elliptical system

elliptical system

[ə′lip·tə·kəl ′sis·təm]
(engineering)
A tracking or navigation system where ellipsoids of position are determined from time or phase summation relative to two or more fixed stations which are the focuses for the ellipsoids.
References in periodicals archive ?
Interacting galaxies NCC 4782 and NCC 4783 comprise a very unusual giant elliptical system located about 6[degrees] west of Spica, near the Corvus-Virgo border.
One of these is the elliptical system of needlebeams.