Matched Field Processing for Active and Passive Sonar
نویسنده
چکیده
The complexity and dynamics of shallow water limit the performance of adaptive array processors. Matched field processors are especially sensitive since they require accurate environmental models to construct signal replica vectors. The long term goals are i) to determine processors performance limits and ii) to develop robust algorithms for adaptive array processing in shallow water for both active and passive sonar systems.
منابع مشابه
12: Ocean Ambient Noise Studies for Improved Sonar Processing
Inherent in passive sonar are several challenges that any effective system implementation must address. One of these challenges is how to best treat multipath arrivals. In some cases these can be a hindrance while in this research they are exploited. In certain environments, different arrivals (multipath and direct) retain significant coherence with respect to each other. This fact has been not...
متن کاملThreshold Region Performance Prediction for Adaptive Matched Field Processing Localization
The full-field modeling of matched field processing (MFP) provides potentially large gains over traditional beamformers in passive sonar signal processing. MFP localization gains are manifested by superior estimation of source range and novel estimation of source depth. However, MFP localization is limited in practice by high spatial ambiguities in the MFP output. These ambiguities can result i...
متن کاملMoving Target Depth Estimation for Passive Sonar, Using Sequential Resampling Techniques
We examine the problem of passive localization of a moving target in a littoral environment, based on its depth and range-rate. We compare performance with the conventional matched field processor, which localizes in depth and range. Range-rate localization is more robust with respect to uncertainties in the environment, and with respect to associated uncertainties in the horizontal wave number...
متن کاملSimulation of Passive and Multistatic Active Sonar Contacts
Fields of distributed passive and multistatic active sonar sensors provide a surveillance capability against quiet submarine threats in ASW scenarios. A significant challenge of heterogeneous, multi-sensor systems is the successful fusion of information from the various sensors to enable robust target detection, classification, localization, and tracking. Sensor fusion and tracking algorithms m...
متن کاملImplementation of Adaptive and Synthetic-Aperture Processing Schemes in Integrated Active–Passive Sonar Systems
Progress in the implementation of state-of-the-art signalprocessing schemes in sonar systems is limited mainly by the moderate advancements made in sonar computing architectures and the lack of operational evaluation of the advanced processing schemes. Until recently, matrix-based processing techniques, such as adaptive and synthetic-aperture processing, could not be efficiently implemented in ...
متن کامل