A readout electronics system is presented for the mobile direct detection Doppler Wind LIDAR (DWL). The structure of
the readout electronics is compact to fit the mobile DWL which is fixed on a truck. According to the wind measurement
principle of double-edge technique with triple-channel Fabry-Perot etalon, the readout electronics system is designed
adjustable for wind speed detection due to the multi-channel technique and reconfiguration of the FPGA. The
experimental results indicate that there is good consistency between the readout electronics and the current commercial
devices. The detection range of the experiments can cover the troposphere and low stratosphere even in daylight.