US 2019/0196023 A1 · SYSTEM AND METHOD FOR COMBINING SIGNALS FOR IMPROVED PERFORMANCE IN CHALLENGING ENVIRONMENT

Abstract

Apparatuses and methods of manufacturing same, systems, and methods are described for combining received and correlated Global Navigation Satellite System (GNSS) signals and using the combined signal for improving GNSS reception in, inter alia, challenging environments. In one aspect, a first correlated GNSS signal and a second correlated GNSS signal are stored and then combined, and the combined signal is used to adjust reception of the first GNSS signal and/or the second GNSS signal. If the first and second correlated GNSS signals are stored by unequal time periods, time periods of one or both are added together until the total added first correlated GNSS signal is the same length of time as the total added second correlated GNSS signal. In order to properly combine the GNSS signals, gain/balancing factor(s) may be applied, the polarity of one or both may be flipped, etc.

Claims20

Dependent claims

A method, comprising:

determining first correlations for a first type of satellite signal over a first period;
determining second correlations for a second type of satellite signal over a second period;
summing the second correlations from one or more second periods until the first period is substantially the same as the second period;
modifying one or more of the first correlations and the summed second correlations in order to combine them;
generating a combined satellite signal by combining the modified first correlations and the modified summed second correlations;
and
using the combined satellite signal to adjust reception of at least one of the first type of satellite signal and the second type of satellite signal.

4 more elements

An apparatus, comprising:

one or more non-transitory computer-readable media;
and
at least one processor which, when executing instructions stored on the one or more non-transitory computer readable media, performs the steps of:
determining first correlations for a first type of satellite signal over a first period;
determining second correlations for a second type of satellite signal over a second period;
summing the second correlations from one or more second periods until the first period is substantially the same as the second period;
modifying one or more of the first correlations and the summed second correlations in order to combine them;
generating a combined satellite signal by combining the modified first correlations and the modified summed second correlations;
and
using the combined satellite signal to adjust reception of at least one of the first type of satellite signal and the second type of satellite signal.

7 more elements

Dependencies are inferred from the claim text.

System and method for combining signals for improved performance in challenging environment

Life of this patent

System and method for combining signals for improved performance in challenging environment

Life of this patent

Abstract

Claims20