摘要
目的 研究被动声定位和跟踪的可行性 .方法 设计被动声目标定位、跟踪的实验系统 ,并进行静目标定位实验与运动目标定位与跟踪实验 .结果 实验系统对静目标测向精度较高 ,而测距精度很低 ;对恒速运动目标 ,采用测向信息和多普勒频移信息相融合的算法得到了目标运动速度、距离的精确估计 .
Aim To evaluate the availability of passive acoustic localization and tracking. Methods An experimental system for passive acoustic target localization and tracking was developed. Based on this system, experiments both for static objects localization and for moving objects localization and tracking were made. Results The precision of direction estimation is high but the precision of range estimation is poor for the static object; as to the moving object with constant speed, parameters such as range and speed can be precisely estimated by fusing the direction and Doppler shift frequency information. Conclusion Passive acoustic tracking can be available to constant speed target, based on time delay estimation for direction finding and frequency estimation for Doppler shift information.
出处
《北京理工大学学报》
EI
CAS
CSCD
1999年第6期764-768,共5页
Transactions of Beijing Institute of Technology
