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Water vapor and wind-velocity measurements from space using 2-μm wavelength

AEROSPATIALE, prime contractor, presents the main results related to the activities performed in order to demonstrate the feasibility of a coherent 2 micrometer lidar instrument capable of measuring water vapor and wind velocity in the planetary boundary layer, and to determine the main subsystem critical items: (1) selected instrument configuration and associated performances, (2) 2 micrometer laser configuration with phase conjugation, (3) coherent receiver chain architecture, (4) frequency locking and offsetting architecture. The second phase of this study will be dedicated to breadboard the most critical elements of the instrument at 2 micrometers in order to technologically consolidate the feasibility of such an instrument.