English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Yunfei Chen 1,2,*, Sheng Li 1, Bing Jia 2, Guijuan Li 2 and Zhenshan Wang 2 1 School of Naval Architecture, Dalian University of Technology, Dalian 116024, China; shengli@dlut.edu.cn 2 Science and Technology on Underwater Test and Control Laboratory, Dalian 116013, China; jbrobin@sina.com (B.J.); 18641193261@163.com (G.L.); wangzhenshanmobile@163.com (Z.W.) * Correspondence: yunfeidlut@163.com; Tel.: +86-0411-8267-7308 (ext. 803)

Feature of Echo Envelope Fluctuation and Its Application in the Discrimination of Underwater Real Echo and Synthetic Echo