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

A terahertz video SAR real-time processing system

A real-time processing, ARM processor technology, applied in radio wave measurement systems, instruments, measurement devices, etc., can solve problems such as insufficient processing speed of terahertz SAR echo signals, and achieve enhanced scalability, improved system resources, and reduced Small volume effect

Active Publication Date: 2022-04-22
UNIV OF ELECTRONICS SCI & TECH OF CHINA
View PDF12 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to address the problem and provide a terahertz video SAR real-time processing system that is independent of the radar transceiver and has mass production, miniaturization, low cost, strong scalability and high real-time performance, so as to solve the problem of Insufficient processing speed of terahertz SAR echo signal, and provide interfaces for subsequent transplantation of other imaging algorithms, and provide technical support for the improvement of terahertz video SAR 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
  • A terahertz video SAR real-time processing system
  • A terahertz video SAR real-time processing system
  • A terahertz video SAR real-time processing system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] Below in conjunction with accompanying drawing, describe technical scheme of the present invention in detail:

[0031] The terahertz video SAR real-time processing system of the present invention is aimed at the imaging processing of SAR echo data. The functions of the system are perfect and the imaging delay is low. Its main structure is as follows: figure 1 As shown, the digital radar receiver buffers the SAR echo data and inertial navigation information into the pre-planned corresponding DDR buffer area through the network receiving module, and sends the original echo data into the interpolation after the buffering of a frame of image data The matrix mapping module completes the beam domain correction process in the PFA algorithm, and then reads the corrected data to the FPGA through the DMA to complete the big and small endian conversion of the data and the Fourier transform of the distance upward, and then writes it back to the DDR through the DMA. The ARM side rea...

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 belongs to the technical field of signal acquisition and processing, and in particular relates to a terahertz video SAR real-time processing system. The system proposed by the present invention is composed of ARM+FPGA, wherein the ARM and the FPGA are connected through the AXI bus, and the ARM performs data interaction with the SAR receiver through the lwip protocol, and the processing of the data by the ARM includes: Perform interpolation matrix mapping on the received SAR image, perform transposition and amplitude normalization, transposition and two-dimensional FFTshift on the data sent by the received FPGA data processing module, and the FPGA quantity processing module processes the data Including: performing range FFT, azimuth FFT, complex signal modulo, pseudo-color conversion, and video stream conversion on data. The present invention implements a terahertz video SAR real-time processing system by using a highly integrated FPGA+ARM platform, completes three major functions of data receiving, data processing, and data display, and can reduce system development costs while reducing system volume and function. consumption.

Description

technical field [0001] The invention belongs to the technical field of signal acquisition and processing, and in particular relates to a terahertz video SAR real-time processing system. Background technique [0002] With the continuous improvement of terahertz SAR technology, due to its small accumulation time, it can keep the signal acquisition time at a low level. Because of this, if the data processing capability of the imaging system can be further improved, Guaranteeing a timely refresh capability of received data, terahertz SAR can become a new type of human eyeball, accomplishing some unexpected functions. However, since terahertz SAR technology has just started, most SAR imaging systems at home and abroad are based on low-frequency band systems with large data volume and high data delay. The system structure is mainly designed to improve the parallelism of imaging algorithms, not around Considering the word "real-time", some systems integrate the imaging system with...

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): G01S13/90G01S7/41
CPCG01S13/904G01S7/418
Inventor 皮亦鸣杨晓波郑云伟李晋闵锐曹宗杰崔宗勇
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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