In practical use, the scattering centers on the warhead are non-ideal, and they do not move as the warhead with
precession. To solve this problem, a wideband radar echo simulation model for midcourse precessional target is developed in this paper, where the micro-motion model, electromagnetic scattering calculation and linear frequency modulated radar signal model are integrated.
In the
precession of a ballistic target, due to the sliding-type scattering, the m-D effect is not a form of sinusoidal modulation and there are six parameters can be used in target identification included four m-D features and two structural parameters totally [27].
As the taildragger's tail is raised--and its nose/propeller lowered--during the takeoff roll, gyroscopic
precession occurs.
Consequently, the equations by which there are determined the natural angular frequencies, regarding both the forward and the backward
precession, are obtained out of the relations (4), (6) by substituting h with h = 0.
This revealed the orbital period [P.sub.orb] = 3.28hr, the superhump period [P.sub.sh] = 3.49hr and also the elusive accretion disc
precession period [P.sub.prec] = 2.22 days.
(Mercury's
precession about the sun was one of the first successful tests of general relativity.)
Precession provides a measure of the total mass in a system.
Following a week packed with traditional music, dance and dress, the finale on Saturday saw a colourful
precession of performers snaking through the streets from Billingham Community Centre to the arena in the town centre.
THERE are many who believe that the long religious tradition involving the celebration of Christmas has been hi-jacked by the business community, as evidenced by an annual
precession of the starting date for Christmas shopping, etc.
A three-page glossary clarifies such astrophysical terms as
precession, corona, and nebula.
Another possible cause of a circle on a nickel pitch would be a rotation of the dot, in a phenomenon called
precession. This is a "wobble" or gyration of the spin axis about a secondary axis.
To reach this goal, the adiabatic condition has to be fullfilled: changes [dot.B] of the magnetic field (especially rotations of the field vector) seen by the moving neutron normalized to the absolute value of the magnetic flux density B have to be much slower than the neutron Larmor
precession in the magnetic field [[omega].sub.L]
