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A system-level anti-single event design evaluation method for spacecraft

A technology of anti-single particle and design method, applied in the aerospace field, can solve the problems of no software module, no single-particle flip simulation calculation in the computing system, and inability to reflect the design level of anti-single particle.

Active Publication Date: 2017-08-29
SHANGHAI SATELLITE ENG INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no report on the simulation calculation of single event flipping in the computing system, and there is no corresponding software module
Calculating the single event turnover rate of components can reflect the performance level of the device, but it cannot reflect the anti-single event design level of the system

Method used

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  • A system-level anti-single event design evaluation method for spacecraft
  • A system-level anti-single event design evaluation method for spacecraft
  • A system-level anti-single event design evaluation method for spacecraft

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Embodiment Construction

[0034] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0035] (1) System-level anti-single event design and evaluation method flow

[0036] The spacecraft system-level anti-single event design evaluation process includes 3 steps:

[0037] Step 1: Space radiation environment analysis: According to the orbital parameters and service life of the spacecraft, analyze the space radiation environment of the spacecraft in orbit;

[0038] Step 2: Acquisition of component flipping parameters: According to the ground test, the σ-LET curve of the component is ob...

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Abstract

The invention provides a design evaluation method of spacecraft system-level anti-single particles and relates to the evaluation methods of anti-single particle efficiency of a single machine or subsystem with large-scale integrated circuits. The method includes: calculating the transition frequency of electronic components through simulation; giving quantitative evaluation algorithms to the active and passive protection methods used by the spacecraft subsystem; evaluating the anti-single particle design of the spacecraft subsystem. In addition, the evaluation method can obtain the probability of discontinuous system operation. The evaluation method is applicable to simulation calculation of single particle transition frequency of a whole star or constellation after being popularized.

Description

technical field [0001] The invention relates to the field of aerospace, in particular to a single-event design and evaluation method for a spacecraft system. The system mainly refers to a stand-alone machine or system containing a large-scale integrated circuit. Background technique [0002] Since human beings entered the outer space, the influence of the state of the space environment and its changes on space activities has become an important issue of concern to people. Microelectronic devices with small size and low power consumption, especially large-scale integrated chips such as FPGAs, are more and more widely used in aerospace engineering. Galactic cosmic rays, solar cosmic rays, and high-energy charged particles in the Earth's radiation belt, especially the "single event" caused by heavy ions have become an important hidden danger in spaceflight. [0003] Single Event Upset (SEU) simulation calculation of components is a hot research topic at home and abroad in rece...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
Inventor 周飞陈占胜曹敏
Owner SHANGHAI SATELLITE ENG INST