Research on Signal to Noise Ratio of High‑speed Small Targets Based on Laser Screen

Table 1. Signal‑to‑noise ratio under different laser power
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Table 1. Signal‑to‑noise ratio under different laser power
激光器功率/mW 信号幅值/V 噪声/V 信噪比理论值/dB 信噪比实际值/dB
50 0.38 0.16 8.56 7.5
100 0.85 0.18 14.56 13. 44
150 1.4 0.2 18.08 17
200 输出端饱和

Table 2. Optical power values at different angles （mW）
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Table 2. Optical power values at different angles （mW）
反射屏/角度 0/(°) 10/(°) 20/(°) 30/(°) 40/(°) 50/(°) 60/(°)
Ⅰ 0.91 0.83 0.74 0.61 0.47 0.26 0.11
Ⅱ 1.01 0.99 0.92 0.82 0.70 0.53 0.32
Ⅲ 0.95 0.92 0.81 0.64 0.50 0.26 0.17

Table 3. Signal to noise ratio of different reverse reflection efficiency
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Table 3. Signal to noise ratio of different reverse reflection efficiency
入射角度/(°) 逆反射效率/(%) 信号幅值/V 噪声/V 信噪比理论值/dB 信噪比实际值/dB
0 80 1.6 0.2 18.16 18
30 65 1.24 16.36 15.8
45 50 0.96 14.08 13.6
60 25 0.52 8.06 8.2

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Peng XU, Xudong LI, Junliang LIU, Minggang CHEN, Jiahao FAN, Hui ZHAO. Research on Signal to Noise Ratio of High‑speed Small Targets Based on Laser Screen[J]. Optoelectronic Technology, 2024, 44(1): 13

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