Ming Lei, Kai Nie, Hansheng Jiang, Pangda Dai, Jingli Wang. Design and Implementation of Digital Camera Visibility Instrument[J]. Acta Optica Sinica, 2021, 41(17): 1701001
- Acta Optica Sinica
- Vol. 41, Issue 17, 1701001 (2021)
Fig. 1. DPVS system observation diagram
Fig. 2. Schematic diagram of DPVS target light source system
Fig. 3. Block diagram of signal detection and processing circuit based on FPGA
Fig. 4. Volt ampere characteristic curve of LED
Fig. 5. Constant voltage and constant current driving circuit for LED
Fig. 6. Physical diagram of LED control circuit
Fig. 7. Actual observation results of system. (a) 2021-01-07; (b) 2021-01-08; (c) 2021-01-09; (d) 2021-01-10
Fig. 8. Comparison results of DPVS, LT31, PWD22, and manual observation. (a) Fine weather; (b) light haze; (c) moderate haze; (d) severe haze
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Table 1. Comparison of observation results of DPVS, LT31 and average visibility
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