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University of Florida Department of Mechanical & Aerospace Engineering

CLICK

Article

Laser Link in Space

The CLICK (CubeSat Laser Infrared CrossLinK) mission demonstrates high-speed data transfer between two satellites in low Earth orbit using infrared lasers at 20 Mbps. By employing pulse-position modulation, the satellites encode information based on the precise timing of laser pulses, synchronized using chip-scale atomic clocks (CSACs) for nanosecond-level accuracy. This precise synchronization enables the satellites to achieve 50 cm ranging precision and reliable time-of-flight measurements, essential for future space communication networks.

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Poster

Laser communication, timing transfer, rangingand PAT in the CLICK B/C mission

LISA's laser link requires Pointing, Acquisition and Tracking (PAT) and deploys laser data communication, timing transfer and ranging. CLICK (CubeSat Laser Infrared CrosslinK) is an independent demonstrator for these concepts.

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