一种大规模水下声传感器网络定位技术

The network location technology of large scale underwater acoustic sensor

针对水下声传感器网络参考节点布设成本高、难度大所带来的问题,研究了一种基于迭代的大规模水下传感器网络定位方法,通过少量初始锚节点定位普通节点,评估定位成功节点的精度保持情况,升级定位精度高的普通节点为锚节点参与定位余下的普通节点。研究结果表明:以一定的精度损失为代价,迭代定位方法显著提高了定位覆盖率,而联合三维欧几里得距离估计的迭代方法可进一步提升定位覆盖率。

Aiming at the problem of high cost and difficulty in the placement of the underwater acoustic sensor network（UWSN） reference nodes,this paperstudieda localization method based on recursive scheme for large scale underwater sensor network.Recursive scheme isa method that some common nodes are located by a small amount of initial reference node, then nodes that were successfully positioned will evaluatethe accuracy of the location results, the nodes with high positioning accuracy will be upgraded to reference nodes to participate in the positioning of the remaining common nodes.Results show thatwith a certain precision loss as the cost, the recursive positioning scheme significantly improves the positioning coverage, and combined with three dimensional Euclidean（3 D Euclidean） distance estimation the recursive positioning scheme can further enhance the localization coverage.