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Real-time image processing transpose memory in synthetic aperture radar

A synthetic aperture radar, real-time imaging technology, applied in the direction of instruments, measuring devices, radio wave reflection/re-radiation, etc.

Inactive Publication Date: 2006-12-13
INST OF ELECTRONICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But when the amount of data is large, it is necessary to control the off-chip memory through the controller to realize the storage transposition function

Method used

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  • Real-time image processing transpose memory in synthetic aperture radar
  • Real-time image processing transpose memory in synthetic aperture radar
  • Real-time image processing transpose memory in synthetic aperture radar

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Experimental program
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Embodiment Construction

[0038] The content of the present invention will be described in detail below.

[0039] Synthetic aperture radar real-time imaging processing is a matched filter for continuous two-dimensional echo digital signals. After certain processing, this two-dimensional matched filter can be decomposed into two one-dimensional processing cascades, two one-dimensional processing cascades Schematic diagram of synthetic aperture radar (SAR) imaging figure 1 As shown, the two one-dimensional matched filtering processes are called distance compression and azimuth compression respectively. The distance compression realizes the matched filtering of the echo data in the distance direction (longitudinal direction), and its output data flow is along the distance direction. The azimuth compression realizes the matched filtering of the echo data in the azimuth direction (horizontal direction). The azimuth compression requires the input data to be arranged along the azimuth direction and There is ...

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Abstract

Disclosed is a synthetic aperture laser real-time imaging processing converting storage device which comprises 2~3 main memory, wherein the general bus is connected with the output of the input channel switching module and the input of the output channel switching module; the input channel switching module is connected with the input interface, and the output channel switching module is connected with the output interface; a control module which is connected with the main storage device, the input interface and the output interface; a power module for providing power to all the components in the storage device; the 2~3 main storage devices employs SDRAM for storing 2~3 pages data; the control module, input channel switching module and the output switching module are realized by FPGA, wherein the control module reads and writes on the storage device and provides write address to the main storage device; performing matrix transposition.

Description

technical field [0001] The invention relates to a transpose memory (Corner Turning Memory, CTM), which is applied in the field of microwave remote sensing, especially in the field of synthetic aperture radar (Synthetic Aperture Radar, SAR) imaging. After distance compression, the output data is stored and transposed so that the data format meets the needs of azimuth compression. Background technique [0002] The transposition memory system involved in the present invention performs a generalized signal processing function, it does not change the size of the input data, and the output order of the data changes when the data passes through the system, to be exact, it realizes the matrix transposition function. This transposition memory system is mainly composed of a controller and a memory. The controller is realized by Xilinx FPGA, the storage device is SDRAM, and the matrix transposition of the data flow is realized through the read and write control of the FPGA to the SDRAM...

Claims

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Application Information

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IPC IPC(8): G01S7/02G01S13/90
Inventor 李早社禹卫东
Owner INST OF ELECTRONICS CHINESE ACAD OF SCI
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