Optical atomic clocks have shown superior stability performance but face challenges to being deployed outside of the laboratory, such as technical complexity and reliability in dynamic environments. The chip-scale atomic clock (CSAC) has impressive stability performance at its size, weight, and power (SWaP), but it suffers limitations in long-term performance due to various drift mechanisms that are currently being addressed through exploration of new physics approaches. ![]() To ease reliance on GPS, long-holdover clocks with cost, size, weight, and power (CSWaP) appropriate for various DoD platforms are necessary to enable mission-critical functions even in contested environments.įocused research over the past 10-15 years has led to portable timing technology advances including miniaturized vapor cell microwave atomic clocks that are now commercially available. Assured positioning, navigation, and timing (PNT) solutions currently rely on acquiring GPS signals, which may not be readily available in increasingly contested environments and therefore may need to hold precise time for minutes to hours. ![]() OBJECTIVE: Develop, demonstrate, and deliver a portable (rackmount) optical atomic clock with volume < 20 L, weight < 30 kg, power < 100 W, and stability (< 3 x 10-13 at 1 second) that can be utilized in Army systems requiring precise timing in global positioning system (GPS)-denied environments.ĭESCRIPTION: Precise timing is critical for numerous Army applications such as navigation, communications, surveillance, and synchronization of sensors and systems.
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