Check patentability & draft patents in minutes with Patsnap Eureka AI!

Radar resolution measuring method

A measurement method and resolution technology, applied in the field of remote sensing, can solve problems such as low efficiency, and achieve the effect of low processing complexity

Active Publication Date: 2020-03-31
HUBEI UNIV
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently used methods such as Tao Zeng, "Generalized approach to resolution analysis in BSAR", IEEE Transactions on Aerospace and Electronic Systems, 2005, Gao Xiang, "Resolution analysis of airborne 3-D SAR via generalized ambiguity function," International Asia-Pacific Conference on Synthetic Aperture Radar, 2011 requires a lot of calculations to obtain accurate results, which is inefficient

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
  • Radar resolution measuring method
  • Radar resolution measuring method
  • Radar resolution measuring method

Examples

Experimental program
Comparison scheme
Effect test

example

[0133] The simulation parameters are: the radar transmitter platform is placed on a satellite in geostationary orbit, the radar receiver moves on the surface of the earth, the inclination angle θ of the initial position of the radar receiver is 20 degrees, the moving speed v of the radar receiver is 30 m / s, The distance between the initial position of the radar receiver and the target point is 250 meters, and the vector of the target point is (250,0,0), the vector of the radar transmitter is (320,680,35800000). The total time of the radar movement is 30 seconds, and the imaging scene size is 100 meters × 40 meters.

[0134]Firstly, formula derivation is performed according to steps S1 to S6 to obtain the point spread signal. Combined with the simulation parameters, Matlab software is used to simulate the point spread signal and two-dimensional half-power ranging to obtain the resolution of the azimuth direction and the distance direction, as follows:

[0135] S71. Use mat...

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 radar resolution measuring method which comprises the following steps: S1, generating radar echo to obtain an echo signal; S2, performing two-dimensional Fourier transform on the echo signal to generate a two-dimensional frequency spectrum signal; S3, performing distance factor compensation on the two-dimensional frequency signal to obtain a distance factor compensationsignal; S4, performing distance and azimuth coupling factor compensation on the distance factor compensation signal to obtain a distance and azimuth coupling factor compensation signal; S5, performingazimuth factor compensation on the distance azimuth coupling factor compensation signal to obtain an azimuth factor compensation signal; S6, performing two-dimensional inverse Fourier transform on the azimuth factor compensation signal to obtain a point diffusion signal; and S7, carrying out two-dimensional half-power distance measurement on the point diffusion signal to obtain the resolution inthe azimuth direction and the distance direction. The method has the advantages of low algorithm processing complexity and high measurement precision.

Description

technical field [0001] The invention relates to a method for measuring radar resolution, in particular to a method for measuring the resolution of imaging satellites in imaging performance on the surface of the earth, and belongs to the field of remote sensing. Background technique [0002] Radar resolution refers to the minimum distance between different targets that the radar can distinguish. It shows the ability of the radar to detect target objects and is one of the important indicators of radar system performance. Therefore, how to obtain the resolution index in the process of radar system demonstration is very important for radar System construction is very important. [0003] Technical solutions related to existing resolution measurement methods such as "CN109212510A Method and Device for Measuring the Angular Resolution of Multi-Line Laser Radar" and "CN105683776A Angular Resolution in Radar" both measure the angular resolution of radar However, the angular resoluti...

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): G01S7/40
CPCG01S7/4052
Inventor 邢赛楠李雅婷
Owner HUBEI UNIV
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com