Ionospheric D layer detection system and method based on multi-station lightning low-frequency pulse signals

Abstract

The embodiment of the invention relates to an ionospheric D layer detection system and method based on multi-station lightning low-frequency pulse signals. The system comprises at least two lightning low-frequency pulse signal detection acquisition devices in communication connection and a central processing device; each lightning low-frequency pulse signal detection acquisition device is used for detecting and acquiring and processing the lightning low-frequency pulse signals to obtain a sky-wave ground-wave pulse pair and the time and arrival time difference thereof; the center processing device is used to invert the height of the ionospheric layer D according to the relationship between the arrival time difference and the path difference of the sky wave and the ground wave. The system and method utilize lightning discharge as a radiation source, prevents high-power VLF-LF electromagnetic waves generated artificially, and greatly saves energy. In addition, because the lightning discharge can occur in different locations around the world, reasonable adjustment of lightning low-frequency pulse signal detection acquisition devices can measure the height of the ionosphere at different locations. The system and the method can be popularized and applied in a wide range, improve adaptive range and utilization rate of the ionospheric D layer detection system.

Description

technical field [0001] The invention relates to the technical field of ionospheric detection, in particular to an ionospheric D-layer detection system and method based on multi-station lightning low-frequency pulse signals. Background technique [0002] Because the ionosphere has the characteristics of reflecting radio waves, it has important applications in wireless communication. In order to obtain a good communication effect, it is necessary to detect the ionosphere to obtain characteristic parameters. At present, due to the limitation of detection means, the detection and research of the ionosphere are mainly concentrated on the E and F layers, while the research on the detection of the D layer is less. The height of layer D is about 50-100km, which is too high for sounding balloons and too low for satellite detection. Rocket detection can obtain the parameter characteristics of the D layer of the ionosphere, but there are problems of high cost and localized detection ...

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Problems solved by technology

[0006] Aiming at the defects in the prior art, the present invention provides an ionospheric D-layer detection system and method based on multi-station lightning low-frequency pulse signals, which are used to solve the problem of wasting more energy by artificially generating high-power VLF-LF electromagnetic waves in the prior art. The problem of not being able to promote the application on a large scale

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