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Wavelet analysis of low frequency plasma oscillations in the magnetosheath of Mars

Fränz, M.; Bolzan, M. J. A.; Echer, E. +1 more

Wavelet analysis was employed to identify the major frequencies present in the plasma oscillations in the Martian magnetosheath. We have selected magnetosheath crossings and applied the Morlet wavelet transform to the electron density and temperature data, obtained from the Analyzer of Space Plasmas and Energetic Atoms experiment (ASPERA-3), onboa…

Using cross correlation to estimate Doppler frequency

Li, Fei; Yan, Jianguo; He, Qingbao +2 more

Doppler frequency estimation with high accuracy is very important for precise orbit determination and scientific studies in deep space exploration. In this paper, we propose a new method which implements cross correlation of only received signals from one single station to estimate Doppler frequency. The algorithm is relatively simple and it can a…