ON THE PERFORMANCE OF THE OVERLAP-CORRELATOR SYNTHETIC-APERTURE TECHNIQUE

被引：4

作者：

EDELSON, GS ^{[1
]}

SULLIVAN, EJ ^{[1
]}

机构：

[1] USN,CTR UNDERWATER SYST,NEWPORT,RI 02841

来源：

JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA | 1991年 / 90卷 / 04期

关键词：

D O I：

10.1121/1.401627

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

The overlap-correlator technique of passive synthetic-aperture array processing [S. Stergiopoulos and E. J. Sullivan, J. Acoust. Soc. Am. 86, 158-171 (1989)] is investigated. This method of providing an effective aperture greater than that of the physical array utilizes phase correction factors that are calculated by correlating overlapping space samples of the acoustic signal from successive measurements of the moving towed array. Given the criterion of minimizing the effect of the signal-to-noise ratio (SNR) on the phase correction factor error while achieving a fixed effective aperture length, the optimal overlap in number of hydrophones between these two successive measurements is derived. The conditions under which the calculated phase correction factor is equivalent to that of the desired phase correction factor are also studied.

引用

页码：2000 / 2003

页数：4

共 5 条

[1]

CAREY WM, 1989, J ACOUST SOC AM, V86, P754

[2]

EDELSON GS, 1990, J ACOUST SOC S1, V88, pS30

[3] EXTENDED TOWED ARRAY-PROCESSING BY AN OVERLAP CORRELATOR [J].