A GPS receiver for integrating a GPS signal separately in a series of "A" type
and "B" type time segments, the "A" segments alternating with the "B" time segments;
combining the squares of the magnitudes of "A" time segment integrations corresponding
to code phases for forming "A" type combined magnitudes; combining the squares
of the magnitudes of the "B" time segment integrations corresponding to code phases
for forming "B" type combined magnitudes; and determining an acquisition code phase
of the signal from the strongest of the "A" or "B" combined magnitudes. The "A"
time segments and the "B" time segments are one-half the period of the data bits
of the signal, thereby ensuring that either the "A" time segments or the "B" time
segments avoid the nullifying effect of data bit inversions.
