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| 论文题目 |
Theory and signal processing of acoustic correlation techniques for current velocity measurement |
| 论文题目（英文） |
Theory and signal processing of acoustic correlation techniques for current velocity measurement |
| 作者 |
朱维庆 |
| 发表年度 |
2008 |
| 卷 |
27 |
| 期 |
1 |
| 页码 |
12-22 |
| 期刊名称 |
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| 摘要 |
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| 摘要_英文 |
A theoretical model and signal processing of acoustic correlatjon measurents to estlate current velocity adiscussed． The sona_r spactime correlaion function of vol-uⅡle reverberatiom witllin F}allnhofbr zone i8 derived．The fhIlction，whicb is inoIlen florn。is the theoretical nlodel of acoustic correlation measurements． The characteristics of
the correlation value8 around the mamlm of the amplitude of the correlation fUnction，where most infoation about cu”ent velocity is contained，are primarily analyzed．Localized Let
Mean squaures(LLMs)criterionis put forward for velocity estimation． Sequential Quadratic ProgramIlling(sQP)method is adoptedthe optirIlization method．so the systematic sig-
nal processing n：Lethod of acoustic correlation techllique8 f．or current velocityleasurement is established． A prototype aucotic correlation current profiler(AcCP)underwent several sea
trials，the resIllts show that theoretical rrlodelpr0mately coincides with experimental reults．Current profiles i11cluding the speed and direction from ACCP are compared with those
om acoustic Doppler current profller(ADcP)．Thec叮rent profiles by bothtrument8agree reonably well．Also，the standard deviation of velocityⅡleaLsurement by ACCP is statistic a_Uy cakulated and it is a httle larger than predicted value．
PACS Immbers：43．30．43．60 |
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