近场条件下脉冲基线定位性能影响因素分析  

Influencing Factors of Pulse Baseline Positioning Performance in Near Field

作　　者：董利英[1] 陈志菲[1] 

机构地区：[1]西北工业大学自动化学院,陕西西安710072

出　　处：《鱼雷技术》2014年第2期100-104,共5页Torpedo Technology

基　　金：中国博士后科学基金资助(2012M512027)

摘　　要：针对近场条件下的脉冲基线定位,推导了以脉冲前沿到达时刻为变量的测距和测向公式,讨论了CW脉冲信号参数、阵列参数和声源入射位置对其定位性能的影响。仿真结果表明,较低的脉冲辐射频率,较大的阵列孔径,以及声源从阵列正对方向入射时,脉冲基线定位具有更好的定位性能,阵元数对其定位性能影响不大,随着声源与阵列距离的增大,定向性能大致保持不变,而测距性能则不断下降。The equations of ranging and direction finding at the arrival time of leading pulse are deduced for pulse base- line positioning. The influences of the parameters of CW pulse, array, and sound source incident position on the per- formance of pulse baseline positioning are discussed. Simulation results show that the pulse baseline positioning can achieve better performance in the case of lower radiation frequency, larger array aperture, and the very source inci- dence against the array direction. Array number has little influence on the positioning performance, and with an increase in the range between sound source and array, the directional performance keeps stable, but the ranging performance decreases continuously.

关 键 词：脉冲基线定位 近场 定位性能 

分 类 号：TJ630.6[兵器科学与技术—武器系统与运用工程]