国产欧美精品一区二区,中文字幕专区在线亚洲,国产精品美女网站在线观看,艾秋果冻传媒2021精品,在线免费一区二区,久久久久久青草大香综合精品,日韩美aaa特级毛片,欧美成人精品午夜免费影视

For satellites, energy is an extremely important resource. In order to save the energy and prolong the life of satellite, the power control strategy of TT C link between satellite and ground is studied. First of all, the factors causing signal attenuation of TT C link between satellite and ground are analyzed. On this basis, the calculation model of signal-to-noise ratio of satellite downlink is established. Then, on the premise that the ground equipment can demodulate the satellite telemetry data correctly, a closed-loop power control strategy based on the signal-to-noise ratio balance criterion is proposed in TT C link between satellite and ground. Finally, the influence of the proposed power control strategy on satellite power consumption and rain attenuation is simulated and analyzed by using the calculation model. The results show that the proposed power control strategy can greatly reduce the power consumption of the satellite, and has low complexity and engineering practicality. At the same time, it has a strong inhibitory effect on rain attenuation and can effectively improve the tracking time of equipment to ensure the satellite downlink signal reception.