Adaptive closed-loop power control apparatus for satellite-ground combined Ka band

The invention provides an adaptive closed-loop power control apparatus for a satellite-ground combined Ka band. The apparatus comprises a digital comprehensive baseband (1), a remote control uplink device (2), a power controller (3), a Ka power amplifier (4), an antenna (5), a satellite measurement and control device (6), a low noise amplifier (7), a telemetering downlink device (8) and a telemetering parameter analysis device (9); lock indication and AGC status parameters of the satellite measurement and control device under the influence of rain, snow, wind, tracking errors, flashing errors and the like are received in real time and are compared with the lock indication and AGC status parameters of the satellite measurement and control device received in a clear sky state, a status difference value of AGC is used as a parameter to control the Ka power amplifier to form the adaptive closed-loop power control of the satellite-ground combined Ka band, so that the power amplifier works at the optimal power point, and the satellite measurement and control device works in the optimal status.