The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Direction of Arrival (DOA) estimation of gunshots is an important asset to law-enforcement agencies and defense forces, for shooter localization is key to improving public and troop safety. Solutions vary according to scenario, application, and available resources. As the distance between the firing position and the sensor array increases, as in a typical sniper scenario, signal to noise ratio decreases...
Compressive Sensing (CS) allows for reconstructing sparse signals within a low acceptable error using less measurements than stipulated by the Nyquist criterion. This CS paradigm rests on the assumption that there is a basis in which the signal is sparse, and one employs random measurements by means of projections on a sensing matrix reconstructing the signal from these measurements through l1-norm...
This paper proposes a deconvolution technique for gunshot signals aiming at improving direction of arrival estimation and weapon recognition. When dealing with field recorded signals, reflections degrade the performance of these tasks and a signal enhancement technique is required. Our scheme improves a gunshot signal by delaying and summing its reflections. Conventional blind deconvolution schemes...
Knowledge of the upper limits of errors in digital sampling is very important in high-accuracy measurements, for these errors are significant elements for establishing measurement quality. In this paper, we carefully go through the theoretical background necessary for an in-depth understanding of the main sources of errors in high-accuracy measurement of harmonic components. We assess the significance...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.