A Method of Design and Evaluation of X-ray Communication in Black-Out Area

In order to solve the communication problem in black-out area caused by the hypersonic vehicle or re-enter spacecraft, a communication scheme is proposed based on X-ray for electromagnetic shielding of complex media. The principle of laser-X-ray conversion module has been analyzed. According to the space application environment, the X-ray generation model is established by using the Monte Carlo software (MCNP), and the optimal metal target thickness and photon conversion efficiency of the transmission structure are simulated against different load environments. On this basis, the engineering model of space X-photon transmission is deduced. Combined with the existing core component level, the effective transmission rate of X-ray control signal under different communication distances is estimated. Simulated results point out that the X-ray band carrier transmission network can penetrate the black-out plasma medium with an electron density of 1017/m3 order at a distance of 20 km and realize the information transmission at the rate of 75 kps and the bit error rate of 10–6, which provides technical support for cracking the reliable transmission of information in complex electromagnetic environment.