FPGA space application radiation hardening method based on inspection self-healing

Abstract

The invention discloses an FPGA space application radiation hardening method based on inspection self-healing which is used in an FPGA space application system composed of an FPGA and a main control terminal connected with the FPGA. The method comprises the following steps: the main control terminal judges the state of a channel according to the channel state information, the method jumps to a step of unlocking processing if the channel is in an unlocked state, the method jumps to a step of constant-locking processing if the channel is in a constantly locked state, and the method jumps to a step of jump processing if the channel is in a jump state; and the main control terminal initiates an instruction to reload the FPGA, and the method returns to the step of channel state detection after loading is completed. By adopting the radiation hardening method of the invention, the phenomenon that any channel in FPGA space application is 'unlocked' due to a single event effect can be automatically removed, and an FPGA-based spread-spectrum transponder can run in a trouble-free manner for a long time under the influence of space radiation.

Description

technical field [0001] The invention belongs to the technical field of satellite communication hardware protection, in particular to an FPGA space application anti-radiation reinforcement method for inspection and self-healing. Background technique [0002] The data transmission, measurement and control, communication, signal processing and other payloads in the satellite hardware platform loaded on the satellite all use large-scale FPGA (Field-Programmable Gate Array, Field Programmable Gate Array). With the improvement of device integration, low-orbit satellite FPGA It is more and more affected by the space radiation effect. [0003] For example, satellite measurement and control is an important system to complete the monitoring and operation control of the entire satellite, and it must be safe and reliable to ensure that nothing goes wrong. Generally, the USB system is loaded as a backup, or the transponder is periodically reloaded through the ground system, so it is dif...

AI Technical Summary

Problems solved by technology

This method requires frequent human operations on the ground, is prone to misoperation, and has the hidden danger that the remote control module is affected by the single event effect and cannot respond to ground commands; as an improvement, another method is to reload the satellite through the satellite at regular intervals.

However, this method cannot ensure that the reloading time is not within the measurement and control arc, and when the reloading time is within the measurement and control arc, it will affect the normal measurement and control tasks; as a further improvement, another method is to reload the satellite on the basis of timing Added the judgment condition that the remote control is out of lock, but it can’t do anything about the fault caused by a single event that the remote control indicates that it is locked for a long time

[0005] Therefore, the problem existing in the prior art is: how to make the FPGA-based spread spectrum transponder run autonomously and trouble-free for a long time under the influence of space radiation

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