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| 一种低空声源分布式定位系统及其算法与实验研究 | |
| 引用本文： | 常跃跃,陈建峰. 一种低空声源分布式定位系统及其算法与实验研究[J]. 航空工程进展, 2017, 8(4): 444-449. DOI: 10.16615/j.cnki.1674-8190.2017.04.012 |
| 作者姓名： | 常跃跃 陈建峰 |
| 作者单位： | 1. 西北工业大学 航空学院,西安,710072;2. 西北工业大学 航海学院,西安,710072 |
| 摘 要： | 低空声源目标具有较强的隐身性,为了实现对此类目标的定位,构建基于TMS320C6713平台的分布式麦克风阵列低空声源定位系统.麦克风阵列节点以DSP为核心处理器,通过A/D芯片采样麦克风阵列接收到的信号,通过到达时间差(TDOA)计算声源的角度,利用测向交叉法,融合多个节点的角度信息,计算出声源的位置.结果表明:在时延估计精确的情况下,对低空目标具有较好地估计;系统具有较高的精度和稳定性,能够满足对低空声源目标进行定位的实际需求. |
| 关 键 词： | 低空 分布式 声源定位 DSP 测向交叉定位法 TDOA |
| 收稿时间： | 2017-03-13 |
| 修稿时间： | 2017-04-26 |
A distributed acoustic localization system for low altitude source and its algorithm and experimental research |
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| CHANG Yue-yue and Chen Jianfeng. A distributed acoustic localization system for low altitude source and its algorithm and experimental research[J]. Advances in Aeronautical Science and Engineering, 2017, 8(4): 444-449. DOI: 10.16615/j.cnki.1674-8190.2017.04.012 | |
| Authors: | CHANG Yue-yue and Chen Jianfeng |
| Affiliation: | School of Aeronautics Northwestern Polytechnical University,School of Marine Science and Technology |
| Abstract: | Distributed sound localization system for low altitude targets based on the platform of TMS320C6713 is constructed. In the system, DSP is the core processor and signals received by the microphone are sampled via AD chips. The direction of the sound source is calculated through TDOA and the angles of each node are fused by direction finding cross localization method to calculate the position of the sound source. The simulation and experimental results show that the system has high precision and stability and can meet the needs of the practical applications for low altitude targets. |
| Keywords: | low altitude distributed DSP direction finding cross locating method TDOA experimental study |
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