8CHEN Mingyuan. Comparison and reference of domestic and for- eign salvage [J]. World Shipping, 2010 ( 12 ) :43 45 ( in Chi- nes ).
9A. LEWANDOWSK I, B. N I EHOEFER, C. W l ETFELD: Performance Evaluation of Satellite-based Search and Rescue Services: Galileo vs. Cospas-Sarsat[O].lEEE Vehicular Technology Conference, Calgary, September 2008,68.