Laser & Optoelectronics Progress, Volume. 57, Issue 9, 092802(2020)
Influence of Satellite Micro-Vibrationon Signal-to-Noise Ratio of Wind LiDAR
The measurement of atmospheric wind field is of great significance for global climate change, sea storm detection, accuracy of daily weather forecast, and even national military security. Space-based coherent wind light detection and ranging (LiDAR) has attracted wide attention due to its high time-space resolution, high sensitivity, real-time detection, and small volume. Most spacecraft have micro-vibration disturbance sources, which can influence the signal-to-noise ratio (SNR) of coherent wind LiDAR. Based on the principle analysis of coherent wind LiDAR system, this paper analyzes the influence of satellite micro-vibration on the signal-to-noise ratio of the coherent wind LiDAR, based on the measured data of a certain type of micro-vibration. The experimental results show that satellite micro-vibration has a certain effect on the signal-to-noise ratio of coherent wind LiDAR. When the mismatch angle is 3.77 μrad, the signal-to-noise ratio fluctuates between -1.5 dB and 1.36 dB, and the impact is relatively weak. From a micro-vibration perspective, a satellite platform can meet the detection requirements of a coherent wind LiDAR.
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Qipeng Cao, Yongchang Li, Xiaojing Dong, Chao Wang, Jing Wang. Influence of Satellite Micro-Vibrationon Signal-to-Noise Ratio of Wind LiDAR[J]. Laser & Optoelectronics Progress, 2020, 57(9): 092802
Category: Remote Sensing and Sensors
Received: May. 28, 2019
Accepted: Sep. 26, 2019
Published Online: May. 6, 2020
The Author Email: Cao Qipeng (caoqipeng2004@126.com)