Near space plasma environment ground simulation device and simulation method thereof

Abstract

The invention provides a near space plasma environment ground simulation device and method, and the device comprises a vacuum system, a drawable vacuum microwave anechoic chamber system, a plasma beam generation system, an air inlet system, a water cooling system, an excitation power supply system, a vacuum pump set system, a target bluff body system, a microwave anechoic chamber supporting system, a target bluff body support system, a plasma parameter diagnosis system, a microwave transmission measurement system, a miniaturized antenna group system and a central control system. Electromagnetic communication measurement of a plasma environment can be realized in a frequency band range of 100MHz-40GHz, plasma parameter diagnosis is mutually checked through different diagnosis modes, and plasma beams with high purity and adjustable plasma density and beam size are generated for a long time; the near space plasma environment can be simulated more truly, and microwave transmission measurement and plasma diagnosis means required for carrying out related research in the environment can be provided.

Description

technical field [0001] The invention belongs to the technical field of electromagnetic measurement, and in particular relates to a ground simulation device and a simulation method for a plasma environment in a near space. Background technique [0002] When a superb or re-entry vehicle flies in the adjacent space of 20-100km at a speed exceeding Mach 5, due to the intense friction between the head of the aerodynamic vehicle and the air, the heating effect will ionize the surrounding air and form a layer of plasma sheath on the surface of the vehicle , the plasma sheath is composed of a large number of particles, including electrons, ions, and neutral molecules, and its density usually exceeds 10 18 m -3 , High-density plasma will attenuate the electromagnetic wave signal for communication, forming an electromagnetic communication blackout phenomenon. When the radar detects a high-speed aircraft, the return signal will be reduced or even distorted due to the existence of the ...

AI Technical Summary

Problems solved by technology

However, currently publicly reported electromagnetic experiment systems for ground simulation of near-space environments generally study electromagnetic wave bands ranging from 1 to tens of GHz, and usually do not consider signals such as MHz under low-frequency conditions.

Images