Coherent sequential PN code extractor

DETAILED DESCRIPTION It is a primary object of the present invention to provide a novel PN code clock extraction circuit for increasing the speed of acquisition of transmitted PN coded signals.
It is another primary object of the present invention to provide a novel PN code clock extraction circuit which permits an increase in the speed of search of transmitted PN coded signals by a factor of four.
It is another primary object of the present invention to provide a novel PN code clock extraction circuit for searching a transmitted PN code signal at the same speed as prior art signals in a jamming environment which is four times as intense.
It is another primary object of the present invention to provide a novel PN code clock extraction circuit which permits transmitted PN coded signals to have one-fourth the power as heretofore and still maintain the same acquisition speed.
It is a general object of the present invention to provide a novel PN code clock extraction circuit that can be added to existing receiving and detection circuits for new products or retrofitted into old products.