Method for evaluating simulation imaging of multi-mode synthetic aperture radar

A synthetic aperture radar, multi-mode technology, applied in the radar field, can solve problems such as the universal applicability of the SAR working mode, the high professional requirements of operators, and the cumbersome debugging process, so as to save the experiment time, reduce the difficulty of operation, The effect of simplifying the experimental process

Active Publication Date: 2010-12-08
XIDIAN UNIV
View PDF3 Cites 37 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantages of traditional computer simulation experiments are: the simulation method is more flexible, and the operator can modify the program at any time according to the needs; the disadvantage is: the program is highly targeted and does not have universal applicability to different SAR working modes. The debugging process is cumbersome, requiring a lot of time and manpower, and requires a high level of professionalism for operators, who are required to be very familiar with the SAR system and the simulation programs used

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 evaluating simulation imaging of multi-mode synthetic aperture radar
  • Method for evaluating simulation imaging of multi-mode synthetic aperture radar
  • Method for evaluating simulation imaging of multi-mode synthetic aperture radar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] refer to figure 1 , the implementation steps of the present invention are as follows:

[0035] Step 1: System environment settings.

[0036] refer to figure 2 , the specific implementation of this step is as follows:

[0037] (1a) Among the three operation modes of front and side view mode, squint mode and scanning mode, select one of them as the operation mode according to the system design requirements;

[0038] (1b) Input radar parameters, which include: pulse width T p , wavelength λ, transmitted signal bandwidth B, sampling frequency F s , pulse repetition period PRF, oblique angle θ, beam azimuth θ a , beam pitch angle θ r , scan start angle β 1 and scan end angle β 2 , Imaging time t;

[0039] (1c) Input carrier motion parameters, which include: carrier starting position coordinates and speed and acceleration along X, Y, Z three axes;

[0040] (1d) load the simulation scene;

[0041] (1e) setting simulation scene coordinates;

[0042] Step 2: Simulat...

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 evaluating the simulation imaging of a multi-mode SAR (Synthetic Aperture Radar), which mainly solves the problems of poor adaptability to different operating modes, complex experiment process and long experiment time in the prior art. The method comprises the following steps of: firstly, selecting an operating mode, inputting the parameters of a radar and the motion parameters of a carrier, loading a simulation scene and setting coordinates; secondly, setting a simulation radar echo signal according to a system environment; thirdly, imaging the radar echo signal to obtain a slant-range image; fourthly, geometrically correcting the slant-range image by using a three-dimensional geometric correction method to obtain a ground-range image; and finally, evaluating the quality of the ground-range image, and feeding back and correcting system parameters according the evaluation results so as to provide a feasible basis for a latter semi-physical simulation experiment. The method is applicable to three operating modes including a side looking mode, a slant looking mode and a scanning mode; only a plurality of parameters need to be input during operation, so that the experiment process can be simplified, the experiment time is saved, and the method can be used in a ground simulation experiment of SAR system design.

Description

Technical field: [0001] The invention belongs to the technical field of radar and relates to imaging simulation, in particular to a radar data simulation and imaging processing method based on VC6.0 platform. Background technique: [0002] Synthetic Aperture Radar (SAR) is a technology that uses radar echo signals to image targets. In the distance direction, a large signal bandwidth is used to obtain high resolution, and in the azimuth direction, a virtual synthetic aperture is used to obtain high resolution. After decades of development, SAR imaging technology has been gradually improved and has been widely used in practical systems. [0003] The carriers of SAR are usually in the form of satellites, aircraft and missiles. For the development of SAR system, the experiment for any kind of carrier is a large-scale project with high cost and complex operation, especially for some carriers such as missiles and satellites, their use is one-time, and the cost is very expensive ...

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): G01S7/40G01S13/90
Inventor 周鹏徐艺李亚超邢孟道
Owner XIDIAN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap