空间飞行器近尾区内场和密度的数值计算

利用Fourier变换的方法，研究了运动飞行器与周围等离子体，在近尾区内非稳态非线性相互作用问题，得到了场和密度扰动的分布，结果显示，由于场的塌缩效应，在飞行器的近尾区，有可以被探测到的密度空洞和电磁孤波形成。通过对这种密度空间和电磁孤波的探测，可以跟踪探测隐身飞行器的轨迹。

The numerical calculation of electric field and density cavitons in the vicinity of moving body

In this paper,using the method of Fourier translation,the nonsteady and nonlinear interaction between the moving body and plasma in the wake region has been studied in detail.The distributions of the electromagnetic soliton and density disturbance have been obtained.In the study,two fluid equations and two time scales had been used.Two dimensional FTCS had been adopted as the numerical method.The results show that in the wake region of the moving body there are the formation of the electromagnetic soliton and density disturbance.They can be detected due to the collapse of electric field.We can trace out the moving body by means of observing the structure and intensity of the density caviton and electromagnetic soliton although the body may be a stealthy vehicle.