Circuit Design and Realization of capacitive Atmospheric refractive index Measurement instrument

Abstract

The accurate measurement of atmospheric refractive index can greatly improve the radar detection accuracy, communication equipment communication distance, and effectively predict the generation of atmospheric waveguide.The common atmospheric refractive index instruments include the five-nine sonde and the high precision microwave refractive index instrument.According to the principle that the oscillation frequency of the gas will change when the gas in the environment is changed, this paper designs the hardware module composition and software circuit of the light-duty capacitive atmospheric parameter tester, and the light-duty capacitive refractive index tester with LC oscillator as the main element.Finally, experiments show that the fitting degree and accuracy of the capacitive instrument data curve are second.