Unlock instant, AI-driven research and patent intelligence for your innovation.

Optimal Method of Task Scheduling for Spaceborne Data Transmission System

A technology for onboard data transmission and task scheduling, which is applied in the field of data processing of aerospace onboard electronic systems, can solve problems such as low system efficiency and limited data processing scale, improve task scheduling control capabilities, and reduce reconfiguration Time overhead, the effect of increasing the scale of FPGA data processing

Active Publication Date: 2016-09-07
HARBIN INST OF TECH
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the existing task scheduling method is limited by the hardware resources of the device, there are problems of low system work efficiency and limited data processing scale, the on-board data transmission system and the task scheduling optimization of the on-board data transmission system are proposed method

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
  • Optimal Method of Task Scheduling for Spaceborne Data Transmission System
  • Optimal Method of Task Scheduling for Spaceborne Data Transmission System
  • Optimal Method of Task Scheduling for Spaceborne Data Transmission System

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0029] Specific implementation mode 1. Combination figure 1 Describe this embodiment in detail, the spaceborne digital transmission system described in this embodiment includes a high-resolution CCD camera 1, a large-capacity solid-state memory 2, a reconfigurable coprocessor 3, a modem 4 and a ground receiving station 5,

[0030] The image output end of the high-resolution CCD camera 1 is connected to the image input end of the large-capacity solid-state memory 2,

[0031] The image data output end of the large-capacity solid-state memory 2 is connected to the image data input end of the reconfigurable coprocessor 3,

[0032] The image data output end of the reconfigurable coprocessor 3 is connected to the image data input end of the modem 4,

[0033] The modem 4 transmits the image data to the ground receiving station 5 through the data transmission antenna.

[0034] The high-resolution CCD camera 1 described in this embodiment is the main payload of a remote sensing satel...

specific Embodiment approach 2

[0037] Embodiment 2. The difference between this embodiment and the on-board data transmission system described in Embodiment 1 is that the reconfigurable coprocessor 3 includes a processor chip 3-1, an FPGA chip 3-2 and a high-speed flash memory chip 3 -3,

[0038] The image data input end of the FPGA chip 3-2 is connected to the image data output end of the large-capacity solid-state memory 2,

[0039] The temporary data end of the FPGA chip 3-2 is connected to the temporary data end of the high-speed flash memory chip 3-3,

[0040] The image data control end of the FPGA chip 3-2 is connected to the image data control end of the processor chip 3-1,

[0041] The image data output end of the processor chip 3 - 1 is connected to the image data input end of the modem 4 .

[0042] The reconfigurable coprocessor 3 described in this embodiment has a strong parallel computing capability, combines the floating-point operation unit and the error detection and error correction module...

specific Embodiment approach 3

[0044] Embodiment 3. The difference between this embodiment and the on-board data transmission system described in Embodiment 2 is that the processor chip 3-1 adopts a chip model: TSC695.

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 satellite-borne data transmission system and a task scheduling and optimizing method thereof, and solves the problems that a system of an existing task scheduling method is low in work efficiency and limited in data processing size. The task scheduling and optimizing method thereof includes that an image output end of a high-resolution CCD (charge coupled device) camera is connected with an image input end of a large-capacity solid-state storage in the satellite-borne data transmission system, an image output end of the large-capacity solid-state storage is connected with an image data input end of a reconfigurable coprocessor, an image data output end of the reconfigurable coprocessor is connected with an image data input end of a modem, and the modem transmits image data to a ground receiving station through data transmission antennas. By the task scheduling and optimizing method, reconstruction time of FPGA (field programmable gate array) is reduced, work efficiency of the reconfigurable coprocessor is improved, so that good reconstruction time configuration optimization effect is achieved, and data processing scale of the FPGA is increased. The satellite-borne data transmission system and the task scheduling and optimizing method thereof are applicable to the fields of aerospace, aviation and satellite-borne electronic systems and the like.

Description

technical field [0001] The invention relates to an on-board digital transmission system and a task scheduling optimization method of the on-board digital transmission system, and belongs to the technical field of data processing of aerospace on-board electronic systems. Background technique [0002] High-resolution earth observation application satellites require powerful computing, data processing, and autonomous operation capabilities, and must be able to process large-scale image data (GB level) such as automatic cloud identification, image matching, and target recognition on-orbit. This puts high demands on the data processing capability of the on-board electronic system, and the computing power of traditional on-board computers (such as TS695, 3803, etc.) obviously cannot meet its requirements, and high-performance co-processing units need to be added. The FPGA-based reconfigurable coprocessor can parallelize the algorithm on the hardware, so that it can break through t...

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): G06F1/16G06F19/00
Inventor 邢雷刘源孙兆伟杨晶曹家铭叶东王峰
Owner HARBIN INST OF TECH