Simulation and analysis onf the effect of aperture matching on uplink propagation for relay mirror systems

Abstract

Abstract: The model for uplink propagation for the relay mirror systems is established, and using the 4-D code for laser propagation in the atmosphere, the effect of aperture matching on uplink propagation for relay mirror systems is simulated and analyzed by the 4-D code for laser propagation in the atmosphere. The far-field peak power density of the received beam of which the distorted phase is completely removed is selected as the evaluation function of the uplink propagation process. The optimal focal lengths for of different transmitting apertures are picked out based on the calculation in vacuum, and the uplink propagation in the atmosphere for different transmitting apertures with their respective optimal focal length is simulated. Results show that with a certain receiver aperture, the optimal focal length decreases while the transmitter diameter increases; the critical launching power increases with the increase of transmitter diameter; when the launching power is small, the change in transmitter diameter imposes little effect on the performance, while but when the launching power is high enough, the performance of the relay mirror system is improved significantly with the increase of transmitter diameter.

Key words: laser techniques, relay mirror, aperture matching, performance evaluation function

CLC Number:

ZHANG Jinghui, FAN Chengyu, MA Huimin, ZHANG Pengfei, WANG Haitao, WANG Yingjian. Simulation and analysis onf the effect of aperture matching on uplink propagation for relay mirror systems[J]. J4, 2013, 30(3): 298-302.

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