Prof. Bin Zhao Profile

Prof. Bin Zhao

at Institute of Optics and Electronics

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Proceedings Article | 12 March 2021 Paper

Long-range coherent lidar based on pulse-compression

Jing Yang, Bin Zhao, Bo Liu

Proceedings Volume 11763, 117631E (2021) https://doi.org/10.1117/12.2586276

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A low-peak chirp-modulated long-pulse signal can be compressed into a high-peak narrow pulse by using pulsecompression, thereby improving the sensitivity and resolution of lidar. In this paper, we optimized a pulse-compression lidar system to greatly improve the detection range. We take absolute scheme to process IQ signals when signal-to-noise ratio (SNR) is smaller than 1. The voltage amplitude resolution of oscilloscope is improved to increase SNR. With these important improvements, the system can measure a building about 5.725 km away. We explore and demonstrate the long-range performance of this system in detail. The standard deviation of one single measurement is 1.82 m and reduces to 0.69 m after 10 accumulations

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