Page 88 - 《应用声学》2022年第5期

764 2022 年 9 月

高后的效果，目标信息更新时间由一个发射周期缩 ference on Information Fusion (FUSION), Xi’an, China,
短为单个子信号的时长。本文提出的正交多相码连 2017.
[14] Jauffret C, Pérez A C, BlancBenon P, et al. Doppler-
续波和相应的回波检测算法，在保证了目标信息更
only target motion analysis in a high duty cycle sonar
新速率前提下，在提升CAS多普勒分辨性能和均匀 system[C]// Heidelburg, Germany, 2016.
混响背景下的单目标检测能力方面，具有明显效果。 [15] Hines P C, Murphy S M, Hicks K T. Comparison of signal
coherence for continuous active and pulsed active sonar
需要注意的是，本论文只分析了单目标情况。
measurements in littoral waters[J]. The Journal of the
当存在多目标或者非均匀混响时，临近强干扰、强 Acoustical Society of America, 2014, 136(4): 2226.
散射区域 (如非均匀、起伏的海底) 所形成的相干函 [16] Hines P C, Hicks K T, Murphy S M, et al. Measurements
数旁瓣 (主要指自相关函数旁瓣和互相关函数) 会 of signal coherence for high and low duty cycle sonars in
a shallow water channel[C]// 2015 Oceans, Genoa, Italy,
对弱目标的检测产生干扰，影响 CAS 的性能。未来 2015.
将对多目标、非均匀混响环境中 CAS的检测性能进 [17] Murphy S M, Hines P C. Sub-band processing of con-
一步开展研究。 tinuous active sonar signals in shallow water[C]// 2015
Oceans, Genoa, Italy, 2015.
[18] Murphy S M, Scrutton J G E, Hines P C. Experimen-
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