A method of space radiation environment reliability prediction
- Posted by doEEEt Media Group
- On February 21, 2020
- 0
A method of space radiation environment reliability prediction
- Space radiation environment is an important failure causing factor in space vehicles.
2. Traditional reliability prediction method did not include the space radiation environment reliability..
3. It’s the time to set up a method of space radiation environment reliability prediction.
Space radiation environment effects
Main failure modes
Single Event Effect (SEE)
– SEE reliability prediction method
– SEE is an instantiate effect, only happens
during power on time of the sensitive
devices.
during power on time of the sensitive
devices.
– SEE failure rate prediction method under
radiation stresses.
radiation stresses.
– TID/DD reliability prediction method
– Sensitive devices TID/DD failure distribution—lognormal
Intrinsic radiation resistance—failure distribution parameters
Intrinsic radiation resistance—failure distribution parameters
Case study
Assume satellite to be launched in 2015，GEO，T=12 Y.
• Mission space radiation stresses: TID 69.8krad,
LET spectrum in figure 1 on full document.
• Key sensitive device: SRAM-FPGA，TID/SEU sensitive
• Ground test: 60Co TID, LINAC Heavy ion SEU
λTID prediction
FPGA failed TID test data
• λ SEE prediction
doEEEt media is the group behind every post on this blog.
A team of experts that brings you the latest and most important news about the EEE Part and Space market.
A team of experts that brings you the latest and most important news about the EEE Part and Space market.
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