中文摘要：

为了进一步完善投放式声学多普勒海流剖面仪（LADCP）测量和资料后处理技术，通过海上观测实验和资料分析，优化了盲区长度的设置，改善了第一观测层的资料质量；分析了下放过程和上升过程的不同测量误差，并反馈到对测量过程和资料后处理的质量控制，提出了较完备LADCP测量系统的必要组成。通过和相应的底跟踪结果及走航ADCP观测结果的比对分析，LADCP测量及资料后处理结果的可信性得到了初步验证。

英文摘要：

For improving the technology of measurement and the data post-processing of Lowered Acoustic Doppler Current Profiler （LADCP）, the blanking length is optimized and the data quality of the first bin is improved based on in-situ experiments and data analyses. The different observation errors during down casting and up casting of LADCP are analyzed, respectively, and feeded back to the quality control of observation and data processing. The necessary compositions of a more perfect LADCP observation system are also suggested. Based on the comparison between bottom-track LADCP results and the isochronous ship-board ADCP results, the creditability of the measurement and the data processing of LADCP is verified.