Reentry vehicle breaks through black barrier communication system

Abstract

The invention relates to a blackout broken reentry aircraft communication system and method. The system is composed of a signal transmitting part on an aircraft and a signal transfer part on a transfer aircraft. The signal transmitting part comprises a four-quadrant detector, a laser communication transmitter and a first rotation mechanism; the four-quadrant detector and the laser communication transmitter are mounted on the first rotation mechanism; the signal transfer part is composed of a laser detector, a laser communication receiving antenna, a transfer radio frequency transmitter and a second rotation mechanism; the laser detector is mounted on the second rotation mechanism. When the aircraft lands, the laser detector locks the reentry aircraft and continuously transmit indication laser beams; the first rotation mechanism rotates, therefore the communication laser beams fall on the laser receiving antenna; and the communication laser beams are converted into radio frequency signals and then are sent to a ground surface. The system and the method provided by the invention has the advantages that (1) the reentry aircraft can send out information in a laser format; therefore, the information still can be sent out in a blackout area; and (2), when the reentry aircraft returns, the signal transfer aircraft flies to a sufficient height, the laser beams can be prevented from being blocked by clouds.

Description

technical field [0001] The invention relates to a communication system for a reentry aircraft to break through a black barrier. Background technique [0002] When a high-speed aircraft re-enters the atmosphere, the air is compressed sharply, and a strong shock wave will be formed at the front of the aircraft. Due to the strong friction between the wall of the aircraft and the air molecules, the temperature and pressure of the air around the aircraft rise sharply, so that the electrons of the molecules and atoms in the air are excited to a high energy level, ionization occurs, ions and free electrons appear, and plasma is formed on the periphery of the aircraft Body sheath. During the propagation of the electromagnetic wave in the plasma sheath, the intensity of the electromagnetic wave is attenuated due to reflection and absorption by the plasma sheath, and effects such as deflection, delay, and phase shift occur; at the same time, the plasma sheath will cause serious loss ...

AI Technical Summary

Problems solved by technology

[0004] Some of the above methods have been proved to be effective through experiments, but the effect is limited, because the common point of these methods is to reduce the attenuation of electromagnetic waves in the black barrier area, and the degree of reduction often cannot meet the requirements of measurement and control communication, such as a One person can lift a 100-jin stone, another person can lift a 200-jin stone, and now there is a 500-jin boulder, the latter person can't lift it even though he is stronger

Images