Robust MEMs Oscillator Replacement for Quartz Crystal TCXO Oscillator

High Precision Temperature Compensated Crystal Oscillators (TCXO's) are used in GPS receivers, radio transceivers, and other radio frequency devices used in guided munitions. Quartz TCXO's are useful as a clock reference for these devices because of their high frequency stability, often well below 2 parts per million (ppm). However, quartz crystal devices are sensitive to both mechanical shock and rapid temperature changes. This is particularly an issue for high velocity gun-launched guided projectiles. This topic seeks a MEMS oscillator comparable in performance to temperature-compensated crystal oscillators (TCXO) in frequency accuracy, temperature stability, while providing similar or improved phase noise. The design must be survivable up to 30kgee high-G mechanical shocks during firing and temperature extremes with rapid fluctuations up to 250 degree F/min (surface) caused by aeroheating during flight. The design must also remain within or reduce the size, weight and power envelope of existing crystal oscillators it is meant to replace. The design must also perform within the operational constraints of existing crystal oscillators by exhibiting minimal aging and acceleration sensitivity, and by reaching a functional level of stability (