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

Figure 5

Comparison of the histograms of the spectral peak locations (a, c) and the spectral widths (b, d) of the ionospheric echoes (a, b) with those of the sea echoes (c, d). The arrow shown in bottom left panel indicates the location of the first-order Doppler spectral peak of the sea echoes at 0.218 Hz for comparison.

(a)

(b)

(c)

(d)