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Information theory provides a novel perspective on passive sonar performance analysis. This approach begins by partitioning the search space and then considers the problem of assigning a source to the correct partition based on pressure observations from a hydrophone array. Prior work described necessary conditions for achieving arbitrarily small probability of error (Pe) as a tradeoff between signal-to-noise...
Optical implementations of synthetic aperture imaging techniques provide a method of overcoming the platform constrained diffraction limit for optical imaging systems. We discuss progress in applying these methods to outdoor imaging demonstrations.
Item response theory was used to analyze version 3 of the continuous-time signals and systems concept inventory with a pool of 1276 students at 7 schools. The resulting estimates of question difficulty and student ability provide important data used to evaluate the design of the exam and prepare for the upcoming revision to version 4 of the inventory.
Detection and resolution are the two fundamental tasks to be performed by a sonar system deployed in a multi-target environment. A matched filter is the optimum detector for a known signal in white noise and an inverse filter achieves the optimal resolution when the received signal-to-noise ratio (SNR) is very high. The main-lobe width of the autocorrelation function (ACF) of the transmitted signal...
The signals and systems concept inventory (SSCI) is a 25 question multiple choice exam designed to assess studentspsila conceptual understanding in signals and systems (S&S), a common core course in electrical and computer engineering curricula. The SSCI provides both formative assessment to instructors looking to improve studentspsila conceptual understanding in their courses, and summative assessment...
Concept inventories play a growing role in assessing student understanding in engineering curricula. A common application of concept inventories is a pre/post- test assessment in a course. For this reason, it is important to confirm the validity of any new concept inventory, i.e., to verify that the inventory measures what it is designed to assess. The signals and systems concept inventory (SSCI)...
Passive sonar algorithms attempt to estimate the location of a sound source from pressure observations at a hydrophone array and knowledge of the acoustic environment. Traditionally, the mean squared error (MSE) of these position estimates has been the performance metric of interest, and performance bounds set lower limits on the MSE. Information theory provides an alternative perspective on passive...
Information theory provides a novel perspective on passive sonar performance analysis. This approach begins by partitioning the search space and then considers the problem of assigning an unknown source to the correct partition based on pressure observations from a hydrophone array. Prior work described necessary conditions for achieving arbitrarily small probability of error (Pe) as a tradeoff between...
Passive sonar algorithms attempt to estimate the location of a sound source from pressure observations at a hydrophone array and knowledge of the acoustic environment. Traditionally, the mean squared error (MSE) of these position estimates has been the performance metric of interest, and performance bounds set lower limits on the MSE. Information theory provides an alternative perspective on passive...
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