M. M. Nesterov, V. N. Trifanov
Saint-Petersburg Institute of Informatics and
Automation RAS
Signal reception by three omnidirectional
equidistant receivers in-line to each other arranged as a single three-pole
system (tripole) is investigated. The Schrödinger equation is transformed
to a first-order difference equation with argument lag, and the Poisson
wave equation — to the second-order difference equation. These difference
equations in the phase interpretation (equiphase time and synchronous base)
allow direction-of-arrival estimation by geometrical techniques using the
tripole without recourse to the notion of signal propagation velocity.
To a first approximation, the first-order phase solutions yield the target
angle, and the second order phase solutions — the target distance. The
proposed methods allow high-frequency target scanning (24 frames per second
with an angle of view of 36×36 degrees).