A new array receiving method based on multi-pixel photon counter

Abstract

The invention relates to a novel array receiving scheme, which belongs to the field of deep space laser communication; specifically, it is a novel array receiving method based on a multi-pixel photon counter, which mainly includes the feature of a large effective detection area based on a multi-pixel photon detector And designed. The scheme first transmits the optical signals received by the N antennas on the gimbal to the effective detection area of ​​the MPPC through multimode optical fibers, then samples and stores the optical signals detected by the MPPC, and finally sends them to the computer to complete error correction and decoding ; The present invention transmits the optical signals received by multiple antennas to the MPPC for detection, compared with the traditional receiving scheme directly placing a photon detector array at the focal plane of each antenna, it greatly saves High cost photon detector count. Adopting this scheme is not only easy to implement and saves cost, but also can achieve the same detection effect as the currently commonly used receiving scheme.

Description

technical field [0001] The invention belongs to the field of deep-space laser communication, and relates to a novel array receiving method based on a multi-pixel photon counter. Background technique [0002] Due to the advantages of large capacity, low power consumption, and small antenna size, laser communication has great development prospects in long-distance space laser communication. In deep space laser communication, the two technologies of photon detection array and pulse position modulation (PPM) have many advantages such as high energy efficiency, strong anti-interference ability and high detection frequency, so they are widely used. [0003] For the deep space laser communication system, due to the long communication link, the optical signal reaching the ground receiving end is very weak, and the radiation of atmospheric turbulence and sky background light will have a serious impact on the communication link, thus deteriorating the performance of the communication ...

AI Technical Summary

Problems solved by technology

But its main disadvantage is that only one photon can be resolved at a time, and it generally takes a long recovery time to detect the next photon, so the repetition rate of the device is low.

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