A single photon ranging method for high-speed moving targets
As a cutting-edge laser detection technology,single photon laser ranging technology has been successfully applied in the fields of lunar ranging,satellite ranging,and ground measurement.However,single photon ranging still needs to be solved when tracking and ranging high-speed moving targets on airborne air-to-air and ground-to-air plat-forms,where the echo photons fall in different time windows,resulting in direct counting that cannot effectively extract the signals.Aiming at the application requirements of single photon laser ranging under air-to-air conditions,a single photon ranging method is designed based on time-dependent photon counting technology for high-speed moving targets under full-time,wide-time domain,and multi-noise conditions.The laser echo photon signals are extracted using ar-rayed single photon detectors and the adjacent time window correlation statistical multi frame processing algorithm,and simulation experiments are carried out on the Matlab platform.The echo photon signals are extracted under the condi-tions that the maximum range is more than 100 km,the background noise count rate is about 5 MHz,and the average value of the single pulse echo photon count is 1 using the multivariate array single-photon detector.This method can overcome the limitations of traditional single-photon detection,which can only be aligned to static target ranging,and can only be applied in weak background noise and predictable target trajectory conditions such as small receiving field of view and wavelet gate range.The single photon detection can be extended from the range finding of static targets at night on a fixed platform to the range finding of high-speed moving targets all day on a general platform.
single photon laser rangingtime-dependent photon counting techniquehigh-speed moving targetcorrela-tion statistics
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