Browsing by Author "Wagstaff, Ronald A."
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A real time system for towed array calibration and performance analysis, or how to get 50 dB sidelobes from a towed array
Berrou, Jean-Louis; Bluy, Orest Z.; Wagstaff, Ronald A. (NATO. SACLANTCEN, 1982/06)Sidelobe suppression levels of 30 dB for a towed array are generally considered excellent; values above that are considered exceptional or unachievable. However, 40 t o 50 dB suppression levels have been achieved and ... -
Is power averaging the best estimator for undersea acoustic data?
Wagstaff, Ronald A.; Berrou, Jean-Louis (NATO. SACLANTCEN, 1982/06)The power average is the statistic which is commonly used in all types of acoustic data processing. It is an excellent estimator for "well behaved" Gaussian distributions when the central or average value is desired. ... -
Low-frequency ambient noise in the deep sound channel: the missing component
Wagstaff, Ronald A. (NATO. SACLANTCEN, 1981/07)There is an important component of the undersea ambient noise which has generally been overlooked or ignored. It is the noise which arrives at a sensor, located in a deep sound channel, by way of ducted sound propagation. ... -
Underwater ambient noise: proceedings of a conference held at SACLANTCEN on 11-14 May 1982 - vol. 2: unclassified papers, part 1
Underwater ambient noise conference (1982 May 11-14 : La Spezia, Italy) (NATO. SACLANTCEN, 1982/06) -
Underwater ambient noise: proceedings of a conference held at SACLANTCEN on 11-14 May 1982, vol. 2 - Unclassified Papers, part 2
Underwater ambient noise conference (1982 May 11-14 : La Spezia, Italy) (NATO. SACLANTCEN, 1982/06)Contents: PROCESSING TECHNIQUES--A method of estimating the influence of ship's noise on ambient noise measurements; Optimal detection and tracking of acoustical noise sources in a time-varying environment; Influence of ... -
Use of the towship for assessing towed-array performance and analyzing data quality
Wagstaff, Ronald A.; Berrou, Jean-Louis; Cotaras, Frederick D. (NATO. SACLANTCEN, 1982/11)A series of relatively simple tests are presented and discussed, which used in conjunction with the noise received from the towship, can be used in real time to assess the performance of a towed array and the quality of ... -
Virtual beams from an FFT beamformer and their use to assess the quality of a towed-array system
Berrou, Jean-Louis; Wagstaff, Ronald A. (NATO. SACLANTCEN, 1983/01)Linear towed arrays with sophisticated signal processing systems have become popular for passive sonar and seismic prospecting. This is due to the ease of mobility and the large spatial gains achievable. However, because ...