1.55 mm pulse coherent LIDAR with 10 km detection range
Abstract. Recently, a 1.55 mm pulsed coherent Doppler LIDAR system using all fiber optical components was developed to achieve real time measurements of wind fields. The system employs 100 mJ pulse energy at 10 kHz pulse repetition rate. In addition, the system consists of a fiber based optical transceiver unit, a two axis scanner, and a multicore digital signal processor (DSP) for real time signal processing. With compact and mobile design, the LIDAR is easy to transport and deploy for different field campaigns. For a different application of LIDAR, the range resolution can change manually. A horizontal detection range of 10 km is achieved with the temporal and spatial resolution of 1 s and 30 m, respectively. Field experiments compared with an anemometer show that correlation coefficient of the different wind speed measurements is 0.953; the correlation coefficient for wind direction values is 0.967. Continuous wind profiles of the planetary boundary layer are presented to demonstrate the stability of the system.
Optical Engineering