Abstract: The application of fiber sensing measurement for spacecraft is explored extensively towards the special requirement and limitation brought by the space environment. The fiber grating is selected from various techniques to transfer the physics such as temperature, pressure into signal. The design and realization of the demodulation for the fiber grating sensing system are analyzed comprehensively. CCSDS recommendations are applied to package and transmit the measuring data. Methods are explored aiming to improve the environmental suitability of the measuring system towards the special requirement of the mechanical and radiation environment. A feasible solution for the measurement of space physical parameter is promoted.

Key words: Fiber sensing, Spacecraft, Measurement, Fiber grating