Systems and methods for terrain contour matching navigation are provided.
In one embodiment, a method for terrain contour matching navigation
comprises: receiving at least one sample point representing the position
of an aircraft, the at least one sample point including a horizontal
position and an altitude sample; correlating a first sample point of the
at least one sample point across a reference basket array having a
plurality of elements; determining a correlation quality; when the
correlation quality does not achieve a pre-determined quality threshold,
performing at least one additional correlation of an additional sample
point of the at least one sample point across the reference basket array;
and when the correlation quality does achieve a pre-determined quality
threshold, calculating a position error based on the correlating of the
first sample point and any additional correlations of any additional
sample points.