Broadband Geo-Acoustic Inversion from Sparse Data Using Genetic Algorithms: Results from the 1997 Geo-Acoustic Inversion Workshop
Abstract
Matched field acoustic inversion techniques were investigated using data from sparsely populated, vertical receiving arrays and a single receiver element. The purpose of considering sparse data sets is to investigate, by simulation, the feasibility of reducing the number and complexity of acoustic measurements needed for geo-acoustic inversion. The entire bandwidth of the1997 G-Acoustic Inversion Workshop data (25-500 Hz) was used to compensates for the lack of spatial information when a limited number of receivers is considered. Forward model PROSIM and inversion code SAGA were applied to benchmark cases: sd , wa, and n. The inversion results generally showed good agreement with the ground truth, for full arrays, sparse arrays and single receiver elements. With a simple two layer model, an effective sound speed profile in the bottom was determined, which produced a good fit between model and observed pressure fields for the multi-layer case n.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1998
- Accession Number
- AD1113465
Entities
People
- M. Siderius
- P. Gerstoft
- P. Nielsen
Organizations
- SACLANT ASW Research Centre