摘要
针对常规被动声纳的非对称阵布阵方式,对常规的互谱法被动测距进行改进研究,推导出适合远近程测距的测距公式,解决了近程测距模糊问题,进而实现了互谱法改进研究算法的DSP硬件处理。并研究了后置滤波技术,采用基于自适应抵消的参数估计器取代传统的Kalman滤波器。实现了被动声纳的150m和15km之间的全程测距(传统被动声呐仅能对3km～4km以外的目标测距)和对快速目标的跟踪。在近程测距中,实现了潜艇尾部测距缩小盲区。原测距系统在30°～150°范围测距。改造后的互谱测距在3km时,能对20°～160°范围测距,在300m时,能对10°～170°范围测距。测距相对误差小于5%。在近程提高了潜艇的机动性。
Improvement of passive ranging based on cross spectra leads to an optimized ranging formula applicable to both far and near targets. The proposed cross-spectra optimization method is implemented with DSP. The system can be used for whole ranging and tracking fast-moving targets. In near target ranging, the blind zone of submarine tail ranging is significantly reduced. The pro-ranging system can range from 30° to 150°. After optimization, the system is capable of ranging from 20° to 160° for targets at 3km and from 10° to 170° for targets at 300m, with errors less than 5%. The technique is very useful in improving mobility of submarines.
出处
《声学技术》
EI
CSCD
北大核心
2005年第2期76-79,83,共5页
Technical Acoustics
