. The Bell System technical journal . i. In the same figure is shown an assumed pulse shape inthe absence of phase distortion, which is the same as shown in Fig. 13,except that the small tail has been neglected. The peak of the pulse istaken at (fmax = —, and the amplitude of the resultant pulse at the * \transmitted pulse AMPLITUDES .-PULSE ECHOES. 0t wax Fig. 22— Illustrative example of cakuhition of impulse characteristic shownin Fig. 23, by method illustrated in Fig. 2()(d). 758 THE BELL SYSTEM TECHNICAL JOURNAL, MAY 1954 5 \ 10 15 / J \ A 10 ^ ] /
. The Bell System technical journal . i. In the same figure is shown an assumed pulse shape inthe absence of phase distortion, which is the same as shown in Fig. 13,except that the small tail has been neglected. The peak of the pulse istaken at (fmax = —, and the amplitude of the resultant pulse at the * \transmitted pulse AMPLITUDES .-PULSE ECHOES. 0t wax Fig. 22— Illustrative example of cakuhition of impulse characteristic shownin Fig. 23, by method illustrated in Fig. 2()(d). 758 THE BELL SYSTEM TECHNICAL JOURNAL, MAY 1954 5 \ 10 15 / J \ A 10 ^ ] / J \ 4 \j v/ -5 -4 -3-2-1 0 1 2 Fig. 23 — Impulse transmission chamcteristics with cosine variation in delay. corresponding point obtained by the method illustrated in d of Fig. 20is P = 4- ( + ) -H ( - ) + ( ) In Fig. 23 are shown the resultant pulses obtained by the above methodfor various values of h and the corresponding values of c?ma,x/mas • Sincethe interval between pulse echoes is small in relation to the duration ofthe pulse Po(t), as seen from Fig. 22, the individual pulse echoes cannotbe discerned in the resultant pulses sh
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