A circular passive synthetic array: an inverse problem approach

• Published in: IEEE journal of oceanic engineering Vol. 17; no. 1; pp. 40 - 47
• Main Author: Yen, N.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.01.1992; Institute of Electrical and Electronics Engineers
• Subjects: acoustic arrays; Acoustic measurements; Acoustic noise; Acoustics; Array signal processing; Design engineering; Exact sciences and technology; Frequency; Fundamental areas of phenomenology (including applications); Guidelines; Interference; Inverse problems; Marine; Mathematical model; passive sonar; Physics; signal processing; Signal processing algorithms; sonar; Underwater sound; Signal processing; Localization; Sensor array; Synthetic aperture; Underwater acoustics; Inverse problem
• ISSN: 0364-9059
• DOI: 10.1109/48.126953

Based on the general concept of the inverse acoustic radiation problem, the temporal scanning of a stationary acoustic field along a closed contour is used to simplify the measurement approach for obtaining information on source directionality. The mathematical formulation is derived from a model of the two-dimensional acoustic field. The formulation of the inverse problem is also investigated to establish a methodology for improving the angular resolution of the array processing. The fundamental relationship between the sound sources and the circular passive synthetic array is explored, utilizing existing mathematical methods, in order to develop the processing algorithm. Other subjects of practical interest, such as directional ambiguity, effect of Doppler frequency, interference noise, and processing gain are discussed. It is concluded that the results can be used to establish guidelines for engineering design and deployment of this type of synthetic array, and to further exploit the new array signal processing technique.< >