Cross Spectral Analysis of CODAR-SeaSonde Echoes from Sea Surface and Ionosphere at Taiwan

Figure 1

(a) shows examples of the range-Doppler frequency-intensity distribution of the sea and the ionospheric echoes recorded by the receiving channel 3 of the DATAN CODAR-SeaSonde on 15 October, 2015, at 15:58:02 LT, and (b, c) present Doppler power autospectra (first row), cross spectra (second row), coherence spectra (third row), and phase spectra (bottom row) of the normalized cross spectra for the sea echoes at 25.95 km (b) and ionospheric echoes at 222.41 km (c), respectively.

(a)

(b)

(c)