The present invention provides a method for a multi-path detection
analysis and selectivity of CDMA signals using spread spectrum receivers
using a correlation technique. The invention is based on determining by
the spread spectrum receiver whether a distortion of a received radio
frequency signal, caused by a multi-path component of said received
signal, meets a predetermined condition using a pre-selected correlation
analysis of said received signal. This invention is generally applicable
to global navigation satellite system (GNSS) receivers and it is
particularly useful in GNSS receivers, such as GPS (global positioning
system) and Galileo receivers. The important goal of this invention is to
provide a simple method for identifying signals that are corrupted by
multi-path effects, and can be excluded from position calculation in the
GNSS receivers.