Ionized layer foF2 parameter reconstruction method based on single receiving station

Abstract

The invention discloses an ionized layer foF2 parameter reconstruction method based on a single receiving station. The method comprises the steps of S1, selecting a plurality of short wave amplitude modulation broadcasting station signals with different signal frequencies as transmitting stations, and acquiring transmitting frequencies and coordinate positions of the transmitting stations; S2, computing great circle distances on the ground between the transmitting stations and the receiving station according to the coordinate position; S3, after the signal frequencies and great circle distances on the ground are known, acquiring an ionized layer parameter through inversion by using a genetic algorithm according to pitch angle data of the receiving signal acquired by measurement; and S4, performing a Kriging interpolation algorithm on the foF2 parameter in the ionized layer parameter to acquire a large area foF2 reconstruction result. According to the method provided by the invention, the ionized layer model foF2 parameter can be acquired via the genetic algorithm on the basis of not building the transmitting stations, and the large area foF2 reconstruction result is acquired via the Kriging interpolation algorithm, so that the method is provided for solving the problem that the ionized layer foF2 parameter cannot be acquired in real time due to the fact that most areas do not have ionosonde stations, and the positioning accuracy of the radar system can be effectively improved.

Description

technical field [0001] The present invention relates to the field of signal processing, in particular to an ionospheric foF based on a single receiving station 2 Parameter reconstruction method. Background technique [0002] The ionosphere is an ionized region distributed over 60km above the earth's surface, formed by ionization in the atmosphere due to radiation from the sun's ultraviolet rays and X-rays. Because it can change the propagation speed of radio waves, refract, reflect, scatter and be absorbed, the detection of the ionosphere is of great significance to the development of radio propagation, aerospace and military communications. [0003] At present, the acquisition of ionospheric parameters mostly adopts the International Reference Ionospheric Model (IRI model), but this model forecasts the average mode of the ionosphere, and cannot forecast the real-time state of the ionospheric parameters. Therefore, current report of ionospheric parameters mostly adopts det...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome above-mentioned deficiencies in the prior art and provide a kind of ionospheric foF based on single receiving station 2 The parameter reconstruction method is used to solve the problems that the active detection method is often used to obtain the state of the ionospheric parameters in the prior art, and the accuracy of the ionospheric parameters in the passive detection method is not high. The cover method only needs one receiving station. Some short-wave AM radio stations are used as transmitting stations, and the ionospheric foF is realized by the method of genetic algorithm inversion. 2 parameters, and then use the Kriging interpolation algorithm to obtain the large-area ionospheric foF 2 Refactoring of parameters

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