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

Data fusion based spaceborne distributed integrated aperture microwave radiometer system

A technology of microwave radiometer and synthetic aperture, applied in radio wave measurement system, radio wave reflection/re-radiation, utilization of re-radiation, etc., can solve heavy scanning platform system hardware structure and signal processing, limit spatial resolution, system Problems such as complex hardware structure and signal processing can be achieved to reduce complexity and engineering manufacturing difficulty, improve two-dimensional spatial resolution, and alleviate the high complexity of hardware system and signal processing.

Active Publication Date: 2018-11-27
XIAN INSTITUE OF SPACE RADIO TECH
View PDF2 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For large synthetic aperture microwave radiometers, due to the large number of antenna units and channel units, the system hardware structure and signal processing will be very complex, and the mass increase and antenna deformation brought by large array antennas restrict the performance of synthetic aperture microwave radiometers. scale, which in turn limits its further improvement in spatial resolution
[0007] To sum up, the spaceborne microwave radiometer system of the existing system is limited by factors such as large array antenna, heavy scanning platform or complex system hardware structure and signal processing to further improve the spatial resolution.

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
  • Data fusion based spaceborne distributed integrated aperture microwave radiometer system
  • Data fusion based spaceborne distributed integrated aperture microwave radiometer system
  • Data fusion based spaceborne distributed integrated aperture microwave radiometer system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0050] Taking the two-dimensional synthetic aperture microwave radiometer system as an example, assuming that the two-dimensional directions are X-axis (track direction) and Y-axis (cross-gauge direction), select the original grid of one of the synthetic aperture microwave radiometer subsystems as a reference . Through preliminary research, it can be known that if the original grid is to be equally spaced in the two-dimensional direction, the number of original grid divisions is just equal to the number of required synthetic aperture microwave radiometer subsystems. Such as figure 2 As shown, an example of grid division and data fusion when N=M=2 is given. At this time, the distributed synthetic aperture microwave radiometer system consists of four identical synthetic aperture microwave radiometer subsystems, named A, B, C, and D, respectively.

[0051] Among them, A is used as the basic reference unit, and B adjusts θ in the Y-axis direction (cross-track direction) on the ...

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

A data fusion based spaceborne distributed integrated aperture microwave radiometer system comprises a data fusion processing subsystem and at least N*M completely identical integrated aperture microwave radiometer subsystems, and N and M are decided by a ratio of the spatial resolution in the directions along and crossing the orbit of the whole system to the spatial resolution in the directions along and crossing the orbit of the data fusion processing subsystem; all the integrated aperture microwave radiometer subsystems are all arranged in the same orbit height, and projection grids of theintegrated aperture microwave radiometer subsystems in the ground are arranged and overlapped regualarlly; and each integrated aperture microwave radiometer subsystem obtains a brightness temperatureimage of the ground and records the brightness temperature image as an original brightness temperature image; and the data fusion processing subsystem determines a brightness temperature value of thewhole system in the projection grids, recorded as refined grids, of the ground in a data fusion manner according to original grid overlap relation of each integrated aperture microwave radiometer subsystem, namely, determines high-resolution brightness temperature data after data fusion. The high-resolution brightness temperature data is improved by N and M times in the directions along and crossing the orbit.

Description

technical field [0001] The invention relates to a space-borne distributed synthetic aperture microwave radiometer system based on data fusion, which belongs to the field of space microwave remote sensing technology. Background technique [0002] The microwave radiometer system is an important payload of spaceborne passive microwave remote sensing, which can mainly obtain important global physical parameters, such as soil moisture, ocean salinity, atmospheric temperature and humidity, etc. At present, microwave radiometer systems mainly include real aperture microwave radiometer system, phased array microwave radiometer system, synthetic aperture microwave radiometer system, etc. However, because the microwave radiometer system of the existing system is limited in obtaining high-spatial-resolution passive microwave remote sensing images, further improving the spatial resolution of space-borne passive microwave remote sensing has always been an important issue in passive micro...

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 Applications(China)
IPC IPC(8): G01S13/90
CPCG01S13/90G01S3/02
Inventor 卢海梁李一楠吕容川李浩王佳坤李鹏飞宋广南杨小娇
Owner XIAN INSTITUE OF SPACE RADIO 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