Precision Timing for Reliable PNT in GNSS Challenged Environments
This whitepaper discusses how timing errors propagate through PNT stacks, and what to design for when external references become unavailable or untrusted.
Download the Whitepaper.webp)
What You Will Get:
Clear, engineering-focused guidance on holdover, recovery, vibration effects, thermal transitions, and reliability in real operating environments.
Three Key Takeaways:
A 10-nanosecond timing error can cause a 3-meter tracking offset at operational velocities.
Under vibration, quartz phase noise deteriorated by about 20 dBc per Hz at 7.5 g RMS, while the SiTime MEMS oscillator stayed unaffected, even at 20.7 g RMS.
Quartz MTBF is about 30 million hours, while SiTime MEMS oscillators exceed 2 billion hours, reducing predicted failures across a 10,000-unit fleet from 3 units to 0.04.
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SiTime is defining the future of Precision Timing
Engineers designing PNT systems that operate through vibration,thermal cycling, shock, and high dynamics.
Teams planning for GNSS loss, holdover requirements, and recovery behavior at the system level.