Figure 1: Echo power is plotted on a linear scale
versus Doppler frequency from +450 Hz (approaching) to -450 Hz
(receding). The central bar at the origin of each spectrum shows
1 standard deviation of the receiver noise. The data were first
averaged in 20-degree phase bins and then smoothed to a frequency
resolution of 30 Hz. The weighted-average phase is given at the
upper left of each spectrum. End-on views are at 0 and 180
degrees. The Doppler spectrum of the reference ellipsoid at each
of these weighted-average phases is shown in red for comparison
with the data.
Return to Text |
