Coded Imaging Lidar System Based on Fiber Array
Citation
吴诚 (WU Cheng), 邢文革 (XING Wenge), & 夏凌昊 (XIA Linghao). (2019). 光纤阵列编码成像激光雷达系统 (Coded Imaging Lidar System Based on Fiber Array). 现代雷达 (Modern Radar), 41(1), 5-8. doi: 10．16592 / j．cnki．1004－7859．2019．01．002
Keywords
- 激光雷达 / Lidar
- 光纤阵列 / Fiber Array
- 编码成像 / Coded Imaging
- 空间编码 / Spatial Encoding
- 合波形探测 / Combined Waveform Detection
- 解码 / Decoding
- 高分辨率成像 / High-Resolution Imaging
- 少探测器 / Fewer Detectors
- 小波去噪 / Wavelet De-noising
- 信噪比 / Signal-to-Noise Ratio - SNR
Brief
This article introduces a coded imaging lidar system based on a fiber array, which utilizes spatial encoding and decoding with fewer detectors to achieve high-resolution imaging and applies a wavelet de-noising algorithm to improve performance under low signal-to-noise ratio conditions.
Summary
This article presents a coded imaging lidar system based on a fiber array. This system uses spatial encoding and decoding to achieve high-resolution imaging with fewer detectors, addressing the challenges of developing large photodetector arrays. The system collects combined waveforms through the fiber array and then decodes them to reconstruct individual pixel information. Furthermore, the article discusses the application of a wavelet de-noising algorithm to the decoded signals to improve imaging results, especially under low signal-to-noise ratio conditions. Simulation results demonstrate that this de-noising method enhances the target's three-dimensional information retrieval. The proposed lidar system, which doesn't require a scanning device for one dimension, is suggested for airborne terrain scanning applications.
Origin: