摘要
针对航空吊放声呐系统提出了一种多通道信号检测的新方法，讨论了在连续波（ Ｃ Ｗ）信号和调频（ Ｆ Ｍ）信号两种工作方式下这种方法的性能，并与现有的方法作了比较，分析和仿真实验结果表明，这种方法对弱信号检测有２～３ ｄ Ｂ的性能改善，而且提高了目标的测速精度。
Aiming at airborne dipping sonar systems, we present a multi channel data fusion method to improve the detection performance. Both Continuous Wave (CW) and Frequency Modulation (FM) mode are considered. After beamforming, FFT spectrum analysis/matched filtering, huge data are produced for the sonar display. To realize a match between the data and the limited number of pixels on the display, the sonar operator can obtain best detection performance. The data fusion process does this. Theoretical analysis, computer simulation, and a comparison to existing method are given. It is shown that 2～3 dB improvement can be achieved while the accuracy of target speed estimation is also improved.
出处
《西北工业大学学报》
EI
CAS
CSCD
北大核心
1999年第3期387-392,共6页
Journal of Northwestern Polytechnical University
基金
航空科学基金
教委博士点基金
