Phase correction method and meteor position acquisition method

Abstract

The embodiment of the invention provides a phase correction method and a meteor position acquisition method, and the phase correction method is applied to phase difference correction of a plurality ofreceiving channels in an interference radar system. The method comprises the following steps: acquiring meteor data of a first meteor event recorded by an optical observation system; calculating reference spatial position information of meteors corresponding to the first meteor event according to the meteor data; acquiring the spatial position information of meteors corresponding to the first meteor event determined by a radar system; and obtaining a phase difference from the spatial position information and the reference spatial position information through comparison to obtain a phase difference deviation of the radar system. According to the embodiment of the invention, the meteor trajectory is recorded through the optical observation system, the accurate position of the meteor is calculated in combination with the trajectory data, and the correction parameters of the radar system are determined in combination with the position information of the same meteor recorded by the radar system to be corrected, so the phase correction precision of the radar system is improved.

Description

technical field [0001] The present application relates to the field of radar system phase correction, in particular, to a phase correction method and a meteor position acquisition method. Background technique [0002] The Earth's ionosphere is a region where the background neutral atmosphere is partially ionized, and the ionospheric inhomogeneity that appears therein is a structure in which the electron density is unevenly distributed. The inhomogeneity of the ionosphere can change the propagation path of radio waves, causing random and rapid fluctuations in the amplitude and phase of radio signals, resulting in the degradation of radio system performance. Radar is a common method for detecting ionospheric inhomogeneities. [0003] Radar emits radio wave signals, which will produce backscattered echoes when encountering inhomogeneous objects. By receiving the echo signal, the line-of-sight distance and moving speed of the uneven body can be obtained. When using multiple r...

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Problems solved by technology

However, this method needs to know the flight path of the aircraft, and at the same time requires the flight path to pass through the radar detection area, and its application scenarios have great limitations.

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