Experimental Data Validation for the Radar Data Collection System in Qixia District, Nanjing City (January 2025).

In January 2025, a laser radar system was set up on the open-air site of the office building of Nanjing Xinhuan Optoelectronic Technology Co., Ltd. for echo signal acquisition experiments. In order to prevent laser emission to the mountains, the radar system was configured to emit laser in a directional manner towards the sky at a certain elevation angle in the experiment. In the subsequent optical path of the radar system, a spectroscope with a spectral ratio of approximately 70T: 30R is used to split the backscattered signal received by the telescope into two paths. Two Japanese Hamamatsu H10721-210 PMTs are used to amplify and convert the two optical signals into electrical signals. Simultaneously use the acquisition card developed by the research group and the TR40-16bit-3U transient recorder from Licel, Germany to collect two electrical signals. The dataset consists of experimental results from the night of January 15, 2025 to the early morning of January 23, 2025, with only the experimental results of the Licel system saved on January 16; The experimental results on January 18th and 19th were affected by interference from other radar signals, resulting in periodic fluctuations in the bottom noise; Due to heavy fog in the early morning of January 23rd, the data has certain peculiarities.