Liyan Li, Songtao Fan, Yan Zhou. Eliminating light intensity disturbance algorithm based on phase demodulation carrier[J]. Infrared and Laser Engineering, 2021, 50(9): 20210485
- Infrared and Laser Engineering
- Vol. 50, Issue 9, 20210485 (2021)
Fig. 1. Schematic of the new demodulation algorithm
Fig. 2. Single frequency signal simulation of different frequencies. (a) The frequency is 500 Hz; (b) The frequency is 1 000 Hz; (c) The frequency is 1 500 Hz; (d) The frequency is 2 000 Hz; (e) The frequency is 2 500 Hz; (f) The frequency is 3 000 Hz
Fig. 3. Signal restore of 500 Hz during different interference intensity. (a) B =1 mW; (b)B =2 mW; (c) B = 3 mW; (d) B = 4 mW
Fig. 4. VI of PGC-DCM and new method
Fig. 5. Test of the influence of light intensity disturbance on the demodulation result of PGC-DCM and the new method. (a) B =0.5 mW; (b) B =1 mW; (c) B = 2 mW; (d) B = 3 mW
Fig. 6. Experiment architecture
Fig. 7. Schematic diagram of system experimental setup
Fig. 8. Performance of new method tested by different light intensity. (a) Light power is 10 mW; (b) Light power is 20 mW; (c) Light power is 30 mW; (d) Light power is 40 mW
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Table 1. Parameters of test system
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