The invention belongs to the field of
spaceflight test control and communication technology and discloses a
simulation method for radial time-varying
electron densities of a
plasma sheath of a high-speed aircraft. The method comprises the steps that steady
electron densities are generated according to radial obedient double-
Gaussian distribution of the steady
electron densities on the aircraft; an expected
frequency response matrix of a two-dimensional filter is obtained through time-varying electron densities and power spectral densities; a two-dimensional
Gaussian window function is generated, windowing function
processing is performed on the expected
frequency response matrix of the two-dimensional filter, and an amplitude-
frequency response of the two-dimensional filter is obtained; and two-dimensional
Gaussian white noise is generated and subjected to filtering
processing through the two-dimensional filter, radial
electron density time-varying offset of the
plasma sheath of the high-speed aircraft with a probability density function and the power spectral densities meeting requirements is obtained, and the radial
electron density time-varying offset and the steady electron densities are superposed to obtain a time-varying
plasma sheath
electron density sequence. Through the method, high difficulty and
high complexity of direct modeling of two-dimensional electron densities are avoided; and an electromagnetic
calculation error caused by a
dielectric model error is avoided.