In recent years, Doppler LiDAR has been increasingly utilized in various fields, and it is anticipated to be implemented for upper-level wind observations required for the safety assessments of nuclear reactor facilities and for environmental impact assessments of thermal power plants. In order to utilize the Doppler LiDAR for long-term continuous observation of upper-level wind, it is essential to verify the measurement accuracy of the instruments and their applicability for long-term continuous observations throughout the year. In this study, parallel observations of the Doppler SODAR and two types of Doppler LiDAR with different specifications were conducted at a coastal site with undulating topography, which is common for power plant locations in Japan. It was found that the Doppler LiDAR ensured the same measurement accuracy as the Doppler SODAR. In addition, as a result of examining the applicability to long-term continuous observations at four sites with different surrounding topography and weather conditions, it was confirmed that, regardless of the observation location and Doppler LiDAR model, the missing data rate of the Doppler LiDAR for the area between 50 m and 140 m in height is below the guidelines of “the annual missing data rate should be less than 10%, and the maximum missing data rate for the sequential 30-day period should be less than 30%” as specified by the Meteorological Guidelines. Therefore, the Doppler LiDAR is judged to be sufficiently practical for long-term continuous observation of the upper-level wind throughout the year. However, since the data acquisition performance of the Doppler LiDAR varies depending on the model and observation location, it is also important to select the appropriate model according to the target observation height, season, meteorological conditions, and observation location in order to maintain a higher data acquisition performance.