An Approach to Direction Finding Involving the Phase Coding of the Received Signal Utilizing Complementary Sequences

摘要

A system is proposed which encodes the outputs of several simple omnidirectional antennas and processes this modified signal to provide angle-of-arrival data. The processor not only provides the angle-of-arrival data but the received signal is preserved as a simultaneous output with the bearing data. The coding is accomplished using complementary sequences and a derivative of these sequences called orthogonal complementary sequences. The technique is described in detail and a digital computer model was developed to support the theory. (Author)