High Frequency Airborne FM Continuous Wave SAR
  • Motion Compensation and Imaging Processing Method of High Frequency Airborne FM Continuous Wave SAR

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0038] refer tofigure 1 , figure 2 , the present invention improves the traditional range-Doppler imaging algorithm, compensates the intrapulse range movement, RVP and oblique term of FM CW, and further combines the imaging algorithm with FM CW SAR motion compensation to realize the unmanned Frequency modulation continuous wave SAR imaging method for machine platform.

[0039] The high-frequency airborne FM continuous wave SAR motion compensation and imaging processing method of the present invention comprises the following steps:

[0040] 1. Perform first-order line-of-sight motion compensation on the original data, that is, phase compensation relative to the centerline of the scene. Take the distance at the centerline of the scene as a reference to obtain the reference slope distance R ref The amount of motion error at , calculate the yaw error r of the SAR carrier platform in the line of sight direction (LOS) RI (t m , R ref ) and the corresponding phase error

[0...

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 provides a high-frequency airborne FM continuous wave SAR motion compensation and imaging processing method, which compensates for intra-pulse range migration, RVP and a slope item of FM continuous waves through improving the traditional range-Doppler imaging algorithm, further integrates the imaging algorithm with FM continuous wave SAR motion compensation, and implements an FM continuous wave SAR imaging method based on a UAV platform. The high-frequency airborne FM continuous wave SAR motion compensation and imaging processing method combines the actual aerial carrier flight condition, brings forward the motion compensation method suitable in a FM continuous wave mode, combines the motion compensation method with the improved imaging algorithm, and realizes FMCW SAR high resolution imaging in the case of aerial carrier motion error.

Description

technical field [0001] The invention relates to an airborne frequency modulation continuous wave SAR motion compensation and imaging method, which is suitable for a miniaturized SAR system adopting a frequency modulation continuous wave system. Background technique [0002] The highly miniaturized FMCW (Frequency Modulated Continuous Wave) SAR (Synthetic Aperture Radar) has a series of advantages such as simple structure, low price, low power consumption, and low probability of interception. It is very suitable for the rapidly developing and widely used small UAV platform. The high-frequency (Ka) SAR system has the characteristics of high resolution and similarity to the visible light representation of ground objects, and it is more and more used in civilian applications such as search and rescue, regional monitoring, disaster monitoring and control, and small UAVs for ground reconnaissance. and other military fields. [0003] At present, the UAV-borne high-frequency freque...

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 唐侃刘庆波王树文蔡昆周郁崔永香
Owner SHANGHAI RADIO EQUIP RES INST
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