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We have devised a system to automatically detect, manage and track contacts with a stationary line array. The array has a large number of elements, and the ability to process any subset of these elements (up to a fixed number) at any given time. Detection is accomplished by fixed detection apertures spaced along the array such that the apertures create a "tripwire" range parallel to the...
Inaccurate dipole spacing modeling causes Sawtooth bias in digital split-beam trackers. This paper presents a unified treatment of the generalized dipole spacing model for a complex array and discusses the parametric dependence in detail. The study conducted revealed that in addition to conventional array/beamformer parameters, the dipole spacing depended on "quadrature" angular offset from...
Recent at-sea testing of a passive sonar bearing tracker indicated that received signal propagation paths which include a surface reflection can result in a substantial increase in bearing error variance. Measurements at high signal-to-noise ratio showed excessive bearing error variance compared to both theory and other measurements when measured Depression/Elevation angle indicated a surface reflected...
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