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Real-time processing system for large-format remote sensing images used in spaceborne cameras

A remote sensing image, real-time processing technology, applied in the field of spaceborne remote sensing image processing, to achieve the effects of high integration, clear structure and short development cycle

Active Publication Date: 2020-04-17
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present invention provides a real-time processing system for large-frame remote sensing images used in spaceborne cameras, which solves the technical problem of real-time high-speed processing of large-frame remote sensing images

Method used

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  • Real-time processing system for large-format remote sensing images used in spaceborne cameras
  • Real-time processing system for large-format remote sensing images used in spaceborne cameras
  • Real-time processing system for large-format remote sensing images used in spaceborne cameras

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Embodiment 1

[0047] The invention provides a real-time processing system for a large-frame remote sensing image used for a spaceborne camera, figure 1 It is a structural block diagram of a large-format remote sensing image real-time processing system for a spaceborne camera provided in Embodiment 1 of the present invention. Such as figure 1 As shown, the large-format remote sensing image real-time processing system for spaceborne cameras uses ADSP-TS201 floating-point high-speed DSP as the processing core to form a parallel processing system combining tight coupling and loose coupling. The high-speed TLK2711 serial transceiver is selected To link with the spaceborne camera, combined with dual-port SRAM (DPSRAM) buffer to realize the input and output of real-time data. It includes: a data input / output module 10 , a control module 20 , a data processing module 30 and a storage module 40 . Among them, DSP is Digital Signal Processing, digital signal processor.

[0048] Described control mo...

Embodiment 2

[0062] Embodiment 2 of the present invention provides a real-time processing system for large-format remote sensing images used in spaceborne cameras, figure 2The working flow chart of the real-time processing system for large-format remote sensing images for spaceborne cameras provided by Embodiment 2 of the present invention. Such as figure 2 as shown,

[0063] First, the receiving end of the input terminal TLK2711 high-speed serial transceiver in the data input / output module 20 receives the image digital signal sent by the remote sensing image acquisition system (i.e., the satellite-borne camera), wherein the image digital signal is usually 4-way serial LVDS digital image signals, the input terminal TLK2711 high-speed serial transceiver converts 4-way serial LVDS digital image signals into 20-way parallel TTL digital image signals, and then takes the high 10bit effective data to obtain the image data to be processed, Send the image data to be processed to the input term...

Embodiment 3

[0069] Embodiment 3 of the present invention provides a real-time processing system for large-format remote sensing images used in spaceborne cameras, image 3 A structural block diagram of a large-format remote sensing image real-time processing system for a spaceborne camera provided by Embodiment 3 of the present invention. Such as image 3 As shown, the large-format remote sensing image real-time processing system includes: a data input / output module 10, a control module 20, a data processing module 30, a storage module 40 and a peripheral circuit module 50;

[0070] The peripheral circuit module 50 includes a power supply module 501 and a voltage monitoring module 502;

[0071] The data input / output module 10 , the control module 20 , the data processing module 30 and the storage module 40 are all connected to the power supply module 501 . The power supply module 501 includes a PTH05010W power module providing 1.2V voltage and an output current up to 15A, and a PTH05000...

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Abstract

The present invention discloses a large-frame remote sensing image real-time processing system for a spaceborne camera. The system hardware comprises a data input / output module, a control module, a data processing module and a storage module. The control module is connected with the data input / output module and the data processing module respectively, and the control module is mainly composed of aCPLD XC95288 and two dual-port SRAMs (DPSRAM); the data input / output module comprises two TLK2711 high-speed serial transceivers, and is connected with a spaceborne camera data interface; the data processing module mainly comprises four ADSP-TS201 digital signal processors (DSP); and the storage module comprises a data buffer composed of two SDRAMs and a program memory composed of a non-volatileflash. According to the system provided by the present invention, the real-time processing of the large-frame remote sensing image output by the spaceborne camera can be realized, and support can be provided for the miniaturization and embedded practical engineering application of the on-board image processing system.

Description

technical field [0001] The invention relates to the technical field of space-borne remote sensing image processing, and more particularly, to a real-time processing system for large-format remote sensing images used in space-borne cameras. Background technique [0002] With the continuous advancement of electronic science and sensor technology, on-board high-speed / real-time processing of large-format remote sensing images has gradually become a research and development direction in the field of aerospace remote sensing. The current on-board processing tasks mainly focus on image pre-processing, massive data processing, and target feature extraction. Due to the limitation of data transmission bandwidth between the satellite and the ground, large-format images generally need to be processed at a ratio of 3:1-8 before being transmitted back to the ground. Lossy compression with a compression ratio of :1, the decompressed image on the ground has a certain degree of distortion, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C11/04
CPCG01C11/04
Inventor 高昆李若娴王广平华梓铮焦建超豆泽阳苏云
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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