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- W4386987362 abstract "The photonic heterodyne detection system, which has both the anti-interference advantage of the heterodyne detection and the detection sensitivity at the photon level, is widely used in the detection of long-range non-cooperative targets. In this paper, a joint algorithm is proposed to improve the signal-to-noise ratio (SNR) of the system for the problem of low SNR in remote target detection. Firstly, the photon arrival sequences with initial phases in the range of (-π/4, π/4) are coherently accumulated, and then the autocorrelation algorithm is used to obtain the final power spectral density (PSD). After being processed by the joint algorithm, the differential frequency amplitude of the experimental signal is finally improved by a factor of 3.14 and the SNR is improved by a factor of 2.72." @default.
- W4386987362 created "2023-09-24" @default.
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- W4386987362 date "2023-11-01" @default.
- W4386987362 modified "2023-09-30" @default.
- W4386987362 title "A joint algorithm based on photon heterodyne detection" @default.
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- W4386987362 doi "https://doi.org/10.1016/j.infrared.2023.104928" @default.
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