Ionosphere non-coherent scatter radar differential phase detection method

Abstract

The invention provides an ionosphere non-coherent scatter radar differential phase detection method, comprising steps of 1 computer simulation and modeling research, 2 non-coherent scatter software radar verification test, 3 non-coherent scatter radar verification test, and 4 optimization and improvement of the radar echo numerical module, the parameter extraction algorithm and the test method according to the computer simulation and practical detection result. The invention can simultaneously and fast obtain the parameters of the high accuracy electronic density of the whole ionosphere height, the electronic temperature, the ion temperature, the plasma drift speed in the direction perpendicular to the magnetic line, etc.

Description

technical field [0001] The invention relates to an incoherent scattering radar differential phase detection method, which is suitable for incoherent scattering detection of space plasma targets by ionosphere incoherent scattering radar under the condition of low signal-to-noise ratio. Background technique [0002] Incoherent scattering detection refers to the ionospheric detection method that electromagnetic waves are scattered in the ionosphere due to the random thermal fluctuations of the quasi-equilibrium electron density, and the energy is received to obtain the physical parameters of the ionosphere. The traditional ISR detection method is to analyze the power spectrum or autocorrelation function of the incoherent scattering echo in the measured plasma region, and obtain the ionospheric parameters of the measured plasma region through back-playing. Although ISR is the most effective device for measuring ionospheric parameters, its high construction and operation costs li...

AI Technical Summary

Problems solved by technology

Although the ISR is the most effective device for measuring ionospheric parameters, its high construction and operating costs limit its wide application

Moreover, the traditional ISR detection technology has high requirements on the signal-to-noise ratio of the echo, and requires a huge transmission power and a long accumulation time during detection. However, effective parameters cannot be extracted in low-SNR environments (such as at night); ISR detection technology can only detect limited ionospheric parameters and regions in a single detection mode. Generally, it is necessary to switch between different detection modes to detect different ionospheric parameters and regions, and the detection efficiency is not high.

Therefore, the existing ISR detection technology often cannot continuously and effectively obtain ionospheric parameters in time or space, and many phenomena in the ionosphere cannot be observed, and the research of space physics requires continuous measurement of ionospheric parameters

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