Interference mitigation, target detection, location and measurement using separable waveforms transmitted from spatially separated antennas

Abstract

A system includes a set of spatially separated transmit antenna elements (SSTAE) broadcasting uniquely identifiable waveforms, a set of spatially separated receive antenna elements (SSRAE) and at least one circuit assembly. The at least one circuit assembly is electrically coupled to the SSRAE, which provide respective electrical signals responsive to the uniquely identifiable waveforms. The electrical signals include at least one target signal and electromagnetic interference. The circuit assembly operates on the electrical signals to create a matched projection space parallel to a reference related to the at least one target signal and a second projection space that is orthogonal or nearly orthogonal to the matched projection space. The second projection space includes the electromagnetic interference but not the at least one target signal. The circuit assembly uses the second projection space and the matched projection space to separate the electromagnetic interference from the at least one target signal.