Fat suppression with short inversion time inversion-recovery and chemical-shift selective saturation: a dual STIR-CHESS combination prepulse for turbo spin echo pulse
where [a.sub.k] is the amplitude of the shape of the kth echo pulse
and [[tau].sub.k] is its time delay.
Due to acoustic pulse transmitting and echo receiving the lag between can be measured, and the velocity of sound in the oceans is known, so they can take advantage of the echo pulse
radiation of underwater target detection, location and recognition.
When target appears, the Kalman filtering approach is used to estimate EBPSK modulated echo pulse
. Furthermore, CFAR target detection probability of the new JRC system in Weibull and K distribution clutter is deduced.
(1) [T.sub.1]-weighted, spin echo pulse
sequence, repetition time (300 ms), echo time (18 ms), section thickness (6 mm), field of view (26 cm), number of excitations (2), and matrix size (256 x 256);
As shown in (11), the phase of STRETCH processing echo pulse
is related to the radial distance [R.sub.i] of target and the reference distance [R.sub.ref].
The bottom end of the secondary echo pulse
of the wave train was coincided to the gate pulse.
The ST-270 SonicLaser ultrasonic sensors use echo pulse
technology that measures the round trip time-of-flight of acoustical transmissions reflected from a liquid, slurry, granular or free flowing powder surface in almost any industry, according to the company.
On receive, the echo pulse
is routed from the antenna to the RF preamplifier and mixer, where it is translated to an intermediate frequency.
Strong echo pulse
from the phantom target occurring at the depth of 22 mm is shown magnified on Fig.2, (c) and its amplitude spectra on Fig.